2011 Mercedes-benz R Class Owners Manual

X Only use jumper cables which 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 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 Apply the parking brake firmly.

41 Only vehicles with a gasoline engine. 42 Only vehicles with a gasoline engine.

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Jump-starting

X Shift the transmission to position P. X Switch off all electrical consumers (e.g. radio, blower etc.). X Open the hood (Y page 278).

Position number C identifies the charged battery of the other vehicle or an equivalent jump- starting device. ! Never swap the terminal connections. X Lift up cover : of positive terminal ; in the direction of the arrow. X Connect positive terminal ; on your vehicle to positive terminal = of donor battery C

using the jumper cable, beginning with your own battery.

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

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

X Start the engine. X First remove the jumper cable from earth point B 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.

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Towing away Important safety guidelines 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.

If possible, have the vehicle transported by a suitable vehicle with both axles raised, instead of having it towed. If it is not possible to load the vehicle due to external conditions, tow the vehicle with both axles on the ground the shortest distance possible to a place where it is possible to load the vehicle. ! When towing, pull away slowly and

smoothly. If the tractive power is too high, the vehicles 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. ! You must not start the vehicle by tow-

starting. This could otherwise damage the automatic transmission.

Towing away

313

The battery must be connected and charged when towing. Otherwise, you cannot switch on the ignition and select N with the automatic transmission. i Switch the automatic door lock off before towing (Y page 208). Otherwise, you could lock yourself out of the vehicle when pushing or towing the vehicle.

Installing the towing eye Vehicles with a trailer tow hitch: if possible, fasten the towing mechanism to the trailer tow hitch (Y page 193). X Remove the towing eye and the lug wrench

(if supplied) from the vehicle tool kit (Y page 294). G Warning In order to avoid possible serious burns or injury, use extreme caution when removing the rear cover, because the rear exhaust pipe is extremely hot.

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

! Do not tow with sling-type equipment.

This could damage the vehicle.

! Only secure the tow rope or tow bar at the

towing eyes, or the trailer tow hitch, if available. You could otherwise damage the vehicle.

! 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.

! The vehicle must not be towed with raised

front or rear axles. This could otherwise damage the transmission.

X Press the mark on cover : inwards, in the

direction of the arrow.

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

stop.

X Insert the lug wrench handle into the

towing eye and tighten it.

or X If your vehicle is not equipped with a lug

wrench, use a suitable object to tighten the towing eye.

Removing the towing eye X Remove the lug wrench (if supplied) from

the vehicle tool kit (Y page 294).

X Insert the lug wrench handle into the towing eye and turn the towing eye counter-clockwise.

or X If your vehicle is not equipped with a lug

wrench, use a suitable object to loosen the towing eye.

X Unscrew the towing eye. X Attach cover : to the bumper and press

until it engages.

X Return the towing eye and the lug wrench

to the vehicle tool kit.

Towing the vehicle G Warning! If circumstances require towing the vehicle with all wheels on the ground, always tow with a tow bar if: Rthe engine will not run Rthere is a malfunction in the brake system Rthere is a malfunction in the power supply

or in the vehicle's electrical system

This is necessary to adequately control the towed vehicle. Prior to towing the vehicle with all wheels on the ground, make sure the SmartKey is in starter switch position 2.

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 switches automatically to position P if the driver's door or front-passenger door are opened or the key is removed 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

the ignition is switched off.

X Turn the key to position 2 in the ignition

lock. On vehicles with KEYLESS-GO, make sure you use the key and not the Start/Stop button (Y page 149).

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

position N.

X Release the brake pedal. X Release the parking brake. X Activate the hazard warning signal

(Y page 119).

X Leave the ignition switched on. ! 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.

i When towing with the hazard warning lamp switched on, use the combination switch as normal to show changes to the direction of the vehicle. In this case, only the indicator lamps for the direction of travel flash. After resetting the combination switch, the hazard warning lamp starts flashing again.

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Recovering a vehicle that has become stuck Take great care when recovering a vehicle whose drive wheels have become embedded in loose earth or mud, particularly if the vehicle is laden. When recovering the vehicle, do not use jerky movements and do not pull it at an angle. The chassis could otherwise be damaged. Never attempt to recover a vehicle with a trailer attached. Pull out the vehicle backwards, if possible using the tracks it made when it became stuck.

Transporting the vehicle The towing eyes or trailer tow hitch can be used to pull the vehicle onto a trailer or transporter if you wish to transport it. X Turn the SmartKey to position 2
(Y page 149) 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 parking brake.

X Shift the automatic transmission to

position P.

X Switch off the ignition. 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 guidelines The fuses in your vehicle serve to close down faulty circuits. If a fuse blows, all the

Fuses

315

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 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 parking

brake.

X Switch off all electrical consumers. X Remove the key from the ignition lock.

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316 Fuses

The fuses are located in various fuse boxes: Rfuse box on the front-passenger side of the

dashboard

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

Rfuse box in the stowage well under the

trunk floor

The fuse allocation chart is located in the vehicle tool kit (Y page 294) in the stowage compartment under the trunk floor.

Fuse box in the cockpit ! 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.

X To open: pull cover : upwards in the direction of the arrow and remove it.

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

dashboard.

X Fold cover : inwards until it engages.

Fuse box in the engine compartment X Open the hood (Y page 278).

X Remove any existing moisture from the

fuse box using a dry cloth. X To open: open clamp :. X Fold up cover ; and remove it. X To close: check whether the rubber seal is

lying correctly in cover ;.

X Insert cover ; at the front of the fuse box

into the retainer.

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

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

X Close the hood (Y page 279).

Fuse box in the cargo compartment X Open the tailgate.

X To open: open the trunk floor and secure

X Fold cover : to the left in the direction of

it (Y page 294).

the arrow.

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317

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 tool kit (Y page 294).

X Open the fuse box in the engine

compartment (Y page 316).

X Remove fuse 120. The installation location

of the fuse is described in the fuse allocation chart.

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Vehicle equipment ............................ 320
Important safety guidelines ............ 320
Directives to be observed ................ 321
Maintenance and care of wheels and tires ............................................. 321
Tire pressures ................................... 322
Loading the vehicle .......................... 330
Maximum tire load ............................ 334
Direction of rotation ......................... 334
Uniform Tire Quality Grading Standards .......................................... 334
Interchanging the wheels ................ 336
Tire labeling ....................................... 336
Definitions for tires and loading ...... 340
Wheel/tire combinations ................. 343

319

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Important safety guidelines

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 guidelines

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.

! For safety reasons, Mercedes-Benz recommends that you only use tires, wheels and accessories which have been approved by Mercedes-Benz specifically for your vehicle. These tires have been specially adapted for use with the control systems, such as ABS or ESP®, and are marked as follows: RMO = Mercedes-Benz Original RMOE = Mercedes-Benz Original Extended

(tires with run-flat characteristics)

RMO1 = Mercedes-Benz Original (AMG) Only use Mercedes-Benz Original Extended tires on wheels that have been specifically approved by Mercedes-Benz. If you use other tires, wheels and accessories, Mercedes-Benz cannot accept any responsibility for damage that may result from this. Further information about tires, wheels and approved combinations can be obtained from any authorized Mercedes-Benz Center.

i Further information about tires and

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

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Maintenance and care of wheels and tires

321

Directives to be observed

ROnly mount tires and wheels of the same

type and make.

ROnly mount tires of the correct size onto

the wheels.

RAfter mounting 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 surfaces decreases significantly when the tread depth is less than 1/8 in (3 mm).

RIf the vehicle is heavily laden, check the tire

pressure and adjust it 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.

Maintenance and care of wheels and tires Checking 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 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 321). 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 on 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 322).

Service life of tires The service life of tires depends on the following factors amongst other things: Rdriving style Rtire pressure Rmileage Replace the tires after six years at the latest, regardless of wear. This also applies to the emergency spare wheel/spare wheel.

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.

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322 Tire pressures

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

Do not use tires until they are 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 (TWI) are required by law. Six indicators are positioned over the tire tread. They are visible as soon as a tread depth of approximately 1/16 in (1.6 mm) is reached. 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.

Storing tires Store tires that are not being used in a cool, dry and preferably dark place. Protect the tires from contact with oil, grease and fuel.

Cleaning tires ! Do not use a high pressure jet with

circular jet nozzles (concentrated-power jets) to clean the tires. The high pressure of the water jet could damage the tires. Always replace damaged tires.

Tire pressures 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. 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 330). You will find a table of tire pressures for various operating conditions on the inside of your vehicle's fuel filler flap. To test tire pressure, use a suitable pressure gauge. The outer appearance of a tire does not permit any reliable conclusion about the tire pressure. On vehicles installed with the electronic tire pressure monitor, the tire pressure can be checked in the on-board computer. G Warning! Should the tire pressure drop repeatedly:

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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 pressure that is 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 operating conditions. If you check the tire pressure when the tires are warm, the resulting value 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 tires in a cold state 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 pressures 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 tire temperature and pressure 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.

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324 Tire pressures

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 sticker on the wheel rim of

the emergency spare wheel

Rin the "Tires" section (Y page 343) in this

Operator's Manual

Ron the Tire and Loading Information placard

on the driver’s door B-pillar

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 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 337).

i For vehicles towing a trailer, the fully

laden value on the tire inflation pressure label located on the inside of the fuel filler flap is valid for the rear axle.

Potential problems caused by overinflated/underinflated 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.

The tire pressure table is valid 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.

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Underinflated tires can: Rwear excessively and/or unevenly Radversely affect fuel economy Rfail from being overheated Radversely affect handling

Overinflated tires can: 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 Radversely affect ride comfort Rincrease stopping distance

Checking tire pressures Important safety guidelines 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 322).

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 322).

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 loss warning system (Canada only) Important safety guidelines While the vehicle is in motion, the tire pressure loss warning system monitors the set tire pressure using the rotational speed of the wheels. This enables the system to detect significant pressure loss in a tire. If the speed of rotation of a wheel changes as a result of a loss of pressure, a corresponding warning

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326 Tire pressures

message will appear in the multifunction display. 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. 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 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.

The function of the tire pressure loss warning system is limited or delayed if: Rsnow chains are mounted on your vehicle's

tires.

Rroad conditions are wintry. Ryou are driving on sand or gravel. Ryou adopt a very sporty driving style

(cornering at high speeds or driving with high rates of acceleration).

Ryou are towing a very heavy or large trailer. Ryou are driving with a heavy load or a load

on the roof.

Restarting the tire pressure loss warning system Restart the tire pressure loss warning system if you have: Rchanged the tire pressure Rchanged the wheels or tires Rmounted new wheels or tires X Before restarting, make sure that the tire pressures are set properly on all four tires for the respective operating conditions, using the Tire and Loading Information placard on the B-pillar on the driver's side or the tire pressure table on the fuel filler flap.

X Observe the notes in the section on tire

pressures (Y page 322). G Warning! The tire pressure loss warning system can only give reliable warnings if you have set the correct tire pressure. If an incorrect tire pressure is set, these incorrect values will be monitored. A tire with insufficient pressure results in vehicle instability when driving, thus increasing the risk of an accident.

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X Make sure that the key is in position 2

(Y page 149) in the ignition lock.

X Press and hold the V or U button on the multifunction steering wheel until the standard display appears in the multifunction display (Y page 202). X Press the * or & button until the Run Flat Indicator Active Menu: R- Button message appears in the multifunction display.

X Press the reset button (Y page 28) on the instrument cluster. The Restart Run Flat Indicator? Yes Cancel message appears in the multifunction display.

If you wish to confirm the restart: X Press the W button. The Run Flat Indicator Restarted message appears in the multifunction display. After a teach-in period, the tire pressure loss warning system will monitor the set tire pressures of all four tires.

If you wish to cancel the restart: X Press the X button. or X Wait until the Restart Run Flat Indicator? Yes Cancel message disappears. The tire pressure values stored at the last restart will continue to be monitored.

Tire pressure monitoring system (USA only) Important safety information 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

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correct wheel electronics units are installed in all wheels. The tire pressure monitor has a yellow warning lamp in the instrument cluster for indicating a pressure loss or malfunction. 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.

Rif 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 table on the driver's door B-pillar or the tire inflation pressure table 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 table or the tire inflation pressure table, 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 monitor (TPMS). An indicator lamp lights up if one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure indicator lamp lights up, 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

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responsibility to maintain correct tire pressure, even if underinflation has not reached the level at which the low tire pressure indicator lamp of the TPMS lights up. 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 indicator lamp. When the system detects a malfunction, the indicator lamp will flash for approximately 1 minute and then remain 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 indicator 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 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 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.

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

position 2 (Y page 149) in the ignition lock. X Press and hold the V or U button on the multifunction steering wheel until the standard display appears in the multifunction display (Y page 202).

X Press and hold the & or * button until the current tire pressure of each tire is shown in the multifunction display. If the vehicle has been parked for longer than 20 minutes, the Tire pressure displayed after driving for 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

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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. Each tire that is affected by a significant loss of pressure is highlighted by a red rectangle. If the Tire Pressure(s) Please Correct [bar] 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

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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. Restart the tire pressure monitor after you have set the tire pressure to the value recommended for the desired driving situation (Y page 322). 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 and hold the V or U button on the multifunction steering wheel until the standard display appears in the multifunction display (Y page 202).

X Press and hold the & or * button until the tire pressure of each tire or the tire pressure displayed after driving for several minutes message appears.

X Press the reset button on the instrument cluster (Y page 28). The Restart tire pressure monitor? message appears in the multifunction display.

If you wish to confirm the restart: X Press the W 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

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pressures are then accepted as reference values and monitored.

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

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

Maximum tire pressures 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 322).

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

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 installed 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 on 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.

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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 Details that are shown as examples on Tire and Loading Information placard are only examples. 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 Tire and Loading Information placard.

: B-pillar, driver's side

Maximum permissible gross vehicle weight rating i Details that are shown as examples on the

Tire and Loading Information placard are only examples. 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

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Steps for determining the maximum cargo 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 1400 lbs and there will be five 150 lbs passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lbs (1400 - 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 manual to determine how this reduces the available cargo and luggage load capacity of your vehicle (Y page 334).

The following table shows examples on how to calculate total load and cargo 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 331).

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

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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)

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)

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 334).

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 330). 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.

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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 % - 15 % of the gross weight of the trailer and its cargo.

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.

Direction of rotation

Tires with a specified direction of rotation have additional benefits, e.g. if there is a risk of hydroplaning. You will only gain these benefits if the correct direction of rotation is observed. An arrow on the sidewall of the tire indicates its correct direction of rotation. You may mount an emergency spare wheel/ spare wheel against the direction of rotation. Observe the time restriction on use as well as the speed limitation specified on the emergency spare wheel/spare wheel.

Uniform Tire Quality Grading Standards Overview of tire quality standards

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 336).

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 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.

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Quality grades can be found, where applicable, 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 U.S. federal 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. You should pay special attention to road conditions when temperatures are around the freezing point. Mercedes-Benz recommends a minimum tire tread depth of 1/6 in (4 mm) for all four winter tires to maintain normal driving characteristics in winter. Winter tires can reduce the braking distance on snow covered surfaces in comparison to summer tires. The braking distance is still much further than on surfaces that are not icy or covered with snow. Take appropriate care when driving. ! Avoid wheelspin. This can lead to damage to the drive train which is not covered by the Mercedes-Benz warranty conditions.

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

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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.

Tire labeling Overview of tire labeling The following markings are on the tire in addition to the tire name (sales designation) and the manufacturer's name: