2010 Mercedes-benz CLS Class Owners Manual

your probable line of travel. X Apply the brakes immediately. X Carefully observe the traffic situation. You may need to brake

or maneuver to avoid hitting an obstacle.

Vehicle

Problem 6 The yellow fuel

tank reserve warning lamp comes on when the engine is running.

Possible causes/consequences and X Solutions The fuel level has gone below the reserve mark. X Refuel at the next gas station.

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What to do if … 257

Engine

Problem = (USA only) ; (Canada only) The yellow engine malfunction indicator lamp comes on when the engine is running.

Possible causes/consequences and X Solutions There may be a malfunction in Rthe fuel management system Rthe ignition system Rthe emission control system Rsystems which affect emissions Such malfunctions may result in excessive emissions values and may switch the engine to limp-home (emergency operation) mode. X Have the vehicle checked as soon as possible at an authorized

Mercedes-Benz Center.

i Some states may by law require you to visit a workshop as

soon as the engine malfunction indicator lamp comes on. Check local requirements.

= (USA only) ; (Canada only) The yellow engine malfunction indicator lamp comes on when the engine is running.

A loss of pressure has been detected in the fuel system. The fuel cap may not be closed properly or the fuel system may be leaky. X Check the fuel cap (Y page 176). X If it is not closed properly: Close the fuel cap. X If it is closed properly: Have the fuel system checked by an

authorized Mercedes-Benz Center.

? The red coolant

temperature warning lamp comes on when the engine is running.

There is insufficient coolant in the reservoir. If this warning lamp comes on frequently, there is a leak in the cooling system. If the coolant level is correct, the electric radiator fan may be broken. X Immediately add coolant to prevent engine from overheating

(Y page 180).

X Have the cooling system checked. X If the coolant temperature is below 248‡ (120†), you can continue driving to the nearest authorized Mercedes-Benz Center.

X Avoid high engine loads (e.g. driving uphill) and stop-and-go

driving.

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Possible causes/consequences and X Solutions The coolant temperature has exceeded 248‡ (120†). X Stop in a safe location as soon as possible and allow the engine

and coolant to cool down.

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258 What to do if …

Problem ? The red coolant

temperature warning lamp comes on when the engine is running and an acoustic warning sounds.

G Warning! Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could be seriously burned. Steam from an overheated engine can cause serious burns which can occur just by opening

the engine hood. Stay away from the engine if you see or hear steam coming from it. Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down.

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What to do if … 259

Tires

Problem h USA only:

Combination low tire pressure telltale/TPMS malfunction telltale for the TPMS illuminates continuously. Canada only: Low tire pressure telltale for the Advanced TPMS illuminates continuously.

h USA only:

Combination low tire pressure telltale/TPMS malfunction telltale for the TPMS flashes 60
seconds and then stays illuminated.

Possible causes/consequences and X Solutions The TPMS (USA only) or Advanced TPMS (Canada only) detects a loss of pressure in at least one tire. X Carefully bring the vehicle to a halt, avoiding abrupt steering and

braking maneuvers. Observe the traffic situation around you.

X Read and observe messages in the multifunction display

(Y page 228).

If the tire inflation pressure in the respective tire(s) has (have) been corrected, the combination low tire pressure/TPMS malfunction telltale goes out after a few minutes of driving.

There is a malfunction in the TPMS. X Read and observe messages in the multifunction display

(Y page 228).

Center.

X Have the TPMS checked at an authorized Mercedes-Benz

After the malfunction has been remedied, the combination low tire pressure/TPMS malfunction telltale goes out after a few minutes of driving.

G Warning! Each tire, including the spare (if provided), should be checked at least once a month when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the Tire and Loading Information placard on the driver’s door B- pillar or the tire inflation pressure label on the inside of the fuel filler flap. If your vehicle has tires of a different size than the size indicated on the Tire and Loading Information placard or the tire inflation pressure label, you should determine the proper tire inflation pressure for those tires.

As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires are significantly underinflated. Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly underinflated tire causes the tire to overheat and can lead to tire failure. Underinflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. Please note that

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the TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure, even if underinflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale. USA only: Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when the system is not operating properly. The TPMS malfunction indicator is combined with the low tire pressure telltale. When the system detects a malfunction, the telltale will flash for approximately 1 minute and then remain continuously illuminated. This

sequence will continue upon subsequent vehicle start-ups as long as the malfunction exists. When the malfunction indicator is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly.

Possible causes/consequences and X Solutions The system is malfunctioning. X Have the system checked as soon as possible at an authorized

Mercedes-Benz Center.

X Read and observe messages in the multifunction display and

follow corrective steps (Y page 228).

Lamp in center console Problem

04
The front passenger front air bag off indicator lamp illuminates and remains illuminated with the weight of a typical adult or someone larger than a small individual on the front passenger seat.

G Warning! If the 04 indicator lamp illuminates and remains illuminated with the weight of a typical adult or someone larger

than a small individual on the front passenger seat, do not have any passenger use the front passenger seat until the system has been repaired.

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Problem

04
The front passenger front air bag off indicator lamp does not illuminate and/or does not remain illuminated with the weight of a typical 12-month-old child in a standard child restraint or less on the front passenger seat.

Unlocking/locking manually

261

Possible causes/consequences and X Solutions The system is malfunctioning. X Make sure there is nothing between seat cushion and child seat

and check installation of the child seat.

X Make sure no objects applying supplemental weight onto the

seat are present.

X Make sure no objects which apply forces to the seat are present

(e.g. objects such as books, briefcases etc. lodged behind or around the seat, head restraints pushing against roof etc.). The system may recognize such forces as supplemental weight.

X If the front passenger front air bag off indicator lamp remains

out, have the system checked as soon as possible at an authorized Mercedes-Benz Center. Do not transport a child on the front passenger seat until the system has been repaired. X Read and observe messages in the multifunction display and

follow corrective steps (Y page 228).

G Warning! If the 04 indicator lamp does not illuminate or remains out with the weight of a typical 12-month-old child in a standard child restraint or less on the front passenger seat, do not transport a child on the front passenger seat until the system has been repaired.

Unlocking/locking manually Unlocking the vehicle If you cannot unlock the vehicle with the SmartKey or with KEYLESS-GO, unlock the driver’s door and the trunk using the mechanical key. The anti-theft alarm system will trigger when you Runlock the driver’s door or the trunk with

the mechanical key and

Ropen the driver’s door or the trunk To cancel the alarm, insert the SmartKey into the starter switch.

Removing the mechanical key

SmartKey

SmartKey with KEYLESS-GO

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262 Unlocking/locking manually

X Move locking tab : in the direction of

arrow.

X Slide mechanical key ; out of the housing.

Unlocking the driver’s door

X Insert mechanical key ; into the driver’s

door lock.

X Turn mechanical key ; counterclockwise to position 1 until the locking knob moves up. The driver’s door is unlocked.

X Pull the door handle to open the driver’s

door.

X Turn mechanical key ; back and remove

it from the driver’s door lock.

Unlocking the trunk A minimum height clearance of 5.9 ft (1.8 m) is required to open the trunk lid.

X Insert mechanical key : into the trunk lid

lock.

X Turn mechanical key : counterclockwise to position 3 and hold it in this position.

X Pull handle ; and lift the trunk lid. ! When you open the trunk, the trunk lid swings open upwards. Always make sure there is sufficient overhead clearance.

X Turn mechanical key : back and remove

it from the trunk lid lock.

Locking the vehicle If you cannot lock the vehicle with the SmartKey or with KEYLESS-GO, lock it as follows: X Open the driver’s door. X Close the passenger door, the rear doors,

and the trunk.

X Press the central locking switch

(Y page 71).

X Check to see whether the locking knobs on

the doors have moved down.

X If necessary, push them down manually. X Remove the mechanical key from the

SmartKey (Y page 261).

X Check whether the trunk is locked. X If it is not locked, lock it with the

mechanical key (Y page 75). Except for the driver’s door, the vehicle should now be locked.

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X Insert mechanical key ; into the driver’s

door lock.

X Turn mechanical key ; clockwise to

position 1. The driver’s door is locked.

X Turn mechanical key ; back and remove

it from the driver’s door lock.

i This procedure does not arm the anti-

theft alarm system, nor does it lock the fuel filler flap.

Manually unlocking the gear selector lever If the vehicle’s electrical system is malfunctioning, the gear selector lever could remain locked in park position P. In this case the gear selector lever can be unlocked manually, e.g. to tow the vehicle. X Engage the parking brake.

Unlocking/locking manually

263

X Pull gear selector lever cover : out and

remove.

X Simultaneously push down release ; and

move the gear selector lever out of park position P. The gear selector lever is unlocked.

i The gear selector lever is locked again as soon as you move it back to park position P.

Fuel filler flap G Warning! Avoid contact with the vehicle walls as they may contain sharp edges. Otherwise, you could injure yourself while releasing the fuel filler flap. In case the central locking system does not release the fuel filler flap, you can open it manually. The fuel filler flap release is located on the passenger side in the trunk behind the side trim panel. X Open the trunk (Y page 71). X Remove side trim panel. i Removing the side trim panel is a

demanding process. We recommend that you contact Roadside Assistance (Y page 166) if you do not feel to have the ability to perform this process.

! Do not use sharp objects to loosen the

gear selector lever cover in the center console, as this could damage the gear selector lever cover or the center console. X Insert a flat, blunt object into the left edge

of gear selector lever cover : at the positions indicated by the arrows.

X Loosen gear selector lever cover : using

this object.

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264 Replacing SmartKey batteries

X Pull fuel filler flap release : in direction of

arrow. The fuel filler flap is unlocked.

X Open the fuel filler flap (Y page 176). X Reinstall side trim panel. X Close the trunk.

Resetting activated NECK-PRO active front head restraints

If the NECK-PRO active front head restraints have been triggered in a rear-end collision, they must be reset. You can tell that the NECK-PRO active front head restraints have been triggered when they have been moved forward and cannot be adjusted. G Warning! For safety reasons, have the NECK-PRO active front head restraints checked at an authorized Mercedes-Benz Center after a rear-end collision. G Warning! When pushing back the head restraint cushion, make sure your fingers do not become caught between the head restraint cushion and the cover. Failing to do so may lead to injury.

! Be careful not to damage upholstery.

i For your convenience, we recommend that you have this work carried out at an authorized Mercedes-Benz Center.

X Take reset tool : out of the Mercedes-

Benz literature pouch.

X Guide reset tool : into rectangular opening = between head restraint cushion ; and head restraint cover.

X Press reset tool : downward in direction of arrow until you hear the head restraint release mechanism audibly engage.

X Pull out reset tool :. X Firmly press the head restraint

cushion ; backward towards the head restraint cover in direction of arrow until it engages.

X Repeat this procedure for the second front

seat.

X After resetting the NECK-PRO active front head restraints store reset tool : in the Mercedes-Benz literature pouch.

For information on NECK-PRO active front head restraints, see “NECK-PRO active front head restraints” (Y page 50). For information on head restraint adjustment, see “Seats” (Y page 77).

Replacing SmartKey batteries

If the batteries in the SmartKey are discharged, the vehicle can no longer be locked or unlocked. It is recommended to have the batteries replaced at an authorized Mercedes-Benz Center.

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G Warning! Batteries contain poisonous and corrosive substances. Therefore, keep the batteries out of reach of children. If a battery is swallowed, seek medical help immediately. G Warning! SmartKey batteries contain perchlorate material, which may require special handling and regard for the environment. Check with your local government’s disposal guidelines. California residents, see www.dtsc.ca.gov/ HazardousWaste/Perchlorate/ index.cfm. Batteries contain materials that can harm the environment if disposed of improperly. Recycling of batteries is the preferred method of disposal. Many states (USA only) or provinces (Canada only) require sellers of batteries to accept old batteries for recycling. When inserting the batteries, make sure they are clean and free of lint. When replacing batteries, always replace both batteries. i The required replacement batteries are

available at any authorized Mercedes-Benz Center.

Replacement batteries: Lithium, type CR 2025 or equivalent. X Remove the mechanical key from the

SmartKey (Y page 261).

Replacing SmartKey batteries

265

SmartKey

X Press mechanical key ; into the SmartKey

opening until battery compartment cover : opens. Do not keep the cover shut.

X Remove the battery compartment cover. X Pat the SmartKey against the palm of your

hand until battery = falls out.

X Insert the new battery with the positive

terminal (+) facing up. Use a lint-free cloth. X Insert the tabs of the battery compartment cover into the housing and press the cover closed.

X Slide mechanical key : back into the

SmartKey.

X Check the operation of the SmartKey.

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266 Replacing bulbs

SmartKey with KEYLESS-GO

X Insert mechanical key : into opening. X Press mechanical key : in direction of

arrow. Battery compartment ; is unlatched. X Pull battery compartment ; out of the

SmartKey housing.

X Pull out batteries =. X Insert new batteries = under contact

springs ? with the positive terminal (+) side facing up.

X Return battery compartment ; into

SmartKey housing until it locks into place.

X Slide mechanical key : back into the

SmartKey.

X Check the operation of the SmartKey as

well as the KEYLESS-GO function.

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Replacing bulbs Safety notes Safe vehicle operation depends on proper exterior lighting and signaling to a large degree. Correct headlamp adjustment is extremely important. Have headlamps checked and readjusted at regular intervals and when a bulb has been replaced. Contact an authorized Mercedes-Benz Center for headlamp adjustment. G Warning! Bulbs and bulb sockets can be very hot. Allow the lamp to cool down before changing a bulb. Keep bulbs out of reach of children. Halogen lamps contain pressurized gas. A bulb can explode if you Rtouch or move it when hot Rdrop the bulb Rscratch the bulb Wear eye and hand protection. Because of high voltage in Xenon lamps, it is dangerous to replace the bulb or repair the lamp and its components. We recommend that you have such work done by a qualified technician. G Warning! The bulbs in the tail lamps cannot be replaced individually. The tail lamp bulbs are under pressure and could explode during an attempt to replace them. If the tail lamps are malfunctioning, have them replaced at an authorized Mercedes-Benz Center.

i Since replacing bulbs is a technically

highly demanding process, we recommend to have them replaced at an authorized Mercedes-Benz Center.

i If the headlamps or front fog lamps are fogged up on the inside as a result of high

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Replacing bulbs

267

humidity, driving the vehicle a distance with the lights on should clear up the fogging.

Bulbs You can replace the following bulbs yourself: Halogen headlamps

Type : Turn signal lamp: 3457AK ; High-beam lamp: H7 55 W = Parking and standing lamp: W 5 W ? Low-beam lamp: H7 55 W

Bi-Xenon headlamps

Type : Turn signal lamp: 3457AK ; High-beam lamp: H7 55 W

License plate lamps

Type : License plate lamps: C 5 W

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268 Replacing bulbs

Notes on bulb replacement ! Do not replace LEDs or bulbs not described in this section. You could otherwise damage the LEDs, the bulbs or parts of the vehicle. Only have the LEDs and bulbs replaced at an authorized Mercedes- Benz Center. G Observe Safety notes, see page 266. ROnly use 12-volt bulbs of the same type and with the specified watt rating.

RSwitch the lights off before changing a bulb

to prevent short circuits.

RAlways use a clean lint-free cloth when

handling bulbs.

RYour hands should be dry and free of oil and

grease.

RIf the newly installed bulb does not come on, contact an authorized Mercedes-Benz Center.

i Mercedes-Benz recommends using

Longlife (LL) bulbs.

Replacing bulbs for front lamps G Warning! Do not remove the cover for the Bi-Xenon headlamp. Because of high voltage in Xenon lamps, it is dangerous to replace the bulb or repair the lamp and its components. It is recommended to have such work done by a qualified technician. Before you start to replace a bulb for a front lamp, do the following: X Switch off the ignition. X Turn the exterior lamp switch to position

$.

X Open the hood (Y page 178).

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: Housing cover for low-beam halogen or Bi-

Xenon headlamp

; Housing cover for high-beam headlamp/

high-beam flasher bulb and for parking and standing lamp bulb

= Bulb socket for turn signal lamp bulb ? Bulb socket for high-beam bulb A Bulb socket for parking and standing lamp

bulb

B Bulb socket for low-beam bulb

Low-beam bulb (halogen headlamps only) X Turn housing cover : counterclockwise

and remove it.

X Turn bulb socket B with the bulb counterclockwise and remove it.

X Pull the bulb out of bulb socket B. X Gently press the new bulb into bulb socket

B.

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X Place bulb socket B back into the housing

and turn it clockwise until it engages.

X Align housing cover : and turn it

clockwise until it engages.

High-beam and high-beam flasher bulb (halogen headlamps only)/high-beam flasher bulb (Bi-Xenon headlamps only) X Turn housing cover ; counterclockwise

and remove it.

X Turn bulb socket ? with the bulb counterclockwise and remove it.

X Pull the bulb out of bulb socket ?. X Gently press the new bulb into bulb

socket ?.

X Place bulb socket ? back into the housing

and turn it clockwise until it engages.

X Align housing cover ; and turn it

clockwise until it engages.

Front turn signal lamp bulb X Turn bulb socket = with the bulb counterclockwise and remove it.

X Gently press onto the bulb and turn it

counterclockwise out of bulb socket =.

X Gently press the new bulb into bulb socket = and turn it clockwise until it engages. X Place bulb socket = back into the housing

and turn it clockwise until it engages.

Parking and standing lamp bulb Halogen headlamps X Turn housing cover ; counterclockwise

and remove it.

X Pull out bulb socket A with the bulb. X Pull the bulb out of bulb socket A. X Gently press the new bulb into bulb socket

A.

X Press bulb socket A back into the lamp. X Align housing cover ; and turn it

clockwise.

Replacing bulbs

269

Bi-Xenon headlamps In vehicles with Bi-Xenon headlamps, the bulbs of the parking and standing lamps are LEDs. ! Do not replace the LEDs yourself. You

could otherwise damage the LEDs or parts of the vehicle. Only have the LEDs replaced at an authorized Mercedes-Benz Center.

Replacing bulbs for rear lamps Tail lamp unit The tail lamps are equipped with HiP bulbs and LEDs. Have them replaced at an authorized Mercedes-Benz Center. G Observe Safety notes, see page 266. License plate lamps

X Switch off the ignition. X Turn the exterior lamp switch to position

$.

X Open the trunk. X Loosen screws : of lamp cover to be

removed.

X Remove lamp cover ;. X Replace the bulb. X Reinstall lamp cover ;. X Retighten screws :.

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270 Replacing wiper blades

Replacing wiper blades Safety notes G Warning! For safety reasons, switch off the wipers and remove the SmartKey from the starter switch (vehicles with KEYLESS-GO: Make sure the vehicle’s on-board electronics have status 0) before replacing a wiper blade. Otherwise, the wiper motor could suddenly turn on and cause injury. G Warning! Wiper blades are components that are subject to wear and tear. Replace the wiper blades twice a year, preferably in the spring and fall. Otherwise the windshield will not be wiped properly. As a result, you may not be able to observe surrounding traffic conditions and could cause an accident.

! To avoid damage to the hood, the wiper arms should only be folded forward when in the vertical position.

! Never open the hood when a wiper arm is

folded forward. Hold on to the wiper when folding a wiper arm back. If released, the force of the impact from the tensioning spring could crack the windshield. Do not allow a wiper arm to contact the windshield glass without a wiper blade inserted. Mercedes-Benz recommends that you have this work carried out at an authorized Mercedes-Benz Center.

Placing wiper arms in vertical position

Wiper arms in vertical position X Make sure the hood is fully closed.

Vehicles with SmartKey X Turn the SmartKey in the starter switch to

position 1.

X Turn the combination switch to wiper

setting °.

X With wiper arms in vertical position, turn

the SmartKey in the starter switch to position 0.

X Remove the SmartKey from the starter

switch.

Vehicles with KEYLESS-GO X Turn off the engine.

With the driver’s door closed, the starter switch is now in position 1.

X Turn the combination switch to wiper

setting °.

X With wiper arms in vertical position, open

the driver’s door. The starter switch is set to position 0, same as the SmartKey removed from the starter switch.

X Turn the combination switch to wiper

setting $.

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Removing wiper blades ! Do not pull on the wiper blade inserts.

They could tear.

X Fold the wiper arm forward until it snaps

into place.

X Turn the wiper blade at a right angle to

wiper arm.

X Slide the wiper blade sideways out of the

retainer.

Installing wiper blades X Slide the wiper blade onto the wiper arm

until it locks in place.

X Rotate the wiper blade into a position

parallel to the wiper arm.

X Fold the wiper arm backward to rest on the

windshield. Make sure you hold on to the wiper when folding the wiper arm back.

! Make sure the wiper blades are installed properly. Improperly installed wiper blades may cause windshield damage.

Flat tire Safety notes Your vehicle may be equipped with a Minispare wheel or a spare wheel with collapsible tire.

Flat tire 271

For information on your vehicle’s equipment, see “Rims and tires” (Y page 291). G Warning! The dimensions of the spare wheel are different from those of the road wheels. As a result, the vehicle handling characteristics change when driving with a spare wheel mounted. Adapt your driving style accordingly. The spare wheel is for temporary use only. When driving with a spare wheel mounted, ensure proper tire inflation pressure and do not exceed a vehicle speed of 50 mph (80 km/h). Contact the nearest authorized Mercedes- Benz Center as soon as possible to have the spare wheel replaced with a regular road wheel. Never operate the vehicle with more than one spare wheel mounted. Do not switch off the ESP® when a spare wheel is mounted.

Preparing the vehicle X Whenever possible, park the vehicle in a

safe distance from moving traffic on a hard, flat surface.

X Turn on the hazard warning flasher. X Turn the steering wheel so that the front wheels are in a straight-ahead position.

X Engage the parking brake. X Shift the automatic transmission into park

position P.

X Turn off the engine. X Remove the SmartKey from the starter

switch.

or X Vehicles with KEYLESS-GO: Open the

driver’s door (this puts the starter switch in position 0, same as with the SmartKey removed from the starter switch). The driver’s door can then be closed again.

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272 Flat tire

Open doors only when conditions are safe to do so.

X Have any passenger exit the vehicle at a

safe distance from the roadway. Open doors only when conditions are safe to do so.

Mounting the spare wheel Introduction X Prepare the vehicle as described

(Y page 271).

X Take the following out of the vehicle:

Rspare wheel Rjack Rvehicle tool kit Rwheel wrench Relectric air pump (required for vehicles

with spare wheel with collapsible tire only)

For information on where to find the respective items, see “Where will I find ...?” (Y page 224) and (Y page 226). i Vehicles without spare wheel are not

factory-equipped with the tools required for a wheel change such as a jack or a wheel wrench. Some tools required for a wheel change are specific to your vehicle. Contact an authorized Mercedes-Benz Center to obtain the tools approved for your vehicle. This section describes the wheel change using the tools approved and recommended for your vehicle.

Removing tensioning straps from spare wheel This description applies to vehicles with 19" spare wheel with collapsible tire only. A 19" spare wheel with collapsible tire has two tensioning straps on it that must be removed before mounting the spare wheel.

X Press on both clips ; simultaneously to

release buckle :.

X Store the tensioning straps in a safe place. You will need them to store the spare wheel in the trunk after use (Y page 226).

Lifting 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 jack take-up brackets built into both sides of the vehicle. Make sure the jack arm is fully seated in the jack take-up bracket. 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 engage the parking brake firmly and block the wheels with wheel chocks or other sizeable objects before raising the vehicle

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Flat tire 273

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 to support the jack. 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 Prevent the vehicle from rolling away by

blocking wheels with wheel chocks or other sizeable objects. When your vehicle is equipped with a wheel chock, it is included with the vehicle tool kit (Y page 224). For information on setting up the collapsible wheel chock, see (Y page 225).

When changing a wheel on a level surface: X Place a wheel chock or other sizeable

object in front of and another wheel chock or other sizeable object behind the wheel that is diagonally opposite to the wheel being changed.

Always try lifting the vehicle using the jack on a level surface. However, should circumstances require you to do so on a hill: X Place wheel chocks or other sizeable

objects on the downhill side in front of both wheels on the side opposite to the side on which the wheel is to be changed. G Warning! Only jack up the vehicle on level ground or on slight inclines/declines. Otherwise, the vehicle could fall off the jack and injure you or others.

X On the wheel to be changed, loosen but do

not yet remove the wheel bolts (approximately one full turn with wheel wrench :).

The jack take-up brackets are located directly behind the front wheel housings and in front of the rear wheel housings. G Warning! The jack is designed exclusively for jacking up the vehicle at the jack take-up brackets. Make sure the jack arm is fully seated in the jack take-up bracket. If you do not position the jack correctly in the jack take-up bracket, the vehicle can fall off the jack and seriously or fatally injure you or others.

! Do not position the jack on the body of the vehicle, as this may cause damage to the vehicle.

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Attaching the spare wheel 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. 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 Clean contact surfaces of wheel and wheel

hub.

! To avoid paint damage, place wheel flat

against hub and hold it there while installing first wheel bolt.

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274 Flat tire

X Place jack = on firm ground. X Position jack = under take-up

bracket ; so that it is always vertical as seen from the side, even if the vehicle is parked on an incline.

X Turn crank ? clockwise until jack = is

fully seated in take-up bracket ; and the jack base evenly meets the ground.

X Jack up the vehicle until the wheel is a

maximum of 1.2 in (3 cm) from the ground.

Removing the wheel

X Unscrew the uppermost wheel bolt and

remove it.

X Replace this wheel bolt with alignment

bolt :.

X Remove the remaining bolts. ! Do not place wheel bolts in sand or dirt. This could result in damage to the wheel bolts and wheel hub threads.

X Remove the wheel.

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X Guide the spare wheel onto the alignment

bolt and push it on.

X Insert the wheel bolts and tighten them

slightly.

The following description applies to both versions. Differences in usage are expressly declared.

Flat tire 275

X Unscrew the alignment bolt. X Install the last wheel bolt and tighten it

slightly.

X Vehicles with spare wheel with

collapsible tire: Continue the procedure by following the instructions under “Inflating the collapsible tire” (Y page 275) and then “Lowering the vehicle” (Y page 276).

or X Vehicles with Minispare wheel: Continue the procedure by following the instructions under “Lowering the vehicle” (Y page 276).

Inflating the collapsible tire G Warning! Inflate collapsible tire only after the wheel is properly attached. Inflate the collapsible tire using the electric air pump before lowering the vehicle. G Warning! Observe safety instructions on air pump label.

! Do not lower the vehicle before inflating the collapsible tire. Otherwise the rim may be damaged.

Your vehicle may be equipped with either of two versions of the electric air pump: RVersion 1: The air hose with pressure

gauge and the electrical plug are located behind a flap.

RVersion 2: The pressure gauge is located

in the pump housing. The air hose and electrical plug are located at the bottom of the pump housing.

Version 1

Version 2
X Version 1 only: Open flap : on electric

air pump.

X Version 1 only: Pull out electrical plug

= and air hose with pressure gauge and vent screw ?.

X Version 2 only: Pull electrical plug = and

the air hose out of the pump housing bottom.

X Version 1 only: Close vent screw on air

hose ?.

X Remove the valve cap from the collapsible

tire valve.

X Screw union nut A onto the collapsible tire

valve.

X Make sure air pump switch ; is set to 0. X Insert electrical plug = into the cigarette

lighter socket (Y page 163) or a power outlet (Y page 163).

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276 Flat tire

X Turn the SmartKey in the starter switch to

position 1.

or X Vehicles with KEYLESS-GO: Press the

KEYLESS-GO start/stop button once. Do not depress the brake pedal.

X Press I on electric air pump switch ;. The electric air pump switches on and inflates the collapsible tire.

X Inflate the collapsible tire to the

recommended tire inflation pressure as specified for your vehicle (Y page 296). This should take approximately 5 minutes. 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

longer than 8 minutes without interruption. Otherwise it may overheat. You may operate the air pump again after it has cooled off.

! Compare the recommended tire inflation

pressure for your vehicle with the tire inflation pressure on the yellow label located on the spare wheel rim. If the tire inflation pressure on the yellow label on the spare wheel rim differs from the values given in this Operator’s Manual, inflate the tire to the recommended tire inflation pressure given on the yellow label on the spare wheel rim.

X Press 0 on electric air pump switch ;. X Turn the SmartKey in the starter switch to

position 0.

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pressure as specified for your vehicle (Y page 296), decrease tire pressure using the vent screw on air hose ?.

X Version 2 only: If the tire inflation pressure

is above the recommended tire inflation pressure as specified for your vehicle (Y page 296), decrease tire pressure using deflate button B. G Observe Safety notes, see page 185. X Detach the electric air pump. X Reinstall collapsible tire valve cap. X Version 1 only: Store electrical plug =

and air hose ? behind flap :.

X Version 2 only: Store electrical plug =

and the air hose back into the pump housing bottom.

X Place the electric air pump back in its

designated storage space.

X Lower 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 Lower the vehicle by turning the crank

counterclockwise until the vehicle is resting fully on its own weight.

X Remove the jack.

or X Vehicles with KEYLESS-GO: Press the

KEYLESS-GO start/stop button twice. Do not depress the brake pedal.

X Version 1 only: If the tire inflation pressure

is above the recommended tire inflation

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X Tighten the five wheel bolts evenly,

following the diagonal sequence illustrated (: to A), until all bolts are tight. Observe a tightening torque of 96 lb-ft (130 Nm). G Warning! Have the tightening torque checked after changing a wheel. The wheels could come loose if they are not tightened to a torque of 96 lb-ft (130 Nm).

X Fully collapse the jack, with handle folded

in (storage position), see (Y page 225).

X Store the jack and the other vehicle tools

in the designated storage space.

X Wrap the damaged wheel in the protective wrap that comes with the spare wheel and put the wheel in the trunk. You can also place the damaged wheel down into the spare wheel well. In this case, you must store the luggage bowl in the trunk.

For information on storing the spare wheel after it has been replaced by a regular road wheel, see (Y page 226). i Vehicles with TPMS or Advanced TPMS: Do not restart the tire inflation pressure monitor until a full size wheel/tire with functioning sensor has been placed back into service on the vehicle.

MOExtended system The MOExtended system allows you to continue driving your vehicle even if there is a total loss of pressure in one or more tires. You may only use the MOExtended system in conjunction with the tire pressure loss warning system (Y page 186), the TPMS (Y page 188), or the Advanced TPMS (Y page 190). The maximum distance in emergency mode depends on the vehicle’s load. It is 50 miles (80 km) if the vehicle is partially loaded and 18 miles (30 km) if the vehicle is fully loaded. The point at which the maximum driving

Flat tire 277

distance in emergency mode begins is when the warning message appears in the multifunction display indicating that there is a loss of tire inflation pressure. X Do not exceed the maximum speed of

50 mph (80 km/h). G Warning! In emergency mode, your vehicle’s driving characteristics are diminished in such situations as: Rdriving around curves Rwhile braking Rwhile accelerating rapidly Therefore, your driving style must be adapted accordingly. Avoid abrupt steering and driving maneuvers, as well as driving over obstacles (road curbs, potholes, or off-road areas). This is especially important if the vehicle is heavily loaded. The emergency driving distance that can be achieved greatly depends on the demands placed on the vehicle. Depending on speed, load, driving maneuvers, road conditions, outside temperature, etc., the distance can be significantly shorter or, if the vehicle is driven cautiously, somewhat longer. Do not continue driving in emergency mode if Ryou notice knocking sounds Rthe vehicle starts to shake Rsmoke develops and you smell rubber RESP® is intervening continuously Ryou notice tears on the tire sidewalls After driving in emergency mode, you must have the rims inspected by an authorized Mercedes-Benz Center to check if they are suitable for further use. The failed tire must be replaced in any case. When replacing individual or all tires on the vehicle, make sure only tires marked with “MOExtended” are mounted in the size specified for your vehicle (Y page 291).

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278 Battery

Battery Safety notes A battery should always be sufficiently charged in order to achieve its rated service life. Refer to Maintenance Booklet for battery maintenance intervals. If you use your vehicle mostly for short- distance trips, you will need to have the battery charge checked more frequently. When replacing a battery, always use a battery approved by Mercedes-Benz. If you do not intend to operate your vehicle for an extended period of time, contact an authorized Mercedes-Benz Center about steps you need to observe. G Warning! Observe all safety instructions and precautions when handling automotive batteries.

Risk of explosion.

Fire, open flames and smoking are prohibited when handling batteries. Avoid creating sparks. Battery acid is caustic. Do not allow it to come into contact with skin, eyes or clothing. Wear suitable protective clothing, especially gloves, apron and faceguard. Wear eye protection. Rinse any acid spills immediately with clear water. Contact a physician if necessary.

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Keep children away.

Follow the instructions in this Operator’s Manual.

A battery contains materials that can harm the environment if disposed of improperly. A large 12 V storage battery contains lead. Recycling of the battery is the preferred method of disposal. Many states (USA only) or provinces (Canada only) require sellers of batteries to accept the old battery for recycling. 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 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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Battery

279

Do not rub the battery with rags or cloths. The battery could explode if touched due to electrostatic charge or due to spark formation.

! The battery is a Valve-Regulated Lead Acid (VRLA) battery, also referred to as “fleece” battery. Such batteries do not require topping-up of the electrolyte level. VRLA batteries therefore do not have cell caps and the battery cover is non-removable. Do not attempt to open the battery as otherwise the battery will be damaged. VRLA batteries do not require topping-up of the electrolyte level. They cannot be opened to check the electrolyte level. However, the battery condition must be checked periodically by performing a battery conductance test. Refer to Maintenance Booklet for battery condition testing intervals. The factory-equipped battery may only be replaced with a battery that Rhas the same security features Ris of identical size Ris of identical voltage Ris of identical capacity

! As any other battery, the battery may

discharge if you do not operate the vehicle for an extended period of time. Have the battery disconnected at a qualified workshop or an authorized Mercedes-Benz Center in such a case. You may also connect an accessory battery charge unit expressly approved by Mercedes-Benz for your vehicle model to maintain the battery charge. Contact an authorized Mercedes- Benz Center for further information. The battery, the battery ventilation hose and the lateral plug must always be securely installed when the vehicle is in operation.

! Never loosen or detach battery terminal clamps while the engine is running or the SmartKey is in the starter switch or KEYLESS-GO button is in position 1. Otherwise the alternator and other electronic components could be severely damaged. Have the battery checked regularly at an authorized Mercedes-Benz Center. Refer to Maintenance Booklet for maintenance intervals or contact an authorized Mercedes-Benz Center for further information.

i After battery power was interrupted, do

the following: RSynchronize the power windows

(Y page 95).

RSynchronize the tilt/sliding sunroof

(Y page 154).

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 could cause an explosion that may result in personal injury, paint damage or corrosion. 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 battery in accordance with the separate instructions for the accessory battery charger. Have the battery charged at an authorized Mercedes-Benz Center. If you charge the

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Jump starting

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battery yourself, follow the operating instructions for your charging device. Only use a battery charge unit with a maximum charging voltage of 14.8 V. X Charge battery in accordance with the

instructions of the battery charger manufacturer.

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.

! Do not tow-start the vehicle. You could

otherwise seriously damage the automatic transmission which is not covered by the Mercedes-Benz Limited Warranty.

! Jump starting should only be performed using the jump-start terminals located in the engine compartment. Avoid repeated and lengthy starting attempts. Do not attempt to start the engine using a battery quick-charge unit.

If the engine does not run after several unsuccessful starting attempts, have it checked at the nearest authorized