2013 Mercedes-benz G Class Owners Manual

Position number B identifies the charged battery of the other vehicle or an equivalent jump- starting device. The jump-start terminal point consists of terminals ; and ?. 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 B

using the jumper cable. beginning with your own battery.

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

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

X Start the engine. X First, remove the jumper cable from ground point = and negative terminal A, 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. i Jump-starting is not considered to be a normal operating condition. i Jumper cables and further information regarding jump starting can be obtained at any

qualified specialist workshop.

Towing and tow-starting Important safety notes G WARNING The vehicle is braked when the HOLD function or DISTRONIC PLUS is activated. Therefore,

deactivate HOLD and DISTRONIC PLUS if the vehicle is to be towed.

! The vehicle can be towed a maximum of

30 miles (50km). The towing speed of 30 mph (50 km/h) must not be exceeded.

Towing and tow-starting 311

If the transfer case cannot be shifted into neutral N, you can tow the vehicle with one axle raised. Please bear the following in mind: Rremove the propeller shaft between the

transfer case and the rolling axle.

Rturn the SmartKey to position 1 in the

ignition lock (Y page 139).

The battery must be connected and charged. Otherwise, you: Rcannot turn the SmartKey in the ignition

lock to position 2(Y page 139)

Rcannot shift the automatic transmission to

position N

i Deactivate the automatic locking feature (Y page 75). You could otherwise be locked out when pushing or towing the vehicle.

Towing eyes Towing eyes, front

If the vehicle has to be towed more than 30 miles (50km), the entire vehicle must be raised and transported.

! Only secure the tow cable or tow bar to

the towing eyes. You could otherwise damage the vehicle.

! Do not tow with sling-type equipment.

This could damage the vehicle.

! Do not use the towing eyes for recovery purposes as this could damage the vehicle. If in doubt, recover the vehicle with a crane.

! When towing, pull away slowly and

smoothly. If the tractive power is too high, the vehicles could be damaged.

! Your vehicles is equipped with an

automatic transmission. Therefore, you must not have the vehicle tow-started. The transmission may otherwise be damaged. G WARNING If the weight of the vehicle to be towed or tow- started is greater than the permissible gross weight of your vehicle: Rthe towing eye could detach itself Rthe vehicle/trailer combination could

rollover.

There is a risk of an accident. When towing or tow-starting another vehicle, its weight should not be greater than the permissible gross weight of your vehicle.

Information on your vehicle's gross vehicle weight rating can be found on the vehicle identification plate (Y page 349). It is better to have the vehicle transported than to have it towed. If the transfer case can be shifted into neutral N, you can tow the vehicle.

: Towing eyes, front

Towing eye, rear

312 Towing and tow-starting

Rear towing eye : is located under the bumper, on the left-hand side when viewed in the direction of travel.

Towing a vehicle with both axles on the ground It is important that you observe the safety instructions when towing away your vehicle (Y page 310). X Switch on the hazard warning lamps

(Y page 104).

i In order to signal a change of direction when towing the vehicle with the hazard warning lamps switched on, use the combination switch as usual. In this case, only the turn signals for the desired direction flash. When you reset the combination switch, the hazard warning lamps start flashing again.

X Turn the SmartKey to position 2 in the

ignition lock (Y page 139).

X When the vehicle is stationary, depress the

brake pedal and keep it depressed.

Use the towing eyes to pull the vehicle if it needs to be transported on a trailer or transporter (Y page 311). X Apply the parking brake. X Turn the SmartKey to position 2 in the

ignition lock (Y page 139).

X Move the selector lever to N. X Shift the transfer case to

neutral(Y page 200).

X Secure the towing cable to the towing eyes

X Make sure that the vehicle cannot roll

(Y page 311).

away.

X Release the parking brake. X Load the vehicle onto the transporter. As soon as the vehicle is loaded: X Apply the parking brake. X Shift the automatic transmission to

position P.

X Turn the SmartKey to position 0 in the

ignition lock (Y page 139) and remove it.

X Secure the vehicle.

X Shift the transfer case to

neutral(Y page 200).

X Shift the automatic transmission to

position N.

X Release the brake pedal. X Release the parking brake (Y page 157). i The transmission can only change gear if

the battery has sufficient charge. If you cannot move the selector lever to N, the propeller shafts to the driven axles must be removed.

Transporting 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.

Recovering a vehicle that has become stuck ! Pull away smoothly, slowly, and in a

straight line when pulling out a vehicle that has become stuck. Excessive tractive power could damage the vehicles.

If the drive wheels get trapped on loose or muddy ground, recover the vehicle with the utmost care, especially so if the vehicle is laden. 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.

Towing in the event of malfunctions General notes ! If you are removing the propeller shaft, use M10 nuts as spacers on the M8 bolts and secure them with M8 nuts. New self-locking nuts must be used when the propeller shafts are refitted.

X Observe the safety notes as you do so

(Y page 310).

i Consult an authorized Mercedes-Benz

Center.

Engine damage, gear damage or electrical malfunctions X Move the selector lever to

position N(Y page 145). X Shift the transfer case to

neutral(Y page 200).

In the event of damage to the transfer case Have the propeller shafts between the axles and the transfer case removed.

In the event of damage to the front axle Have the propeller shaft between the rear axle and the transfer case removed. Have the vehicle towed with the front axle raised.

In the event of damage to the rear axle Have the propeller shaft between the front axle and the transfer case removed. Have the vehicle towed with the rear axle raised and with wheel rollers under the front axle.

Fuses

313

Fuses Important safety notes G WARNING Only use fuses that have been approved for Mercedes-Benz vehicles and that have the correct fuse rating for the systems concerned. Do not attempt to repair or bridge faulty fuses. Using fuses that have not been approved or attempting to repair or bridge faulty fuses could cause the fuse to be overloaded and result in a fire. Have the cause traced and rectified at a qualified specialist workshop.

! 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.

The fuses in your vehicle serve to close down faulty circuits. If a fuse blows, all the components on the circuit and their functions stop operating. 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. i If a fuse has blown, contact a breakdown

service or an authorized Mercedes-Benz Center.

If a newly inserted fuse also blows, have the cause traced and rectified at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.

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

brake.

X Switch off all electrical consumers. X Remove the SmartKey from the ignition

lock. All indicator lamps in the instrument cluster must be off.

314 Fuses

The fuses are located in various fuse boxes: RMain fuse box on the driver's side of the

dashboard

RFuse box in the front-passenger footwell RFuse box in the transmission tunnel RFuse box in the battery case The fuse allocation chart and the spare fuses are in the main fuse box on the dashboard (Y page 314). You will find the fuse removal device in the vehicle tool kit (Y page 302).

Dashboard fuse box ! 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.

! Make sure that no moisture can enter the

fuse box when the cover is open.

! When closing the cover, make sure that it is lying correctly on the fuse box. Moisture seeping in or dirt could otherwise impair the operation of the fuses.

X Open the driver's door. X To open: pull cover : outwards in the

direction of the arrow and remove it.

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

the dashboard.

X Fold cover : inwards until it engages.

Fuse box in the front-passenger footwell ! Make sure that no moisture can enter the

fuse box when the cover is open.

! When closing the cover, make sure that it is lying correctly on the fuse box. Moisture seeping in or dirt could otherwise impair the operation of the fuses.

X Unscrew screws :. X Lift up cover ; in the direction of the

arrow.

= Fuse box

Fuse box in the transmission tunnel ! Make sure that no moisture can enter the

fuse box when the cover is open.

! When closing the cover, make sure that it is lying correctly on the fuse box. Moisture seeping in or dirt could otherwise impair the operation of the fuses.

X Fold down the cup holder on the center

console (Y page 268).

X Adjust the front-passenger seat to its

foremost position (Y page 86).

X To open: remove screws :. X Remove cover ; in the direction of the

arrow.

X To close: clip in cover ;. X Install cover ; with screws :.

Fuse box in the battery case The fuses in the battery case do not usually need to be replaced. If a fuse change is necessary, consult a qualified specialist workshop.

Fuses

315

316

Useful information ............................ 318
Important safety notes .................... 318
Operation ........................................... 319
Winter operation ............................... 320
Tire pressure ..................................... 322
Loading the vehicle .......................... 328
Uniform Tire Quality Grading Standards .......................................... 332
Tire labeling ....................................... 334
Changing a wheel ............................. 340
Wheel and tire combinations ........... 344

317

318

Important safety notes

Useful information

i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety- related systems and functions.

i Read the information on qualified specialist workshops: (Y page 23).

Important safety notes

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 notice sudden significant vibrations or unusual handling performance or if you suspect that damage has occurred to the vehicle, you should activate the hazard warning lamps, gently reduce speed and carefully head for an area that is located at a safe distance from the road. Check the tires and the underside of the vehicle for damage. If the vehicle seems unsafe, have the vehicle towed away to the nearest Mercedes-Benz Center or tire dealer to be repaired. 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. G Warning A flat tire severely impairs the driving, steering and braking characteristics of the vehicle. There is a risk of an accident. do not drive with a flat tire. Immediately replace the flat tire with your spare wheel, or consult a qualified specialist workshop.

Consult an authorized Mercedes-Benz Center if you require information on approved and recommended tires and wheels for summer and winter operation. Advice on purchasing and caring for tires is also available there. Accessories that are not approved for your vehicle by Mercedes-Benz or are not being used correctly can impair the operating safety. Before purchasing and using non-approved accessories, visit a qualified specialist workshop and ask about: Rsuitability Rlegal stipulations Rfactory recommendations

Information on the dimensions and types of wheels and tires for your vehicle can be found in the "Wheel/tire combinations" section (Y page 344). Information on air pressure for the tires on your vehicle can be found: Ron the tire pressure label on the fuel filler

flap

Rin the "Tire pressure" section i Further information on wheels and tires can be obtained at any qualified specialist workshop.

Operation Notes on driving If the vehicle is heavily loaded, check the tire pressures and correct them if necessary. When 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, may be damaged.

Regular checking of 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 at least once a month, as well as after driving off-road or on rough roads. Damage includes bulges and deformation on tires, cuts, punctures, cracks or severe corrosion on wheels, for

Operation 319

example. 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 319). In order to inspect the inner side of the tire surface, turn the steering wheel to full lock.

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

RYou should regularly check the pressure of

all your tires including the spare wheel, particularly prior to long trips. Adjust the tire pressure as necessary (Y page 327). The service life of tires depends, among other things, on the following factors: RDriving style RTire pressure RDistance covered

Tire tread 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 á inches (1.6 mm), we recommend that you do not allow your tires to wear down to that level. As tread depth approaches â inches (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.

320 Winter operation

Mark : is a visual warning on the tread wear indicators (TWI). The arrow indicates the placement of the tire tread. Do not drive with tires which have too little tread depth. 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 once the tread depth is approximately 1/16 in (1.6 mm). If this is the case, the tire is so worn that it must be replaced. The recommended tread depth for summer tires is at least 1/8 in (3 mm). The recommended tread depth for winter tires is at least 1/6 in (4 mm).

Selecting, mounting and replacing tires ROnly mount tires and wheels of the same

type and make.

ROnly mount approved tires of the correct

size onto the wheels.

RTires are supplied with a protective layer

from the factory. Break in new tires at moderate speeds for the first 60 miles (100 km). They only reach their full performance after this distance.

RDo not drive with tires which have too little

tread depth. as this significantly reduces the traction on wet roads (hydroplaning).

RReplace the tires after six years at the

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

Winter operation General notes Have your vehicle winterproofed at a qualified specialist workshop at the onset of winter. Observe the notes in the "Changing a wheel" section (Y page 340).

Driving with summer tires At temperatures below 45 ‡ (+7 †), summer tires lose elasticity significantly, and therefore traction and braking power as well. Change the tires on your vehicle to M+S tires. Using summer tires at very cold temperatures could cause cracks to form, thereby damaging the tires permanently. Mercedes-Benz cannot accept responsibility for this type of damage.

M+S tires G WARNING M+S tires with a tire tread depth of less than ã in (4 mm) are not suitable for use in winter and do not provide sufficient traction. There is a risk of an accident. M+S tires with a tread depth of less than ã in (4 mm) must be replaced immediately. G WARNING The spare wheel and M+S tires have different tire characteristics. Driving characteristics can be severely impaired when you mount the spare wheel. There is a risk of an accident. You should therefore adapt your driving style and drive carefully. Have the spare wheel

replaced with a new wheel with an M+S tire at the nearest qualified specialist workshop.

At temperatures below 45 ‡(+7 †), use all- season tires or winter tires. Both types of tire are identified by the M+S marking. Not all tires with the M+S marking provide the driving characteristics of winter tires. In addition to the M+S marking, winter tires also have the i snowflake symbol on the tire wall. Tires with this marking fulfill the requirements of the Rubber Manufacturers Association (RMA) and the Rubber Association of Canada (RAC) regarding snow traction, and were specially developed for driving on snow. Only these tires will allow driving safety systems such as ABS and ESP® to function optimally in winter, since these tires have been designed specifically for driving on snow. Use M+S tires of the same make and tread on all wheels to maintain safe handling characteristics. Always observe the maximum permissible speed specified for the M+S tires you have mounted. When you have installed the M+S tires: X Check the tire pressures (Y page 325). X Restart the tire pressure monitor

(Y page 327).

i You can obtain information about winter

tires that have been approved by Mercedes-Benz especially for your vehicle at any Mercedes-Benz Service center.

i For further information about tires, see

(Y page 346).

Snow chains ! Information about the use of snow chain compatible AMG winter tires is applicable for AMG tires. Use of snow chains is only permissible with these tires.

Winter operation 321

! On some tire sizes there is not enough

space for snow chains. To avoid damage to the vehicle or tires, observe the "Wheel and tire combinations" section under "Tires and wheels".

! If snow chains are mounted on the front

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

For safety reasons, Mercedes-Benz recommends that you only use snow chains that have been specially approved for your vehicle by Mercedes-Benz, or are of a corresponding standard of quality. ROnly use snow chains when driving on

roads completely covered by snow. Remove the snow chains as soon as possible when you are no longer driving on snow-covered roads.

RLocal regulations may restrict the use of

snow chains. Observe the relevant regulations when mounting snow chains. RDo not exceed the maximum permissible

speed of 30 mph (50 km/h).

If you intend to mount snow chains, please bear the following points in mind: RSnow chains cannot be mounted on all wheel/tire combinations (Y page 62).

RMount snow chains only in pairs and only

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

i You may wish to deactivate

ESP®(Y page 62) when pulling away with snow chains installed. This way you can allow the wheels to spin in a controlled manner, achieving an increased driving force (cutting action).

322 Tire pressure

Tire pressure Tire pressure specifications Important safety notes G WARNING Underinflated or overinflated tires pose the following risks: Rthe tires may burst, especially as the load

and vehicle speed increase.

Rthe tires may wear excessively and/or unevenly, which may greatly impair tire traction.

Rthe driving characteristics, as well as steering and braking, may be greatly impaired.

There is a risk of an accident. Follow recommended tire inflation pressures and check the pressure of all the tires including the spare wheel: Rmonthly, at least Rif the load changes Rbefore beginning a long journey Runder different operating conditions, e.g.

off-road driving

If necessary, correct the tire pressure.

i The specifications on the sample Tire and

Loading Information placard and tire pressure tables are 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 the Tire and Loading Information placard and tire pressure table on the vehicle.

General notes The recommended tire pressures for the tires mounted at the factory can be found on the labels described here. Operation with a trailer: the applicable value for the rear tires is the maximum tire pressure value stated in the table inside the fuel filler flap.

Further information on tire pressures can be obtained at a qualified specialist workshop.

Tire and Loading Information placard

: Recommended tire pressures The Tire and Loading Information placard is on the B-pillar on the driver's side (Y page 328). The Tire and Loading Information placard contains the recommended tire pressures for cold tires. The recommended tire pressures are valid for the maximum permissible load and up to the maximum permissible vehicle speed.

Tire pressure table

Example: tire pressure table for all tires permitted for this vehicle by the factory The tire pressure table is on the inside of the fuel filler flap. The tire pressure table contains the recommended pressures for cold tires for various operating conditions, i.e. differing load and speed conditions.

Tire pressure 323

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.

Important notes on tire pressure G WARNING If the tire pressure drops repeatedly, the wheel, valve or tire may be damaged. Tire pressure that is too low may result in a tire blow-out. There is a risk of an accident. RCheck the tire for foreign objects. RCheck whether the wheel is losing air or the

valve is leaking.

If you are unable to rectify the damage, contact a qualified specialist workshop. G WARNING If you fit unsuitable accessories onto tire valves, the tire valves may be overloaded and malfunction, which can cause tire pressure loss. Due to their design, retrofitted tire pressure monitors keep the tire valve open. This can also result in tire pressure loss. There is a risk of an accident. Only screw the standard valve cap or other valve caps approved by Mercedes-Benz for your vehicle onto the tire valve.

Use a suitable pressure gauge to check the tire pressure. The outer appearance of a tire does not permit any reliable conclusion about the tire pressure. On vehicles equipped with the electronic tire pressure monitoring system, the tire pressure can be checked using the on-board computer. The tire temperature and pressure increase when the vehicle is in motion. This is dependent on the driving speed and the load. Therefore, you should only correct tire pressures when the tires are cold.

Example: tire pressure table with tire dimensions If a tire size precedes a tire pressure, the tire pressure information following is only valid for that tire size. The load conditions "partially laden" and "fully laden" are defined in the table for different numbers of occupants and amounts of luggage. The actual number of seats may differ.

Some tire pressure tables only show the rim diameter instead of the complete tire size, e.g. R16. The rim diameter is part of the tire size and can be found on the tire sidewall (Y page 334). If the tire pressures have been set to the lower values for lighter loads and/or lower road speeds, the pressures should be reset to the higher values: Rif you want to drive with an increased load

and/or

Rif you want to drive at higher road speeds. i The tire pressures for increased loads

and/or higher road speeds, shown in the tire pressure table, may have a negative effect on driving comfort.

324 Tire pressure

The tires are cold: Rif the vehicle has been parked without

direct sunlight on the tires for at least three hours and

Rif the vehicle has been 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. 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 pressures for cold tires: Ron the Tire and Loading Information placard

on the B-pillar on the driver's side

Rin the tire pressure table on the inside of

the fuel filler flap

Observe the following for the tire pressure on the spare wheel: Rthe tire and loading information table on

the B-pillar on the driver's side.

Rthe tire pressure sticker on the inside of the

fuel filler flap.

Underinflated or overinflated tires Underinflation G WARNING Tires with pressure that is too low can overheat and burst as a consequence. In addition, they also suffer from excessive and/ or irregular wear, which can severely impair the braking properties and the driving characteristics. There is a risk of an accident.

Avoid tire pressures that are too low in all the tires, including the spare wheel.

Underinflated tires may: Roverheat, leading to tire defects Rhave an adverse effect on handling

characteristics

Rwear quickly and unevenly Rhave an adverse effect on fuel consumption

Overinflation G WARNING Tires with excessively high pressure can burst because they are damaged more easily by road debris, potholes etc. In addition, they also suffer from irregular wear, which can severely impair the braking properties and the driving characteristics. There is a risk of an accident. Avoid tire pressures that are too high in all the tires, including the spare wheel.

Overinflated tires may: Rincrease the braking distance Rhave an adverse effect on handling

characteristics

Rwear quickly and unevenly Rhave an adverse effect on ride comfort Rbe more susceptible to damage

Maximum tire pressures

: Example: maximum permissible tire

pressure

Never exceed the maximum permissible tire inflation pressure. Always observe the recommended tire pressure for your vehicle when adjusting the tire pressure (Y page 338). i The actual values for tires are vehicle-

specific and may deviate from the values in the illustration.

Checking the tire pressures Important safety notes Observe the notes on tire pressure (Y page 322). Information on air pressure for the tires on your vehicle can be found: Ron the vehicle's Tire and Loading Information placard on the B-pillar (Y page 322)

Ron the tire pressure label on the fuel filler

flap (Y page 322)

Rin the "Tire pressure information" section Rin the "Tire pressure information" section

(Y page 322)

Checking tire pressures manually To determine and set the correct tire pressure, proceed as follows: X Remove the valve cap of the tire that is to

be checked.

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 (Y page 322).

X The tire pressure is too low: increase the tire pressure to the recommended value. X The tire pressure is too high: press down the metal pin in the valve using the tip of a pen, for example. Air is released from the tire.

Tire pressure 325

X Check the tire pressure again with the tire

pressure gauge.

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

Tire pressure monitor Important safety notes G WARNING Each tire, including the spare (if provided), should be checked at least once a month when cold and inflated to the pressure recommended by the vehicle manufacturer on the Tire and Loading Information placard on the driver's door B-pillar or the tire 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 pressure label, you should determine the proper tire 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. USA only: Your vehicle has also been equipped with a TPMS malfunction indicator to indicate if the system is not operating properly. The TPMS

326 Tire pressure

malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the warning lamp will flash for approximately a minute and then remain continuously illuminated. This sequence will be repeated every time the vehicle is started as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.

It is the driver's responsibility to set the tire pressure to the recommended cold tire pressure suitable for the operating situation (Y page 322). Note that the correct tire pressure for the current operating situation must first be taught-in to the tire pressure monitor. If there is a substantial loss of pressure, the warning threshold for the warning message is aligned to the reference values taught-in. Restart the tire pressure monitor after adjusting to the cold tire pressure (Y page 327). The current pressures are saved as new reference values. As a result, a warning message will appear if the tire pressure drops significantly. The tire pressure monitor does not warn you of an incorrectly set tire pressure. Observe the notes on the recommended tire pressure (Y page 322). The tire pressure monitor is not able to warn you of a sudden loss of pressure, e.g. if the tire is penetrated by a foreign object. In the event of a sudden loss of pressure, bring the vehicle to a halt by braking carefully. Avoid abrupt steering maneuvers.

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

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

RUSA only: if the warning lamp flashes for

around a minute and then remains lit constantly, the tire pressure monitor is malfunctioning.

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. USA only: if there is a malfunction with the tire pressure monitor it can take more than ten minutes until the malfunction is shown by the tire pressure warning lamp flashing for approximately one minute and then lighting up continuously. When the malfunction has been rectified, the tire pressure warning lamp goes out after a few minutes of driving. 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.

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 being operated in or near the vehicle. i USA only:

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause interference, and 2. 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.

i Canada only:

This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: 1. This device may not cause interference, and 2. this device must accept any interference received, including interference that may cause undesired operation. Any unauthorized modification to this device could void the user's authority to operate the equipment.

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

position 2 (Y page 139) in the ignition lock. X Press the = or ; button on the steering wheel to select the Serv. menu. X Press the 9 or : button to select Tire Pressure. X Press button a.

The current tire pressure for each wheel will be displayed in the multifunction display. If the vehicle has been parked for over 20 minutes, the message Tire pressure

Tire pressure 327

will be displayed after driving a few minutes appears. 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 display message is shown instead of the tire pressure display. The tire pressures are already being monitored. i If a 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's current tire pressure.

Tire pressure monitor 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 in the pressure display. X If the Correct Tire PressureCorrect Tire Pressure message appears in the multifunction display, 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 When you restart the tire pressure monitor, all existing warning messages are deleted and the warning lamps go out. The monitor uses

328 Loading the vehicle

the currently set tire pressures as the reference values for monitoring. In most cases, the tire pressure monitor will automatically detect the new reference values after you have changed the tire pressure. However, you can also define reference values manually as described here. X Set the tire pressure to the value

recommended for the corresponding driving situation on the Tire and Loading Information placard on the driver's side B-pillar (Y page 322). Additional tire pressure values for different loads can also be found on the tire pressure table on the inside of the fuel filler flap (Y page 322).

X Make sure that the tire pressure is correct

on all four wheels.

X Make sure that the SmartKey is in

position 2 (Y page 139) in the ignition lock. X Press the = or ; button on the steering wheel to select the Serv. menu. X Press the 9 or : button to select Tire Pressure. X Press the a button.

The multifunction display shows the current tire pressure for the individual tires or the Tire pressure will be displayed after driving a few minutes message. X Press the : button. The Use Current Pressures as New Reference Values message appears in the multifunction display.

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

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

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

Loading the vehicle Instruction labels for tires and loads G WARNING Overloaded tires can overheat, causing a blowout. Overloaded tires can also impair the steering and driving characteristics and lead to brake failure. There is a risk of accident. Observe the load rating of the tires. The load rating must be at least half of the GAWR of your vehicle. Never overload the tires by exceeding the maximum load.

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

(2) The vehicle identification plate is on the B-pillar on the driver's side. The vehicle identification plate informs you of the gross vehicle weight rating. It is made up

of the vehicle weight, all vehicle occupants, the fuel and the cargo. You can also find information about the maximum gross axle weight rating 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.

Maximum permissible gross vehicle weight rating

X Specification for maximum gross vehicle weight : is listed in the Tire and Loading Information placard: "The combined weight of occupants and cargo should never exceed XXX kilograms or XXX lbs."

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

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

Loading the vehicle 329

Number of seats

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

Loading Information placard in the illustration are 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.

Determining the correct load limit Step-by-step instructions 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.

330 Loading the vehicle

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- pound 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. 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. This reduces the available cargo and luggage load capacity of your vehicle (Y page 358).

Loading the vehicle 331

Example: steps 1 to 3
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 maximum load of 1500 lbs (680 kg). This is for illustration purposes only. Make sure you are using the actual load limit for your vehicle stated on your vehicle's Tire and Loading Information placard (Y page 328). The higher the weight of all the occupants, the smaller the maximum load for luggage. Additional information when towing a trailer (Y page 358). Step 1

Example 1
1500 lbs (680 kg) 1500 lbs (680 kg) 1500 lbs (680 kg)

Example 2

Example 3

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

Step 2

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

Gross weight of all occupants

Example 1

Example 2

Example 3

Front: 2
Rear: 3
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)

Front: 1

Occupant 1: 150 lbs (68 kg)

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

540 lbs (245 kg)

150 lbs (68 kg)

332 Uniform Tire Quality Grading Standards

Example 1
1500 lbs (680 kg) Ò750 lbs (340 kg) = 750 lbs (340 kg)

Example 2
1500 lbs (680 kg) Ò540 lbs (245 kg) = 960 lbs (435 kg)

Example 3
1500 lbs (680 kg) Ò150 lbs (68 kg) = 1350 lbs (612 kg)

Step 3

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

Vehicle identification plate Even if you have calculated the total load 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 of the vehicle (Y page 328). Permissible gross vehicle weight: the gross weight of the vehicle, all passengers, load and trailer load/noseweight (if applicable) must not exceed the permissible gross vehicle weight. Gross axle weight rating: the maximum permissible weight 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.

Trailer load/noseweight The trailer load/noseweight affects the gross weight of the vehicle. If a trailer is attached, the trailer load/noseweight is included in the load along with occupants and luggage. The trailer load/noseweight is usually

approximately 10% of the gross weight of the trailer and its load. Only use a trailer tow hitch that has been approved for your vehicle by Mercedes-Benz. Comply with the manufacturer's operating instructions for operation, care and maintenance.

Uniform Tire Quality Grading Standards Overview of Tire Quality Grading Standards

Uniform Tire Quality Grading Standards are U.S. government specifications. Their purpose is to provide drivers with uniform reliable information on tire performance data. Tire manufacturers have to grade tires using three performance factors: : tread wear grade, ; traction grade and = temperature grade. These regulations do not apply to

Uniform Tire Quality Grading Standards

333

Canada. Nevertheless, all tires sold in North America are provided with the corresponding quality grading markings on the sidewall of the tire. Where applicable, the tire grading information can be found on the tire sidewall between the tread shoulder and maximum tire width. Example: RTreadwear grade: 200
RTraction grade: AA RTemperature grade: A All passenger car tires must conform to the statutory safety requirements in addition to these grades. i The actual values for tires are vehicle-

specific and may deviate from the values in the illustration.

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 course. 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.

! Avoid wheelspin. This can lead to damage

to the drive train.

The traction grades, from highest to lowest, are AA, A, B, and C. Those 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. 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 freezing point. Mercedes-Benz recommends a minimum tread depth of ã in (4 mm) on all four winter tires. Observe the legally required minimum tire tread depth (Y page 319). Winter tires can reduce the braking distance on snow-covered surfaces in comparison with 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. Further information on winter tires (M+S tires) (Y page 320).

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. These represent 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

334 Tire labeling

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.

Tire labeling Tire labeling overview

i Tire data is vehicle-specific and may deviate from the data in the example.

Tire size designation, load-bearing capacity and speed rating G WARNING Exceeding the stated tire load-bearing capacity and the approved maximum speed could lead to tire damage or the tire bursting. There is a risk of accident. Therefore, only use tire types and sizes approved for your vehicle model. Observe the tire load rating and speed rating required for your vehicle.

: Uniform tire Quality Grading Standard

; DOT tire Identification Number

(Y page 338)

(Y page 337)

= Maximum tire load (Y page 337) ? Maximum tire pressures (Y page 324) A Manufacturer B Tire material (Y page 337) C Tire size designation, load-bearing

capacity and speed rating (Y page 334)

D Load identification (Y page 336) E Tire name The markings described above are on the tire in addition to the tire name (sales designation) and the manufacturer's name.

: Tire width ; Height-width ratio in percentage = Tire code ? Rim diameter A Load bearing index B Speed rating General: depending on the manufacturer's standards, a letter is imprinted into the tire wall before the size description. If there is no letter preceding the size description (as shown above): these are passenger vehicle tires according to European manufacturing standards. If "P" precedes the size description: passenger vehicle tires according to U.S. manufacturing standards.

If "P" precedes the size description: light truck tires according to U.S. manufacturing standards. If "T" precedes the size description: these are compact emergency spare wheels at high tire pressure, to be used only temporarily in an emergency. Tire width: tire width : shows the nominal tire width in millimeters. Height-width ratio: height-width ratio ; is the ratio between tire height and tire width. The aspect ratio is calculated by dividing the tire width by the tire height. The resulting quotient is given as a percentage. Tire code: tire code = shows the tire type. "R" represents radial tires; "D" represents diagonal tires; "B" represents diagonal radial tires. Optionally, tires with a maximum speed of over 149 mph (240 km/h) may have "ZR" in the size description, depending on the manufacturer (e.g. 245/40 ZR 18). Rim diameter: rim diameter ? is the diameter of the bead seat, not the diameter of the rim flange. The rim diameter is specified in inches (in). Load bearing index: B load bearing index A (also load index) is a numerical code that specifies the maximum load-bearing capacity of a tire. Do not overload the tires by exceeding the specified load limit. The maximum permissible load can be found on the vehicle's Tire and Loading Information placard on the B-pillar on the driver's side (Y page 328). Example: Load-bearing index 91 indicates a maximum load of 1356 lbs (615 kg) that the tires can bear. For further information on the maximum tire load in kilograms and pounds, see (Y page 337). For further information on the load bearing index, see "Load index" (Y page 336).

Tire labeling 335

Speed rating: speed rating B specifies the approved maximum speed of the tire. i Tire data is vehicle-specific and may deviate from the data in the example. Regardless of the speed rating, always observe the speed limits. Drive carefully and adapt your driving style to the traffic conditions. i Since 2009, tires in Europe which

correspond to the noise limitations of Directive ECE-R 117 show an >>S<< (Sound) mark. This identification follows the type approval number and has no connection with the speed rating.

Summer tires Index ZR...Y ZR...(..Y) ZR

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) over 186 mph (300 km/h) over 149 mph (240 km/h)

ROptionally, tires with a maximum speed of over 149 mph (240 km/h) may have "ZR" in the size description, depending on the manufacturer (e.g. 245/40 ZR18). The service specification is made up of load-bearing index A and speed rating B.

RIf the size description of your tire includes

"ZR" and there are no service

336 Tire labeling

specifications, ask the tire manufacturer in order to find out the maximum speed. If a service specification is available, the maximum speed is limited according to the speed rating in the service specification. Example: 245/40 ZR 18 97 Y. In this example, "97 Y" is the service specification. The letter "Y" represents the speed rating and the maximum speed of the tire is limited to 186 mph(300 km/h).

RThe size description for all tires with maximum speeds of over 186 mph (300 km/h) must include "ZR" and the service specification must be given in parentheses. Example: 275/40 ZR 18 (99 Y). The speed rating "(Y)" indicates that the maximum speed of the tire is over 186 mph (300 km/h). Ask the tire manufacturer about the maximum speed.

All-weather tires and winter tires Index Q M+S4
T M+S4
H M+S4
V M+S4

Speed rating up to 100 mph (160 km/h) up to 118 mph (190 km/h) up to 130 mph (210 km/h) up to 149 mph (240 km/h)