2010 Mercedes-benz CLS Class Owners Manual

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 Rthe vehicle must be parked on level ground Rwith the engine at operating temperature, the vehicle must have been stationary for

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179

at least 5 minutes with the engine turned off

Rwith the engine not at operating

temperature, the vehicle must have been stationary for at least 30 minutes with the engine turned off

Checking engine oil level X Open the hood (Y page 178).

X Pull out oil dipstick :. X Wipe oil dipstick : clean. X Slowly insert oil dipstick : fully into the

dipstick guide tube.

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

i CLS 550:

The filling quantity between the upper and lower marks on the oil dipstick is approximately 2.1 US qt. (2.0 l).

i CLS 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 296).

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180 Engine compartment

For information on messages in the multifunction display concerning engine oil, see the “Practical hints” section (Y page 246).

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). The following will result in engine or emission control system damage not covered by the Mercedes-Benz Limited Warranty: RUsing engine oils and oil filters of

specification other than those expressly required for the Maintenance System. RChanging of oil and oil filter at change

intervals longer than those called for by the Maintenance System.

RUsing any oil additives.

CLS 550

CLS 63 AMG X Unscrew filler cap : 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 : back on filler neck. For more information on engine oil, see the “Technical data” section (Y page 296) and (Y page 298).

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†).

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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 the cap on the coolant

expansion tank if the coolant temperature is above 158‡ (70†). Allow the engine to cool down before removing the cap. The coolant expansion tank contains hot fluid and is under pressure.

RUsing a rag, slowly open the cap

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

X Using a rag, slowly open cap :

approximately 1/2 turn counterclockwise to relieve excess pressure.

X Continue turning cap : counterclockwise

and remove it.

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181

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

= in coolant expansion tank ;

Rfor warm coolant: is approximately 0.6 in

(1.5 cm) higher

X Add coolant as required. X Screw cap : back on and tighten it. For more information on coolant, see the “Technical data” section (Y page 297) and (Y page 300).

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.

! 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 deionized water in the washer fluid reservoir. Otherwise, the washer fluid level sensor could be damaged.

Fluid for the washer system and the headlamp cleaning system is supplied from the washer fluid reservoir. During all seasons, use MB Windshield Washer Concentrate “MB SummerFit”. Mix it with water or premixed washer solvent/ antifreeze depending on the ambient temperature (Y page 302).

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182 Tires and wheels

X Opening washer fluid reservoir: Pull tab

of cap : upwards.

X Refill the washer fluid reservoir. X Closing washer fluid reservoir: Press cap : onto filler hole until it engages.

For more information, see “Washer system and headlamp cleaning system” (Y page 297).

Brake fluid level ! If you find that the brake fluid in the brake

fluid reservoir has fallen to the minimum mark or below, have the brake system checked for brake pad thickness and leaks immediately. Contact an authorized Mercedes-Benz Center immediately. Do not add brake fluid as this will not solve the problem. For more information, see “Practical hints”.

When checking the brake fluid level, the vehicle must be parked on level ground.

The brake fluid level is correct when it is between lower mark (MIN) ; and upper mark (MAX) : of the brake fluid reservoir.

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 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

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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 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 the 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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183

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 193). The tire inflation pressure should be checked regularly. Only adjust the tire inflation pressure 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). Depending on the ambient temperature, the driving speed and the tire load, the tire temperature changes. When the tire temperature changes by 18‡ (10†), the tire inflation pressure will change by approximately 1.5 psi (0.1 bar). Keep this in mind when checking tire inflation pressure on warm tires and adjust the tire pressure only if the tire inflation pressure is too low for the current operating conditions. If you check the tire inflation pressure when the tires are warm, the reading will be higher than the cold reading. This is normal. Do not let air out to match the specified cold tire inflation

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184 Tires and wheels

pressure. Otherwise, the tire will be underinflated. 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 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 184). 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.

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 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 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 you are not sure about the proper tire inflation, contact an authorized Mercedes- Benz Center. 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. Supplemental tire inflation pressure information for different loading conditions of the vehicle can be found on the tire inflation pressure label. The tire inflation pressure label is located on the inside of the fuel filler flap. For the tire inflation pressure for spare wheels such as Minispare wheels or spare wheels with collapsible tire refer to Rthe yellow label on the spare wheel rim Rthe “Technical data” section of this

Operator’s Manual (Y page 296)

Rthe Tire and Loading Information placard on

the driver’s door B-pillar

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Unless specified otherwise, the tire inflation pressures on the tire inflation pressure label are valid for all approved, factory-equipped tires. When a tire size is specified, the tire inflation pressure that follows applies to that particular tire size only. i Data shown on tire inflation pressure

label examples are for illustration purposes only. Tire inflation pressure data are specific to each vehicle and may vary from data shown in the following illustrations. Refer to the tire inflation pressure label on vehicle for actual data specific to your vehicle.

Example illustration: Tire inflation pressures for all approved, factory equipped tires Some tire inflation pressure labels may only show the rim diameter instead of the entire tire size, e.g. R 18 or 18". The rim diameter is part of the tire size as specified on the tire sidewall (Y page 202).

Example illustration: Tire inflation pressures specific to rim diameter

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185

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.

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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 once a month. Check and adjust the tire inflation pressure when the tires are cold (Y page 183).

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 193). If necessary, add air to achieve the recommended tire inflation pressure.

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.

Tire pressure loss warning system (Canada only) While the vehicle is being driven, the tire pressure loss warning system 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 tire pressure loss warning system 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 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)

Rwhen you are driving with a loaded roof

rack or heavily laden vehicle G Warning! When the multifunction display shows the message Tire Pressure Check Tires, one or more of your tires are 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 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.

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Each tire, including the spare, should be checked at least once a month when cold. Inflate the tires to the recommended tire inflation pressure as specified on Rthe Tire and Loading Information placard on

the driver’s door B-pillar or

Rthe 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 Rthe Tire and Loading Information placard

located on the driver’s door B-pillar (Y page 193)

Rthe tire inflation pressure label on the

inside of the fuel filler flap

The tire inflation pressures are not listed in the Operator’s Manual. G Warning! The tire pressure loss warning system 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 on the tire inflation pressure label located on the inside of the fuel filler flap. The tire pressure loss warning system 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 tire pressure loss warning system. The tire pressure loss warning system 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.

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187

Restarting the tire pressure loss warning system The tire pressure loss warning system 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 tire pressure loss warning system 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 112).

X Press button * or & 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 109).

The following message will appear in the multifunction display: Restart Run Flat Indicator? X If you wish to confirm: Press button

W. The following message will appear in the multifunction display: Run Flat Indicator Restarted

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After a certain “learning phase”, the tire pressure loss warning system checks the set pressure values for all four tires.

X If you wish to cancel: Press button X.

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 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 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.

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. 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

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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. In addition, an acoustic warning sounds and the low tire pressure telltale in the instrument cluster comes on.

Example illustration Restarting the TPMS 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 TPMS, the system sets new reference values for each tire. 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 inflation 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 inflation 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 193) or, if available, the supplemental tire inflation pressure information on the inside of the fuel filler flap, make sure the tire inflation pressure of all four tires is correct.

X Switch on the ignition.

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X Press button V or U on the

multifunction steering wheel repeatedly until the standard display appears in the multifunction display (Y page 112). X Press button & or * 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 109). The following message appears in the multifunction display: Restart tire pressure monitor? X If you wish to confirm: Press button

W. 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 X.

Advanced Tire Pressure Monitoring System (Advanced TPMS), (Canada only) Your vehicle is equipped with the Advanced Tire Pressure Monitoring System (Advanced TPMS). It measures the tire inflation pressure in the vehicle’s tires and issues warnings in case of pressure loss in one or more of the tires. The TPMS only functions on wheels that are equipped with the proper electronic sensors.

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

2.

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

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

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tires are significantly underinflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible. 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. Tire pressure inquiries are made using the multifunction display. The current tire inflation pressure for each tire appears in the multifunction display after a few minutes of driving. i Possible differences between the

readings of a tire pressure gauge of an air hose, e.g. gas station equipment, and the vehicle’s control system can occur. The tire pressure displayed by the control system apply to sea level. In high-altitude locations, the reading on a tire pressure gauge will be higher than the reading issued by the vehicle’s control system. Do not reduce the tire inflation pressure under such circumstances.

X Switch on the ignition. X Press button V or U on the

multifunction steering wheel repeatedly until the standard display appears in the multifunction display (Y page 112).

X Press button & or * until the current inflation pressure for each tire appears in the multifunction display.

Example illustration When the vehicle has been parked for longer than 20 minutes, the message Tire pressure is only displayed after driving for a few minutes appears in the multifunction display. i With a spare wheel mounted, the system may still indicate the tire inflation pressure of the removed road wheel for some minutes. If this happens, keep in mind that the indicated value where the spare wheel is mounted does not reflect the actual spare tire inflation pressure.

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

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. In addition, an acoustic warning sounds and the low tire pressure telltale in the instrument cluster comes on.

Example illustration The respective tire is indicated by a red rectangle.

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Restarting Advanced TPMS 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 TPMS, the system sets new reference values for each tire. 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 inflation 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 inflation 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. Canada only: The TPMS usually recognizes tire pressure adjustments and sets new reference values automatically. You can, however, restart the TPMS manually as described. X Using the Tire and Loading Information

placard on the driver’s door B-pillar (Y page 193) or the supplemental tire inflation pressure information on the inside of the fuel filler flap, make sure the tire inflation pressure of all four tires is correct.

X Switch on the ignition. X Press button V or U on the

multifunction steering wheel repeatedly until the standard display appears in the multifunction display (Y page 112).

X Press button & or * repeatedly until you see the current inflation pressures for each tire appear in the display or the following message appears in the multifunction display: Tire pressure is only displayed after driving for a few minutes X Press the reset button (Y page 108).

The following message will appear in the multifunction display: Restart tire pressure monitor? X If you wish to confirm: Press button

W. The following message will appear 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 X. i When the wheel positions have been changed, the inflation pressure of a tire may be displayed for the wrong position temporarily. After driving for a few minutes, the inflation pressure will be shown for the correct position.

Maximum tire inflation 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

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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.

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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.

i For illustration purposes only. Actual data

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

This is the maximum permissible tire inflation pressure : for the tire. Always follow the recommended tire inflation pressure (Y page 183) for proper tire inflation.

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

: 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.

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.

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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.

The Tire and Loading Information placard showing load limit information : is located on the driver’s door B-pillar (Y page 193). 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 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.

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 seating capacity : is located on the driver’s door B-pillar (Y page 193).

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.

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).

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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 197).

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 you are using the actual load limit for your vehicle stated on the vehicle’s Tire and Loading Information placard (Y page 194).

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Step 1 Combined weight limit of occupants and cargo from Tire and Loading Information placard

Step 2 Number of occupants (driver and passengers) Seating configuration

Occupants weight

Combined weight of all occupants

Step 3 Available cargo/

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

Example 1
1 500 lbs

Example 2
1 500 lbs

Example 3
1 500 lbs

Example 1

Example 2

Example 3

front: 2
rear: 3
Occupant 1: 150 lbs Occupant 2: 180 lbs Occupant 3: 160 lbs Occupant 4: 140 lbs Occupant 5: 120 lbs 750 lbs

front: 1

Occupant 1: 150 lbs

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

540 lbs

150 lbs

Example 1
1 500 lbs - 750 lbs = 750 lbs

Example 2
1 500 lbs - 540 lbs = 960 lbs

Example 3
1 500 lbs - 150 lbs = 1 350 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 197).

Certification label Even after careful determination of the combined weight of all occupants, cargo and the trailer tongue load (if applicable) (Y page 197) as to not exceed the permissible load limit, you must make sure your vehicle never exceeds the Gross Vehicle

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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 288). Gross Vehicle Weight Rating (GVWR): The total weight of the vehicle, all occupants, all cargo, and the trailer tongue load (if applicable) 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 10% of the trailer weight and everything loaded in it. Your Mercedes-Benz has been designed primarily to carry passengers and their cargo. Mercedes-Benz does not recommend trailer towing 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

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197

in handling or steering problems, or brake failure.

i For illustration purposes only. Actual data

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

The maximum tire load rating : is the maximum weight the tires are designed to support. For more information on tire load rating, see (Y page 202). For information on calculating total and cargo load capacities, see (Y page 194).

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 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.

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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 tire pressure loss warning system (Y page 186), the TPMS (Y page 188), or the Advanced TPMS (Y page 190). For information on driving in case of pressure loss in one or more tires (emergency mode), see the “Practical Hints” section (Y page 277).

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 once a month. For more information on checking tire inflation pressure, see “Recommended tire inflation pressure” (Y page 183).

Tire inspection Every time you check the tire inflation pressure, you should also inspect your tires for the following: Rexcessive treadwear (Y page 198) Rcord or fabric showing through the tire’s

rubber

Rbumps, bulges, cuts, cracks or splits in the

tread or side of the tire

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).

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based on three performance factors: treadwear :, traction ;, and temperature resistance =. Although not a Government of Canada requirement, all tires made for sale in North America have these grades branded on the sidewall. i For illustration purposes only. Actual data

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

Quality grades can be found, where applicable, on the tire sidewall between tread shoulder and maximum section width. For example: Treadwear 200

Temperature

Traction AA

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

Treadwear The treadwear 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 course. For example, a tire graded 150 would wear one and one-half (1 1/2) times as well on the government course 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.

Traction G Warning! The traction grade assigned to this tire is based on straight-ahead braking traction tests, and does not include acceleration,

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.

Uniform Tire Quality Grading Standards

The Uniform Tire Quality Grading is a U.S. Government requirement designed to give drivers consistent and reliable information regarding tire performance. Tire manufacturers are required to grade tires

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cornering, hydroplaning, or peak traction characteristics. The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire’s ability to stop on wet pavement 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 a dry road. You should pay particular attention to the condition of the road whenever the outside temperature is close to the freezing point. Mercedes-Benz recommends winter tires (Y page 208) with a minimum tread depth of approximately 1/6 in (4 mm) on all four wheels for the winter season to ensure normal balanced handling characteristics. On packed snow, they can reduce your stopping distance compared to summer tires. Stopping distance, however, is still considerably greater than when the road is not covered with snow or ice. Exercise appropriate caution. ! Avoid spinning of a drive wheel. This may

cause serious damage to the drivetrain which is not covered by the Mercedes-Benz Limited Warranty.

Temperature G Warning! The temperature grade for this tire is established for a tire that is properly inflated and not overloaded. Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause

excessive heat build-up and possible tire failure. The temperature grades are A (the highest), B, and C, representing the tire’s resistance to the generation of heat and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel. Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of performance on the laboratory test wheel than the minimum required by law.

Rotating tires G Warning! Rotate front and rear wheels only if the tires are of the same dimension. If your vehicle is equipped with mixed-size tires (different tire dimensions front vs. rear), tire rotation is not possible. G Warning! Have the tightening torque checked after changing a wheel. Wheels could become loose if not tightened with a torque of 96 lb-ft (130 Nm). Only use genuine Mercedes-Benz wheel bolts specified for your vehicle’s rims. Tire rotation can be performed on vehicles with tires of the same dimension all around. If your vehicle is equipped with tires of the same dimension all around, tires can be rotated, observing a front-to-rear rotation pattern that will maintain the intended rotation (spinning) direction of the tire (Y page 197). In some cases, such as when your vehicle is equipped with mixed-size tires (different tire

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dimension front vs. rear), tire rotation is not possible. If applicable to your vehicle’s tire configuration, tires can be rotated according to the tire manufacturer’s recommended intervals in the tire manufacturer’s warranty pamphlet located in your vehicle literature portfolio. If none is available, tires should be rotated every 3 000 to 6 000 miles (5 000 to 10 000 km), or sooner if necessary, according to the degree of tire wear. The same rotation (spinning) direction must be maintained. Rotate tires before the characteristic tire wear pattern becomes visible (shoulder wear on front tires and tread center wear on rear tires). Thoroughly clean the mounting face of wheels and brake disks, i.e. the inner side of the wheels/tires, during each rotation. Check for and ensure proper tire inflation pressure. For information on wheel change, see “Flat tire” (Y page 271).

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:

: Uniform Tire Quality Grading Standards

; DOT, Tire Identification Number

(Y page 199)

(Y page 204)

= Maximum tire load (Y page 197) ? Maximum tire inflation pressure

(Y page 192) A Manufacturer B Tire ply material (Y page 205) C Tire size designation, load and speed

rating (Y page 202)

D Load identification (Y page 204) E 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 291).

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Tire size designation, load and speed rating

: Tire width ; Aspect ratio in % = Radial tire code ? Rim diameter A Load index B Speed symbol

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

Aspect ratio Aspect ratio ; 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 = 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 203). Rim diameter Rim diameter ? is the diameter of the bead seat, not the diameter of the rim edge. The rim diameter is indicated in inches (in). Load index 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. Load index A is a numerical code associated with the maximum load a tire can support.

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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 197) where the maximum load associated with the load index is indicated in kilograms and lbs. For additional information on the load index, see “Load identification” (Y page 204). Speed symbol 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. Speed symbol B indicates the approved maximum speed (tire speed rating) for the tire. Summer tires Index ZR...Y

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) up to 186 mph (300 km/h)

11 or M+Sifor winter tires

Index ZR...(..Y) ZR

Speed rating above 186 mph (300 km/h) 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 load index A and speed symbol B. 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 symbol 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.

All-season and winter tires Index