2009 Mercedes-benz M Class Owners Manual

press hand-held remote control button 6
and the desired signal transmitter button (2, 3 or 4). Do not release the buttons until step 5 is completed. Indicator lamp 1 will flash, first slowly and then rapidly.

i Indicator lamp 1 flashes immediately

the first time the signal transmitter button is programmed. If this button has already been programmed, the indicator lamp will start flashing after 20 seconds.

X Step 5: After indicator lamp 1 changes

from a slow to a rapidly flashing light, release the hand-held remote control button and the signal transmitter button.

X Step 6: Press and hold the just-trained

signal transmitter button (2, 3 or 4) and observe indicator lamp 1. If indicator lamp 1 stays on constantly, programming is complete and your device should activate when the respective signal transmitter button (2, 3 or 4) is pressed and released.

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i If indicator lamp 1 flashes rapidly for

approximately 2 seconds and then turns to a constant light, continue with programming steps 8 through 12 as your garage door opener may be equipped with the “rolling code” feature.

X Step 7: To program the remaining two

signal transmitter buttons, repeat the steps above starting with step 3.

Rolling code programming To train a garage door opener (or other rolling code devices) with the rolling code feature, follow these instructions after completing the “Programming” portion (steps 1 through 6) of this text. (A second person may make the following training procedures quicker and easier.) X Step 8: Locate the “training” button on the

garage door opener motor head unit.

i Exact location and color of the button may

vary by garage door opener brand. Depending on manufacturer, the “training” button may also be referred to as “learn”or “smart” button. If there is difficulty locating the transmitting button, refer to the garage door opener Operator’s Manual.

X Step 9: Press the “training” button on the

garage door opener motor head unit. The “training light” is activated. You have 30 seconds to initiate the following two steps.

X Step 10: Return to the vehicle and firmly press, hold for 2 seconds and release the programmed signal transmitter button (2, 3 or 4).

X Step 11: Press, hold for 2 seconds and release same signal transmitter button a second time to complete the training process.

i Some garage door openers (or other

rolling code equipped devices) may require you to press, hold for 2 seconds and release the same signal transmitter button a third time to complete the training process.

X Step 12: Confirm the garage door

operation by pressing the programmed signal transmitter button (2, 3 or 4). X Step 13: To program the remaining two

signal transmitter buttons, repeat the steps above starting with step 3.

Gate operator/Canadian programming Canadian radio-frequency laws require transmitter signals to “time-out” (or quit) after several seconds of transmission which may not be long enough for the integrated signal transmitter to pick up the signal during programming. Similar to this Canadian law, some U.S. gate operators are designed to “time-out” in the same manner. If you live in Canada or if you are having difficulties programming a gate operator (regardless of where you live) by using the programming procedures, replace step 4 with the following: X Step 4: Press and hold the signal

transmitter button (2, 3 or 4). Do not release this button until it has been successfully trained.

X While still holding down the signal

transmitter button (2, 3 or 4), “cycle” your hand-held remote control button 6
as follows: Press and hold button 6 for 2 seconds, then release it for 2 seconds, and again press and hold it for 2 seconds. Repeat this sequence on the hand-held

remote control until the frequency signal has been learned. Upon successful training, indicator lamp 1 will flash slowly and then rapidly after several seconds.

X Proceed with programming step 5 and

step 6 to complete.

i Upon completion of programming the

integrated remote control, make sure you retain the hand-held remote control that came with the garage door opener, gate operator or other device. You may need it for use in other vehicles, for future programming of an integrated remote control, or simply for continued use as a hand-held remote control to operate the respective device in other situations.

Reprogramming a single signal transmitter button To program a device using a signal transmitter button previously trained, follow these steps:

Controls in detail

Useful features

X Switch on the ignition. X Press and hold the desired signal

transmitter button (2, 3 or 4). Do not release the button. Indicator lamp 1 will begin to flash after 20 seconds.

X Without releasing the signal transmitter

button, proceed with programming starting with step 3.

Operation of integrated remote control X Switch on the ignition. X Select and press the appropriate

integrated signal transmitter button (2, 3 or 4) to activate the remote controlled device. The integrated remote control transmitter continues to send the signal as long as the button is pressed – up to 20 seconds.

Erasing the integrated remote control memory i If you sell your vehicle, erase the codes of

all three channels.

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Controls in detail

Useful features X Switch on the ignition. X Simultaneously press and hold outer signal

transmitter buttons 2 and 4, for approximately 20 seconds, until indicator lamp 1 flashes rapidly. Do not hold for longer than 30 seconds. The codes of all three channels are erased.

Programming tips If you are having difficulty programming the integrated remote control, here are some helpful tips: RCheck the frequency of hand-held remote control 5 (typically located on the reverse side of the remote). The integrated remote control is compatible with radio-frequency devices operating between 280-390 MHz.

RPut a new battery in hand-held remote

control 5. This will increase the likelihood of the hand-held remote control sending a faster and more accurate signal to the integrated remote control.

RWhile performing step 3, hold hand-held

remote control 5 at different lengths and angles from the signal transmitter button (2, 3 or 4) you are programming. Attempt varying angles at the distance of 2

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to 12 inches (5 to 30 cm) away or the same angle at varying distances.

RIf another hand-held remote control is available for the same device, try the programming steps again using that other hand-held remote control. Make sure new batteries are in the hand-held remote control before beginning the procedure.

RStraighten the antenna wire from the

garage door opener assembly. This may help improve transmitting and/or receiving signals.

i Certain types of garage door openers are

incompatible with the integrated remote control. If you should experience further difficulties with programming the integrated remote control, contact an authorized Mercedes-Benz Center, or call the Mercedes-Benz Customer Assistance Center (in the USA) at 1-800-FOR-MERCedes, or Customer Service (in Canada) at 1-800-387-0100.

i USA only:

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful

2.

interference, and this device must accept any interference received, including interference that may cause undesired operation.

Any unauthorized modification to this device could void the user’s authority to operate the equipment.

i Canada only:

This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: 1. This device may not cause interference,

and this device must accept any interference received, including interference that may cause undesired operation of the device.

2.

Any unauthorized modification to this device could void the user’s authority to operate the equipment.

Compass X Calling up the compass: Press button

è or ÿ on the multifunction steering wheel repeatedly until the AIRMATIC/ Compass menu appears in the multifunction display. The compass displays the direction into which the vehicle is currently traveling: N, NE, E, SE, S, SW, W, or NW.

i If your vehicle is not equipped with the air

suspension program, the multifunction display will show the compass only.

Floormats G Warning! Whenever you are using floormats, make sure there is enough clearance and that the floormats are securely fastened. Floormats should always be securely fastened using the fastening equipment. Before driving off, check that the floormats are securely in place and adjust them if necessary. A loose floormat could slip and hinder proper functioning of the pedals. Do not place several floormats on top of each other as this may impair pedal movement.

i To install or remove the floormat more

easily, move the driver’s seat or front passenger seat as far to the rear as possible.

Controls in detail

Useful features

1 Retainer pin 2 Eyelet X Removing: Pull floormat off of retainer pins

1.

X Installing: Press floormat eyelets 2 onto

retainer pins 1.

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234

Operation

Vehicle equipment ............................ 236
The first 1000 miles (1500 km) ....... 236
At the gas station ............................. 237
Engine compartment ........................ 239
Tires and wheels ............................... 245
Winter driving ................................... 269
Driving instructions .......................... 271
Maintenance ...................................... 288
Vehicle care ....................................... 290

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Operation

The first 1000 miles (1500 km) Vehicle equipment

i This Operator’s Manual describes all

features, standard or optional, potentially available for your vehicle at the time of purchase. Please be aware that your vehicle might not be equipped with all features described in this manual.

The first 1000 miles (1500 km)

The more cautiously you treat your vehicle during the break-in period, the more satisfied you will be with its performance later on. RDrive your vehicle during the first

1 000 miles (1 500 km) at varying but moderate vehicle and engine speeds.

RDuring this period, avoid heavy loads (full

throttle driving) and excessive engine speeds (no more than 2/3 of maximum rpm in each gear).

RAvoid accelerating by kickdown. RDo not attempt to slow the vehicle down by

shifting to a lower gear using the gear selector lever.

RSelect gear ranges 3, 2 or 1 (Y page 133) only when driving at moderate speeds (for hill driving).

After 1 000 miles (1 500 km) you may gradually increase vehicle and engine speeds to the permissible maximum.

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! Additional instructions for ML 63 AMG: RDuring the first 1 000 miles (1 500 km),

do not exceed a speed of 85 mph (140 km/h).

RDuring this period, avoid engine speeds

above 4 500 rpm in each gear. RShift gears in a timely manner. RSelect C as the preferred shift program

for the first 1 000 miles (1 500 km).

All of the above instructions, as may apply to your vehicle type, also apply when driving the first 1 000 miles (1 500 km) after the engine, the transfer case, the front differential or the rear differential has been replaced. i Always obey applicable speed limits.

Operation

At the gas station

At the gas station Refueling G Warning! Gasoline and diesel fuels are highly flammable and poisonous. They burn violently and can cause serious injury. Never allow sparks, flames or smoking materials near gasoline or diesel fuel! Turn off the engine before refueling. Whenever you are around gasoline or diesel fuel, avoid inhaling fumes and any skin or clothing contact. Extinguish all smoking materials. Direct skin contact with fuels and the inhalation of fuel vapors are damaging your health. G Warning! Overfilling of the fuel tank may create pressure in the system which could cause a gas discharge. This could cause the gas to spray back out when removing the fuel pump nozzle, which could cause personal injury.

G Warning! Do not fill diesel tanks with gasoline. Do not mix diesel fuel with gasoline. Otherwise the fuel system and engine could be damaged. In addition, the vehicle could catch fire.

! Never use diesel fuel in vehicles with

gasoline engine. Never refuel vehicles with gasoline engine with diesel fuel. Even small amounts of incorrect fuel will damage the fuel system and engine. Damage resulting from the use of non-approved fuels or fuel additives or resulting from mixing gasoline with diesel fuel or vice versa is not covered by the Mercedes-Benz Limited Warranty.

! If you have accidentally filled the tank

with incorrect or non-approved fuel, do not switch on the ignition. Otherwise the incorrect or non-approved fuel will get into the fuel lines. The fuel system must be drained completely. Contact an authorized Mercedes-Benz Center to have the fuel system drained completely.

! Gasoline engine:

To prevent damage to the catalytic converters, only use premium unleaded gasoline in this vehicle.

Any noticeable irregularities in engine operation should be repaired promptly. Otherwise, excessive unburned fuel may reach the catalytic converter, causing it to overheat and potentially start a fire.

! Diesel engine:

When filling the diesel fuel tank using fuel containers, place a filling filter, a suede cloth or a clean flannel cloth as a filter. Otherwise, particles from the fuel container could clog the fuel lines and/or the diesel injection system.

! Diesel engine:

The engine is more susceptible to wear and damage if you use Rmarine diesel fuel Rheating oil Radditives The exhaust aftertreatment device will be seriously damaged if you use any other diesel fuel than ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL (15 ppm SULFUR MAXIMUM). The use of such non-approved fuels and/or special additives is not covered by the Mercedes-Benz Limited Warranty.

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Operation

At the gas station i Gasoline engine:

Only use premium unleaded gasoline with a minimum Posted Octane Rating of 91
(average of 96 RON/86 MON). Information on gasoline quality can normally be found on the fuel pump. Please contact gas station personnel in case labels on the pump cannot be found. For more information on gasoline, see “Premium unleaded gasoline (gasoline engine)” (Y page 415), see “Fuel requirements” (Y page 415), or contact an authorized Mercedes-Benz Center, or visit www.mbusa.com (USA only).

i Diesel engine:

Only use commercially available vehicular ULTRA-LOW SULFUR DIESEL FUEL (15 ppm SULFUR MAXIMUM). Information on diesel quality can normally be found on the fuel pump. Please contact gas station personnel in case labels on the pump cannot be found. For more information on diesel fuels, see “Fuel requirements” (Y page 415), or contact an authorized Mercedes-Benz Center, or visit www.mbusa.com (USA only).

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i Diesel engine:

If you have driven the vehicle until the tank is empty, the fuel system needs to be bled (Y page 380).

The fuel filler flap is located on the right-hand side of the vehicle towards the rear. Locking/unlocking the vehicle with the SmartKey automatically locks/unlocks the fuel filler flap. i In case that the central locking system does not release the fuel filler flap, see “Fuel filler flap” (Y page 351).

1 Fuel filler flap 2 Fuel filler cap X Turn off the engine.

i Leaving the engine running and the fuel filler cap open can cause the yellow fuel tank reserve warning lamp to flash and the malfunction indicator lamp ? (USA only) or ± (Canada only) to illuminate. For more information, see also “Practical hints” (Y page 345).

X Remove the SmartKey from the starter

switch. KEYLESS-GO: Open the driver’s door (this puts the starter switch in position 0, same as with the SmartKey removed from the starter switch). The driver’s door then can be closed again.

X Opening: Press fuel filler flap 1 at the

point indicated by the arrow.

X Turn fuel filler cap 2 counterclockwise. X Take off fuel filler cap 2.

! The fuel filler cap is tethered to the fuel filler neck. Do not drop the cap. It could damage the vehicle paint finish.

X Set fuel filler cap 2 on fuel filler flap 1. X Fully insert filler nozzle unit and refuel. X Only fill your tank until the filler nozzle unit

cuts out – do not top off or overfill.

Check regularly and before a long trip For information on quantities and requirements of operating agents, see “Fuels, coolants, lubricants, etc.” (Y page 411). Check the following: REngine oil level (Y page 241) RTire inflation pressure (Y page 253) RCoolant level (Y page 243) RVehicle lighting (Y page 355) RWasher system and headlamp cleaning

system (Y page 244)

RBrake fluid

X Closing: Turn fuel filler cap 2 clockwise

until it audibly engages.

i Make sure to close the fuel filler flap before locking your vehicle as the flap locking pin prevents closing after you have locked the vehicle.

X Close fuel filler flap 1.

Low outside temperatures (diesel engine) ! Do not fill the tank with gasoline. Do not blend diesel fuel with gasoline or kerosene. The fuel system and engine will otherwise be damaged, which is not covered by the Mercedes-Benz Limited Warranty.

To prevent malfunctions, diesel fuel with improved cold flow characteristics is offered in the winter months. Check with your fuel retailer.

Operation

Engine compartment

Engine compartment Hood G Warning! Do not pull the release lever while the vehicle is in motion. Otherwise the hood could be forced open by passing air flow. This could cause the hood to come loose and injure you and/or others.

Opening G Warning! If you see flames or smoke coming from the engine compartment, or if the coolant temperature display indicates that the engine is overheated, do not open the hood. Move away from vehicle and do not open the hood until the engine has cooled. If necessary, call the fire department. G Warning! You could be injured when the hood is open – even when the engine is turned off. Parts of the engine can become very hot. To prevent burns, let the engine cool off completely before touching any

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Operation

Engine compartment components on the vehicle. Comply with all relevant safety precautions. G Warning! To help prevent personal injury, stay clear of moving parts when the hood is open and the engine is running. The radiator fan may continue to run for approximately 30 seconds or may even restart after the engine has been turned off. Stay clear of fan blades. G Warning! Vehicles with gasoline engine: The engine is equipped with a transistorized ignition system. Because of the high voltage it is dangerous to touch any components (ignition coils, spark plug sockets, diagnostic socket) of the ignition system Rwith the engine running Rwhile starting the engine Rwhen the ignition is switched on and the

engine is turned manually

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! To avoid damage to the windshield wipers or hood, never open the hood if the wiper arms are folded forward away from the windshield.

G Warning! Vehicles with diesel engine: The engine is equipped with a high-voltage electronic control unit for the injection system. Because of the high voltage it is dangerous to touch any components of the injection system (injectors, electrical wires) Rwith the engine running Rwhile starting the engine Rwhen the ignition is switched on

2 Handle for opening the hood X Press and hold handle 2.

The hood is unlocked.

X Pull up on the hood in direction of arrow

and then release it. The hood will be automatically held open at shoulder height by gas-filled struts.

1 Hood lock release lever X Pull release lever 1. The hood is unlocked.

Closing G Warning! When closing the hood, use extreme caution not to catch hands or fingers. Be careful that you do not close the hood on anyone. Make sure the hood is securely engaged before driving off. Do not continue driving if the hood can no longer engage after an accident, for example. The hood could otherwise come loose while the vehicle is in motion and injure you and/or others.

X Let the hood drop from a height of

approximately 1 ft (30 cm).

X Check to make sure the hood is fully

closed. If you can raise the hood at a point above the headlamps, then it is not properly closed. Open it again and let it drop with somewhat greater force.

Engine oil The amount of oil your engine needs will depend on a number of factors, including driving style. Increased oil consumption can occur when the vehicle is new or the vehicle is driven frequently at higher engine speeds. Engine oil consumption checks should only be made after the vehicle break-in period. ! Do not use any special lubricant additives, as these may damage the drive assemblies. Using special additives not approved by Mercedes-Benz may cause damage not covered by the Mercedes-Benz Limited Warranty. For further information contact an authorized Mercedes-Benz Center.

Notes on checking engine oil level When checking the oil level the vehicle must be parked on level ground and the vehicle must have been stationary for at least 5 minutes with the engine turned off.

Operation

Engine compartment

Checking engine oil level X Open the hood (Y page 239).

Example illustration ML 350 (ML 320 BlueTEC, ML 550, ML 63 AMG similar) 1 Oil dipstick 2 Upper (max) mark 3 Lower (min) mark X Pull out oil dipstick 1. X Wipe oil dipstick 1 clean.

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Adding engine oil ! Only use approved engine oils and oil

filters required for vehicles with Maintenance System. For a listing of approved engine oils and oil filters, contact an authorized Mercedes-Benz Center or visit www.mbusa.com (USA only). Using engine oils and oil filters of specification other than those expressly required for the Maintenance System, or changing of oil and oil filter at change intervals longer than those called for by the Maintenance System will result in engine or emission control system damage not covered by the Mercedes-Benz Limited Warranty.

Operation

Engine compartment X Fully insert oil dipstick 1 into the dipstick

guide tube.

X Pull out oil dipstick 1 again after approximately 3 seconds to obtain accurate reading. The oil level is correct when it is between lower (min) mark 3 and upper (max) mark 2 of oil dipstick 1.

i All models (except ML 63 AMG):

The filling quantity between the upper and lower marks on the oil dipstick is approximately 2.1 US qt. (2.0 l). ML 63 AMG: The filling quantity between the upper and lower marks on the oil dipstick is approximately 1.6 US qt. (1.5 l).

X If necessary, add engine oil. For more information on engine oil, see “Fuels, coolants, lubricants etc.” (Y page 411). For information on messages in the multifunction display concerning engine oil, see the “Practical hints” section (Y page 328).

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Example illustration ML 320 BlueTEC (ML 350, ML 550 similar) 1 Filler cap

ML 63 AMG 1 Filler cap

X Unscrew filler cap 1 from filler neck. X Add engine oil as required. Be careful not

to overfill with oil.

Be careful not to spill any oil when adding. Avoid environmental damage caused by oil entering the ground or water. ! Excess oil must be siphoned or drained off. It could cause damage to the engine and emission control system not covered by the Mercedes-Benz Limited Warranty.

X Screw filler cap 1 back on filler neck. For more information on engine oil, see the “Technical data” section (Y page 411) and (Y page 414).

Transmission fluid level The transmission fluid level does not need to be checked. If you notice transmission fluid loss or gearshifting malfunctions, have an authorized Mercedes-Benz Center check the transmission.

Coolant level The engine coolant is a mixture of water and anticorrosion/antifreeze. When checking the coolant level, the vehicle must be parked on level ground, and the coolant temperature must be below 158‡ (70†). G Warning! In order to avoid any potentially serious burns: RUse extreme caution when opening the hood if there are any signs of steam or coolant leaking from the cooling system, or if the coolant temperature indicator indicates that the coolant is overheated. RDo not remove pressure cap on coolant reservoir if coolant temperature is above 158‡ (70†). Allow engine to cool down before removing cap. The coolant reservoir contains hot fluid and is under pressure.

RUsing a rag, slowly open the cap

approximately 1/2 turn to relieve excess pressure. If opened immediately,

Operation

Engine compartment scalding hot fluid and steam will be blown out under pressure.

RDo not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts.

1 Marking bar in the expansion tank 2 Cap 3 Coolant expansion tank X Using a rag, turn cap 2 slowly

approximately 1/2 counterclockwise to release any excess pressure.

X Continue turning cap 2 counterclockwise

and remove it.

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Operation

Engine compartment

The coolant level is correct if the level Rfor cold coolant: reaches marking bar

1 in expansion tank 3

Rfor warm coolant: is approximately 0.6 in

(1.5 cm) higher

X Add coolant as required. X Replace and tighten cap 2. For more information on coolant, see the “Technical data” section (Y page 418) and (Y page 412).

Washer system and headlamp cleaning system G Warning! Washer solvent/antifreeze is highly flammable. Do not spill washer solvent/ antifreeze on hot engine parts, because it may ignite and burn. You could be seriously burned.

! Always use washer solvent/antifreeze

where temperatures may fall below freezing point. Failure to do so could result in damage to the washer system/fluid reservoir.

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! Only use washer fluid which is suitable for plastic lenses. Improper washer fluid can damage the plastic lenses of the headlamps.

! Do not use distilled or de-ionized water in the washer fluid reservoir. Otherwise, the washer fluid level sensor could be damaged.

X Opening washer fluid reservoir: Pull tab

of cap 1 upwards.

X Refill the washer fluid reservoir with MB

Windshield Washer Concentrate “MB SummerFit” and water (or commercially available premixed washer solvent/ antifreeze, depending on ambient temperatures) (Y page 419).

X Closing washer fluid reservoir: Press cap

1 onto filler hole until it engages.

For more information, see “Washer system and headlamp cleaning system” (Y page 413).

1 Cap for washer fluid reservoir Fluid for the washer system, rear window washer system and the headlamp cleaning system is supplied from the washer fluid reservoir. During all seasons, add MB Windshield Washer Concentrate “MB SummerFit” to water. Premix the washer fluid in a suitable container.

Tires and wheels Safety notes Contact an authorized Mercedes-Benz Center for information on tested and recommended rims and tires for summer and winter operation. They can also offer advice concerning tire service and purchase. G Warning! Replace rims or tires with the same designation, manufacturer and type as shown on the original part. For further information contact an authorized Mercedes-Benz Center. If incorrectly sized rims and tires are mounted, the wheel brakes or suspension components can be damaged. Also, the correct operating clearance of the wheels and the tires may no longer be correct. G Warning! Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them. When replacing rims, only use genuine Mercedes-Benz wheel bolts specified for the particular rim type. Failure to do so can

result in the bolts loosening and possibly an accident. Retreaded tires are not tested or recommended by Mercedes-Benz, since previous damage cannot always be recognized on retreads. The operating safety of the vehicle cannot be assured when such tires are used. G Warning! If you feel a sudden significant vibration or ride disturbance, or you suspect that possible damage to your vehicle has occurred, you should turn on the hazard warning flashers, carefully slow down, and drive with caution to an area which is a safe distance from the road. Inspect the tires and the vehicle underbody for possible damage. If the vehicle or tires appear unsafe, have the vehicle towed to the nearest authorized Mercedes-Benz Center or tire dealer for repairs. G Warning! Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You could lose control of the vehicle. Continued driving with a flat tire or driving at high

Operation

Tires and wheels

speed with a flat tire will cause excessive heat build-up and possibly a fire.

Important guidelines ROnly use sets of tires and rims of the same

type and make.

RTires must be of the correct size for the rim. RBreak in new tires for approximately

60 miles (100 km) at moderate speeds.

RRegularly check the tires and rims for

damage. Dented or bent rims can cause tire inflation pressure loss and damage to the tire beads.

RIf vehicle is heavily loaded, check tire

inflation pressure and correct as required. RDo not allow your tires to wear down too far. Adhesion properties on wet roads are sharply reduced at tread depths of less than 1/8 in (3 mm).

RWhen replacing individual tires, you should mount new tires on the front wheels first (on vehicles with same-sized wheels all around).

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Operation

Tires and wheels Tire care and maintenance G Warning! Regularly check the tires for damage. Damaged tires can cause tire inflation pressure loss. As a result, you could lose control of your vehicle. Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them. Check the tire inflation pressure at least every other week. For more information on checking tire inflation pressure, see “Recommended tire inflation pressure” (Y page 251).

Tire inspection Every time you check the tire inflation pressure, you should also inspect your tires for the following: Rexcessive treadwear (Y page 246) Rcord or fabric showing through the tire’s

rubber

Rbumps, bulges, cuts, cracks or splits in the

tread or side of the tire

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Replace the tire if you find any of the above conditions. Make sure you also inspect the spare tire periodically for condition and inflation. Spare tires will age and become worn over time even if never used, and thus should be inspected and replaced when necessary.

Life of tire G Warning! Tires and spare tire should be replaced after 6 years, regardless of the remaining tread. The service life of a tire is dependent upon varying factors including but not limited to: RDriving style RTire inflation pressure RDistance driven

Tread depth G Warning! Although the applicable federal motor vehicle safety laws consider a tire to be worn when the treadwear indicators (TWI) become visible at approximately 1/16 in

(1.6 mm), we recommend that you do not allow your tires to wear down to that level. As tread depth approaches 1/8 in (3 mm), the adhesion properties on a wet road are sharply reduced. Depending upon the weather and/or road surface (conditions), the tire traction varies widely. Do not allow your tires to wear down too far. Adhesion properties on wet roads are sharply reduced at tread depths of less than 1/8 in (3 mm). Treadwear indicators (TWI) are required by law. These indicators are located in six places on the tread circumference and become visible at a tread depth of approximately 1/16 in (1.6 mm), at which point the tire is considered worn and should be replaced. The recommended minimum tire tread depth for summer tires is 1/8 in (3 mm). The recommended minimum tire tread depth for winter tires is 1/6 in (4 mm).

Direction of rotation Unidirectional tires offer added advantages, such as better hydroplaning performance. To benefit, however, you must make sure the tires rotate in the direction specified. An arrow on the sidewall indicates the intended direction of rotation (spinning) of the tire. Spare wheels may be mounted against the direction of rotation (spinning) even with a unidirectional tire for temporary use only until the regular drive wheel has been repaired or replaced. Always observe and follow applicable temporary use restrictions and speed limitations indicated on the spare wheel.

Operation

Tires and wheels

Loading the vehicle Two labels on your vehicle show how much weight it may properly carry. (1) The Tire and Loading Information placard

can be found on the driver’s door B-pillar. This placard tells you important information about the number of people that can be in the vehicle and the total weight that can be carried in the vehicle. It also contains information on the proper size and recommended tire inflation pressures for the original equipment tires on your vehicle.

(2) The certification label, also found on the driver’s door B-pillar. It tells you about the gross weight capacity of your vehicle, called the Gross Vehicle Weight Rating (GVWR). The GVWR includes the weight of the vehicle, all occupants, fuel and cargo. The certification label also tells you about the front and rear axle weight capacity, called the Gross Axle Weight Rating (GAWR). The GAWR is the total allowable weight that can be carried by a single axle (front or rear). Never exceed the GVWR or GAWR for either the front axle or rear axle.

247

1 TWI (Tread Wear Indicator) The treadwear indicator appears as a solid band across the tread.

Storing tires ! Keep unmounted tires in a cool, dry place with as little exposure to light as possible. Protect tires from contact with oil, grease and fuels.

Cleaning tires ! Never use a round nozzle to power wash tires. The intense jet of water can result in damage to the tire. Always replace a damaged tire.

Operation

Tires and wheels

1 Driver’s door B-pillar Following is a discussion on how to work with the information contained on the Tire and Loading Information placard with regards to loading your vehicle.

248

Tire and Loading Information G Warning! Do not overload the tires by exceeding the specified load limit as indicated on the Tire and Loading Information placard on the driver’s door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure.

Tire and Loading Information placard i Data shown on Tire and Loading

Information placard example are for illustration purposes only. Load limit data are specific to each vehicle and may vary from data shown in the following illustration. Refer to Tire and Loading Information placard on vehicle for actual data specific to your vehicle.

1 Load limit information on the Tire and

Loading Information placard

The Tire and Loading Information placard showing the load limit information is located on the driver’s door B-pillar (Y page 247). X Locate the statement “The combined weight of occupants and cargo should never exceed XXX kilograms or XXX lbs.” on the Tire and Loading Information placard.

The combined weight of all occupants, cargo/luggage and trailer tongue load (if applicable) should never exceed the weight referenced in that statement.

Seating capacity The seating capacity gives you important information on the number of occupants that can be in the vehicle. Observe front and rear seating capacity. The Tire and Loading Information placard showing the seating capacity is located on the driver’s door B-pillar (Y page 247). i Data shown on Tire and Loading

Information placard example are for illustration purposes only. Seating capacity data are specific to each vehicle and may vary from data shown in the following illustration. Refer to Tire and Loading Information placard on vehicle for actual data specific to your vehicle.

Operation

Tires and wheels X Step 3: Subtract the combined weight of

the driver and passengers from XXX kilograms or XXX lbs.

X Step 4: The resulting figure equals the

available amount of cargo and luggage load capacity. For example, if the “XXX” amount equals 1 400 lbs and there will be five 150 lbs passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lbs (1 400 - 750 (5 x 150) = 650 lbs).

X Step 5: Determine the combined weight of

luggage and cargo being loaded on the vehicle. That weight may not safely exceed the available cargo and luggage load capacity calculated in step 4.

X Step 6 (if applicable): If your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle (Y page 251).

The following table shows examples on how to calculate total and cargo load capacities with varying seating configurations and number and size of occupants. The following examples use a load limit of 1 500 lbs. This is for illustration purposes only. Make sure

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1 Seating capacity information on the Tire

and Loading Information placard

Steps for determining correct load limit The following steps have been developed as required of all manufacturers under Title 49, Code of U.S. Federal Regulations, Part 575
pursuant to the “National Traffic and Motor Vehicle Safety Act of 1966”. X Step 1: Locate the statement “The

combined weight of occupants and cargo should never exceed XXX kg or XXX lbs.” on your vehicle’s Tire and Loading Information placard.

X Step 2: Determine the combined weight of the driver and passengers that will be riding in your vehicle.

Operation

Tires and wheels you are using the actual load limit for your vehicle stated on the vehicle’s Tire and Example Combined weight limit of occupants and cargo from Tire and Loading Information placard

Number of occupants (driver and passengers)

1 500 lbs

1 500 lbs

1 500 lbs

The higher the weight of all occupants, the less cargo and luggage load capacity is available. For more information, see “Trailer tongue load” (Y page 251).

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Loading Information placard (Y page 249).

Seating configuration

Occupants weight

Combined weight of all occupants

Available cargo/luggage and trailer tongue weight (total load limit from Tire and Loading Information placard minus combined weight of all occupants)

front: 2
rear: 3

front: 1
rear: 2

Occupant 1: 150 lbs Occupant 2: 180 lbs Occupant 3: 160 lbs Occupant 4: 140 lbs Occupant 5: 120 lbs

Occupant 1: 200 lbs Occupant 2: 190 lbs Occupant 3: 150 lbs

750 lbs

1 500 lbs - 750 lbs = 750 lbs

540 lbs

1 500 lbs - 540 lbs = 960 lbs

front: 1

Occupant 1: 150 lbs

150 lbs

1 500 lbs - 150 lbs = 1 350 lbs

Certification label Even after careful determination of the combined weight of all occupants, cargo and the trailer tongue load (if applicable) (Y page 251) as to not exceed the permissible load limit, you must make sure your vehicle never exceeds the Gross Vehicle

Weight Rating (GVWR) and the Gross Axle Weight Rating (GAWR) for either the front or rear axle. You can obtain the GVWR and GAWR from the certification label. The certification label can be found on the driver’s door B-pillar, see the “Technical data” section (Y page 397).

Gross Vehicle Weight Rating (GVWR): The total weight of the vehicle, all occupants, all cargo, and the trailer tongue load must never exceed the GVWR. Gross Axle Weight Rating (GAWR): The total allowable weight that can be carried by a single axle (front or rear). To assure that your vehicle does not exceed the maximum permissible weight limits (GVWR and GAWR for front and rear axle), have the loaded vehicle (including driver, passengers and all cargo and, if applicable, trailer fully loaded) weighed on a suitable commercial scale.

Trailer tongue load The tongue load of any trailer is an important weight to measure because it affects the load you can carry in your vehicle. If a trailer is towed, the tongue load must be added to the weight of all occupants riding and any cargo you are carrying in the vehicle. The tongue load typically is between 8% and 15% of the trailer weight and everything loaded in it.

Recommended tire inflation pressure G Warning! Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Do not overload the tires by exceeding the specified load limit as indicated on the Tire and Loading Information placard on the driver’s door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure. Your vehicle is equipped with the Tire and Loading Information placard located on the driver’s door B-pillar (Y page 247).

Operation

Tires and wheels The tire inflation pressure should be checked regularly and should only be adjusted on cold tires. The tires can be considered cold if the vehicle has been parked for at least 3 hours or driven less than 1 mile (1.6 km). Follow recommended cold tire inflation pressures listed on Tire and Loading Information placard on the driver’s door B-pillar. Keeping the tires properly inflated provides the best handling, tread life and riding comfort. In addition to the Tire and Loading Information placard on the driver’s door B-pillar, also consult the tire inflation pressure label (if available) on the inside of the filler flap for any additional information pertaining to special driving situations. For more information, see “Important notes on tire inflation pressure” (Y page 252). i Data shown on Tire and Loading

Information placard example are for illustration purposes only. Tire data are specific to each vehicle and may vary from data shown in the following illustration. Refer to Tire and Loading Information placard on vehicle for actual data specific to your vehicle.

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Operation

Tires and wheels

1 Tire and Loading Information placard with

recommended cold tire inflation pressures

The Tire and Loading Information placard lists the recommended cold tire inflation pressures for maximum loaded vehicle weight. The tire inflation pressures listed apply to the tires installed as original equipment.

Important notes on tire inflation pressure G Warning! If the tire inflation pressure drops repeatedly, check the tires for punctures from foreign objects and/or whether air is

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leaking from the valves or from around the rim. Tire temperature and tire inflation pressure are also increased while driving, depending on the driving speed and the tire load. If you will be driving your vehicle at high speeds of 100 mph (160 km/h) or higher, where it is legal and conditions allow, consult the tire inflation pressure label on the inside of the fuel filler flap (if available) on how to adjust the cold tire inflation pressure. If you do not adjust the tire inflation pressure, excessive heat can build up and result in sudden tire failure. If your vehicle is not equipped with the tire inflation pressure label on the inside of the fuel filler flap, contact an authorized Mercedes-Benz Center for proper tire inflation pressure. i Driving comfort may be reduced when the

tire inflation pressure is adjusted to the value for speeds above 100 mph (160 km/h) as specified on the tire inflation pressure label located on the inside of the fuel filler flap.

Make sure to readjust the tire inflation pressure for normal driving speeds. You

should wait until the tires are cold before adjusting the tire inflation pressure. Some vehicles may have supplemental tire inflation pressure information for vehicle loads less than the maximum loaded vehicle condition. If such information is provided, it can be found on the tire inflation pressure label located on the inside of the fuel filler flap (Y page 237). Tire inflation pressure changes by approximately 1.5 psi (0.1 bar) per 18‡ (10†) of air temperature change. Keep this in mind when checking tire inflation pressure where the temperature is different from the outside temperature.

Potential problems associated with underinflated and overinflated tires Underinflated tires G Warning! Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated.

Underinflated tires can Rcause excessive and uneven tire wear Radversely affect fuel economy Rlead to tire failure from being overheated Radversely affect handling characteristics

Overinflated tires G Warning! Follow recommended tire inflation pressures. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Overinflated tires can Radversely affect handling characteristics Rcause uneven tire wear Rbe more prone to damage from road

hazards

Radversely affect ride comfort Rincrease stopping distance

Checking tire inflation pressure

Safety notes G Warning! Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Do not overload the tires by exceeding the specified load limit as indicated on the Tire and Loading Information placard on the driver’s door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure. Check the tire inflation pressure at least every other week.

Operation

Tires and wheels Check and adjust the tire inflation pressure when the tires are cold. The tires can be considered cold if the vehicle has been parked for at least 3 hours or driven less than 1 mile (1.6 km). If you check the tire inflation pressure when the tires are warm (the vehicle has been driven for several miles or sitting less than 3 hours), the reading will be approximately 4 psi (0.3 bar) higher than the cold reading. This is normal. Do not let air out to match the specified cold tire inflation pressure. Otherwise, the tire will be underinflated.

Checking tire inflation pressure manually Follow the steps below to achieve correct tire inflation pressure: X Remove the cap from the valve on one tire. X Firmly press a tire gauge onto the valve. X Read the tire inflation pressure on the tire

gauge and check against the recommended tire inflation pressure on the Tire and Loading Information placard on the driver’s door B-pillar (Y page 247). If necessary, add air to achieve the recommended tire inflation pressure.

253

Operation

Tires and wheels X If you have overfilled the tire, release tire

inflation pressure by pushing the metal stem of the valve with e.g. a tip of a pen. Then recheck the tire inflation pressure with the tire gauge. X Install the valve cap. X Repeat this procedure for each tire.

Run Flat Indicator (Canada only) While the vehicle is being driven, the Run Flat Indicator monitors the set tire inflation pressures by evaluating each wheel’s rotational speed. This allows the system to detect a significant loss of pressure in a tire. If a wheel’s rotational speed changes due to falling tire inflation pressure, you will see a corresponding warning message in the multifunction display. The Run Flat Indicator may function in a restricted manner or with a delay Rwhen snow chains are mounted to the

vehicle

Rin the presence of ice and snow

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Rwhen you are driving on a loose surface

(e.g. sand or gravel)

Rwhen you are driving in a very sporty

manner (involving rapid acceleration or high speeds in curves) G Warning! When the multifunction display shows the message Tire Pressure Check Tires, one or more of your tires is significantly underinflated. You should stop and check your tires as soon as possible, and inflate them to the proper tire inflation pressure as indicated on the vehicle’s Tire and Loading Information placard or, if available, on the tire inflation pressure label. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Each tire, including the spare, should be checked every other week when cold and set to the recommended tire inflation pressure as specified on the Tire and Loading Information placard on the driver’s door B-pillar or, if available, on the tire inflation pressure label located on the inside of the fuel filler flap.

i The recommended tire inflation pressures

for your vehicle can be found on the Tire and Loading Information placard located on the driver’s door B-pillar (Y page 247) or, if available, on the tire inflation pressure label on the on the inside of the fuel filler flap (Y page 238). The tire inflation pressures are not listed in the Operator's Manual. G Warning! The Run Flat Indicator does not provide a warning for wrongly selected tire inflation pressures. Always adjust tire inflation pressure according to the Tire and Loading Information placard on the driver’s door B-pillar or, if available, on the tire inflation pressure label located on the inside of the fuel filler flap. The Run Flat Indicator does not replace regular checks of the tire inflation pressures since a gradual pressure loss in more than one tire cannot be detected by the Run Flat Indicator. The Run Flat Indicator is not able to issue a warning due to a sudden dramatic loss of tire inflation pressure (e.g. tire blowout caused by a foreign object). In this case bring the vehicle to a halt by carefully

applying the brakes and avoiding abrupt steering maneuvers.

Restarting the Run Flat Indicator The Run Flat Indicator must be restarted in the following situations: Rafter you have changed the tire inflation

pressure

Rafter you have replaced the wheels or tires Rafter you have installed new wheels or tires X Using the Tire and Loading Information placard on the driver’s door B-pillar or, if available, the tire inflation pressure label on the inside of the fuel filler flap, make sure the tire inflation pressure of all four tires is correct. G Warning! The Run Flat Indicator can only warn you in a reliable manner if you have set the correct tire inflation pressures for each tire. If an incorrect tire inflation pressure was set, the system will monitor the pressure according to the incorrect value.

X Switch on the ignition. X Make sure the standard display appears in

the multifunction display (Y page 144).

X Press button k or j on the

multifunction steering wheel repeatedly until the following message appears in the multifunction display: Run Flat Indicator Active Menu: R-Button

X Press the reset button (Y page 138).

The following message will appear in the multifunction display: Restart Run Flat Indicator?

X If you wish to confirm: Press button

æ. The following message will appear in the multifunction display: Run Flat Indicator Restarted After a certain “learning phase”, the Run Flat Indicator checks the set pressure values for all four tires.

Operation

Tires and wheels

X If you wish to cancel: Press button

ç.

or X Wait until the message

Restart Run Flat Indicator? disappears.

Tire Pressure Monitoring System (TPMS), (USA only) Your vehicle is equipped with a Tire Pressure Monitoring System (TPMS). It measures the tire inflation pressure in the vehicle’s tires and issues warnings in case of pressure loss. The Tire Pressure Monitoring System (TPMS) is equipped with a combination low tire pressure/TPMS malfunction telltale in the instrument cluster. Depending on how the telltale illuminates, it indicates a low tire pressure condition or a malfunction in the TPMS system itself: RIf the telltale illuminates continuously, one

or more of your tires are significantly

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Operation

Tires and wheels

underinflated. There is no malfunction in the TPMS.

RIf the telltale flashes for 60 seconds and then stays illuminated, the TPMS system itself is not operating properly.

The TPMS only functions on wheels that are equipped with the proper electronic sensors. It monitors the tire inflation pressure, as selected by the driver, in all four tires. A warning is issued to alert you to a decrease in pressure in one or more of the tires. G Warning! The TPMS does not indicate a warning for wrongly selected inflation pressures. Always adjust tire inflation pressure according to the Tire and Loading Information placard or, if available, on the supplemental tire inflation pressure information on the inside of the fuel filler flap. The TPMS is not able to issue a warning due to a sudden dramatic loss of pressure (e.g. tire blowout caused by a foreign object). In this case bring the vehicle to a halt by carefully applying the brakes and avoiding abrupt steering maneuvers.

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G Warning! Each tire, including the spare (if provided), should be checked every other week when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the Tire and Loading Information placard on the driver’s door B-pillar or, if available, the tire inflation pressure label on the inside of the fuel filler flap. If your vehicle has tires of a different size than the size indicated on the Tire and Loading Information placard or, if available, the tire inflation pressure label, you should determine the proper tire inflation pressure for those tires. As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the

vehicle’s handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale. Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately 1 minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after

replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.

i If a condition causing the TPMS to

malfunction develops, it may take up to 10 minutes for the system to signal a malfunction using the TPMS telltale flashing and illumination sequence. The telltale extinguishes after a few minutes driving if the malfunction has been corrected.

i Operating radio transmission equipment (e.g. wireless headsets, two-way radios) in or near the vehicle could cause the TPMS to malfunction.

i This device complies with Part 15 of the

FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful

2.

interference, and this device must accept any interference received, including interference that may cause undesired.

Any unauthorized modification to this device could void the user’s authority to operate the equipment.

Tire inflation pressure warnings If the system detects a significant loss of tire inflation pressure in one or more than one tire, a message appears in the multifunction display and a warning signal sounds.

Example illustration

Restarting the TPMS G Warning! It is the driver’s responsibility to set the reference values to the recommended cold tire inflation pressure. Underinflated tires affect the ability to steer or brake the vehicle. You might lose control over the vehicle. When you restart the TPMS, the system sets new reference values for each tire.

Operation

Tires and wheels The TPMS must be restarted when you have adjusted the tire inflation pressure to a new level (e.g. because of different load or driving conditions). The TPMS is then recalibrated to the current tire inflation pressures. Restart the TPMS after adjusting the tire inflation pressure to the inflation pressure recommended for the vehicle operating condition. Tire pressure should only be adjusted on cold tires. Observe the recommended tire inflation pressure on the Tire and Loading Information placard on the driver’s door B-pillar. Some vehicles may have supplemental tire pressure information for driving at high speeds or for vehicle loads less than the maximum loaded vehicle condition. If such information is provided, it can be found on the inside of the fuel filler flap. X Using the Tire and Loading Information

placard on the driver’s door B-pillar (Y page 247) or, if available, the supplemental tire inflation pressure information on the inside of the fuel filler flap (Y page 237), make sure the tire inflation pressure of all four tires is correct.

X Switch on the ignition. X Press button è or ÿ on the

multifunction steering wheel repeatedly

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Operation

Tires and wheels

until the standard display appears in the multifunction display (Y page 144). X Press button j or k on the

multifunction steering wheel repeatedly until the following message appears in the multifunction display: Tire Pressure Monitor Active Menu: R-Button

X Press the reset button (Y page 138). The following message appears in the multifunction display: Restart tire pressure monitor?

X If you wish to confirm: Press button

æ. The following message appears in the multifunction display: Tire Pressure Monitor Restarted After driving a few minutes the system verifies that the current tire inflation pressures are within the system’s specified range. Afterwards, the current tire inflation

pressures are accepted as reference values and then monitored.

X If you wish to cancel: Press button

ç.

MOExtended system The MOExtended system allows you to continue driving your vehicle even if there is a total loss of pressure in one or more tires. You may only use the MOExtended system in conjunction with the Run Flat Indicator (Y page 254) or the TPMS (Y page 255). i Vehicles with MOExtended system are not factory-equipped with a TIREFIT kit. When retrofitting with tires that do not have run-flat characteristics, e.g. winter tires, you should also equip your vehicle with a TIREFIT kit. TIREFIT kits are available at any authorized Mercedes-Benz Center.

For information on driving in case of pressure loss in one or more tires (emergency mode), see the “Practical Hints” section (Y page 379).

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Tire labeling Besides tire name (sales designation) and manufacturer name, a number of markings can be found on a tire. Following are some explanations for the markings on your vehicle’s tires:

1 Uniform Tire Quality Grading Standards

2 DOT, Tire Identification Number

(Y page 264)

(Y page 262)

3 Maximum tire load (Y page 263) 4 Maximum tire inflation pressure

(Y page 263)

5 Manufacturer 6 Tire ply material (Y page 265) 7 Tire size designation, load and speed

rating (Y page 259)

8 Load identification (Y page 262) 9 Tire name

i For illustration purposes only. Actual data

on tires are specific to each vehicle and may vary from data shown in above illustration. For more information, see “Rims and tires” (Y page 401).

Tire size designation, load and speed rating

1 Tire width

2 Aspect ratio in % 3 Radial tire code 4 Rim diameter 5 Tire load rating 6 Tire speed rating

i For illustration purposes only. Actual data

on tires are specific to each vehicle and may vary from data shown in above illustration.

General: Depending on the design standards used, the tire size molded into the sidewall may have no letter or a letter preceding the tire size designation. No letter preceding the size designation (as illustrated above): Passenger car tire based on European design standards. Letter “P” preceding the size designation: Passenger car tire based on U.S. design standards. Letter “LT” preceding the size designation: Light Truck tire based on U.S. design standards. Letter “T” preceding the size designation: Temporary spare tires which are high pressure compact spares designed for temporary emergency use only.

Operation

Tires and wheels

Tire width Tire width 1 indicates the nominal tire width in millimeters.

Aspect ratio Aspect ratio 2 is the dimensional relationship between tire section height and section width and is expressed in percentage. The aspect ratio is arrived at by dividing section height by section width.

Tire code Tire code 3 indicates the tire construction type. The “R” stands for radial tire type. Letter “D” means diagonal or bias ply construction; letter “B” means belted-bias ply construction. At the tire manufacturer’s option, any tire with a speed capability above 149 mph (240 km/h) can include a “ZR” in the size designation (for example: 245/40 ZR 18). For additional information, see “Tire speed rating” (Y page 260). Rim diameter Rim diameter 4 is the diameter of the bead seat, not the diameter of the rim edge. The rim diameter is indicated in inches (in).

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Operation

Tires and wheels Tire load rating G Warning! The tire load rating must always be at least half of the GAWR of your vehicle. Otherwise, tire failure may be the result which may cause an accident and/or serious injury to you or others. Always replace rims and tires with the same designation, manufacturer and type as shown on the original part. G Warning! Do not overload the tires by exceeding the specified load limit as indicated on the Tire and Loading Information placard on the driver’s door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure. Tire load rating 5 is a numerical code associated with the maximum load a tire can support. For example, a load rating of 91 corresponds to a maximum load of 1356 lb (615 kg) the tire is designed to support. See also “Maximum tire load” (Y page 263) where the

260

maximum load associated with the load index is indicated in kilograms and lbs. For additional information on tire load rating, see “Load identification” (Y page 262). Tire speed rating G Warning! Even when permitted by law, never operate a vehicle at speeds greater than the maximum speed rating of the tires. Exceeding the maximum speed for which tires are rated can lead to sudden tire failure, causing loss of vehicle control and possibly resulting in an accident and/or serious personal injury and possible death, for you and for others. Regardless of the tire speed rating, local speed limits should be obeyed. Use prudent driving speeds appropriate to prevailing conditions. Tire speed rating 6 indicates the approved maximum speed for the tire.

Summer tires Index

Speed rating

up to 100 mph (160 km/h)

up to 106 mph (170 km/h)

up to 112 mph (180 km/h)

up to 118 mph (190 km/h)

up to 130 mph (210 km/h)

up to 149 mph (240 km/h)

up to 168 mph (270 km/h)

up to 186 mph (300 km/h)

ZR...Y

up to 186 mph (300 km/h)

ZR...(..Y)

above 186 mph (300 km/h)

ZR

above 149 mph (240 km/h)

RAt the tire manufacturer’s option, any tire

with a speed capability above 149 mph (240 km/h) can include a “ZR” in the size designation (for example: 245/40 ZR18). To determine the maximum speed

capability of the tire, the service description for the tire must be referred to. The service description is comprised of tire load rating 5 and tire speed rating 6. If your tire includes “ZR” in the size designation and no service description is given, the tire manufacturer must be consulted for the maximum speed capability. If a service description is given, the speed capability is limited by the speed symbol in the service description. Example: 245/40 ZR18 97Y. In this example, “97Y” is the service description. The letter “Y” designates the speed rating and the speed capability of the tire is limited to 186 mph (300 km/h).

RAny tire with a speed capability above

186 mph (300 km/h) must include a “ZR” in the size designation AND the service description must be placed in parenthesis. Example: 275/40 ZR 18 (99Y). The “(Y)” speed rating in parenthesis designates the maximum speed capability of the tire as being above 186 mph (300 km/h). Consult the tire manufacturer for the actual maximum permissible speed of the tire.

16 or M+S.for winter tires

All-season and winter tires Speed rating Index

Q M+S16 up to 100 mph (160 km/h)

T M+S16

up to 118 mph (190 km/h)

H M+S16 up to 130 mph (210 km/h)

V M+S16

up to 149 mph (240 km/h)

i Not all M+S rated tires provide special