2011 Mercedes-benz GL Class Owners Manual

purchase. Country-specific differences are possible. Bear in mind that your vehicle may not feature all functions described here. This also refers to safety-related systems and functions.

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Where will I find...?

309

Possible causes/consequences and M Solutions G Risk of explosion or fire The fuel line or the fuel tank is faulty. X Immediately turn the key to position 0(Y page 147)in the ignition

lock and remove it.

X Do not restart the engine under any circumstances. X Consult a qualified specialist workshop.

X Consult a qualified specialist workshop.

X Start the engine as normal.

Your vehicle has been involved in a rear-end collision. X Reset the triggered NECK-PRO head restraints/NECK-PRO

luxury head restraints (Y page 52).

After an accident

Problem Fuel is leaking from the vehicle.

You are unable to determine the extent of the damage.

You cannot detect any damage.

The NECK-PRO head restraints/NECK-PRO luxury head restraints on the driver's and front-passenger seat have been triggered.

Where will I find...? First-aid kit X Open the tailgate.

X To open the side trim panel: turn rotary knob : 90° in the direction of the arrow and open side trim panel ;.

X To remove the first-aid kit: remove first-

aid kit :.

i Check the expiration date on the first-aid

kit at least once a year. Replace the contents if necessary, and replace missing contents.

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Vehicle tool kit Notes The vehicle tool kit can be found in the stowage well under the cargo compartment floor. i Vehicles without a spare wheel are not

equipped at the factory with the tools needed to change a wheel, e.g. a jack or lug wrench. Some tools for changing a wheel are specific to the vehicle. To obtain tools approved for your vehicle, visit a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.

Folding the cargo compartment floor up

X Press release handle ; in the direction of

the arrow.

X Lift cargo compartment floor : up by

release handle ;.

X Fold out hook = on the underside of the

cargo compartment floor.

X Attach hook = to upper seal ? in the

cargo compartment.

Vehicles with a TIREFIT kit X Lift the cargo compartment floor up

(Y page 310).

: Jack ; Towing eye = Ratchet ring spanner ? Alignment bolt A Fuse allocation chart B Folding wheel chock C Lug wrench

Vehicles with a "Minispare" emergency spare wheel X Lift the cargo compartment floor up

(Y page 310).

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X Turn emergency spare wheel retainer :

counter-clockwise and remove it.

X Remove insert =. X Remove "Minispare" emergency spare

wheel ;.

For further information on changing a wheel and mounting the spare wheel, see (Y page 316).

Flat tire Preparing the vehicle Your vehicle could be equipped with a "Minispare" emergency spare wheel or the MOExtended run-flat system(Y page 321). i Vehicle preparation is not necessary on

vehicles with the MOExtended run-flat system.

i Vehicles featuring the MOExtended run-

flat system are not equipped with the TIREFIT kit at the factory. It is therefore recommended that you additionally equip your vehicle with the TIREFIT kit if you mount tires that do not feature run-flat properties, e.g. winter tires. You can obtain a TIREFIT kit from an authorized Mercedes- Benz Center, for example.

X Make sure that highway level is

selected41(Y page 189).

X Stop the vehicle as far away as possible

from traffic on solid, non-slippery and level ground.

: Alignment bolt ; Towing eye = Lug wrench ? Ratchet ring spanner A Velcro fastener B Jack C Wheel bolts D Folding wheel chock E Fuse allocation chart F Stowage well

"Minispare" emergency spare wheel The "Minispare" emergency spare wheel can be found in the stowage well under the cargo compartment floor. X Lift the trunk floor up (Y page 310). X Take out the jack.

X Switch on the hazard warning lamps. X Firmly depress the parking brake. X Bring the front wheels into the straight-

ahead position.

X Move the DIRECT SELECT lever to P. X Switch off the engine.

41 Vehicles with air suspension.

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X Vehicles without KEYLESS-GO: remove

the key from the ignition lock.

X Vehicles with KEYLESS-GO: open the

driver's door. The on-board electronics have status 0, which is the same as the key having been removed.

X Vehicles with KEYLESS-GO: remove the Start/Stop button from the ignition lock (Y page 147).

X All occupants must get out of the vehicle. Make sure that they are not endangered as they get out of the vehicle.

X Make sure that no one is near the danger

area whilst a wheel is being changed. Anyone who is not directly assisting in the wheel change should, for example, stand behind the barrier.

X Get out of the vehicle. Pay attention to

traffic conditions when doing so.

X Close the driver's door. i Only operate the electric air pump using the socket in the footwell of the 2nd row of seats (Y page 281), even if the ignition is turned off. An emergency cut-off ensures that the on- board voltage does not drop too low. If the on-board voltage is too low, power to the sockets is automatically cut-off. This ensures that there is sufficient power to start the engine.

TIREFIT kit Using the TIREFIT kit You can use the TIREFIT kit to seal small punctures, particularly those in the tire tread. You can use TIREFIT at outside temperatures down to -4 ‡ (-20 †). G Warning TIREFIT is a limited repair device. TIREFIT cannot be used for cuts or punctures larger than approximately 0.16 in (4 mm) and tire

damage caused by driving with extremely low tire inflation pressure, or on a flat tire, or a damaged wheel. Do not drive the vehicle under such circumstances. Contact the nearest authorized Mercedes- Benz Center for assistance or call roadside assistance.

X Do not remove any foreign objects which have penetrated the tire, e.g. screws or nails.

X Remove the TIREFIT kit, the accompanying "max. 80 km/h" sticker and the electric air pump from the stowage well underneath the trunk floor (Y page 310).

X Affix part : of the sticker within the

driver's field of vision.

X Affix part ; of the sticker near the valve

on the wheel with the defective tire. G Warning! Take care not to allow the contents of TIREFIT to come in contact with hair, eyes or clothing. RIf TIREFIT comes into contact with your

eyes or skin, immediately rinse thoroughly with clean water.

RChange out of clothing which has come into

contact with TIREFIT immediately.

RIn case of allergic reaction or rash, consult

a physician immediately.

Keep TIREFIT away from children.

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RIf TIREFIT is swallowed, immediately rinse your mouth out thoroughly with water and drink plenty of water.

RDo not induce vomiting. Consult a doctor

immediately.

RDo not inhale TIREFIT fumes.

i If TIREFIT leaks out, allow it to dry. It can

then be removed like a layer of film. If you get TIREFIT on your clothing, have it cleaned as soon as possible with perchloroethylene. G Warning! Comply with the manufacturer's safety instructions on the sticker on the electric air pump.

Your vehicle is provided with one of two different electric air pumps: RVersion 1: the hose with the pressure gauge and the cable are behind a flap. RVersion 2: the pressure gauge is in the

electric air pump.

TIREFIT kit version 1

X Remove the cap from valve E on the faulty

tire.

X Make sure pressure release screw F on

pressure gauge G is fully closed. X Screw filler hose D onto valve E. X Insert connector A into the socket in the

footwell of the 2nd row of seats (Y page 281).

X Open flap ;. X Pull connector A with the cable and hose

B out of the housing.

X Screw hose B onto flange C of TIREFIT

sealant filler bottle :.

X Place TIREFIT sealant filler bottle : head downwards into recess = of the electric air pump.

! None of the other sockets or cigarette lighters are designed for operating the electric air pump.

X Turn the key to position 1(Y page 147) in

the ignition lock.

X Press on/off switch ? on the electric air

pump to I. The electric air pump is switched on. The tire is inflated.

i First, TIREFIT is pumped into the tire. The pressure can briefly rise to approximately 500 kPa (5 bar/73 psi). Do not switch off the electric pump during this phase.

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X Let the electric pump run for five minutes.

The tire should then have attained a pressure of at least 180 kPa (1.8 bar/ 26 psi). G Warning The air hose can become hot during inflation. Please exercise appropriate caution.

! Do not operate the electric air pump for longer than eight minutes at a time without a break. It may otherwise overheat. The air pump can be operated again once it has cooled down.

If after five minutes a pressure of 180 kPa (1.8 bar/26 psi) has been achieved, see (Y page 315). If after five minutes a pressure of 180 kPa (1.8 bar/26 psi) has not been achieved, see (Y page 315).

TIREFIT kit version 2

X Pull connector ? with the cable and hose

A out of the housing.

X Screw hose A onto flange B of TIREFIT

sealant filler bottle :.

X Place TIREFIT sealant filler bottle : head downwards into recess ; of the electric air pump.

X Remove the cap from valve C on the faulty

tire.

X Screw filler hose D onto valve C. X Insert connector ? into the socket in the

footwell of the 2nd row of seats (Y page 281).

! None of the other sockets or cigarette lighters are designed for operating the electric air pump.

X Turn the key to position 1(Y page 147) in

the ignition lock.

X Press on/off switch = on the electric air

pump to I. The electric air pump is switched on. The tire is inflated.

i First, TIREFIT is pumped into the tire. The pressure can briefly rise to approximately 500 kPa (5 bar/73 psi). Do not switch off the electric pump during this phase. G Warning The air hose can become hot during inflation. Please exercise appropriate caution.

! Do not operate the electric air pump for longer than eight minutes at a time without a break. It may otherwise overheat. The air pump can be operated again once it has cooled down.

If after five minutes a pressure of 180 kPa (1.8 bar/26 psi) has been achieved, see (Y page 315).

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If after five minutes a pressure of 180 kPa (1.8 bar/26 psi) has not been achieved, see (Y page 315).

Tire pressure of 180 kPa (1.8 bar/ 26 psi) is not achieved If after five minutes a pressure of 180 kPa (1.8 bar/26 psi) has not been achieved: X Press the on/off switch on the electric air

pump to 0. The electric air pump is switched off. X Unscrew the filler hose from the valve. X Very slowly drive forwards or reverse

approximately 30 ft (10 m).

X Pump up the tire again. G Warning If after five minutes a pressure of 180 kPa (1.8 bar/26 psi) cannot be achieved, the tire is too badly damaged to be repaired reliably using TIREFIT. In this case TIREFIT cannot seal the tire properly. Do not drive any further. Contact the nearest authorized Mercedes- Benz Center for assistance or call roadside assistance.

Tire pressure of 180 kPa (1.8 bar/ 26 psi) is achieved X Press the on/off switch on the electric air

pump to 0. The electric air pump is switched off.

X Remove the TIREFIT kit from the wheel. G Warning The air hose may still be hot. Exercise proper caution to avoid burning yourself when detaching the electric air pump.

! After use, excess TIREFIT may run out of

the filler hose. This could cause stains. Therefore, place the filler hose in the plastic bag which contained the TIREFIT kit.

X Stow the TIREFIT kit and the electric air

pump.

X Pull away immediately. G Warning Do not exceed a vehicle speed of 50 mph (80 km/h). A TIREFIT repair is not designed to operate at higher speeds. The sticker must be attached on the instrument cluster where it will be easily seen by the driver. Vehicle handling characteristics of a TIREFIT repaired tire may change. Adapt your driving accordingly.

X Stop after driving for approximately ten minutes and check the tire pressure with the electric air pump. G Warning If tire inflation pressure has fallen below 130 kPa (1.3 bar/26 psi) do not continue to drive the vehicle. Park your vehicle safely away from the roadway and contact the nearest authorized Mercedes-Benz Center or roadside assistance. Have the damaged tire replaced.

X Correct the tire inflation pressure if it is at least 130 kPa (1.3 bar/26 psi) (for values see Tire and Load Information placard on the driver's side B-pillar or tire inflation pressure table inside the fuel filler flap).

X To increase the tire pressure: switch on

the electric air pump.

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X Have the TIREFIT kit replaced every four years at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.

Changing a wheel and mounting the spare wheel Preparing the vehicle G Warning! The wheel and tire size of the emergency spare wheel/spare wheel may differ to that of the damaged wheel. When using an emergency spare wheel/spare wheel the handling characteristics of the vehicle may change. Adapt your style of driving accordingly. Never operate the vehicle with more than one emergency spare wheel/spare wheel that differs in size. Only use an emergency spare wheel/spare wheel of a differing size briefly and do not switch off ESP®. When using an emergency spare wheel, you must not exceed a maximum speed of 50 mph (80 km/h). G Warning! Have the emergency spare wheel/spare wheel replaced with a new wheel as soon as possible at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use an authorized Mercedes-Benz Center for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.

i Vehicles without an emergency spare

wheel/spare wheel are not equipped with wheel-changing tools at the factory. For more information on which tools are required to perform a wheel change on your vehicle, e.g. wheel chock, alignment bolt or

TIREFIT kit version 1
X To reduce the tire pressure (version 1):

open pressure release screw F on pressure gauge G.

TIREFIT kit version 2
E Pressure release button F Pressure gauge X To reduce the tire pressure (version 2):

press pressure release button E on the filler hose.

X Stow the TIREFIT kit and the electric air

pump.

X Drive to the nearest workshop and have the

tire changed there.

X Have the TIREFIT kit replaced as soon as

possible at a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center. H Environmental note Have the used TIREFIT kit disposed of professionally, e.g. at an authorized Mercedes-Benz Center.

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lug wrench, consult an authorized Mercedes-Benz Center.

X Prepare the vehicle as described

X If a trailer is coupled to the vehicle,

(Y page 311).

uncouple it.

X Remove the following items from the

stowage well under the trunk floor: Rthe emergency spare wheel42
Rthe lug wrench Rthe folding wheel chock Rthe jack Rthe ratchet ring spanner Rthe alignment bolt Rthe wheel bolts for the emergency spare

wheel

X Secure the vehicle to prevent it from rolling

away.

Securing the vehicle to prevent it from rolling away G Warning Only jack up the vehicle on level ground or on slight inclines/declines. The vehicle could otherwise fall off the jack and injure you or others.

If your vehicle is equipped with a wheel chock, it can be found in the vehicle tool kit (Y page 310). The folding wheel chock is an additional securing measure to prevent the vehicle from rolling away, for example when changing a wheel.

X Fold both plates upwards :. X Fold out lower plate ;. X Guide the lugs on the lower plate fully into

openings in base plate =.

Securing the vehicle on level ground X On level ground: place chocks or other suitable items under the front and rear of the wheel that is diagonally opposite the wheel you wish to change.

Securing the vehicle on slight downhill gradients

42 Vehicles with an emergency spare wheel.

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X On downhill gradients: place chocks or other suitable items in front of the wheels of the front and rear axle.

Raising the vehicle G Warning When jacking up the vehicle, only use the jack which has been specifically approved by Mercedes-Benz for your vehicle. The jack is designed exclusively for jacking up the vehicle at the jacking points built into both sides of the vehicle. The jack saddle must be placed centrally under the jacking point. The jack must always be vertical when in use, especially on inclines or declines. The jack is intended only for lifting the vehicle briefly for wheel changes. It is not suited for performing maintenance work under the vehicle. To help avoid personal injury, use the jack only to lift the vehicle during a wheel change. Never get beneath the vehicle while it is supported by the jack. Keep hands and feet away from the area under the lifted vehicle. Always lower the vehicle onto sufficient capacity jackstands before working under the vehicle. Always firmly engage the parking brake and block the wheels with wheel chocks or other sizable objects before raising the vehicle with the jack. Do not disengage the parking brake while the vehicle is raised. Make sure that the ground on which the vehicle is standing and where you place the jack is solid, level and not slippery. If necessary, use a large underlay. On slippery surfaces, such as tiled floors, you should use a non-slip underlay, for example a rubber mat. Do not use wooden blocks or similar objects as a jack underlay. Otherwise, the jack may not be able to achieve its load-bearing capacity if it is not at its full height. Never start the engine when the vehicle is raised. Also observe the notes on the jack.

X Using lug wrench :, loosen the bolts on the wheel you wish to change by about one full turn. Do not unscrew the bolts completely.

The jacking points for the jack are located behind the wheel housings of the front wheels and in front of the wheel housings of the rear wheels (arrows).

G Warning The jack is designed exclusively for jacking up the vehicle at the jacking points. The jack saddle must be placed centrally under the jacking point. If you do not position the jack correctly in the jacking point, the vehicle can fall off the jack and seriously or fatally injure you or others.

! The jack is designed exclusively for

jacking up the vehicle at the jacking points. Otherwise, your vehicle could be damaged. X Take ratchet ring spanner out of the vehicle tool kit and place it on the hexagon nut of the jack so that the letters AUF are visible.

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Removing a wheel

X Position jack = at jacking point ;.

X Make sure that the base of the jack is

positioned directly under the jacking point. X Turn ratchet ring spanner ? until jack = sits completely on jacking point ; and the base of the jack lies evenly on the ground. X Turn ratchet ring spanner ? until the tire is raised a maximum of 1.2 inches (3 cm) off the ground.

X Unscrew the uppermost wheel bolt

completely.

X Screw alignment bolt : into the thread

instead of the wheel bolt.

X Unscrew the remaining wheel bolts fully. ! Do not place wheel bolts in sand or on a

dirty surface. The bolt and wheel hub threads could otherwise be damaged when you screw them in. X Remove the wheel.

Mounting a new wheel G Warning! Always replace wheel bolts that are damaged or rusted. Never apply oil or grease to wheel bolts. Damaged wheel hub threads should be repaired immediately. Do not continue to drive under these circumstances! Contact an authorized Mercedes-Benz Center or call Roadside Assistance. Incorrect wheel bolts or improperly tightened wheel bolts can cause the wheel to come off. This could cause an accident. Make sure to use the correct wheel bolts. G Warning Only use genuine Mercedes-Benz wheel bolts. Other wheel bolts may come loose.

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Do not tighten the wheel bolts when the vehicle is raised. Otherwise, the vehicle could fall off the jack.

1 Wheel bolts for 19", 20" and 21" wheels 2 Wheel bolts for the "Minispare"

emergency spare wheel

! Always use wheel bolts ; to mount the "Minispare" emergency spare wheel. Using other wheel bolts to mount the "Minispare" emergency spare wheel could damage the brake system. G Warning Make sure to use the original length wheel bolts when remounting the original wheel after it has been repaired.

X Clean the wheel and wheel hub contact

surfaces.

! To prevent damage to the paintwork, hold the wheel securely against the wheel hub while screwing in the first wheel bolt.

X Slide the emergency spare wheel onto the

alignment bolt and push it on.

X Tighten the wheel bolts until they are

finger-tight.

X Unscrew the alignment bolt. X Tighten the last wheel bolt until it is finger-

tight.

Lowering the vehicle X Place the ratchet ring spanner onto the

hexagon nut of the jack so that the letters AB are visible.

X Turn the ratchet ring spanner until the

vehicle is once again standing firmly on the ground.

X Place the jack to one side.

X Tighten the wheel bolts evenly in a crosswise pattern in the sequence indicated (: to A). The tightening torque must be 110 lb-ft (150 Nm). G Warning! Have the tightening torque checked immediately after a wheel is changed. The wheels could come loose if they are not tightened to a torque of 110 lb-ft (150 Nm).

X Turn the jack back to its initial position and store it together with the rest of the vehicle tool kit in the cargo compartment.

Vehicles with an emergency spare wheel: X Wrap the faulty wheel in the protective film included with the emergency spare wheel

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and transport the wheel in the cargo compartment.

or X Depending on the size of the wheel, you

may also be able to secure the faulty wheel in the emergency spare wheel well. In this case, you must remove the stowage tray from the emergency spare wheel well and store it securely in the cargo compartment. i When you are driving with the collapsible

spare wheel mounted, the tire pressure loss warning system or the tire pressure monitor cannot function reliably. Only restart the tire pressure loss warning system/tire pressure monitor when the defective wheel has been replaced with a new wheel. Vehicles with tire pressure monitor: all mounted wheels must be equipped with functioning sensors and the defective wheel should no longer be in the vehicle.

MOExtended run-flat system The MOExtended run-flat system allows you to drive on even if there is a complete loss of pressure in one or more tires. The MOExtended run-flat system may only be used in conjunction with the activated tire pressure loss warning system or with the activated tire pressure monitor. The maximum permissible distance which can be driven in run-flat mode depends on the cargo in the vehicle. You can drive 50 miles (80 km) if the vehicle is partially laden and 18 miles (30 km) if it is fully laden. The maximum permissible distance which can be driven in run-flat mode is counted from the moment the tire pressure loss warning appears in the multifunction display. You must not exceed a maximum speed of 50 mph(80 km/h).

Flat tire 321

G Warning! The handling characteristics of your vehicle deteriorate in run-flat mode, for example: Rwhen cornering Rwhen braking Rwhen accelerating rapidly Adapt your driving style accordingly and avoid sudden changes in direction and sudden acceleration, as well as driving over obstacles (i.e. curbs, potholes), and driving off-road. This is particularly the case when the vehicle is heavily laden. The maximum permissible distance that can be driven in run-flat mode depends to a large extent on the loads placed on the vehicle. It can be shorter due to high speeds, a heavy cargo, sudden changes in direction, the road surface condition, outside temperature, etc., or further if you drive carefully and conservatively. Do not continue to drive in run-flat mode if: Ryou hear banging noises. Rthe vehicle starts to shake. Ryou see smoke and smell rubber. RESP® is intervening constantly. Rthere are tears in the sidewalls of the tire. After driving in run-flat mode, you must have the wheel(s) checked for damage at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. The faulty tire must be replaced in every case. Mercedes-Benz recommends that you use an authorized Mercedes-Benz Center for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.

i When replacing one or all tires, make sure

that you only use tires marked MOExtended and of the specified size for the vehicle.

i Vehicles featuring the MOExtended run- flat system are not equipped with TIREFIT

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kit at the factory. It is therefore recommended that you additionally equip your vehicle with the TIREFIT kit if you mount tires that do not feature run-flat properties, e.g. winter tires. You can obtain a TIREFIT kit from an authorized Mercedes- Benz Center, for example.

Battery Important safety notes In order for the battery to achieve the maximum possible service life, it must always be sufficiently charged. ! Have the battery checked regularly at a

qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. Observe the service intervals in the Service Booklet or for further information consult a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.

Have the battery charge checked more frequently if you use the vehicle mainly for short trips or if you leave it standing idle for a lengthy period. To prevent damage from corrosion, only replace the battery with one that has a central ventilation cover. Only replace a battery with a battery that has been recommended by Mercedes-Benz. Consult an authorized Mercedes-Benz Center if you wish to leave your vehicle parked for a long period of time. G Warning! Comply with safety precautions and take protective measures when handling batteries.

Risk of explosion

Fire, naked flames and smoking are prohibited when handling the battery. Avoid creating sparks.

Battery acid is caustic. Avoid contact with the skin, eyes or clothing. Wear suitable protective clothing, in particular gloves, an apron and a face mask. Immediately rinse acid splashes off with clean water. Consult a doctor if necessary. Wear eye protection.

Keep children away.

Observe this Operator's Manual.

H Environmental note Do not dispose of batteries in the household rubbish. Dispose of defective batteries in an environmentally responsible manner. Take them to an authorized Mercedes-Benz Center or to a special collection point for old batteries. G Warning Failure to follow these instructions can result in severe injury or death. Never lean over batteries while connecting. 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.

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323

G Warning 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. On vehicles with KEYLESS-GO, make sure that the ignition is switched off. Check that all the indicator lamps in the instrument cluster are off. 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: Rset the clock (Y page 222)

On vehicles with COMAND and a navigation system, the clock is set automatically.

Rreset the sliding sunroof (Y page 90) Rreset the function for folding the exterior mirrors in/out automatically by folding the mirrors out once (Y page 108) Rreset the side windows (Y page 87)

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.

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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 325). X Open the hood (Y page 294). 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 325).

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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 converter43 and create a risk of fire. Do not use a rapid-charging device to start the engine. 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 Only jump-start the vehicle when the engine is cold and the catalytic converter system has

cooled down44 .

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.

If you jump-start using a battery with higher voltage, it may damage the electrical systems of the vehicle.

X Only use jumper cables which have a sufficient cross-section and insulated terminal clamps. X Make sure that the jumper cables cannot come into contact with parts, such as the pulley

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

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

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

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

authorized Mercedes-Benz Center.

X Make sure that the two vehicles do not touch. X Apply the parking brake firmly.

43 Only vehicles with a gasoline engine. 44 Only vehicles with a gasoline engine.

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X Shift the transmission to position P. X Switch off all electrical consumers (e.g. radio, blower etc.). X Open the hood (Y page 294).

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

using the jumper cable, beginning with your own battery.

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

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

X Start the engine. X First remove the jumper cable from earth point B and negative terminal ?, then from

positive terminal ; and positive terminal =, each time disconnecting from the battery on your own vehicle first.

X Have the battery checked at a qualified specialist workshop, e.g. an authorized Mercedes-

Benz Center.

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Towing and tow-starting Important safety notes G Warning If you tow the vehicle, you must use a rigid towing 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.

With the engine not running, there is no power assistance for the brake and steering systems. You will then need considerably more force to steer and to brake and the brake pedal travel will be longer. If necessary, depress the brake pedal with maximum force. Before towing away, make sure that the steering can be moved and is not locked. If you tow or tow-start another vehicle, its weight must not exceed the maximum permissible gross vehicle weight of your vehicle.

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 rope or tow bar at the towing eyes. Otherwise, the vehicle could be damaged.

! Do not use the towing eye for recovery,

as this could damage the vehicle. If in doubt, recover the vehicle with a crane.

! Drive slowly and smoothly when towing. Excessive tractive power could otherwise damage the vehicles.

! Do not tow with sling-type equipment.

This could damage the vehicle.

Towing and tow-starting 327

! When towing vehicles with KEYLESS-GO,

use the key instead of the Start/Stop button. Otherwise, the automatic transmission may shift to position P when the driver's or front-passenger door are opened, which could lead to damage to the transmission.

! Vehicles with differential locks: make

sure that the differential locks are in automatic mode. When towing, the differential locks must not be switched on by hand. This could otherwise damage the transmission.

! Vehicles with automatic transmission

must not be started by tow-starting. This could otherwise damage the transmission. ! Vehicles with 4MATIC must not be towed with the front or rear axle raised. This could otherwise damage the transmission. If the vehicle has suffered transmission damage, have it carried away on a transporter or trailer. The automatic transmission must be in position N when the vehicle is being towed. Make sure that the battery is connected and charged. You will otherwise not be able to: Rturn the SmartKey to position 2 in the

ignition lock.

Rshift the automatic transmission to

position N.

i Switch off the automatic locking feature before the vehicle is towed (Y page 79). Otherwise, you could lock yourself out of the vehicle when pushing or towing the vehicle.

Installing/removing the towing eye Installing the towing eye Vehicles with a trailer tow hitch: if possible secure the towing device on the trailer tow hitch (Y page 209).

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X Remove the towing eye from the vehicle

tool kit (Y page 310). G Warning The exhaust tail pipe may be hot. You could burn yourself if you touch the tail pipe. Be particularly careful when removing the rear cover.

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

X Press the mark on cover : inwards, in the

direction of the arrow.

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

stop and tighten it.

Removing the towing eye X Loosen the towing eye and unscrew it. X Attach cover : to the bumper and press

until it engages.

X Place the towing eye in the vehicle tool kit.

Towing the vehicle with both axles on the ground When having your vehicle towed, observe the important safety notes (Y page 327).

G Warning With the engine not running, there is no power assistance for the brake and steering systems. In this case, it is important to keep in mind that a considerably higher degree of effort is necessary to brake and steer the vehicle. Adapt your driving accordingly.

The automatic transmission automatically shifts to position P when you open the driver's or front-passenger door or when you remove the SmartKey from the ignition lock. In order to ensure that the automatic transmission stays in position N when towing, do the following: X Make sure that the vehicle is stationary and

that the SmartKey is in position 0 in the ignition lock.

X Turn the SmartKey to position 2 in the

ignition lock. On vehicles with KEYLESS-GO, use the SmartKey instead of the Start/Stop button (Y page 147).

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

position N.

X Release the brake pedal. X Release the parking brake. X Switch on the hazard warning flashers

X Leave the SmartKey inserted in the ignition

(Y page 117).

lock in position 2.

i When towing with the hazard warning

flashers switched on, use the combination switch as usual to signal in which direction you are changing. In this case, only the indicator lamps for the direction of travel flash. When you reset the combination switch, the hazard warning flashers start flashing again.

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Transporting the vehicle The towing eyes or trailer tow hitch can be used to pull the vehicle onto a trailer or transporter if you wish to transport it. X Turn the SmartKey to position 2 in the

ignition lock.

X Shift the automatic transmission to

position N.

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

applying the parking brake.

X Shift the automatic transmission to

position P.

X Turn the SmartKey to position 0 in the ignition lock and remove the SmartKey.

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.

Notes on 4MATIC vehicles ! Vehicles with 4MATIC must not be towed with either the front or the rear axle raised, as doing so will damage the transmission.

If the vehicle's transmission, front, or rear axle is damaged, have the vehicle transported on a truck or trailer.

In the event of damage to the electrical system If the battery is defective, the automatic transmission will be locked in position P. To shift the automatic transmission to position N, you must provide power to the vehicle's electrical system in the same way as when jump-starting (Y page 325). Have the vehicle transported on a transporter or trailer.

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329

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 have become stuck in loose or muddy ground, pull the vehicle out with extreme caution, particularly if it is laden. Never attempt to recover a stuck vehicle with a trailer attached. Pull out the vehicle backwards, if possible using the tracks it made when it became stuck.

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 will fail. G Warning Only use fuses approved by Mercedes-Benz with the specified amperage for the system in question and do not attempt to repair or bridge a blown fuse. Using other than approved fuses or using repaired or bridged fuses may cause an overload leading to a fire, and/or cause damage to electrical components and/or systems. Have the cause determined and remedied by an authorized Mercedes-Benz Center.

Blown fuses must be replaced with fuses of the same rating, which you can recognize by the color and value. The fuse ratings are listed in the fuse allocation chart. An authorized Mercedes-Benz Center will be happy to advise you. i If a fuse has blown, visit a breakdown service or an authorized Mercedes-Benz Center.

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If the newly inserted fuse also blows, have the cause traced and rectified at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. ! Only use fuses that have been approved

for Mercedes-Benz vehicles and which have the correct fuse rating for the system concerned. Otherwise, components or systems could be damaged.

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

brake.

X Switch off all electrical consumers. X Remove the key from the ignition lock. The fuses are located in various fuse boxes: Rfuse box on the front-passenger side of the

dashboard

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

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

The fuse allocation chart is located in the vehicle tool kit (Y page 310) in the stowage compartment under the trunk floor.

Fuse box in the cockpit ! Do not use a pointed object such as a

screwdriver to open the cover in the dashboard. You could damage the dashboard or the cover.

X To open: pull cover : outwards in the

direction of the arrow and remove it.

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

the dashboard.

X Fold cover : inwards until it engages.

Fuse box in the engine compartment X Open the hood (Y page 294).

Example shows GL 450 (GL 350 BlueTEC, GL 550
is similar) X Remove any existing moisture from the

fuse box using a dry cloth. X To open: open clamps ;. X Fold up cover : and remove it towards the

front of the vehicle.

X To close: check whether the rubber seal is

lying correctly in cover :.

X Insert cover : at the rear of the fuse box

into the retainer.

X Fold down cover : and close clamps ;.

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! The cover must be seated properly,

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

X Close the hood (Y page 295).

Fuse box in the cargo compartment X Open the tailgate.

X To open: insert a suitable object, e.g. a

coin, into the slot of release button : on the cover.

X Turn release button : 90° in the direction

of the arrow.

X Open cover ; downwards.

Engine emergency off If the engine cannot be switched off as described, observe the following procedure: X Take the fuse allocation chart out of the

vehicle tool kit (Y page 310).

X Open the fuse box in the engine

compartment (Y page 330).

X Remove fuse 120. The installation location

of the fuse is described in the fuse allocation chart.

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Vehicle equipment ............................ 334
Important safety notes .................... 334
Directives to be observed ................ 335
Maintenance and care of wheels and tires ............................................. 335
Tire pressures ................................... 336
Maximum tire pressures .................. 344
Loading the vehicle .......................... 344
Maximum tire load ............................ 348
Direction of rotation ......................... 348
Uniform Tire Quality Grading Standards .......................................... 348
Interchanging the wheels ................ 350
Tire labeling ....................................... 350
Definitions for tires and loading ...... 354
Wheel/tire combinations ................. 357

333

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Important safety notes

Vehicle equipment

i This manual describes all the standard and optional equipment of your vehicle which was available at the time of purchase. Country-specific differences are possible. Bear in mind that your vehicle may not feature all functions described here. This also refers to safety-related systems and functions.

Important safety 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