2011 Mercedes-benz M Class Owners Manual

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.

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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.

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.

X Position jack = at jacking point ;.

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

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.

Removing a wheel

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.

1 Wheel bolts for 18", 19", 20" and 21" wheels or collapsible emergency spare wheel (AMG vehicles)

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.

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G Warning Make sure to use the original length wheel bolts when remounting the original wheel after it has been repaired.

G Warning! Comply with the manufacturer's safety instructions on the sticker on the electric air pump.

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.

X Vehicles with collapsible spare wheel:

inflate the collapsible spare wheel (Y page 309) and then lower the vehicle (Y page 310).

or X Vehicles with spare

wheel/"Minispare" emergency spare wheel: lower the vehicle (Y page 310).

Inflating the collapsible spare wheel G Warning! Pump up the collapsible spare wheel before lowering the vehicle. You could otherwise damage the wheel rim.

Your vehicle is equipped with one of two electric air pumps: RVersion 1: electric air pump with pressure

gauge on the air hose.

RVersion 2: electric air pump with

integrated pressure gauge.

The following description applies to both versions. Differences in the way they are used will be explained in detail.

Version 1

Version 2
X Version 1: open flap :. X Version 1: pull connector = and the air hose with pressure gauge ? out of the housing.

X Version 2: pull connector = and the air

hose out of the housing.

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release screw on pressure gauge 4 until the correct tire pressure has been reached. X Version 2: if the tire pressure is higher than

the specified pressure, press pressure release button 6 until the correct tire pressure has been reached.

X Unscrew union nut A on the air hose from

the valve.

X Screw the valve cap onto the collapsible

spare wheel valve again.

X Version 1: stow plug = and the air hose

behind flap :.

X Version 2: stow plug = and the air hose in the lower section of the pump housing.

X Stow the electric air pump in the designated place in the vehicle.

Lowering the vehicle G Warning! Vehicles with spare wheel with collapsible tire only: Inflate collapsible tire only after the wheel is properly attached. Inflate the collapsible tire using the electric air pump before 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 Version 1: make sure that the pressure release screw on pressure gauge ? is closed.

X Remove the cap from the valve on the

collapsible spare wheel.

X Screw union nut A on the air hose onto the

valve.

X Make sure on/off switch ; of the electric

air pump is set to 0.

X Insert connector 3 into the socket in the

footwell of the 2nd row of seats (Y page 269).

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

X Make sure that the SmartKey is in position

1(Y page 139) 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. G Warning The air hose and the union nut can become hot during inflation. Exercise proper caution to avoid burning yourself when using the equipment.

! 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.

X Pump the tire to the specified tire pressure. The specified tire pressure is printed on the yellow label of the emergency spare wheel. X When the specified tire pressure has been

reached, press on/off switch 2 on the electric air pump to 0. The electric air pump is switched off.

X Turn the SmartKey to position 0 in the

ignition lock.

X Version 1: if the tire pressure is higher than the specified pressure, open the pressure

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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 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.

Further information on stowing the collapsible spare wheel (Y page 299). 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.

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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). 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.

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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 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 guidelines 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! HYBRID vehicles: It is imperative that you read the HYBRID Supplemental Operating Instructions included in your vehicle literature portfolio. You may otherwise not receive all necessary safety information and warning for the operation of your vehicle. 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.

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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. 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.

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313

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 215)

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! 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 315). X Open the hood (Y page 282). 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 315).

314 Battery

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

Rreset the sliding sunroof (Y page 89) Rreset the function for folding the exterior mirrors in/out automatically by folding the mirrors out once (Y page 102) 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. 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.

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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. G Warning! HYBRID vehicles: It is imperative that you read the HYBRID Supplemental Operating Instructions included in your vehicle literature portfolio. You may otherwise not receive all necessary safety information and warning for the operation of your vehicle.

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

damage the catalytic converter52 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 down53 .

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.

52 Only vehicles with a gasoline engine. 53 Only vehicles with a gasoline engine.

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Jump-starting

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. X Shift the transmission to position P. X Switch off all electrical consumers (e.g. radio, blower etc.). X Open the hood (Y page 282).

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.

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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.

Towing and tow-starting Important safety guidelines G Warning Hybrid vehicles: ensure that you read the "HYBRID" supplement. You may otherwise fail to recognize dangers. 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.

! 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.

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318 Towing and tow-starting

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 198). X Remove the towing eye from the vehicle

tool kit (Y page 298). 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.

Vehicles with standard bumpers

Vehicles with the AMG Sports package 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.

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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 the rear axle raised Only possible for vehicles without 4MATIC. When having your vehicle towed with the rear axle raised, observe the important safety notes (Y page 317). ! The ignition must be switched off if you are towing the vehicle with the rear axle raised. Intervention by ESP® could otherwise damage the brake system. X Switch on the hazard warning flashers

(Y page 109).

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

X When leaving the vehicle, take the

SmartKey or the KEYLESS-GO key with you.

Towing vehicles with both axles on the ground When having your vehicle towed, observe the important safety notes (Y page 317). 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 139).

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 109).

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.

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.

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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 315). Have the vehicle transported on a transporter or trailer.

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 guidelines 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.

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.

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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 298) 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.

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321

Fuse box in the engine compartment X Open the hood (Y page 282).

Example shows ML 350 (ML 350 BlueTEC, ML 550, AMG vehicles are 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 ;. ! The cover must be seated properly,

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

X Close the hood (Y page 283).

Fuse box in the cargo compartment X Open the tailgate.

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

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

X Turn release buttons : 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 298).

X Open the fuse box in the engine

compartment (Y page 321).

X Remove fuse 120. The installation location

of the fuse is described in the fuse allocation chart.

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Vehicle equipment ............................ 324
Important safety guidelines ............ 324
Directives to be observed ................ 325
Maintenance and care of wheels and tires ............................................. 325
Tire pressures ................................... 326
Maximum tire pressures .................. 334
Loading the vehicle .......................... 334
Maximum tire load ............................ 338
Direction of rotation ......................... 338
Uniform Tire Quality Grading Standards .......................................... 338
Interchanging the wheels ................ 340
Tire labeling ....................................... 340
Definitions for tires and loading ...... 344
Wheel/tire combinations ................. 347

323

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Important safety guidelines

Vehicle equipment

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

Important safety guidelines

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

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

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

(tires with run-flat characteristics)

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

i Further information about tires and

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

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Maintenance and care of wheels and tires

325

Directives to be observed

ROnly mount tires and wheels of the same

type and make.

ROnly mount tires of the correct size onto

the wheels.

RAfter mounting new tires, run them in at

moderate speeds for the first 60 miles (100 km) as they only reach their full performance after this distance.

RDo not use tires until they are excessively

worn as the tire traction on wet road surfaces decreases significantly when the tread depth is less than 1/8 in (3 mm).

RIf the vehicle is heavily laden, check the tire

pressure and adjust it if necessary.

RWhen parking your vehicle, make sure that the tires do not get deformed by the curb or other obstacles. If it is necessary to drive over curbs, speed humps or similar elevations, try to do so slowly and at an obtuse angle. Otherwise, the tires, particularly the sidewalls, can get damaged.

Maintenance and care of wheels and tires Checking wheels and tires G Warning Regularly check the tires for damage. Damaged tires can cause tire inflation pressure loss. As a result, you could lose control of your vehicle. Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them.

RRegularly check the wheels and tires of

your vehicle for damage (e.g. cuts, punctures, tears, bulges on tires and deformation or severe corrosion on wheels), at least once a month, as well as after driving off-road or on rough roads.

Damaged wheels can cause a loss of tire pressure.

RRegularly check the tire tread depth and

the condition of the tread across the whole width of the tire (Y page 325). If necessary, turn the front wheels to full lock in order to inspect the inner side of the tire surface.

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

RRegularly check the pressure of all the tires including the emergency spare wheel or the spare wheel, particularly prior to long trips, and correct the pressure as necessary (Y page 326).

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

Tire tread G Warning Although the applicable federal motor vehicle safety laws consider a tire to be worn when the tread wear indicators (TWI) become visible at approximately 1/16 in (1.6 mm), we recommend that you do not allow your tires to wear down to that level. As tread depth approaches 1/8 in (3 mm), the adhesion properties on a wet road are sharply reduced.

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

Do not use tires until they are excessively worn as the tire traction on wet road surfaces decreases significantly when the tread depth is less than 1/8 in (3 mm). Tread wear indicators (TWI) are required by law. Six indicators are positioned over the tire tread. They are visible as soon as a tread depth of approximately 1/16 in (1.6 mm) is reached. If this is the case, the tire is so worn that it must be replaced. The recommended tread depth for summer tires is at least 1/8 in (3 mm). The recommended tread depth for winter tires is at least 1/6 in (4 mm).

Bar marking : for tread wear is integrated into the tire tread.

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

Cleaning tires ! Do not use a high pressure jet with

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

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

You will find a table of recommended tire pressures on the Tire and Loading Information placard on the B-pillar on the driver's side (Y page 334). You will find a table of tire pressures for various operating conditions on the inside of your vehicle's fuel filler flap. To test tire pressure, use a suitable pressure gauge. The outer appearance of a tire does not permit any reliable conclusion about the tire pressure. On vehicles installed with the electronic tire pressure monitor, the tire pressure can be checked in the on-board computer. G Warning! Should the tire pressure drop repeatedly:

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Rcheck the tire for foreign bodies. Rcheck whether the wheel is losing air or the

valve is leaking.

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

tire pressure that is too low have a negative effect on vehicle safety, which could lead you to cause an accident.

Only correct tire pressures when the tires are cold. The tires are cold when the vehicle has been parked for at least three hours or driven for less than 1 mile (1.6 km). The tire temperature changes depending on the outside temperature, the vehicle speed and the tire load. If the tire temperature changes by 18 ‡ (10 †), the tire pressure changes by approximately 10 kPa (0.1 bar/1.5 psi). Take this into account when checking the pressure of warm tires and only correct the tire pressure if it is too low for the current operating conditions. If you check the tire pressure when the tires are warm, the resulting value will be higher than if the tires were cold. This is normal. Do not reduce the tire pressure to the value specified for cold tires. The tire pressure would otherwise be too low. Observe the recommended tire pressure specifications for cold tires on the Tire and Loading Information placard on the B-pillar on the driver's side. i The specifications given on the following Tire and Loading Information placard are examples. Tire pressure specifications are vehicle-specific and may deviate from the data shown here. The tire pressure specifications for your vehicle can be found on the Tire and Loading Information placard of your vehicle.

You will find recommended tire pressure specifications : for tires in a cold state and for a fully loaded vehicle on the Tire and Loading Information placard. The tire pressure specifications apply to tires which are installed at the factory.

Important notes on tire pressures G Warning If the tire pressure drops repeatedly, check the tires for punctures from foreign objects and/or whether air is leaking from the valves or from around the rim.

The tire temperature and pressure increase when the vehicle is in motion. This is dependent on the driving speed and the load. If you wish to drive at high speeds of 100 mph (160 km/h) or higher when this is allowed, use the tire pressure table on the inside of the fuel filler flap to set the correct tire pressures when the wheels are cold. If the tire pressure is not set correctly, this can lead to an excessive build up of heat and a sudden loss of pressure. For more information, contact a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center. i Ride comfort may be affected if the tire pressure is adjusted to the recommended value for speeds of over 100 mph (160 km/h).

Make sure that the tire pressure for normal speeds is adopted again.

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Additional specifications of tire pressure values for loads can also be found on the tire pressure table on the inside of the fuel filler flap. The tire pressure for emergency spare wheels can be found: Ron the yellow sticker on the wheel rim of

the emergency spare wheel

Rin the "Tires" section (Y page 347) in this

Operator's Manual

Ron the Tire and Loading Information placard

on the driver’s door B-pillar

i The specifications shown in the examples

in the tire pressure tables are only examples. Tire pressure specifications are vehicle-specific and may deviate from the data shown here. The tire pressure specifications that are valid for your vehicle can be found on your vehicle's tire pressure table.

The tire pressures in the tire pressure table on the inside of the fuel filler flap are valid for all approved tires installed at the factory, unless stated otherwise.

The tire pressure table is valid for all approved tires installed at the factory (example) If the tire pressure precedes a tire size, the tire pressure specification is only valid for this tire size. The vehicle loading conditions "partially laden" or "fully laden" are specified using a differing number of persons and luggage in the table. The actual number of seats may differ from this.

Tire pressure table with tire sizes (example) Some tire pressure tables only show the rim diameter instead of the complete tire size, e.g. R18. The rim diameter is a component of the tire size and can be read from the tire sidewall (Y page 341).

i For vehicles towing a trailer, the fully

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

Tire pressure too low or too high 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.

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

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

Overinflated tires can: Radversely affect handling Rwear excessively and/or unevenly Rbe more likely to become damaged Radversely affect ride comfort Rincrease stopping distance

Checking the tire pressures Important safety guidelines G Warning Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Do not overload the tires by exceeding the specified load limit as indicated on the Tire

and Loading Information placard on the driver's door B-pillar. Overloading the tires can overheat them, possibly causing a blowout. Overloading the tires can also result in handling or steering problems, or brake failure.

Check the tire pressure at least once a month. Only check and correct tire pressures when the tires are cold (Y page 326).

Checking the tire pressure manually In order to determine and adjust the tire pressures, proceed as follows: X Remove the valve cap of the tire you wish

to check.

X Press the tire pressure gauge securely onto

the valve.

X Read the tire pressure and compare it with

the recommended value on the Tire and Loading Information placard on the B-pillar on the driver's side of your vehicle. X If necessary, increase the tire pressure to

the recommended value (Y page 326).

X If the tire pressure is too high, release air by pressing down the metal pin in the valve using the tip of a pen, for example. Then, check the tire pressure again using the tire pressure gauge.

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

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

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message will appear in the multifunction display. G Warning! When the multifunction display shows the message Tire Pressure Check Tires, one or more of your tires are significantly underinflated. You should stop and check your tires as soon as possible, and inflate them to the proper tire inflation pressure as indicated on the vehicle’s Tire and Loading Information placard or on the tire inflation pressure label. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Each tire, including the spare, should be checked at least once a month when cold. Inflate the tires to the recommended tire inflation pressure as specified on Rthe Tire and Loading Information placard on

the driver’s door B-pillar or

Rthe tire inflation pressure label located on

the inside of the fuel filler flap G Warning! The tire pressure loss warning system does not provide a warning for wrongly selected tire inflation pressures. Always adjust tire inflation pressure according to the Tire and Loading Information placard on the driver's door B-pillar or on the tire inflation pressure label located on the inside of the fuel filler flap. The tire pressure loss warning system does not replace regular checks of the tire inflation pressures since a gradual pressure loss in more than one tire cannot be detected by the tire pressure loss warning system. The tire pressure loss warning system is not able to issue a warning due to a sudden dramatic loss of tire inflation pressure (e.g. tire blowout caused by a foreign object). In this case bring the vehicle to a halt by carefully

applying the brakes and avoiding abrupt steering maneuvers.

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

tires.

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

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

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

on the roof.

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

X Observe the notes in the section on tire

pressures (Y page 326). G Warning! The tire pressure loss warning system can only give reliable warnings if you have set the correct tire pressure. If an incorrect tire pressure is set, these incorrect values will be monitored. A tire with insufficient pressure results in vehicle instability when driving, thus increasing the risk of an accident.

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X Make sure that the key is in position 2

(Y page 139) in the ignition lock.

X Press and hold the V or U button on the multifunction steering wheel until the standard display appears in the multifunction display (Y page 208). X Press the * or & button until the Run Flat Indicator Active Menu: R- Button message appears in the multifunction display.

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

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