2011 Mercedes-benz CL Class Owners Manual

Booklet or for further information consult a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.

Have the battery charge checked more frequently if you use the vehicle mainly for short trips or if you leave it standing idle for a lengthy period. To prevent damage from corrosion, only replace the battery with one that has a central ventilation cover. Only replace a battery with a battery that has been recommended by Mercedes-Benz. Consult an authorized Mercedes-Benz Center if you wish to leave your vehicle parked up for a long period of time. G Warning Comply with safety precautions and take protective measures when handling batteries.

Risk of explosion

Fire, naked flames and smoking are prohibited when handling the battery. Avoid creating sparks. Battery acid is caustic. Avoid contact with the skin, eyes or clothing. Wear suitable protective clothing, in particular gloves, an apron and a face mask.

Immediately rinse acid splashes off with clean water. Consult a doctor if necessary. Wear eye protection.

Keep children away.

Observe this Operator's Manual.

H Environmental note Do not dispose of batteries in the household rubbish. Dispose of defective batteries in an environmentally responsible manner. Take them to an authorized Mercedes-Benz Center or to a special collection point for old batteries. G Warning Failure to follow these instructions can result in severe injury or death. Never lean over batteries while connecting. You might get injured. Battery fluid contains sulfuric acid. Do not allow this fluid to come in contact with eyes, skin or clothing. In case it does, immediately flush affected area with water and seek medical help if necessary. A battery will also produce hydrogen gas, which is flammable and explosive. Keep flames or sparks away from battery, avoid improper connection of jumper cables, smoking etc. G Warning Do not place any metal objects on the battery as this could result in a short circuit. Use leak-proof batteries only to avoid the risk of acid burns in the event of an accident.

Battery

427

Take care that you do not become statically charged, e.g. by wearing synthetic clothing or rubbing against textiles. For this reason, you also should not pull or push the battery over carpets or other synthetic materials. Never touch the battery first. First, touch the outside body of the vehicle in order to release any possible electrostatic charges. Do not rub the battery with rags or cloths. The battery could explode if touched due to electrostatic charge or due to spark formation.

! Switch off the engine and remove the key before disconnecting the terminal clamps from the battery. On vehicles with KEYLESS-GO, make sure that the ignition is switched off. Check that all the indicator lamps in the instrument cluster are off. You may otherwise destroy electronic components, such as the alternator.

! Like other batteries, the vehicle battery may discharge over time if you do not use the vehicle. In this case, have the battery disconnected at a qualified specialist workshop, e.g. an authorized Mercedes- Benz Center. You can also charge the battery with a charger recommended by Mercedes-Benz. Contact an authorized Mercedes-Benz Center for further information. The battery, breather hose and cover of the positive terminal clamp must be installed securely during operation.

i Remove the key if you park the vehicle

and do not require any electrical consumers. The vehicle will then use very little energy, thus conserving battery power.

Mercedes-Benz recommends that you do not carry out work on batteries yourself, e.g. removing, charging or replacing. Always have this work performed at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.

as when connecting the donor battery in the jump-starting procedure (Y page 429).

X Read the battery charger's operating

instructions before charging the battery.

428 Battery

Charging the battery G Warning Never charge a battery while still installed in the vehicle unless the accessory battery charge unit approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions that may result in paint damage, corrosion or personal injury. An accessory battery charge unit specially adapted for Mercedes-Benz vehicles and tested and approved by Mercedes-Benz is available. It permits the charging of the battery in its installed position. Contact an authorized Mercedes-Benz Center for information and availability. Charge the battery in accordance with the separate instructions for the accessory battery charger. G Warning There is a risk of acid burns during the charging process due to the gases which escape from the battery. Do not lean over the battery during the charging process. G Warning Battery acid is caustic. Avoid contact with the skin, eyes or clothing.

! Only charge the installed battery with a battery charger which has been tested and approved by Mercedes-Benz. These battery chargers allow the battery to be charged while still installed.

! Only use battery chargers with a

maximum charging voltage of 14.8 V.

! Only charge the battery using the jump-

starting connection point.

The jump-starting connection point is in the engine compartment (Y page 429). X Open the hood (Y page 404). X Connect the battery charger to the positive terminal and earth point in the same order

Jump-starting 429

Jump-starting

G Warning Failure to follow these directions will cause damage to the electronic components, and can lead to a battery explosion and severe injury or death. Never lean over batteries while connecting or jump starting. You might get injured. Battery fluid contains sulfuric acid. Do not allow this fluid to come in contact with eyes, skin or clothing. In case it does, immediately flush affected area with water, and seek medical help if necessary. A battery will also produce hydrogen gas, which is flammable and explosive. Keep flames or sparks away from battery, avoid improper connection of jumper cables, smoking, etc. Attempting to jump start a frozen battery can result in it exploding, causing personal injury. Read all instructions before proceeding.

! Avoid repeated and lengthy starting attempts. Otherwise, non-combusted fuel may

damage the catalytic converter27 and create a risk of fire. Do not use a rapid-charging device to start the engine. Make sure the jumper cables are not damaged. Make sure the jumper cables are not touching any other metal objects when they are connected to the battery.

If your vehicle's battery is discharged, the engine can be jump-started from another vehicle or from a second battery using jumper cables. Observe the following points: X The battery is not accessible in all vehicles. If the other vehicle's battery is not accessible,

jump-start the vehicle using a second battery or a jump-starting device.

X Only jump-start the vehicle when the engine and catalytic converter are cold.28
X Do not start the engine if the battery is frozen. Let the battery thaw first. X Jump-starting may only be performed from batteries with a nominal voltage of 12 V.

If you jump-start using a battery with higher voltage, it may damage the electrical systems of the vehicle.

X Only use jumper cables that have a sufficient cross-section and insulated terminal clamps. X Make sure that the jumper cables cannot come into contact with parts, such as the pulley

or the fan. These parts move when the engine is started and while it is running.

X If the battery is fully discharged, leave the battery that is being used to jump-start connected

for a few minutes before attempting to start. This charges the empty battery a little.

i Jumper cables and further information about jump-starting can be obtained from any

authorized Mercedes-Benz Center.

X Make sure that the two vehicles do not touch. X Secure the vehicle by applying the electric parking brake. X Shift the transmission to position P.

27 Only vehicles with a gasoline engine. 28 Only vehicles with a gasoline engine.

430 Towing and tow-starting

X Switch off all electrical consumers (e.g. radio, blower, etc.). X Open the hood (Y page 404).

Position number A identifies the charged battery of the other vehicle or an equivalent jump- starting device. ! Never swap the terminal connections. X Remove the cover from positive terminal :. X Connect positive terminal : on your vehicle to positive terminal ; of donor battery A

using the jumper cable, beginning with your own battery.

X Start the engine of the donor vehicle and run it at idling speed. X Connect negative terminal = of donor battery A to earth point ? of your vehicle using

the jumper cable, connecting the jumper cable to donor battery A first.

X Start the engine. X First, remove the jumper cable from earth point ? and negative terminal =, then from

positive terminal : and positive terminal ;, each time disconnecting from the battery on your own vehicle first.

X Have the battery checked at a qualified specialist workshop, e.g. an authorized Mercedes-

Benz Center.

Towing and tow-starting Important safety notes G Warning If you tow the vehicle, you must use a rigid towing bar if:

Rthe engine will not run. Rthere is a malfunction in the brake system. Rthere is a malfunction in the power supply

or the vehicle's electrical system.

With the engine not running, there is no power assistance for the brake and steering

systems. You will then need considerably more force to steer and to brake and the brake pedal travel will be longer. If necessary, depress the brake pedal with maximum force. Before towing away, make sure that the steering can be moved and is not locked. If you tow or tow-start another vehicle, its weight must not exceed the maximum permissible gross vehicle weight of your vehicle. G Warning The vehicle is braked when the HOLD function or DISTRONIC PLUS is activated. Therefore, deactivate HOLD and DISTRONIC PLUS if the vehicle is to be towed.

It is better to have the vehicle transported than to have it towed. ! You may only tow the vehicle a maximum

distance of 30 miles (50 km). A towing speed of 30 mph (50 km/h) must not be exceeded. For towing distances over 30 miles (50 km), the vehicle must loaded onto a transporter.

! Make sure that the electric parking brake is released. If the electric parking brake is faulty, visit a qualified specialist workshop. Mercedes-Benz recommends that you use an authorized Mercedes-Benz Center for this purpose.

! Only secure the tow rope or tow bar at the towing eyes. Otherwise, the vehicle could be damaged.

! Do not use the towing eye for recovery,

as this could damage the vehicle. If in doubt, recover the vehicle with a crane.

! Drive slowly and smoothly when towing. Excessive tractive power could otherwise damage the vehicles.

! Do not tow with sling-type equipment.

This could damage the vehicle.

Towing and tow-starting 431

! When towing vehicles with KEYLESS-GO,

use the key instead of the Start/Stop button. Otherwise, the automatic transmission may shift to position P when the driver's or front-passenger door are opened, which could lead to damage to the transmission.

! Vehicles with automatic transmission

must not be started by tow-starting. This could otherwise damage the transmission. ! Vehicles with 4MATIC must not be towed with the front or rear axle raised. This could otherwise damage the transmission. The automatic transmission must be in position N when the vehicle is being towed. Make sure that the battery is connected and charged. You will otherwise not be able to: Rturn the SmartKey to position 2 in the

ignition lock.

Rshift the automatic transmission to

position N.

i Switch off the automatic locking feature before the vehicle is towed (Y page 233). Otherwise, you could lock yourself out of the vehicle when pushing or towing the vehicle.

Installing/removing the towing eye Installing the towing eye X Remove the towing eye from the vehicle

tool kit (Y page 420). G Warning The exhaust tail pipe may be hot. You could burn yourself if you touch the tail pipe. Be particularly careful when removing the rear cover.

The mountings for the removable towing eyes are located in the bumpers. They are at the front and at the rear, under the covers.

432 Towing and tow-starting

X Press the mark on cover : inwards, in the

direction of the arrow.

X Take cover : off the opening. X Screw the towing eye in clockwise to the

stop and tighten it.

Removing the towing eye X Loosen the towing eye and unscrew it. X Attach cover : to the bumper and press

until it engages.

X Place the towing eye in the vehicle tool kit.

Towing the vehicle with the rear axle raised Only possible for vehicles without 4MATIC. When having your vehicle towed with the rear axle raised, observe the important safety notes (Y page 430). ! The ignition must be switched off if you are towing the vehicle with the rear axle raised. Intervention by ESP® could otherwise damage the brake system.

X Switch on the hazard warning flashers

(Y page 248).

X Turn the SmartKey to position 0 in the ignition lock and remove the SmartKey.

X When leaving the vehicle, take the

SmartKey or the KEYLESS-GO key with you.

Towing vehicles with both axles on the ground When having your vehicle towed, observe the important safety notes (Y page 430). G Warning With the engine not running, there is no power assistance for the brake and steering systems. In this case, it is important to keep in mind that a considerably higher degree of effort is necessary to brake and steer the vehicle. Adapt your driving accordingly.

The automatic transmission automatically shifts to position P when you open the driver's or front-passenger door or when you remove the SmartKey from the ignition lock. In order to ensure that the automatic transmission stays in position N when towing, do the following: X Make sure that the vehicle is stationary and

that the SmartKey is in position 0 in the ignition lock.

X Turn the SmartKey to position 2 in the

ignition lock. On vehicles with KEYLESS-GO, use the SmartKey instead of the Start/Stop button (Y page 267).

X Depress and hold the brake pedal. X Shift the automatic transmission to

position N.

X Release the brake pedal. X Release the electric parking brake. X Switch on the hazard warning flashers

X Leave the SmartKey inserted in the ignition

(Y page 248).

lock in position 2.

i When towing with the hazard warning

flashers switched on, use the combination switch as usual to signal in which direction you are changing. In this case, only the indicator lamps for the direction of travel flash. When you reset the combination switch, the hazard warning flashers start flashing again.

Transporting the vehicle The towing eye can be used to pull the vehicle onto a trailer or transporter for transporting purposes. X Turn the SmartKey to position 2 in the

ignition lock.

X Shift the automatic transmission to

position N.

As soon as the vehicle has been loaded: X Prevent the vehicle from rolling away by

applying the electric parking brake. X Shift the automatic transmission to

position P.

X Turn the SmartKey to position 0 in the ignition lock and remove the SmartKey.

X Secure the vehicle. ! Only lash the vehicle down by the wheels or wheel rims, not by parts of the vehicle such as axle or steering components. Otherwise, the vehicle could be damaged.

Fuses Important safety notes The fuses in your vehicle serve to close down faulty circuits. If a fuse blows, all the components on the circuit and their functions will fail. G Warning Only use fuses approved by Mercedes-Benz with the specified amperage for the system in question and do not attempt to repair or bridge a blown fuse. Using other than

Fuses

433

approved fuses or using repaired or bridged fuses may cause an overload leading to a fire, and/or cause damage to electrical components and/or systems. Have the cause determined and remedied by an authorized Mercedes-Benz Center.

Blown fuses must be replaced with fuses of the same rating, which you can recognize by the color and value. The fuse ratings are listed in the fuse allocation chart. An authorized Mercedes-Benz Center will be happy to advise you. i If a fuse has blown, visit a breakdown service or an authorized Mercedes-Benz Center.

If the newly inserted fuse also blows, have the cause traced and rectified at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. ! Only use fuses that have been approved

for Mercedes-Benz vehicles and which have the correct fuse rating for the system concerned. Otherwise, components or systems could be damaged.

Before changing a fuse X Park the vehicle and apply the electric

parking brake.

X Switch off all electrical consumers. X Remove the key from the ignition lock. The fuses are located in various fuse boxes: Rfuse box on the right and left-hand sides of

the dashboard

Rfuse box in the rear Rfuse box in the engine compartment on the left-hand side of the vehicle, when viewed in the direction of travel

Rfuse box in the engine compartment on the right-hand side of the vehicle, when viewed in the direction of travel

The fuse allocation chart is in the vehicle document wallet.

434 Fuses

Dashboard fuse box There is a fuse box located on both the driver's side and the front-passenger side. ! Do not use a pointed object such as a

screwdriver to open the cover in the dashboard. You could damage the dashboard or the cover.

Driver's side illustrated X To open: pull cover : outwards in the

direction of the arrow and remove it.

X To close: clip in cover : on the front of

the dashboard.

X Fold cover : inwards until it engages.

Fuse box in the rear compartment The fuse box is behind the armrest in the rear.

X To open: fold down the armrest. X Pull handle : on the trim behind the rear

seat armrest up in the direction of the arrow.

X Fold down trim ;.

X Loosen cover ? with a suitable object =. X Remove cover ? upwards in the direction

of the arrow.

! The cover must be seated properly,

otherwise moisture or dirt could impair the function of the fuses.

Fuse box in the engine compartment Fuse box on the left-hand side of the vehicle X Open the hood (Y page 404).

X Remove any existing moisture from the

fuse box using a dry cloth.

X AMG vehicles: remove the control unit

above the fuse box.

X To open: loosen screws : with an Allen

key.

X Remove bracket =. X Remove cover ;.

Fuses

435

Engine emergency off If the engine cannot be switched off as described, observe the following procedure: X Take the fuse allocation chart out of the

vehicle document wallet.

X Search for “Emergency engine shutdown”

in the fuse allocation chart.

X Remove the fuses listed under "Emergency

engine shutdown".

X To close: check whether the rubber seal is

lying correctly in cover ;.

X Replace cover ;. X Replace bracket =. X Tighten screws : with an Allen key. ! The cover must be seated properly,

otherwise moisture or dirt could impair the function of the fuses.

X Close the hood (Y page 405).

Fuse box on the right-hand side of the vehicle X Open the hood (Y page 404).

X Remove any existing moisture from the

fuse box using a dry cloth. X To open: open clamps ;. X Remove cover ; upwards. X To close: check whether the rubber seal is

lying correctly in cover ;.

X Replace cover ;. X Fold down cover : and close clamps ;. ! The cover must be seated properly,

otherwise moisture or dirt could impair the function of the fuses.

X Close the hood (Y page 405).

436

Vehicle equipment ............................ 438
Important safety notes .................... 438
Mode .................................................. 438
Winter operation ............................... 440
Tire pressure ..................................... 441
Loading the vehicle .......................... 448
Maximum tire load ............................ 452
Uniform Tire Quality Grading Standards .......................................... 452
Tire labeling ....................................... 453
Term definition for tires and load- ing ...................................................... 457
Changing a wheel ............................. 460
Wheel/tire combinations ................. 461

437

438 Mode

Vehicle equipment

i This manual describes all the standard and optional equipment of your vehicle which was available at the time of purchase. Country-specific differences are possible. Bear in mind that your vehicle may not feature all functions described here. This also refers to safety-related systems and functions.

Important safety notes

Contact an authorized Mercedes-Benz Center if you require information on tested and recommended tires and wheels for summer and winter driving. Advice on purchasing and caring for tires is also available there. 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 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 appears 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 might lose control of the vehicle. Continued driving with a flat tire or driving at high speed with a flat tire will cause excessive heat build- up and possibly a fire.

i Further information about tires and

wheels can be obtained from any authorized Mercedes-Benz Center.

Mode Notes on driving RIf the vehicle is heavily laden, check the tire pressures, and correct them, if necessary. RWhen parking your vehicle, make sure that the tires do not get deformed by the curb or other obstacles. If it is necessary to drive over curbs, speed humps or similar elevations, try to do so slowly and at an obtuse angle. Otherwise, the tires – particularly the sidewalls – can get damaged.

Notes on regularly inspecting wheels and tires 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.

RRegularly check the wheels and tires of

your vehicle for damage (e.g. cuts, punctures, tears, bulges on tires and deformation or severe corrosion on wheels), at least at least once a month, as well as after driving off-road or on rough roads. Damaged wheels can cause a loss of tire pressure.

RRegularly check the tire tread depth and

the condition of the tread across the whole width of the tire (Y page 439). If necessary, turn the front wheels to full lock in order to inspect the inner side of the tire surface.

RAll wheels must have a valve cap to protect the valve against dirt and moisture. Do not install anything onto the valve (such as tire pressure monitoring systems) other than the standard valve cap or other valve caps approved by Mercedes-Benz for your vehicle.

RRegularly check the pressure of all the tires including the emergency spare wheel or the spare wheel, particularly prior to long trips, and correct the pressure as necessary (Y page 441).

Tire tread G Warning Although the applicable federal motor vehicle safety laws consider a tire to be worn when the tread wear 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.

Mode 439

Depending upon the weather and/or road surface (conditions), the tire traction varies widely.

Replace tires before they become excessively worn, as the tire traction on wet road surfaces decreases significantly when the tread depth is less than 1/8 in (3 mm). Tread wear indicators (TWIs) are required by law. Six indicators are positioned over the tire tread. They are visible once the tread depth is approximately 1/16 in (1.6 mm). If this is the case, the tire is so worn that it must be replaced. The recommended tread depth for summer tires is at least 1/8 in (3 mm). The recommended tread depth for winter tires is at least 1/6 in (4 mm).

Bar marking : for tread wear is integrated into the tire tread.

Notes on selecting, mounting and replacing tires ROnly mount tires and wheels of the same

type and make.

ROnly mount tires of the correct size onto

the wheels.

RAfter installing new tires, run them in at moderate speeds for the first 60 miles (100 km) as they only reach their full performance after this distance.

RDo not use tires until they are excessively

worn as the tire traction on wet road

440 Winter operation

surfaces decreases significantly when the tread depth is less than 1/8 in (3 mm). RReplace the tires after six years at the

latest, regardless of wear. This also applies to the emergency spare wheel/spare wheel.

The service life of tires depends, among other things, on the following factors: Rdriving style Rtire pressure Rmileage

Winter operation Points to remember Have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center, at the onset of winter. Observe the notes in the "Changing a wheel" section (Y page 460).

Winter tires Use winter tires at temperatures below 45 ‡ (7 †) and on snow or ice-covered roads. Only winter tires also bearing the i snowflake symbol next to the M+S marking provide the best-possible grip in wintry road conditions. Only these tires will allow the ABS and ESP® driving systems to function optimally in winter, as these tires have been designed specifically for driving on snow. Use M+S tires of the same make and tread on all wheels to maintain safe handling characteristics. G Warning M+S tires with a tread depth of less than 1/6
inch (4 mm) must be replaced. They are no longer suitable for winter operation.

Always observe the maximum permissible speed specified for the M+S tires you have installed.

Once you have installed the winter tires: X Check the tire pressures (Y page 444). X Restart the tire pressure monitor

(Y page 445). G Warning If you use your spare wheel when M+S tires are fitted on the other wheels, be aware that the difference in tire characteristics may very well impair turning stability and that overall driving stability may be reduced. Adapt your driving style accordingly. Have the spare wheel replaced by a regular road wheel with an M+S tire at the nearest authorized Sprinter Dealer.

Snow chains For safety reasons, Mercedes-Benz recommends that you only use snow chains which have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding standard of quality. ! You must drive at raised vehicle level if

snow chains have been mounted. The vehicle could otherwise be damaged. ! There is not enough space for snow

chains on some wheel sizes. Observe the information under "Tires and wheels" in the "Technical Data" section to avoid damage to the vehicle or the wheels.

ROnly use snow chains when driving on an area completely covered by snow. Do not exceed the maximum permissible speed of 30 mph (50 km/h). Remove the snow chains as soon as possible when you are no longer driving on snow-covered roads.

RLocal regulations may restrict the use of snow chains. Applicable regulations must be observed if you wish to mount snow chains.

RSnow chains must not be mounted on

emergency spare wheels.

If you intend to mount snow chains, please bear the following points in mind: Ryou may not attach snow chains to all

wheel-tire combinations; see the "Tires and wheels" section in the "Technical data" chapter.

Rmount snow chains only in pairs and only

on the rear wheels. Observe the manufacturer's installation instructions.

! If snow chains are mounted on the front

wheels, the snow chains could grind against the bodywork or components of the chassis. This could result in damage to the vehicle or the tires.

! Vehicles with steel wheels

If you wish to mount snow chains to steel wheels, make sure that you remove the respective wheels' hubcaps first. The hubcaps may otherwise be damaged.

i You may wish to deactivate

ESP®(Y page 63) when pulling away with snow chains installed. This way you can allow the wheels to spin in a controlled manner, achieving an increased driving force (cutting action).

Tire pressure Tire pressure specifications 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.

Tire pressure 441

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.

You will find a table of recommended tire pressures on the Tire and Loading Information placard on the B-pillar on the driver's side (Y page 448). You will find a table of tire pressures for various operating conditions on the inside of your vehicle's fuel filler flap. Use a suitable pressure gauge. The outer appearance of a tire does not permit any reliable conclusion about the tire pressure. On vehicles equipped with the electronic tire pressure monitor, the tire pressure can be checked using the on-board computer. G Warning Should the tire pressure drop repeatedly: Rcheck the tire for foreign bodies. Rcheck whether the wheel is losing air or the

valve is leaking.

Rmake sure that only a valve cap approved by Mercedes-Benz is installed on the tire valve.

Tire pressures that are too low have a negative effect on vehicle safety, which could lead you to cause an accident.

Only correct tire pressures when the tires are cold. The tires are cold when the vehicle has been parked for at least three hours or driven for less than 1 mile (1.6 km). The tire temperature changes depending on the outside temperature, the vehicle speed and the tire load. If the tire temperature changes by 18 ‡ (10 †), the tire pressure changes by approximately 10 kPa (0.1 bar/1.5 psi). Take this into account when checking the pressure of warm tires and only correct the tire pressure if it is too low for the current

442 Tire pressure

operating conditions. If you check the tire pressure when the tires are warm, the reading will be higher than if the tires were cold. This is normal. Do not reduce the tire pressure to the value specified for cold tires. The tire pressure would otherwise be too low. Observe the recommended tire pressure specifications for cold tires on the Tire and Loading Information placard on the B-pillar on the driver's side. i The specifications given on the following Tire and Loading Information placard are examples. Tire pressure specifications are vehicle-specific and may deviate from the data shown here. The tire pressure specifications for your vehicle can be found on the Tire and Loading Information placard of your vehicle.

You will find recommended tire pressure specifications : for cold tires and for a fully loaded vehicle on the Tire and Loading Information placard. The tire pressure specifications apply to tires which are installed at the factory.

Important notes on tire pressure G Warning If the tire pressure drops repeatedly, check the tires for punctures from foreign objects and/or whether air is leaking from the valves or from around the rim.

The temperature and pressure of the tires increase when the vehicle is in motion. This

is dependent on the driving speed and the load. If you wish to drive at high speeds of 100 mph (160 km/h) or higher when this is allowed, use the tire pressure table on the inside of the fuel filler flap to set the correct tire pressures when the wheels are cold. If the tire pressure is not set correctly, this can lead to an excessive build up of heat and a sudden loss of pressure. For more information, contact a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. i Ride comfort may be affected if the tire pressure is adjusted to the recommended value for speeds of over 100 mph(160 km/h).

Make sure that the tire pressure for normal speeds is adopted again. Additional specifications of tire pressure values for loads can also be found on the tire pressure table on the inside of the fuel filler flap. The tire pressure for emergency spare wheels can be found: Ron the yellow label on the wheel rim of the

emergency spare wheel

Rin the "Wheel and tire combinations"

section (Y page 461) of this Operator's Manual

Ron the Tire and Loading Information placard

on the B-pillar on the driver's side

i The specifications shown in the examples

in the tire pressure tables are only examples. Tire pressure specifications are vehicle-specific and may deviate from the data shown here. The tire pressure specifications that are valid for your vehicle can be found on your vehicle's tire pressure table.

The tire pressures in the tire pressure table on the inside of the fuel filler flap are valid for all approved tires installed at the factory, unless stated otherwise.

Tire pressure 443

Tire pressure table for all approved tires installed at the factory (example) If the tire pressure precedes a tire size, the tire pressure specification is only valid for this tire size. The vehicle loading conditions "partially laden" or "fully laden" are specified using a differing number of persons and luggage in the table. The actual number of seats may differ from this.

Tire pressure table with tire sizes (example) Some tire pressure tables only show the rim diameter instead of the complete tire size, e.g. R18. The rim diameter is a component of the tire size and can be read from the tire sidewall (Y page 454).

Tire pressure too low or too high 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: Rwear excessively and/or unevenly Radversely affect fuel economy Rfail from being overheated Radversely affect handling

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 Rwear excessively and/or unevenly Rbe more likely to become damaged

444 Tire pressure

Radversely affect ride comfort Rincrease stopping distance

Maximum tire pressure G Warning Never exceed the maximum tire inflation pressure. 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.

: Maximum permitted tire pressure

(example)

i The actual values for tires are specific to

each vehicle and may deviate from the values in the illustration.

When adjusting the tire pressures always observe the recommended tire pressure for your vehicle (Y page 441).

Checking tire pressures Important 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 pressure at least once a month. Only check and correct tire pressures when the tires are cold (Y page 441).

Checking the tire pressures manually In order to determine and adjust the tire pressures, proceed as follows: X Remove the valve cap of the tire you wish

to check.

X Press the tire pressure gauge securely onto

the valve.

X Read the tire pressure and compare it with

the recommended value on the Tire and Loading Information placard on the B-pillar on the driver's side of your vehicle. X If necessary, increase the tire pressure to

the recommended value (Y page 441).

X If the tire pressure is too high, release air by pressing down the metal pin in the valve using the tip of a pen, for example. Then,

check the tire pressure again using the tire pressure gauge.

X Screw the valve cap onto the valve. X Repeat the steps for the other tires.

Tire pressure monitor Important safety notes If a tire pressure monitor is installed, the vehicle's wheels have sensors installed that monitor the tire pressures in all four tires. The tire pressure monitor warns you when the pressure drops in one or more of the tires. The tire pressure monitor only functions if the correct wheel electronics units are installed in all wheels. The tire pressure monitor has a yellow warning lamp in the instrument cluster for indicating pressure loss/malfunctions (USA) or pressure loss (Canada). Depending on how the warning lamp flashes or lights up, a tire pressure that is too low or a malfunction in the tire pressure monitor is displayed: Rif the warning lamp is lit continuously, the

tire pressure on one or more tires is significantly too low. The tire pressure monitor is not malfunctioning.

RUSA only: if the warning lamp flashes for

60 seconds and then remains lit constantly, the tire pressure monitor is malfunctioning. G Warning Each tire, including the spare (if provided), should be checked at least once a month 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 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 the tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.

Tire pressure 445

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. USA only: Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the tire pressure monitoring 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 one 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 lit, 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 USA only:

446 Tire pressure

If the tire pressure monitor is malfunctioning, it may take more than 10 minutes for the tire pressure warning lamp to inform you of the malfunction by flashing for 60 seconds and then remaining lit. When the malfunction has been rectified, the tire pressure warning lamp goes out after driving for a few minutes.

Information on tire pressures is displayed in the multifunction display. After a few minutes of driving, the current tire pressure of each tire is shown in the multifunction display. i The tire pressure values indicated by the on-board computer may differ from those measured at a gas station with a pressure gauge. The tire pressures shown by the on- board computer refer to those measured at sea level. At high altitudes, the tire pressure values indicated by a pressure gauge are higher than those shown by the on-board computer. In this case, do not reduce the tire pressures.

i The operation of the tire pressure monitor can be affected by interference from radio transmitting equipment (e.g. radio headphones, two-way radios) that may be operated in or near the vehicle.

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 interference, and 2. This device must withstand any interference received, including interference that may cause undesired operation. Unauthorized modifications to the device could void the user’s authority to operate the equipment. i Canada only:

This device complies with the RSS-210
Rules from Industry Canada. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. Unauthorized modifications to the device could void the user’s authority to operate the equipment.

Checking tire pressure electronically X Make sure that the SmartKey is in

position 2 (Y page 267) in the ignition lock. X Press the = or ; button to select the Service menu. X Press the 9 or : button to select Tire Pressure. X Press the a button.

The current tire pressure for each wheel will be displayed in the multifunction display. If the vehicle has been parked for longer than 20 minutes, the Tire Pressures Displayed After Driving A Few Minutes message appears in the display. After a teach-in period, the tire pressure monitor automatically recognizes new wheels or new sensors. As long as a clear allocation of the tire pressure values to the individual wheels is not possible, the Tire Pressure Monitor Active message is shown instead of the tire pressure display. The tire pressures are already being monitored. i If a spare wheel/emergency spare wheel

is mounted, the system may continue to show the tire pressure of the wheel that has been removed for a few minutes. If this occurs, note that the value displayed for the position where the spare wheel is mounted is not the same as the spare wheel/emergency spare wheel's current tire pressure.

TPMS warning messages If the tire pressure monitor detects a significant pressure loss on one or more tires, a warning message is shown in the multifunction display. A warning tone also sounds and the tire pressure warning lamp lights up in the instrument cluster. For each tire that is affected by a significant loss of pressure, the tire pressure is shown in yellow. If the Correct Tire Pressure message appears in the multifunction display: X Check the tire pressure on all four wheels

and correct it if necessary.

i If the wheel positions on the vehicle are interchanged, the tire pressures may be displayed for the wrong positions for a short time. This is rectified after a few minutes of driving, and the tire pressures are displayed for the correct positions.

Restarting the tire pressure monitor G Warning It is the driver's responsibility to set the tire inflation pressure 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 tire pressure monitor, all existing warning messages are deleted and the warning lamps go out. The monitor uses the currently set tire pressures as the reference values for monitoring. The TPMS must be restarted when you set the tire pressure to a new value (as a result of changed handling or load characteristics, for example). The TPMS then monitors the new tire pressure values. i Canada only: in most cases, the tire pressure monitor recognizes the new reference values automatically. However, you can also define reference values manually as described here.

Tire pressure 447

Restart the tire pressure monitor after you have set the tire pressure to the value recommended for the desired driving situation (Y page 441). Only correct tire pressures on cold tires. Comply with the recommended tire pressures on the Tire and Loading Information placard on the B-pillar on the driver's side Additional tire pressure values for driving at high speeds or with heavy loads can be found in the Tire Pressure table on the inside of the fuel filler flap. X Make sure that the tire pressure is correct

on all four wheels.

X Make sure that the SmartKey is in position

2 in the ignition lock. X Press the = or ; button to select the Service menu. X Press the 9 or : button to select Tire Pressure. X Press the a button. The current tire pressure of each wheel or the Tire Pressures Displayed After Driving A Few Minutes message is shown in the multifunction display. X Press the : button. The Use Current Pressures as New Reference Values message appears in the multifunction display.

If you wish to confirm the restart: X Press the a button. The Tire Pressure Monitor Restarted message appears in the multifunction display. After driving for a few minutes, the system checks whether the current tire pressures are within the specified range. The new tire pressures are then accepted as reference values and monitored.

If you wish to cancel the restart: X Press the % button.

The tire pressure values stored at the last restart will continue to be monitored.

448 Loading the vehicle

Loading the vehicle Instruction labels for tires and loads 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.

Two instruction labels on your vehicle show the maximum possible load. (1) The Tire and Loading Information placard is on the B-pillar on the driver's side. The Tire and Loading Information placard shows the maximum possible number of occupants and the maximum possible vehicle load. It also contains details of the tire sizes and corresponding pressures for tires mounted at the factory.

(2) The vehicle identification plate is on the B-pillar on the driver's side. The vehicle identification plate informs you of the gross vehicle weight rating. It is made up of the vehicle weight, all vehicle occupants, the fuel and the cargo. You can also find information about the maximum gross axle weight rating of the front and rear axle. The maximum gross axle weight rating is the maximum weight that can be carried by one axle (front or rear axle). Never exceed the maximum load or the maximum gross axle weight rating for the front or rear axle.

: B-pillar, driver's side

Maximum permissible gross vehicle weight rating i The details on the Tire and Loading

Information placard illustration are only an example. The maximum permissible gross vehicle weight rating is vehicle-specific and may differ from that which is illustrated. You can find the valid maximum permissible gross vehicle weight rating for your vehicle on the Tire and Loading Information placard.

X The Tire and Loading Information placard gives you details on maximum permissible gross vehicle weight rating :: "The gross weight of occupants and luggage must never exceed XXX kilograms or XXX pounds."

The gross weight of all vehicle occupants, cargo, luggage and trailer load/noseweight (if applicable) must not exceed the specified value.

Number of seats i The details on the Tire and Loading

Information placard illustration are only an example. The number of seats is vehicle- specific and can differ from the details shown. The number of seats in your vehicle can be found on the Tire and Loading Information placard.

Maximum number of seats : determines the maximum number of occupants allowed to travel in the vehicle. This information can be found on the Tire and Loading Information placard.

Loading the vehicle 449

450 Loading the vehicle

Determining the maximum load 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 traveling

X Step 3: Subtract the combined weight of the driver and passengers from XXX kilograms or

in your vehicle.

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 lb 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. For reasons of safety, that weight must not exceed the available cargo and luggage cargo capacity calculated in step 4.

X Step 6 (if applicable): If you intend to tow a trailer behind your vehicle, the load on the

trailer is transferred to your vehicle. Consult this Operator's Manual to determine how this reduces the available cargo and luggage load capacity of your vehicle (Y page 452).

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 cargo limit of 1,500 lbs (680 kg). This is for illustration purposes only. Make sure you always use the actual load limit for your vehicle stated on the vehicle's Tire and Loading Information placard (Y page 449).

Step 1

Step 2

Combined maximum weight of occupants and cargo (data from the Tire and Loading Information placard)

Number of people in the vehicle (driver and occupants) Distribution of the occupants

Example 1
1500 lbs (680 kg)

Example 2
1500 lbs (680 kg)

Example 3
1500 lbs (680 kg)

Example 1

Example 2

Example 3

Front: 2
Rear: 3

Front: 1
Rear: 2

Front: 1

Loading the vehicle 451

Example 3
Occupant 1: 150 lbs (68 kg)

Example 2
Occupant 1: 200 lbs (91 kg) Occupant 2: 190 lbs (86 kg) Occupant 3: 150 lbs (68 kg)

Example 1
Occupant 1: 150 lbs (68 kg) Occupant 2: 180 lbs (82 kg) Occupant 3: 160 lbs (73 kg) Occupant 4: 140 lbs (63 kg) Occupant 5: 120 lbs (54 kg) 750 lbs (340 kg) 540 lbs (245 kg) 150 lbs (68 kg)

Example 1
1500 lbs (680 kg) - 750 lbs (340 kg) = 750 lbs (340 kg)

Example 2
1500 lbs (680 kg) - 540 lbs (245 kg) = 960 lbs (435 kg)

Example 3
1500 lbs (680 kg) - 150 lbs (68 kg) = 1350 lbs (612 kg)

Weight of the occupants

Step 3

Gross weight of all occupants

Permissible cargo and trailer load/ noseweight (maximum gross vehicle weight rating from the Tire and Loading Information placard minus the gross weight of all occupants)

The greater the combined weight of the occupants, the lower the maximum luggage load. Further information can be found under "Towing a trailer" (Y page 452).

Vehicle identification plate Even if you have calculated the total cargo carefully, you should still make sure that the gross vehicle weight rating and the gross axle weight rating are not exceeded. Details can be found on the vehicle identification plate on the B-pillar on the driver's side (Y page 448). Gross vehicle weight: the gross weight of the vehicle, all passengers, cargo and trailer load/noseweight (if applicable) must not exceed the permissible gross vehicle weight.

Gross axle weight rating: the maximum permissible load that can be carried by one axle (front or rear axle). To ensure that your vehicle does not exceed the maximum permissible values (gross vehicle weight and maximum gross axle weight rating), have your loaded vehicle (including driver, occupants, cargo, and full trailer load if applicable) weighed on a suitable vehicle weighbridge.

452 Uniform Tire Quality Grading Standards

Trailer load/noseweight The trailer load/noseweight affects the gross weight of the vehicle. If a trailer is attached, the trailer load/noseweight is included in the load along with occupants and luggage. The trailer load/noseweight is usually approximately 10% of the gross weight of the trailer and its cargo. Your Mercedes-Benz is designed for transporting persons and their luggage. Mercedes-Benz does not recommend towing a trailer with your vehicle.

Maximum tire load

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.

i The actual values for tires are specific to

each vehicle and may deviate from the values in the illustration.

Maximum tire load : is the maximum permitted weight for which the tire is approved. Further information on tire loads (Y page 453).

Uniform Tire Quality Grading Standards Overview of tire quality standards

The Uniform Tire Quality Grading Standards are U.S. government specifications. Their purpose is to provide drivers with uniform reliable information on tire performance data. Tire manufacturers have to grade tires using three performance factors: tread wear :, tire traction ; and heat resistance =. All tires sold in North America are provided with the corresponding quality class mark on the sidewall of the tire, even though these regulations do not apply to Canada. i The actual values for tires are specific to

each vehicle and may deviate from the values in the illustration.

Where applicable, the tire grading information can be found on the tire sidewall between the tread shoulder and maximum tire width. For example: Tread wear Traction 200

Temperature

AA

All passenger car tires must conform to the statutory safety requirements in addition to these grades.

Tread wear The tread wear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified U.S. government test track. For example, a tire graded 150 would wear one and one-half times as well on the government test track as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate conditions.

Traction G Warning The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration, cornering, hydroplaning, or peak traction characteristics.

The traction grades, from highest to lowest, are AA, A, B, and C. These grades represent the tire's ability to stop on a wet surface as measured under controlled conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance. G Warning If ice has formed on the road, tire traction will be substantially reduced. Under such weather conditions, drive, steer and brake with extreme caution.

The safe speed on a wet, snow covered or icy road is always lower than on dry road surfaces.