2011 Mercedes-benz G Class Owners Manual

Do not place any metal objects on the battery as this could result in a short circuit. Use leak-proof batteries only to avoid the risk of acid burns in the event of an accident. Take care that you do not become statically charged, e.g. by wearing synthetic clothing or rubbing against textiles. For this reason, you also should not pull or push the battery over carpets or other synthetic materials. Never touch the battery first. First, touch the outside body of the vehicle in order to release any possible electrostatic charges. Do not rub the battery with rags or cloths. The battery could explode if touched due to electrostatic charge or due to spark formation.

! Switch off the engine and remove the

SmartKey before disconnecting the terminal clamps from the battery. You may otherwise destroy electronic components, such as the alternator.

! Like other batteries, the vehicle battery may discharge over time if you do not use the vehicle. In this case, have the battery disconnected at a qualified specialist workshop, e.g. an authorized Mercedes- Benz Center. You can also charge the battery with a charger recommended by

Mercedes-Benz. Contact an authorized Mercedes-Benz Center for further information. The battery, breather hose and cover of the positive terminal clamp must be installed securely during operation.

i Remove the SmartKey if you park the vehicle and do not require any electrical consumers. The vehicle will then use very little energy, thus conserving battery power.

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

e.g. if the battery has been reconnected, you must carry out the following tasks: Rreset the head restraints on the front

seats (Y page 80).

Charging the battery G Warning Never charge a battery while still installed in the vehicle unless the accessory battery charge unit approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions that may result in paint damage, corrosion or personal injury. An accessory battery charge unit specially adapted for Mercedes-Benz vehicles and tested and approved by Mercedes-Benz is available. It permits the charging of the battery in its installed position. Contact an authorized Mercedes-Benz Center for information and availability. Charge the battery in accordance with the separate instructions for the accessory battery charger.

G Warning There is a risk of acid burns during the charging process due to the gases which escape from the battery. Do not lean over the battery during the charging process. G Warning Battery acid is caustic. Avoid contact with the skin, eyes or clothing.

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

! Only use battery chargers with a

maximum charging voltage of 14.8 V.

! Only charge the battery using the jump-

starting connection point.

The jump-starting connection point is in the engine compartment (Y page 238). X Open the hood (Y page 214). X Connect the battery charger to the positive terminal and earth point in the same order as when connecting the donor battery in the jump-starting procedure (Y page 238).

X Read the battery charger's operating

instructions before charging the battery.

Battery

237

238

Jump-starting

Jump-starting

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

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

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

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

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

X You may only jump-start the vehicle when the engine and catalytic converter are cold. X Do not start the engine if the battery is frozen. Let the battery thaw first. X Jump-starting may only be performed from batteries with a nominal voltage of 12 V. X Only use jumper cables that have a sufficient cross-section and insulated terminal clamps. X Make sure that the jumper cables cannot come into contact with parts, such as the pulley

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

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

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

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

authorized Mercedes-Benz Center.

X Make sure that the two vehicles do not touch. X Apply the parking brake. X Move the selector lever to P. X Switch off all electrical consumers (e.g. radio, blower, etc.). X Open the hood (Y page 214).

Jump-starting 239

Position number B identifies the charged battery of the other vehicle or an equivalent jump- starting device. 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 ? of donor battery B to earth point A 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 earth point A 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.

240 Towing and tow-starting

Towing and tow-starting Important safety notes 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 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. If the SmartKey is left in starter switch position 0 for an extended period of time, it can no longer be turned in the switch. In this case, the steering is locked. To unlock, remove SmartKey from starter switch and reinsert.

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

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

! 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. If the transfer case can be shifted into neutral N, you can tow the vehicle. 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 key to position 1 in the ignition

lock.

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

position 2

Rcannot shift the automatic transmission to

position N

i Deactivate the automatic locking feature

(Y page 165) You could otherwise be locked out when pushing or towing the vehicle.

Towing eye Towing eye, front

: Towing eyes, front

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

Towing and tow-starting 241

X Release the brake pedal. X Release the parking brake. i The transmission can only change gear when the battery has sufficient charge. If you cannot move the selector lever to N, you must remove the propeller shafts to the driven axles.

Transporting the vehicle Use the towing eyes to pull the vehicle if it needs to be transported on a trailer or transporter. X Turn the key to position 2 in the ignition

lock.

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

N(Y page 126).

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

applying the parking brake.

X Shift the automatic transmission to

position P.

X Turn the key in the ignition lock to position

0 and remove the key from the ignition lock.

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.

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.

: Towing eye, rear

Towing the vehicle with both axles on the ground It is important that you observe the safety instructions when towing away your vehicle (Y page 240). 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.

X Switch on the hazard warning lamps

(Y page 93).

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

X Turn the key to position 2 in the ignition

lock.

X When the vehicle is stationary, depress the

brake pedal and keep it depressed.

X Shift the transfer case to neutral position

N (Y page 126).

position N.

X Shift the automatic transmission to

242 Electrical fuses

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 240).

i Consult an authorized Mercedes-Benz

Center.

Engine damage, gear damage or electrical malfunctions X Move the selector lever to N(Y page 122). X Shift the transfer case to neutral position

N (Y page 126).

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

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.

Then, have the vehicle towed with the rear axle raised and with wheel rollers under the front axle.

Electrical fuses Important safety notes The fuses in your vehicle serve to close down faulty circuits. If a fuse blows, all the components on the circuit and their functions stop operating. 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.

Electrical fuses

243

Fuse box in the front-passenger footwell

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

arrow.

X Remove screws =. X Remove cover ? in the direction of the

arrow.

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. 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 243). You can find the fuse extractor in the vehicle tool kit (Y page 229).

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.

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

direction of the arrow and remove it.

244 Electrical fuses

To make it easier to change the fuse, you can fold fuse box A down slightly: X Remove screws B. X Fold fuse box A down.

Fuse box on the transmission tunnel In order to access the fuse box, you have to remove the stop clamps on the front- passenger seat. G Warning! Do not drive the vehicle when the front end stops are not correctly installed. Failure to reinstall stops as indicated may result in serious injury in certain frontal crashes. Adjust the front passenger seat as far as possible rearward from the dashboard when the seat is occupied. Comply with information on occupant safety section.

The stop clamps are at the front of the guide rails.

Stop clamp of the right guide rail, reverse image for the left : Stop clamp ; Spacing X To remove the stop clamps: remove both stop clamps : of the front-passenger seat guide rails using a screwdriver.

! When replacing the stop clamps, make

sure you maintain the correct spacing.

X To open the fuse box: move the front- passenger seat to its foremost position.

X Remove screws :. X Remove cover ; in the direction of the

arrow.

Fuse box in the battery case The battery case is under a cover in the rear footwell. The fuses in the battery case do not usually need to be replaced. If a fuse has to be changed, visit a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. ! The cover must be seated properly,

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

Vehicle equipment ............................ 246
Important safety notes .................... 246
Operation ........................................... 246
Winter operation ............................... 248
Tire pressure ..................................... 249
Loading the vehicle .......................... 256
Maximum tire load ............................ 260
Uniform Tire Quality Grading Standards .......................................... 261
Tire labeling ....................................... 262
Definitions for tires and loading ...... 266
Changing a wheel ............................. 269
Wheel and tire combinations ........... 270

245

246 Operation

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. Please note that your vehicle may not be equipped with all features described. This also applies to safety- relevant systems and functions.

Important safety notes

Contact an authorized Mercedes-Benz Center if you require information on tested and recommended tires and wheels for summer and winter driving. Advice on purchasing and caring for tires is also available there. G Warning Replace rims or tires with the same designation, manufacturer and type as shown on the original part. For further information contact an authorized Mercedes-Benz Center. If incorrectly sized rims and tires are mounted, the wheel brakes or suspension components can be damaged. Also, the operating clearance of the wheels and the tires may no longer be correct. G Warning Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them. When replacing rims, only use genuine Mercedes-Benz wheel bolts specified for the particular rim type. Failure to do so can result in the bolts loosening and possibly an accident. Retreaded tires are not tested or recommended by Mercedes-Benz, since previous damage cannot always be recognized on retreads. The operating safety of the vehicle cannot be assured when such tires are used.

G Warning If you feel a sudden significant vibration or ride disturbance, or you suspect that possible damage to your vehicle has occurred, you should turn on the hazard warning flashers, carefully slow down, and drive with caution to an area which is a safe distance from the road. Inspect the tires and the vehicle underbody for possible damage. If the vehicle appears unsafe, have the vehicle towed to the nearest authorized Mercedes-Benz Center or tire dealer for repairs. G Warning Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You might lose control of the vehicle. Continued driving with a flat tire or driving at high speed with a flat tire will cause excessive heat build- up and possibly a fire.

i Further information about wheels and

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

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

Notes on regularly inspecting wheels and tires G Warning Regularly check the tires for damage. Damaged tires can cause tire inflation

pressure loss. As a result, you could lose control of your vehicle. Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them.

RRegularly check the wheels and tires of

your vehicle for damage (e.g. cuts, punctures, tears, bulges on tires and deformation or cracks 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 247). If necessary, turn the front wheels to full lock in order to inspect the inner side of the tire surface.

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

RRegularly check the pressure of all the tires including the spare wheel, particularly prior to long trips, and correct the pressure as necessary (Y page 249).

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.

Operation 247

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

Do not use tires that 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).

Indicator : for tread wear is integrated into the tire tread.

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

type and make.

ROnly mount tires of the correct size onto

the wheels.

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

RDo not use tires that are excessively worn

as the tire traction on wet road surfaces

248 Winter operation

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

RReplace the tires after six years at the

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

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

Winter operation Please bear the following in mind Have your vehicle winterproofed at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center, at the onset of winter. Observe the notes in the "Changing a wheel" section (Y page 269).

Driving with summer tires At temperatures below 45 ‡ (+7 †), the elasticity of summer tires and therefore also traction and braking capability are reduced considerably — equip your vehicle with M+S tires. Using summer tires at very cold temperatures could cause tears to form, thereby damaging the tires permanently. Mercedes-Benz cannot accept responsibility for this type of damage.

M+S tires At temperatures below 45 ‡ (+7 †), use winter tires or all-season 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 bear the snowflake symbol i on the sidewall. 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, as these tires have been designed specifically for driving on snow. Use M+S tires of the same make and tread on all wheels to maintain safe handling characteristics. i For further information on tires, see the "Wheels and tires" section (Y page 232). G Warning M+S tires with a tread depth of less than 1/6
inch (4 mm) must be replaced. They are no longer suitable for winter operation.

Always observe the maximum permissible speed specified for the M+S tires you have installed. When you have installed the M+S tires: X Check the tire pressures (Y page 249). X Restart the tire pressure monitor

(Y page 255). G Warning If you use your spare wheel when M+S tires are fitted on the other wheels, be aware that the difference in tire characteristics may very well impair turning stability and that overall driving stability may be reduced. Adapt your driving style accordingly. Have the spare wheel replaced by a regular road wheel with an M+S tire at the nearest authorized Sprinter Dealer.

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

! 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.

! There is not enough space for snow

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

ROnly use snow chains when driving on

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

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

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

wheel-tire combinations; see the information under "Wheels and tires" in the "Technical data" section.

Rmount snow chains only in pairs and only

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

! If snow chains are mounted on the front

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

i You may wish to deactivate

ESP®(Y page 57) when pulling away with snow chains installed. This way you can allow the wheels to spin in a controlled manner, achieving an increased driving force (cutting action).

Tire pressure 249

Tire pressure Tire pressure specifications G Warning Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. 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 256). 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 tire pressure gauge. The outer appearance of a tire does not permit any reliable conclusion

250 Tire pressure

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. G Warning Should the tire pressure drop repeatedly: Rcheck the tire for foreign bodies. Rcheck whether the wheel is losing air or the

valve is leaking.

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

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

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

the Tire and Loading Information placard on your vehicle.

You will find recommended tire pressure specifications : for cold tires and for a fully loaded vehicle's Tire and Loading Information placard. The tire pressure information is applicable to all tires mounted 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 tires are cold. If the tire pressure is not set correctly, this can lead to an excessive build up of heat and a sudden loss of pressure. For more information, contact a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. i Ride comfort may be affected if the tire pressure is adjusted to the recommended value for speeds of over 100 mph (160 km/h).

Make sure that the tire pressure for normal speeds is adopted again. Additional specifications of tire pressure values for loads can also be found on the tire pressure table on the inside of the fuel filler flap. 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.

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.

If no other data is stated, the tire pressures specified on the fuel filler flap apply for all tires approved for this vehicle.

Tire pressure table for all approved tires installed at the factory (example) 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 passengers and amounts of luggage. The actual number of seats may differ from this.

Tire pressure 251

Tire pressure table with tire sizes (example) 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 263).

Tire pressure too low or too high Underinflation G Warning Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated.

Underinflated tires may: Rwear quickly and unevenly Rhave an adverse effect on fuel consumption Roverheat leading to tire defects Rhave an adverse effect on handling

characteristics

252 Tire pressure

Overinflation 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 may: Rhave an adverse effect on handling

characteristics

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

Maximum tire pressure G Warning Never exceed the maximum tire inflation pressure. Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc.

: Maximum permissible tire pressure

(example)

i The actual values for tires are vehicle-

specific and may deviate from the values in the illustration.

Always observe the recommended tire pressure for your vehicle when adjusting the tire pressure (Y page 249).

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

Check the tire pressures at least once a month. Only check and correct tire pressures when the tires are cold (Y page 249).

Checking the tire pressure 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 table 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 249).

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 these steps for the other tires.

Tire pressure monitor Important safety notes If a tire pressure monitor system is installed, the vehicle's wheels have sensors that monitor the tire pressures in all four tires. The tire pressure monitor warns you when the pressure drops in one or more of the tires. The tire pressure monitor only functions if the correct wheel electronics units are installed on all wheels.

Tire pressure 253

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 monitoring system 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

60 seconds and then remains lit constantly, the tire pressure monitor is malfunctioning. G Warning! The TPMS does not indicate a warning for wrongly selected inflation pressures. Always adjust tire inflation pressure according to the Tire and Loading Information placard or the supplemental tire inflation pressure information on the inside of the fuel filler flap. The TPMS is not able to issue a warning due to a sudden dramatic loss of pressure (e.g. tire blowout caused by a foreign object). In this case bring the vehicle to a halt by carefully applying the brakes and avoiding abrupt steering maneuvers. G Warning Each tire, including the spare (if provided), should be checked at least once a month when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the Tire and Loading Information placard on the driver’s door B- pillar or the tire inflation pressure label on the inside of the fuel filler flap. If your vehicle has tires of a different size than the size indicated on the Tire and Loading Information placard or the tire inflation pressure label, you should determine the proper tire inflation pressure for those tires. As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire

254 Tire pressure

pressure telltale when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver's responsibility to maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale. USA only: Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the tire pressure monitoring system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately one minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is lit, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.

i USA only:

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 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 harmful interference, and 2. This device must withstand any interference received, including interference that may cause undesired operation. Unauthorized modifications to the device can lead to the invalidation of the operating agreement of the device.

i Canada only:

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

2. This device must accept any interference received, including interference that may cause undesired operation. Unauthorized modifications to the device can lead to the invalidation of the operating agreement of the device.

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

2(Y page 117) 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 160).

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 over 20
minutes, the Tire pressure displayed only after driving for a few minutes message appears. i If a spare wheel is installed, 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 tire is installed is not the same as the spare tire'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 by a red rectangle. 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

Tire pressure 255

minutes of driving, and the tire pressures are displayed for the correct positions.

Restarting the tire pressure monitor G Warning It is the driver's responsibility to set the tire inflation pressure to the recommended cold tire inflation pressure. Underinflated tires affect the ability to steer or brake the vehicle. You might lose control over the vehicle.

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

Restart the tire pressure monitor after you have set the tire pressure to the value recommended for the desired driving situation (Y page 249). Only correct tire pressures on cold tires. Comply with the recommended tire pressures on the tire and loading information table 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

256 Loading the vehicle

standard display appears in the multifunction display (Y page 160).

X Press and hold the & or * button until the tire pressure of each wheel or the Tire pressure displayed only after driving for a few minutes message appears.

X Press the reset button on the instrument cluster (Y page 26). The Restart Tire Pres. Monitor? message appears in the multifunction display.

If you wish to confirm the restart: X Press the W button. The Tire Pres. 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 X 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 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 permissible number of occupants and the maximum permissible 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.

: B-pillar, driver's side

Maximum permissible gross vehicle weight rating 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.

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

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

Number of seats i The 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.

Loading the vehicle 257

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.

Determining the maximum load 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 table.

X Step 2: Determine the combined weight of

the driver and passengers that will be traveling in your vehicle.

X Step 3: Subtract the combined weight of

the driver and passengers from XXX kilograms or XXX lbs.

X Step 4: The resulting figure equals the

available amount of cargo and luggage load capacity. For example, if the "XXX" amount equals 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).

258 Loading the vehicle

X Step 5: Determine the combined weight of luggage and cargo being loaded in/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 your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle (Y page 260).

Loading the vehicle 259

Example: step 1 to 3
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 1500 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 table (Y page 256).

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 Weight of the occupants

Gross weight of all 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: 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)

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) 540 lbs (245 kg) 150 lbs (68 kg)

260 Maximum tire load

Step 3

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 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 higher the weight of all the occupants, the smaller the maximum load for luggage. Further information can be found under "trailer load/noseweight" (Y page 260).

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

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.

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 256). 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.

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

Uniform Tire Quality Grading Standards

261

on the sidewall of the tire, even though these regulations do not apply to Canada. i The actual values for tires are vehicle-

specific and may deviate from the values in the illustration.

i The actual values for tires are vehicle-

specific and may deviate from the values in the illustration.

Maximum tire load : is the maximum permissible weight for which the tire is approved. Further information on tire loads (Y page 262).

Uniform Tire Quality Grading Standards Overview of Tire Quality Grading Standards

The Uniform Tire Quality Grading Standards are U.S. government specifications. Their purpose is to provide drivers with uniform reliable information on tire performance data. Tire manufacturers have to grade tires using three performance factors: tread wear :, tire traction ;, and heat resistance =. All tires sold in North America are provided with the corresponding quality grading markings

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

Temperature

AA

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

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

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

The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent

262 Tire labeling

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 tread depth of 1/6 in (4 mm) for all four winter tires (Y page 248) 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.

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

: Uniform tire Quality Grading Standard

; DOT, Tire Identification Number

(Y page 261)

(Y page 265)

= Maximum tire load (Y page 260) ? Maximum tire pressure (Y page 252) A Manufacturer B Tire material (Y page 266) C Tire size designation, load-bearing

capacity and speed index (Y page 263)

D Load index (Y page 265)