2009 Mercedes-benz G Class Owners Manual

button may also be referred to as “learn” or “smart” button. If there is difficulty locating the transmitting button, refer to the garage door opener Operator’s Manual.

X Step 9: Press the “training” button on the

garage door opener motor head unit. The “training light” is activated. You have 30 seconds to initiate the following two steps.

X Step 10: Return to the vehicle and firmly press, hold for 2 seconds and release the

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142 Useful features

programmed signal transmitter button (;, = or ?).

X Step 11: Press, hold for 2 seconds and release same signal transmitter button a second time to complete the training process.

i Some garage door openers (or other

rolling code equipped devices) may require you to press, hold for 2 seconds and release the same signal transmitter button a third time to complete the training process.

X Step 12: Confirm the garage door

operation by pressing the programmed signal transmitter button (;, = or ?). X Step 13: To program the remaining two

signal transmitter buttons, repeat the steps above starting with step 3.

Gate operator/Canadian programming Canadian radio-frequency laws require transmitter signals to “time-out” (or quit) after several seconds of transmission which may not be long enough for the integrated signal transmitter to pick up the signal during programming. Similar to this Canadian law, some U.S. gate operators are designed to “time-out” in the same manner. If you live in Canada or if you are having difficulties programming a gate operator (regardless of where you live) by using the programming procedures, replace step 4 with the following: X Step 4: Press and hold the signal

transmitter button (;, = or ?). Do not release this button until it has been successfully trained.

X While still holding down the signal

transmitter button (;, = or ?), “cycle” your hand-held remote control button B as follows: Press and hold button B for 2 seconds, then release it for 2 seconds, and again press and hold it for 2 seconds. Repeat this sequence on the hand-held

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remote control until the frequency signal has been learned. Upon successful training, indicator lamp : will flash slowly and then rapidly after several seconds.

X Proceed with programming step 5 and

step 6 to complete.

i Upon completion of programming the

integrated remote control, make sure you retain the hand-held remote control that came with the garage door opener, gate operator or other device. You may need it for use in other vehicles, for future programming of an integrated remote control, or simply for continued use as a hand-held remote control to operate the respective device in other situations.

Reprogramming a single signal transmitter button To program a device using a signal transmitter button previously trained, follow these steps: X Switch on the ignition. X Press and hold the desired signal

transmitter button (;, = or ?). Do not release the button. Indicator lamp : will begin to flash after 20 seconds.

X Without releasing the signal transmitter

button, proceed with programming starting with step 3.

Operation of integrated remote control X Switch on the ignition. X Select and press the appropriate

integrated signal transmitter button (;, = or ?) to activate the remote controlled device. The integrated remote control transmitter continues to send the signal as long as the button is pressed – up to 20 seconds.

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143

Erasing the integrated remote control memory i If you sell your vehicle, erase the codes of

all three channels.

X Switch on the ignition. X Simultaneously press and hold outer signal

transmitter buttons ; and ?, for approximately 20 seconds, until indicator lamp : flashes rapidly. Do not hold for longer than 30 seconds. The codes of all three channels are erased.

Programming tips If you are having difficulty programming the integrated remote control, here are some helpful tips: RCheck the frequency of hand-held remote control A (typically located on the reverse side of the remote). The integrated remote control is compatible with radio-frequency devices operating between 280-390 MHz.

RPut a new battery in hand-held remote

control A. This will increase the likelihood of the hand-held remote control sending a faster and more accurate signal to the integrated remote control.

RWhile performing step 3, hold hand-held

remote control A at different lengths and angles from the signal transmitter button (;, = or ?) you are programming. Attempt varying angles at the distance of 2
to 12 inches (5 to 30 cm) away or the same angle at varying distances.

RIf another hand-held remote control is available for the same device, try the programming steps again using that other hand-held remote control. Make sure new batteries are in the hand-held remote control before beginning the procedure.

RStraighten the antenna wire from the

garage door opener assembly. This may help improve transmitting and/or receiving signals.

i Certain types of garage door openers are

incompatible with the integrated remote control. If you should experience further difficulties with programming the integrated remote control, contact an authorized Mercedes-Benz Center, or call the Mercedes-Benz Customer Assistance Center (in the USA) at 1-800-FOR-MERCedes, or Customer Service (in Canada) at 1-800-387-0100.

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

2.

interference, and 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.

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

2.

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

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144 Useful features

Floormats G Warning! Whenever you are using floormats, make sure there is enough clearance and that the floormats are securely fastened. Floormats should always be securely fastened using the fastening equipment. Before driving off, check that the floormats are securely in place and adjust them if necessary. A loose floormat could slip and hinder proper functioning of the pedals. Do not place several floormats on top of each other as this may impair pedal movement.

i To install or remove the floormat more

easily, move the driver’s seat or front passenger seat as far to the rear as possible.

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Vehicle equipment ............................ 146
The first 1000 miles (1500 km) ....... 146
At the gas station ............................. 146
Engine compartment ........................ 148
Tires and wheels ............................... 154
Winter driving ................................... 175
Driving instructions .......................... 176
Maintenance ...................................... 185
Vehicle care ....................................... 187

145

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146 At the gas station

Vehicle equipment

i This Operator’s Manual describes all

features, standard or optional, potentially available for your vehicle at the time of purchase. Please be aware that your vehicle might not be equipped with all features described in this manual.

The first 1000 miles (1500 km)

The more cautiously you treat your vehicle during the break-in period, the more satisfied you will be with its performance later on. RDrive your vehicle during the first

1 000 miles (1 500 km) at varying but moderate vehicle and engine speeds.

RDuring this period, avoid heavy loads (full

throttle driving) and excessive engine speeds (no more than 2/3 of maximum rpm in each gear).

RShift gears in a timely manner. RAvoid accelerating by kickdown. RDo not attempt to slow the vehicle down by

shifting to a lower gear using the gear selector lever.

RSelect gear ranges 3, 2 or 1 (Y page 89) only when driving at moderate speeds (for hill driving).

After 1 000 miles (1 500 km) you may gradually increase vehicle and engine speeds to the permissible maximum. ! Additional instructions for AMG vehicles: RDuring the first 1 000 miles (1 500 km),

do not exceed a speed of 85 mph (140 km/h).

RDuring this period, avoid engine speeds

above 4 500 rpm in each gear. RShift gears in a timely manner. RAvoid off-road driving during the break-in

period until the oil change in the front and rear axle at 2000 miles (3000 km)

has been performed. Please refer to Maintenance Booklet.

All of the above instructions, as may apply to your vehicle type, also apply when driving the first 1 000 miles (1 500 km) after the engine, the transfer case, the front differential or the rear differential has been replaced. i Always obey applicable speed limits.

At the gas station Refueling G Warning! Gasoline is highly flammable and poisonous. It burns violently and can cause serious personal injury. Never allow sparks, flames or smoking materials near gasoline! Turn off the engine before refueling. Whenever you are around gasoline, avoid inhaling fumes and any skin or clothing contact. Extinguish all smoking materials. Direct skin contact with fuels and the inhalation of fuel vapors are damaging your health. G Warning! Overfilling of the fuel tank may create pressure in the system which could cause a gas discharge. This could cause the gas to spray back out when removing the fuel pump nozzle, which could cause personal injury.

! Never refuel vehicles with gasoline engine

with diesel fuel. Even small amounts of diesel fuel will damage the fuel system and engine. Damage resulting from the use of non-approved fuels or fuel additives or resulting from mixing gasoline with diesel fuel is not covered by the Mercedes-Benz Limited Warranty.

! If you have accidentally filled the tank

with incorrect or non-approved fuel, do not

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At the gas station 147

switch on the ignition. Otherwise the incorrect or non-approved fuel will get into the fuel lines. The fuel system must be drained completely. Contact an authorized Mercedes-Benz Center to have the fuel system drained completely.

! To prevent damage to the catalytic

converters, only use premium unleaded gasoline in this vehicle. Any noticeable irregularities in engine operation should be repaired promptly. Otherwise, excessive unburned fuel may reach the catalytic converter, causing it to overheat and potentially start a fire.

i Only use premium unleaded gasoline with

a minimum Posted Octane Rating of 91
(average of 96 RON/86 MON). Information on gasoline quality can normally be found on the fuel pump. Please contact gas station personnel in case labels on the pump cannot be found. For more information on gasoline, see “Premium unleaded gasoline” (Y page 254), see “Fuel requirements” (Y page 255), or contact an authorized Mercedes-Benz Center, or visit www.mbusa.com (USA only).

The fuel filler flap is located on the right-hand side of the vehicle towards the rear. Locking/unlocking the vehicle with the SmartKey automatically locks/unlocks the fuel filler flap. i In case the central locking system does not release the fuel filler flap, see “Fuel filler flap” (Y page 223).

X Turn off the engine. i Leaving the engine running and the fuel filler cap open can cause the yellow fuel tank reserve warning lamp to flash and the malfunction indicator lamp = (USA only) or ; (Canada only) to illuminate. For more information, see also “Practical hints” (Y page 218).

X Remove the SmartKey from the starter

switch.

X Opening: Press fuel filler flap : at the

point indicated by the arrow.

X Turn fuel filler cap ; counterclockwise. X Take off fuel filler cap ;. ! The fuel filler cap is tethered to the fuel filler neck. Do not drop the cap. It could damage the vehicle paint finish.

X Place fuel filler cap ; in direction of arrow

into the holder.

X Fully insert filler nozzle unit and refuel. X Only fill your tank until the filler nozzle unit

cuts out – do not top off or overfill.

! When refueling the vehicle, make certain that no gasoline comes into contact with the rear side marker to prevent damaging the lens.

X Closing: Turn fuel filler cap ; clockwise

until it audibly engages.

i Make sure to close the fuel filler flap before locking your vehicle as the flap

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148 Engine compartment

locking pin prevents closing after you have locked the vehicle.

X Close fuel filler flap :.

Check regularly and before a long trip For information on quantities and requirements of operating agents, see “Fuels, coolants, lubricants, etc.” (Y page 252). Check the following: REngine oil level (Y page 149) RTire inflation pressure (Y page 156) RCoolant level (Y page 152) RVehicle lighting (Y page 226) RWasher system and headlamp cleaning

system (Y page 153)

RBrake fluid (Y page 152)

Engine compartment Hood G Warning! Do not pull the release lever while the vehicle is in motion. Otherwise the hood could be forced open by passing air flow. This could cause the hood to come loose and injure you and/or others.

Opening G Warning! If you see flames or smoke coming from the engine compartment, or if the coolant temperature gauge indicates that the engine is overheated, do not open the hood. Move away from vehicle and do not open the hood until the engine has cooled. If necessary, call the fire department.

G Warning! You could be injured when the hood is open – even when the engine is turned off. Parts of the engine can become very hot. To prevent burns, let the engine cool completely before touching any components on the vehicle. Comply with all relevant safety precautions. G Warning! To help prevent personal injury, stay clear of moving parts when the hood is open and the engine is running. The radiator fan may continue to run for approximately 30 seconds or may even restart after the engine has been turned off. Stay clear of fan blades. G Warning! The engine is equipped with a transistorized ignition system. Because of the high voltage it is dangerous to touch any components (ignition coils, spark plug sockets, diagnostic socket) of the ignition system Rwith the engine running Rwhile starting the engine Rwhen the ignition is switched on and the

engine is turned manually

X Pull hood lock release lever :.

The hood is unlocked.

! To avoid damage to the windshield wipers or hood, never open the hood if the wiper

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arms are folded forward away from the windshield.

X Lift hood up slightly. X Push safety hook ; in direction of arrow. X Pull up on hood.

The hood will be automatically held open at shoulder height by gas-filled struts.

Closing G Warning! When closing the hood, use extreme caution not to catch hands or fingers. Be careful that you do not close the hood on anyone. Make sure the hood is securely engaged before driving off. Do not continue driving if the hood can no longer engage after an accident, for example. The hood could otherwise come loose while the vehicle is in motion and injure you and/or others.

X Let the hood drop from a height of

approximately 1 ft (30 cm).

X Check to make sure the hood is fully

closed. If you can raise the hood at a point above the turn signals to the left and right of the hood, then it is not properly closed. Open it again and let it drop with somewhat greater force.

Engine compartment

149

Engine oil The amount of oil your engine needs will depend on a number of factors, including driving style. Increased oil consumption can occur when the vehicle is new or the vehicle is driven frequently at higher engine speeds. Engine oil consumption checks should only be made after the vehicle break-in period. ! Do not use any special lubricant additives, as these may damage the drive assemblies. Using special additives not approved by Mercedes-Benz may cause damage not covered by the Mercedes-Benz Limited Warranty. For further information contact an authorized Mercedes-Benz Center.

Notes on checking engine oil level When checking the oil level the vehicle must be parked on level ground. G 550: The vehicle must have been stationary for at least 5 minutes with the engine turned off. G 55 AMG: With the engine at operating temperature, the vehicle must have been stationary for at least 5 minutes with the engine turned off. With the engine not at operating temperature, the vehicle must have been stationary for at least 30 minutes with the engine turned off.

Checking engine oil level with the oil dipstick On the G 550, you can check the engine oil level with the oil dipstick. X Open the hood (Y page 148).

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150 Engine compartment

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

guide tube.

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

i The filling quantity between the upper and

lower marks on the oil dipstick is approximately 2.1 US qt. (2.0 l).

X If necessary, add engine oil. For more information on engine oil, see “Fuels, coolants, lubricants etc.” (Y page 252). For information on messages in the multifunction display concerning engine oil, see the “Practical hints” section (Y page 207).

Checking engine oil level with the control system On the G 55 AMG, you can check the engine oil level with the control system. X Switch on the ignition.

The standard display appears in the multifunction display (Y page 99). X Press button * or & on the

multifunction steering wheel repeatedly until the following message appears in the multifunction display:

One of the following messages will subsequently appear in the multifunction display: REngine Oil

Level OK RAdd

1.0 qt to reach maximum oil level. (Canada: 1.0 liter)

RAdd

1.5 qts to reach maximum oil level. (Canada: 1.5 liters)

RAdd

2.0 qts to reach maximum oil level. (Canada: 2.0 liters)

i If you want to interrupt the checking

procedure, press button * or & on the multifunction steering wheel.

X If necessary, add engine oil. For more information on engine oil, see “Fuels, coolants, lubricants etc.” (Y page 252).

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Other display messages If the ignition is not switched on, the following message appears in the multifunction display: Switch ignition on to check engine oil level. X Switch on the ignition. If you see the message: Observe Waiting Time X If the engine is at operating temperature,

wait 5 minutes before repeating check procedure.

X If the engine is not at operating

temperature yet, you must wait 30 minutes before checking oil.

If you see the message: Engine Oil Level Not With Engine On X Turn off the engine. X If the engine is at operating temperature,

wait 5 minutes before checking oil.

X If the engine is not at operating

temperature yet, you must wait 30 minutes before checking oil.

If there is excess engine oil with the engine at normal operating temperature, the following message appears in the multifunction display: Engine Oil Reduce Oil Level X Have excess oil siphoned or drained off.

Contact an authorized Mercedes-Benz Center.

! Excess oil must be siphoned or drained off. It could cause damage to the engine and emission control system not covered by the Mercedes-Benz Limited Warranty.

Engine compartment

151

For information on messages in the multifunction display concerning engine oil, see the “Practical hints” section (Y page 207).

Adding engine oil ! Only use approved engine oils and oil

filters required for vehicles with Maintenance System. For a listing of approved engine oils and oil filters, contact an authorized Mercedes-Benz Center or visit www.mbusa.com (USA only). Using engine oils and oil filters of specification other than those expressly required for the Maintenance System, or changing of oil and oil filter at change intervals longer than those called for by the Maintenance System will result in engine or emission control system damage not covered by the Mercedes-Benz Limited Warranty.

G 550

G 55 AMG

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152 Engine compartment

X Unscrew filler cap : from filler neck. X Add engine oil as required. Be careful not

to overfill with oil.

Be careful not to spill any oil when adding. Avoid environmental damage caused by oil entering the ground or water. ! Excess oil must be siphoned or drained off. It could cause damage to the engine and emission control system not covered by the Mercedes-Benz Limited Warranty.

X Screw filler cap : back on filler neck. For more information on engine oil, see the “Technical data” section (Y page 252) and (Y page 253).

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

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

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

Coolant level The engine coolant is a mixture of water and anticorrosion/antifreeze. When checking the coolant level, the vehicle must be parked on level ground, and the coolant temperature must be below 158‡ (70†). G Warning! In order to avoid any potentially serious burns: RUse extreme caution when opening the hood if there are any signs of steam or coolant leaking from the cooling system, or if the coolant temperature gauge indicates that the coolant is overheated.

RDo not remove pressure cap on coolant reservoir if coolant temperature is above 158‡ (70†). Allow engine to cool down before removing cap. The coolant reservoir contains hot fluid and is under pressure.

RUsing a rag, slowly open the cap

approximately 1/2 turn to relieve excess pressure. If opened immediately, scalding hot fluid and steam will be blown out under pressure.

RDo not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts.

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

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153

X Using a rag, turn cap : slowly

approximately 1/2 turn counterclockwise to release any excess pressure.

X Continue turning cap : counterclockwise

and remove it. The coolant level is correct if the level Rfor cold coolant: reaches the top of the

mark (plastic bridge) in coolant expansion tank ;

Rfor warm coolant: is approximately 0.6 in

(1.5 cm) higher

X Add coolant as required. X Attach and tighten cap :. For more information on coolant, see the “Technical data” section (Y page 253) and (Y page 255).

Washer system and headlamp cleaning system G Warning! Washer solvent/antifreeze is highly flammable. Do not spill washer solvent/ antifreeze on hot engine parts, because it may ignite and burn. You could be seriously burned.

! Always use washer solvent/antifreeze

where temperatures may fall below freezing point. Failure to do so could result in damage to the washer system/fluid reservoir.

! Only use washer fluid which is suitable for plastic lenses. Improper washer fluid can damage the plastic lenses of the headlamps.

! Do not use distilled or deionized water in the washer fluid reservoir. Otherwise, the washer fluid level sensor could be damaged.

Fluid for the washer system, rear window washer system, and the headlamp cleaning system is supplied from the washer fluid reservoir. During all seasons, add MB Windshield Washer Concentrate “MB SummerFit” to water. Premix the washer fluid in a suitable container. X Opening washer fluid reservoir: Pull tab

of cap : upwards.

X Refill the washer fluid reservoir with MB

Windshield Washer Concentrate “MB SummerFit” and water (or commercially available premixed washer solvent/ antifreeze, depending on ambient temperatures) (Y page 257).

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

For more information, see “Washer system and headlamp cleaning system” (Y page 253).

Transmission fluid level The transmission fluid level does not need to be checked. If you notice transmission fluid loss or gearshifting malfunctions, have an authorized Mercedes-Benz Center check the transmission.

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154 Tires and wheels

Tires and wheels Safety notes Contact an authorized Mercedes-Benz Center for information on tested and recommended rims and tires for summer and winter operation. They can also offer advice concerning tire service and purchase. G Warning! Replace rims or tires with the same designation, manufacturer and type as shown on the original part. For further information contact an authorized Mercedes-Benz Center. If incorrectly sized rims and tires are mounted, the wheel brakes or suspension components can be damaged. Also, the operating clearance of the wheels and the tires may no longer be correct. G Warning! Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them. When replacing rims, only use genuine Mercedes-Benz wheel bolts specified for the particular rim type. Failure to do so can result in the bolts loosening and possibly an accident. Retreaded tires are not tested or recommended by Mercedes-Benz, since previous damage cannot always be recognized on retreads. The operating safety of the vehicle cannot be assured when such tires are used. G Warning! If you feel a sudden significant vibration or ride disturbance, or you suspect that possible damage to your vehicle has occurred, you should turn on the hazard warning flashers, carefully slow down, and drive with caution to an area which is a safe distance from the road. Inspect the tires and the vehicle underbody for possible damage. If the vehicle or tires

appear unsafe, have the vehicle towed to the nearest authorized Mercedes-Benz Center or tire dealer for repairs. G Warning! Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You could lose control of the vehicle. Continued driving with a flat tire or driving at high speed with a flat tire will cause excessive heat build- up and possibly a fire.

Important guidelines ROnly use sets of tires and rims of the same

type and make.

RTires must be of the correct size for the rim. RBreak in new tires for approximately

60 miles (100 km) at moderate speeds.

RRegularly check the tires and rims for

damage. Dented or bent rims can cause tire inflation pressure loss and damage to the tire beads.

RIf vehicle is heavily loaded, check tire

inflation pressure and correct as required. RDo not allow your tires to wear down too far. Adhesion properties on wet roads are sharply reduced at tread depths of less than 1/8 in (3 mm).

RWhen replacing individual tires, you should mount new tires on the front wheels first (on vehicles with same-sized wheels all around).

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

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Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Do not overload the tires by exceeding the specified load limit as indicated on the Tire and Loading Information placard on the driver’s door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure. Your vehicle is equipped with the Tire and Loading Information placard located on the driver’s door B-pillar (Y page 161). The tire inflation pressure should be checked regularly. Only adjust the tire inflation pressure on cold tires. The tires can be considered cold if the vehicle has been parked for at least 3 hours or driven less than 1 mile (1.6 km). Depending on the ambient temperature, the driving speed and the tire load, the tire temperature changes. When the tire temperature changes by 18‡ (10†), the tire inflation pressure will change by approximately 1.5 psi (0.1 bar). Keep this in mind when checking tire inflation pressure on warm tires and adjust the tire pressure only if the tire inflation pressure is too low for the current operating conditions. If you check the tire inflation pressure when the tires are warm, the reading will be higher than the cold reading. This is normal. Do not let air out to match the specified cold tire inflation pressure. Otherwise, the tire will be underinflated. Follow recommended cold tire inflation pressures listed on Tire and Loading Information placard on the driver’s door B-pillar. Keeping the tires properly inflated provides the best handling, tread life and riding comfort.

Tires and wheels

155

In addition to the Tire and Loading Information placard on the driver’s door B-pillar, also consult the tire inflation pressure label (if available) on the inside of the filler flap for any additional information pertaining to special driving situations. For more information, see “Important notes on tire inflation pressure” (Y page 155). i Data shown on Tire and Loading

Information placard example are for illustration purposes only. Tire data are specific to each vehicle and may vary from data shown in the following illustration. Refer to Tire and Loading Information placard on vehicle for actual data specific to your vehicle.

The Tire and Loading Information placard lists the recommended cold tire inflation pressures : for maximum loaded vehicle weight. The tire inflation pressures listed apply to the tires installed as original equipment.

Important notes on tire inflation pressure G Warning! If the tire inflation pressure drops repeatedly, check the tires for punctures from foreign objects and/or whether air is leaking from the valves or from around the rim. Tire temperature and tire inflation pressure are also increased while driving, depending on the driving speed and the tire load.

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156 Tires and wheels

If you will be driving your vehicle at high speeds of 100 mph (160 km/h) or higher, where it is legal and conditions allow, consult the tire inflation pressure label on the inside of the fuel filler flap (if available) on how to adjust the cold tire inflation pressure. If you do not adjust the tire inflation pressure, excessive heat can build up and result in sudden tire failure. If your vehicle is not equipped with the tire inflation pressure label on the inside of the fuel filler flap, contact an authorized Mercedes-Benz Center for proper tire inflation pressure. i Driving comfort may be reduced when the

tire inflation pressure is adjusted to the value for speeds above 100 mph (160 km/h) as specified on the tire inflation pressure label located on the inside of the fuel filler flap.

Make sure to readjust the tire inflation pressure for normal driving speeds. Some vehicles may have supplemental tire inflation pressure information for vehicle loads less than the maximum loaded vehicle condition. If such information is provided, it can be found on the tire inflation pressure label located on the inside of the fuel filler flap.

Potential problems associated with underinflated and overinflated tires Underinflated tires G Warning! Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Underinflated tires can Rcause excessive and uneven tire wear Radversely affect fuel economy

Rlead to tire failure from being overheated Radversely affect handling characteristics

Overinflated tires G Warning! Follow recommended tire inflation pressures. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Overinflated tires can Radversely affect handling characteristics Rcause uneven tire wear Rbe more prone to damage from road

hazards

Radversely affect ride comfort Rincrease stopping distance

Checking tire inflation pressure Safety notes G Warning! Follow recommended tire inflation pressures. 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

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can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure. Check the tire inflation pressure at least every other week. Check and adjust the tire inflation pressure when the tires are cold (Y page 155).

Checking tire inflation pressure manually Follow the steps below to achieve correct tire inflation pressure: X Remove the cap from the valve on one tire. X Firmly press a tire gauge onto the valve. X Read the tire inflation pressure on the tire

gauge and check against the recommended tire inflation pressure on the Tire and Loading Information placard on the driver’s door B-pillar (Y page 161). If necessary, add air to achieve the recommended tire inflation pressure.

X If you have overfilled the tire, release tire

inflation pressure by pushing the metal stem of the valve with e.g. a tip of a pen. Then recheck the tire inflation pressure with the tire gauge. X Install the valve cap. X Repeat this procedure for each tire.

Advanced Tire Pressure Monitoring System (Advanced TPMS) Your vehicle is equipped with the Advanced Tire Pressure Monitoring System (Advanced TPMS). It measures the tire inflation pressure in the vehicle’s tires and issue warnings in case of pressure loss in one or more of the tires.

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The TPMS is equipped with a combination low tire pressure/ TPMS malfunction telltale (USA) or a low tire pressure telltale (Canada) in the instrument cluster. Depending on how the telltale illuminates, it indicates a low tire pressure condition or a malfunction in the TPMS system itself: RIf the telltale illuminates continuously, one

or more of your tires is significantly underinflated. There is no malfunction in the TPMS.

RUSA only: If the telltale flashes for 60

seconds and then stays illuminated, the TPMS system itself is not operating properly.

The TPMS only functions on wheels that are equipped with the proper electronic sensors. 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, if available, on 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 every other week 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, if available, 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 vehicle placard or the tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.

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If a condition causing the TPMS to malfunction develops, it may take up to 10 minutes for the system to signal a malfunction using the TPMS telltale flashing and illumination sequence. The telltale extinguishes after a few minutes driving if the malfunction has been corrected.

Tire pressure inquiries are made using the multifunction display. The current tire inflation pressure for each tire appears in the multifunction display after a few minutes of driving. i Possible differences between the

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

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

multifunction steering wheel repeatedly until the standard display appears in the multifunction display (Y page 99).

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

As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale. USA only: Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately 1 minute and then remain continuously illuminated. This sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is 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 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:

When the vehicle has been parked for longer than 20 minutes, the message Tire

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pressure displayed only after driving for a few minutes. appears in the multifunction display. i With a spare wheel mounted, the system may still indicate the tire inflation pressure of the removed road wheel for some minutes. If this happens, keep in mind that the indicated value where the spare wheel is mounted does not reflect the actual spare tire inflation pressure.

i 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

2.

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

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

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

2.

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

Tire inflation pressure warnings If the system detects a significant loss of tire inflation pressure in one or more than one tire, a message appears in the multifunction display. In addition, an acoustic warning sounds and the low tire pressure telltale in the instrument cluster comes on.

The respective tire is indicated by a red rectangle. Restarting Advanced TPMS G Warning! It is the driver’s responsibility to set the tire inflation pressure to the recommended cold tire inflation pressure. Underinflated tires affect the ability to steer or brake the vehicle. You might lose control over the vehicle. When you restart the TPMS, the system sets new reference values for each tire. The TPMS must be restarted when you have adjusted the tire inflation pressure to a new level (e.g. because of different load or driving conditions). The TPMS is then recalibrated to the current tire inflation pressures. i Canada only:

The TPMS usually recognizes tire pressure adjustments and sets new reference values automatically. You can, however, restart the TPMS manually as described.

Restart the TPMS after adjusting the tire inflation pressure to the inflation pressure recommended for the vehicle operating condition. Tire pressure should only be adjusted on cold tires. Observe the recommended tire inflation pressure on the Tire and Loading Information placard on the driver’s door B-pillar. Some vehicles may have supplemental tire pressure information for driving at high speeds or for vehicle loads less than the maximum loaded vehicle condition. If such information is provided, it can be found on the inside of the fuel filler flap.

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is mounted does not reflect the actual spare tire inflation pressure.

Maximum tire inflation pressure G Warning! Never exceed the maximum tire inflation pressure. Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely 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.

160 Tires and wheels

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

X Press the reset button (Y page 95).

The following message will appear in the multifunction display: Restart Tire Pres. Monitor?

X If you wish to confirm: Press button

W. The following message will appear in the multifunction display: Tire Pres. Monitor Restarted After driving a few minutes the system verifies that the current tire inflation pressures are within the system’s specified range. Afterwards the current tire inflation pressures are accepted as reference values and then monitored.

X If you wish to cancel: Press button

X.

i When the wheel positions have been

changed, the air pressure of a tire may be displayed for the wrong position temporarily. After driving for a few minutes, the air pressure will be shown for the correct position.

i With a spare wheel mounted, the system may still indicate the tire inflation pressure of the removed road wheel for some minutes. If this happens, keep in mind that the indicated value where the spare wheel

i For illustration purposes only. Actual data

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

This is the maximum permissible tire inflation pressure : for the tire. Always follow the recommended tire inflation pressure (Y page 154) for proper tire inflation.

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Loading the vehicle Two labels on your vehicle show how much weight it may properly carry. (1) The Tire and Loading Information placard

can be found on the driver’s door B-pillar. This placard tells you important information about the number of people that can be in the vehicle and the total weight that can be carried in the vehicle. It also contains information on the proper size and recommended tire inflation pressures for the original equipment tires on your vehicle.

(2) The certification label, also found on the driver’s door B-pillar. It tells you about the gross weight capacity of your vehicle, called the Gross Vehicle Weight Rating (GVWR). The GVWR includes the weight of the vehicle, all occupants, fuel and cargo. The certification label also tells you about the front and rear axle weight capacity, called the Gross Axle Weight Rating (GAWR). The GAWR is the total allowable weight that can be carried by a single axle (front or rear). Never exceed the GVWR or GAWR for either the front axle or rear axle.

: Driver’s door B-pillar Following is a discussion on how to work with the information contained on the Tire and Loading Information placard with regards to loading your vehicle.

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Tire and Loading Information G Warning! Do not overload the tires by exceeding the specified load limit as indicated on the Tire and Loading Information placard on the driver’s door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure.

Tire and Loading Information placard i Data shown on Tire and Loading

Information placard example are for illustration purposes only. Load limit data are specific to each vehicle and may vary from data shown in the following illustration. Refer to Tire and Loading Information placard on vehicle for actual data specific to your vehicle.

The Tire and Loading Information placard showing load limit information : is located on the driver’s door B-pillar (Y page 161). X Locate the statement “The combined weight of occupants and cargo should never exceed XXX kilograms or XXX lbs.” on the Tire and Loading Information placard.

The combined weight of all occupants, cargo/luggage and trailer tongue load (if applicable) should never exceed the weight referenced in that statement.

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X Step 4: The resulting figure equals the

available amount of cargo and luggage load capacity. For example, if the “XXX” amount equals 1 400 lbs and there will be five 150 lbs passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lbs (1 400 - 750 (5 x 150) = 650 lbs).

X Step 5: Determine the combined weight of

luggage and cargo being loaded on the vehicle. That weight may not safely exceed the available cargo and luggage load capacity calculated in step 4.

X Step 6 (if applicable): If your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle (Y page 164).

The following table shows examples on how to calculate total and cargo load capacities with varying seating configurations and number and size of occupants. The following examples use a load limit of 1 500 lbs. This is for illustration purposes only. Make sure you are using the actual load limit for your vehicle stated on the vehicle’s Tire and Loading Information placard (Y page 162).

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Seating capacity

The seating capacity gives you important information on the number of occupants that can be in the vehicle. Observe front and rear seating capacity. The Tire and Loading Information placard showing seating capacity : is located on the driver’s door B-pillar (Y page 161). i Data shown on Tire and Loading

Information placard example are for illustration purposes only. Seating capacity data are specific to each vehicle and may vary from data shown in the following illustration. Refer to Tire and Loading Information placard on vehicle for actual data specific to your vehicle.

Steps for determining correct load limit The following steps have been developed as required of all manufacturers under Title 49, Code of U.S. Federal Regulations, Part 575
pursuant to the “National Traffic and Motor Vehicle Safety Act of 1966”. X Step 1: Locate the statement “The

combined weight of occupants and cargo should never exceed XXX kg or XXX lbs.” on your vehicle’s Tire and Loading Information placard.

X Step 2: Determine the combined weight of the driver and passengers that will be riding in your vehicle.

X Step 3: Subtract the combined weight of

the driver and passengers from XXX kilograms or XXX lbs.

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Example 1
1 500 lbs

Example 2
1 500 lbs

Example 3
1 500 lbs

Example 1

Example 2

Example 3

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

front: 1

Occupant 1: 150 lbs

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

540 lbs

150 lbs

Example 1
1 500 lbs - 750 lbs = 750 lbs

Example 2
1 500 lbs - 540 lbs = 960 lbs

Example 3
1 500 lbs - 150 lbs = 1 350 lbs

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

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

Occupants weight

Combined weight of all occupants

Step 3 Available cargo/

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

The higher the weight of all occupants, the less cargo and luggage load capacity is available. For more information, see “Trailer tongue load” (Y page 164).

Certification label Even after careful determination of the combined weight of all occupants, cargo and the trailer tongue load (if applicable) (Y page 164) as to not exceed the permissible load limit, you must make sure your vehicle never exceeds the Gross Vehicle

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Weight Rating (GVWR) and the Gross Axle Weight Rating (GAWR) for either the front or rear axle. You can obtain the GVWR and GAWR from the certification label. The certification label can be found on the driver’s door B-pillar, see the “Technical data” section (Y page 246). Gross Vehicle Weight Rating (GVWR): The total weight of the vehicle, all occupants, all cargo, and the trailer tongue load (if applicable) must never exceed the GVWR. Gross Axle Weight Rating (GAWR): The total allowable weight that can be carried by a single axle (front or rear). To assure that your vehicle does not exceed the maximum permissible weight limits (GVWR and GAWR for front and rear axle), have the loaded vehicle (including driver, passengers and all cargo and, if applicable, trailer fully loaded) weighed on a suitable commercial scale.

Trailer tongue load The tongue load of any trailer is an important weight to measure because it affects the load you can carry in your vehicle. If a trailer is towed, the tongue load must be added to the weight of all occupants riding and any cargo you are carrying in the vehicle. The tongue load typically is 10% of the trailer weight and everything loaded in it. If an approved Mercedes-Benz trailer hitch is available for your G-Class vehicle model, consult the instructions included in the trailer hitch kit for vehicle towing capacity, permissible gross trailer weight, trailer tongue weight rating, and instructions on loading and towing a trailer.

Maximum tire load G Warning! Do not overload the tires by exceeding the specified load limit as indicated on the Tire and Loading Information placard on the driver’s door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure.

i For illustration purposes only. Actual data

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

The maximum tire load rating : is the maximum weight the tires are designed to support. For more information on tire load rating, see (Y page 169). For information on calculating total and cargo load capacities, see (Y page 162).

Direction of rotation Unidirectional tires offer added advantages, such as better hydroplaning performance. To benefit, however, you must make sure the tires rotate in the direction specified. An arrow on the sidewall indicates the intended direction of rotation of the tire. Spare wheels may be mounted against the direction of rotation (spinning) even with a unidirectional tire for temporary use only until

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the regular drive wheel has been repaired or replaced. Always observe and follow applicable temporary use restrictions and speed limitations indicated on the spare wheel.

Tire care and maintenance G Warning! Regularly check the tires for damage. Damaged tires can cause tire inflation pressure loss. As a result, you could lose control of your vehicle. Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them. Check the tire inflation pressure at least every other week. For more information on checking tire inflation pressure, see “Recommended tire inflation pressure” (Y page 154).

Tire inspection Every time you check the tire inflation pressure, you should also inspect your tires for the following: Rexcessive treadwear (Y page 165) Rcord or fabric showing through the tire’s

rubber

Rbumps, bulges, cuts, cracks or splits in the

tread or side of the tire

Replace the tire if you find any of the above conditions. Make sure you also inspect the spare tire periodically for condition and inflation. Spare tires will age and become worn over time even if never used, and thus should be inspected and replaced when necessary.

Life of tire G Warning! Tires and spare tire should be replaced after 6 years, regardless of the remaining tread. The service life of a tire is dependent upon varying factors including but not limited to: RDriving style RTire inflation pressure RDistance driven

Tread depth G Warning! Although the applicable federal motor vehicle safety laws consider a tire to be worn when the treadwear indicators (TWI) become visible at approximately 1/16 in (1.6 mm), we recommend that you do not allow your tires to wear down to that level. As tread depth approaches 1/8 in (3 mm), the adhesion properties on a wet road are sharply reduced. Depending upon the weather and/or road surface (conditions), the tire traction varies widely. Do not allow your tires to wear down too far. Adhesion properties on wet roads are sharply reduced at tread depths of less than 1/8 in (3 mm). Treadwear indicators (TWI) are required by law. These indicators are located in six places on the tread circumference and become visible at a tread depth of approximately 1/16 in (1.6 mm), at which point the tire is considered worn and should be replaced. The recommended minimum tire tread depth for summer tires is 1/8 in (3 mm). The recommended minimum tire tread depth for winter tires is 1/6 in (4 mm).

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

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

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

Temperature

Traction AA

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

Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified U.S. Government test course. For example, a tire graded 150 would wear one and one-half (1 1/2) times as well on the government course as a tire graded 100. The relative performance of tires depends upon the actual conditions of their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and differences in road characteristics and climate.

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