2009 Mercedes-benz M Class Owners Manual

RCheck the engine oil level (Y page 241).

Only with a proper oil level can the vehicle obtain a trouble-free oil supply, even on steep gradients.

! If the engine oil level warning lamp comes on while driving, stop the vehicle in a safe location or as soon at is safe to do so. Check the engine oil level. The engine oil level warnings should not be ignored. Extended driving with the symbol displayed could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty.

Tires RCheck the tread depth and maintain

specified tire inflation pressure (a placard with the recommended tire inflation pressures is located on the driver’s door B- pillar (Y page 248)).

RCheck tires for possible damage and

remove foreign objects.

RReplace missing valve caps.

Operation

Driving instructions

Rims RDented or bent rims can cause tire inflation pressure loss and damage the tire beads. For this reason, check and, if necessary, change rims before driving off-road.

Vehicle tool kit RCheck if the vehicle jack (Y page 301) is

functional.

RIn all cases take the vehicle tool kit, a

strong tow rope, a shovel and a small plank (to put under the vehicle jack on sandy soil) with you.

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Operation

Driving instructions Driving in steep terrain

Slope angle 1 Overhang angle, front 2 Overhang angle, rear Vehicles with steel suspension

117 2

27°

22°

26°

17 Vehicles with AMG Sport-Package 278

Vehicles with air suspension program

117 2

Raised level

Highway

31°

25°

ML 63 AMG

Raised level

Highway

25°

18°

25°

20°

29°

24°

27°

22°

RComply with the warnings (Y page 275) and

rules for off-road driving (Y page 276).

RDriving on embankments, slopes and other steep inclines should only be done straight up or downhill, i. e. in the line of gravity. Maximum vehicle climbing ability is a 100% grade which is equivalent to a slope angle of 45°. Keep in mind that the climbing ability of the vehicle depends on terrain conditions.

RShift automatic transmission into gear

range 1 (Y page 133).

RDrive slowly.

RAvoid excessive engine speeds – drive with moderate engine speeds (max. 3 000 rpm).

RUtilize the engine’s braking power when descending a slope, observe the engine speed (do not overrev the engine). Apply the service brake as needed.

i For maximum engine speed, see

“Instrument cluster” (Y page 32) and see “Engine” (Y page 399).

RCheck the brakes after a lengthy

downgrade drive. G Warning! Never turn the vehicle around on steep inclines. The vehicle might roll over. If the vehicle cannot complete the attempted climb, back it down in reverse gear.

i The hill start assist system supports you

when driving uphill. For more information, see “Hill start assist system” (Y page 133).

Traction in steep terrain The maximum vehicle climbing ability is a 100% grade which is equivalent to a slope angle of 45°. Keep in mind that the climbing

ability of the vehicle depends on terrain conditions. Be easy on the accelerator and watch for continuous wheel traction when driving in steep terrain. i The 4-ETS helps greatly when starting out

on a steep incline when the front wheels have then the tendency to slip due to the weight shifting towards the rear axle. The 4-ETS recognizes the situation and limits the torque for the front wheels by braking them. Simultaneously the torque for the rear wheels is increased.

Driving across a hilltop Decelerate just ahead of a hilltop (do not shift automatic transmission into neutral position N), to prevent the vehicle from speeding up too much after climbing a hill. Use the momentum of the vehicle to drive across the hilltop. After climbing a hill, driving in this manner prevents the vehicle from: Rlosing ground contact when cresting hills Rlosing its forward momentum Rspeeding up too much after climbing the hill

Driving downhill RDrive slowly. RDo not drive at an angle to the incline. Steer

into the line of gravity and drive with the front wheels pointing straight downhill. Otherwise, the vehicle may slide sideways off the path and roll over.

RShift automatic transmission into gear

range 1 (Y page 133).

ROn steep inclines, use the Downhill Speed

Regulation (Y page 166).

RUtilize the engine’s braking power to

reduce vehicle speed. If this is insufficient, apply the brakes gently. Make sure the vehicle is moving in the line of gravity.

RCheck the brakes after a lengthy

downgrade drive.

i The special Off-road ABS (Y page 77)

setting allows for precise and brief (cyclical) blocking of the front wheels, permitting them to dig into loose ground. Remember that, when stopped, the front wheels slide across a surface and thus lose their ability to steer the vehicle.

Operation

Driving instructions

Driving through water

1 Fording depth Vehicles with steel suspension or air suspension program (raised level)

Vehicles with BlueTEC

14 in (35 cm)

All other vehicles

20 in (50 cm)

RBefore driving through water, determine its

depth.

! The water depth must not exceed the respective value listed in the table. The

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otherwise enter the vehicle interior and damage the vehicle’s electronics, as well as the interior equipment.

RThere is a very high level of driving

resistance in water. The surface is slippery and may not be firm, making pulling away in water difficult and dangerous.

RMake sure that only small bow waves are formed when driving the vehicle through water.

RClean mud off the tire tread after driving

through water.

RTo dry the brakes, apply pressure to the brake pedal several times while driving after leaving the water.

Crossing obstacles

Operation

Driving instructions

ground under the water might not be firm which could result the water being deeper than expected when driving the vehicle through it. Please note that the water level is correspondingly lower for flowing water.

RVehicles with air suspension program:

Select the highest vehicle level possible (Y page 171).

RSwitch to off-road driving program

(Y page 169) before driving through water.

RShift automatic transmission into gear

range 1 or 2 (Y page 133). RAvoid high engine speeds. REnter and leave the water only at a shallow

spot, driving at walking speed.

! Never accelerate before driving into the water. The bow wave could force water into the engine and auxiliary equipment, thus damaging them.

RDrive through the water slowly and at a

constant speed.

RDo not stop vehicle while immersed in water, and do not shut off the engine.

! Do not open any of the vehicle’s doors while driving through water. Water could

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! Obstacles can damage the vehicle

underbody or suspension components. If possible use the assistance of a second person outside the vehicle to scout the path you intend to take and check for adequate ground clearance when you cross obstacles with your vehicle. The person assisting you outside the vehicle should always be a safe distance away from the vehicle and positioned so that he or she cannot get hurt in case of any unexpected vehicle movement. After off-road driving or crossing obstacles, inspect vehicle for any damage, especially vehicle underbody and suspension components. Failure to do so can adversely affect the vehicle’s future performance, including increased chance of an accident. When driving over tree stumps, big rocks and other obstacles, observe the following rules: RMake sure the off-road driving program

(Y page 169) is switched on.

RAvoid high engine speeds. RShift automatic transmission into gear

range 1 (Y page 133).

RCheck the vehicle clearance before

crossing obstacles.

RCross obstacles (e. g. tree stumps or big

rocks) very slowly by aiming one of the front wheels at the center of the obstacle, and repeat same with the rear wheel.

! Special attention is needed when you

cross obstacles on a steep incline. The vehicle could slide sideways as a result of its possible slanted position which in turn may result in the vehicle tipping or rolling over.

Set the raised level (Y page 171).

RAvoid high engine speeds. RShift automatic transmission into a gear range that is appropriate for the terrain. RIn sandy soil, drive at a steady speed as

conditions permit. This helps overcome the vehicle rolling resistance and reduce the likelihood of the vehicle sinking into the ground.

RDrive in tracks of other vehicles if they are

not too deep and you have sufficient clearance.

Driving on sand G Warning! Do not reduce the tire inflation pressure before driving through sand. However, if you do so, remember to correct the tire inflation pressure before continuing your trip. Driving with reduced tire inflation pressure increases the risk of losing control of the vehicle and rolling over. When driving on sand, observe the following rules: RVehicles with air suspension program:

Ruts A number of off-road tracks or other byways have deep ruts which can cause the underbody to come in contact with the ground. RMake sure the off-road driving program

(Y page 169) is switched on.

RVehicles with air suspension program:

Set the raised level (Y page 171).

Operation

Driving instructions ! Check that the ruts are not too deep and

your vehicle’s clearance is sufficient. Otherwise: Ryour vehicle may be damaged Rthe underbody of the vehicle may come in contact with the ground and you may get stuck

RAvoid high engine speeds. RShift automatic transmission into gear

range 1 (Y page 133).

RDrive next to the ruts rather than through

them if at all possible.

RIf the ruts are too deep to drive in, drive with one side of the vehicle on the grassy center strip if the route permits.

Returning from off-road driving 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.

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Operation

Driving instructions Inspect the tires and the vehicle underbody for possible damage. If the vehicle or tires appear unsafe, have the vehicle towed to the nearest authorized Mercedes-Benz Center or tire dealer for repairs. Off-road driving increases strain on the vehicle. We recommend that you inspect the vehicle for possible damage after each off-road trip. Recognizing any damage and a subsequent timely repair reduces the chance of a possible breakdown or accident later on. Proceed as follows: RSwitch off the off-road driving program

(Y page 170).

RSwitch off the DSR (Y page 167). RVehicles with air suspension program:

Lower the vehicle back to a level suitable for road conditions, e. g. highway/high- speed level (Y page 171).

RClean all exterior lamps and check for

possible damage.

RClean the front and rear license plate. RRemove excessive dirt from tires, wheels,

wheel housings, and underbody. For instance, after driving in mud, clean the radiator, chassis, engine, brakes, and

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wheels from extreme dirt using a strong jet of water.

RCheck tires for possible damage. RInspect vehicle underbody, oil pan, brake hoses, etc., as well as vehicle underbody for possible damage.

RCheck for brush or branches caught in the

underbody.

! Brush or branches could increase the

possibility of a fire, as well as cut fuel and/ or brake lines, puncture rubber bellows of the axles or drive shafts.

RAfter continued operation in mud, sand, water or other dirty conditions clean the brake discs, wheels, brake pads and check and clean axle joints. RConduct a brake test.

Trailer towing G Warning! Failure to use proper equipment and driving technique can result in a loss of vehicle control when towing a trailer. Improper towing or failure to follow the instructions in this manual can result in vehicle damage and/or serious personal injury. Follow the guidelines below carefully to assure safe trailer operation. Contact an authorized Mercedes-Benz Center should you require an explanation of information contained in this manual.

Trailer hitch ROnly install a trailer hitch receiver approved

for your vehicle. For information on availability and installation, contact an authorized Mercedes-Benz Center.

RThe bumpers on your vehicle are not

designed for use with clamp-type hitches.

Do not attach rental hitches or other bumper-type hitches to them.

RTo reduce the possibility of damage,

remove the hitch ball adapter from the receiver when not in use.

Electrical connections The vehicle is prewired to accept the seven- wire harness included in the Mercedes-Benz approved trailer hitch receiver kit. i A four-pole conversion plug is available

from your authorized Mercedes-Benz Center as a spare part.

For further information, contact an authorized Mercedes-Benz Center.

Vehicle and trailer weights and ratings The Gross Trailer Weight (GTW) is the weight of the trailer plus the weight of all cargo, equipment, luggage, etc. loaded on the trailer. The maximum permissible gross trailer weight to be towed: 7 200 lb (3 265 kg). Trailer Tongue Weight Rating (TWR) is the maximum permissible weight on the trailer tongue: 576 lb (261 kg) limit for Mercedes- Benz approved hitch receiver.

Loading a trailer RWhen loading a trailer, you should observe that neither the permissible GTW, nor the Gross Vehicle Weight Rating (GVWR) are exceeded. The GVWR is indicated on the certification label located on the driver’s door B-pillar (Y page 248). Maximum permissible values are listed on the safety compliance certification labels for the vehicle and for the trailer to be towed. The lowest value listed must be selected when determining how the vehicle and trailer are loaded.

RThe Tongue Weight (TW) at the hitch ball

must be added to the Gross Vehicle Weight (GVW) to prevent exceeding your Mercedes-Benz tow vehicle’s rear Gross Axle Weight Rating (GAWR). The GVW and GAWR are indicated on the certification label located on the driver’s door B-pillar (Y page 248).

i Mercedes-Benz recommend loading the trailer in such a manner that it has a TW between 8 % and 15 % of the GTW.

i Maximum trailer weight ratings are calculated assuming the vehicle, plus

Operation

Driving instructions

driver. The weight of other accessories, passengers and cargo will reduce the maximum trailer weight and TW your vehicle can tow.

Checking weights of vehicle and trailer RTo assure that the towing vehicle and trailer

are in compliance with the maximum permissible weight limits, have the loaded rig (towing vehicle including driver, passengers and cargo, trailer fully loaded) weighed on a commercial scale.

RCheck the vehicle’s front and rear Gross

Axle Weight (GAW), the Gross Trailer Weight (GTW) and Tongue Weight (TW). The values as measured must not exceed the weight limits listed under “Vehicle and trailer weights and ratings” (Y page 283).

Coupling a trailer G Warning! Vehicles with air suspension program: While you are coupling or decoupling a trailer, make sure nobody locks or unlocks the vehicle and/or opens or closes doors or the tailgate.

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Operation

Driving instructions The vehicle’s level could change and you could endanger yourself and/or others as a result. Make sure that you do not operate the ADS switch or the vehicle level control system when coupling/decoupling the trailer. Observe maximum permitted trailer dimensions (width and length). Most states and all Canadian provinces require Rsafety chains between the towing vehicle

and the trailer The chains should be criss-crossed under the trailer tongue. They must be attached to the hitch receiver, and not to the vehicle’s bumper or axle. Make sure to leave enough slack in the chains to permit turning corners.

Ra separate brake system at various trailer

weights

Ra break-away switch on trailers with a

separate brake system. Check with your local state laws for specific requirements. The switch activates the trailer brakes in the possible event that the trailer might separate from the tow vehicle.

284

! Do not connect a trailer brake system (if

trailer is so equipped) directly to the vehicle’s hydraulic brake system, as your vehicle is equipped with antilock brakes. If you do, neither the vehicle’s brakes nor the trailer’s brakes will function properly.

i The provided vehicle electrical wiring

harness for trailer towing has a brake signal wire for hook-up to a brake controller.

X Make sure the automatic transmission is in

park position P (Y page 130).

X Engage the parking brake for the vehicle

(Y page 127).

X Start the engine (Y page 122). X Vehicles with air suspension program:

Set the vehicle level to highway (Y page 171).

X Vehicles with air suspension program:

Set the ADS to AUTO or COMF (Y page 170).

X Turn off the engine (Y page 127). X Close all doors and the tailgate. X Attach the trailer. X Plug in all electrical connectors.

i Vehicles with air suspension program:

When you are towing a trailer, the vehicle level always remains in the highway setting. The following applies additionally when towing a trailer: RThe vehicle is lowered to the highway

level when it reaches a speed of 5 mph (8 km/h) if not set to highway level. RThe highspeed level is not available. The restrictions that apply to towing also apply when using accessories that are connected to the trailer power socket, such as a bicycle rack.

Towing a trailer There are many different laws, including speed limit restrictions, having to do with trailer towing. Make sure your rig will be legal, not only for where you reside, but also for where you will be driving. A good source for this information can be the police or local authorities. Note the following, when driving with a trailer: RIn order to gain skill and an understanding

of the vehicle’s behavior, you should

practice turning, stopping and backing up in an area which is free from traffic.

RBefore you start driving check the

trailer hitch

- break-away switch - safety chains - electrical connections

lighting tires

RAdjust the mirrors (Y page 106) to permit unobstructed view beyond rear of trailer. RIf the trailer has electric brakes, start your vehicle and trailer moving slowly, and then apply only the trailer brake controller by hand to make sure the brakes are working properly.

RAlways secure items in the trailer to

prevent load shifts while driving.

RWhen towing a trailer, check occasionally to make sure the load is secure, and that lighting and trailer brakes (if so equipped) are functioning properly.

RTake into consideration that when towing a

trailer, the handling characteristics are

Operation

Driving instructions

1, switch on off-road driving program (Y page 169).

RWhen going down an incline, shift into a lower gear and use the engine’s braking effect. Avoid riding the brakes, thus overheating the vehicle and trailer brakes (if so equipped).

RIf the engine coolant rises to an extremely high temperature when the air conditioning is on, turn off the air conditioning system. Engine coolant heat can be additionally vented by opening the windows, switching the climate control fan speed to high and setting the temperature control to the maximum.

RExtreme care must be exercised since your vehicle with a trailer will require additional passing distance ahead than when driving without a trailer. Because your vehicle and trailer is longer than your vehicle alone, you will also need to go much farther ahead of the passed vehicle before you can return to your lane.

different and less stable from those when operating the vehicle without a trailer. It is important to avoid sudden maneuvers.

RThe vehicle and trailer combination is

heavier, and therefore is limited in acceleration and climbing ability, and requires longer stopping distances. It is more prone to reacting to cross wind gusts, and requires more sensitive steering input.

RIf possible, do not brake abruptly, but

rather engage the brake slightly at first to permit the trailer to activate its brake. Then increase the braking force.

! If the trailer should begin to sway, reduce

the vehicle’s speed immediately. Do not attempt to straighten out the tow vehicle and trailer by increasing the speed. RIf the transmission shifts between gears on

inclines repeatedly, shift to a lower gear range manually (Y page 133). Select 4, 3, 2 or 1. A lower gear and reduction of speed reduces the chance of engine overloading and/or overheating.

ROn very steep inclines, not manageable

with automatic transmission in gear range

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Operation

Driving instructions Decoupling the trailer G Warning! Vehicles with air suspension program: While you are coupling or decoupling a trailer, make sure nobody locks or unlocks the vehicle and/or opens or closes doors or the tailgate. The vehicle’s level could change and you could endanger yourself and/or others as a result. Make sure that you do not operate the ADS switch or the vehicle level control system when coupling/decoupling the trailer.

X Make sure the automatic transmission is in

park position P (Y page 130).

X Engage the parking brake for the vehicle

(Y page 127).

X Start the engine (Y page 122). X Close all doors and the tailgate. X Engage the parking brake for the trailer. G Warning! Vehicles with air suspension program: As soon as you disconnect the electrical connection between the trailer and the

18 Observe all legal requirements. 286

vehicle, the vehicle will lower. To help avoid personal injury, make sure no one is near the wheel housing or underneath the vehicle before the electrical connection is disconnected. When you decouple the trailer, the vehicle is temporarily raised because the springs are relieved of load. Be especially careful during this process, as you could otherwise injure yourself and/or others. Make sure that any persons remaining in the vehicle do not press the switches for vehicle level control or the ADS.

X Disconnect all electrical plug connectors. X Decouple the trailer. X Make sure that the trailer coupling is free

of load.

X Turn off the engine (Y page 127).

Driving abroad If you plan to drive the vehicle outside the U.S. or Canada, you should request dealer network information for your destination from any authorized Mercedes-Benz Center.

Control and operation of radio transmitter

Safety notes G Warning! Please do not forget that your primary responsibility is to drive the vehicle safely. Only operate the COMAND (Cockpit Management and Data system), radio or telephone18 if road, weather and traffic conditions permit. Otherwise, you may not be able to observe traffic conditions and could endanger yourself and others. Bear in mind that at a speed of just 30 mph (approximately 50 km/h), your vehicle is covering a distance of 44 feet (approximately 14 m) every second.

Telephones and two-way radios G Warning! Never operate radio transmitters equipped with a built-in or attached antenna, such as a portable telephone or a citizens band unit, from inside the vehicle while the engine is running. Doing so could lead to a malfunction of the vehicle’s electronic system, possibly resulting in an accident and/or serious personal injury. Radio transmitters should only be used inside the vehicle if they are connected to an antenna that is installed on the outside of the vehicle. G Warning! Please do not forget that your primary responsibility is to drive the vehicle. A driver’s attention to the road must always be his/her primary focus when driving. For your safety and the safety of others, we recommend that you pull over to a safe location and stop before placing or taking a telephone call. If you choose to use the telephone19 while driving, please use the hands-free device and only use the telephone when road,

19 Observe all legal requirements

weather and traffic conditions permit. Some jurisdictions prohibit the driver from using a mobile telephone while driving a vehicle. Only operate the COMAND19 (Cockpit Management and Data System) if road, weather and traffic conditions permit. Bear in mind that at a speed of just 30 mph (approximately 50 km/h), your vehicle is covering a distance of 44 feet (approximately 14 m) every second. Refer to the radio transmitter operation instructions regarding use of an external antenna.

Emission control Certain systems of the engine serve to keep the toxic components of the exhaust gases within permissible limits required by law. These systems will function properly only when maintained strictly according to factory specifications. Any adjustments on the engine should, therefore, be carried out only by qualified Mercedes-Benz Center authorized technicians.

Operation

Driving instructions Engine adjustments should not be altered in any way. Moreover, the specified service procedures must be carried out regularly according to Mercedes-Benz servicing requirements. For details refer to the Maintenance Booklet. G Warning! Inhalation of exhaust gas is hazardous to your health. All exhaust gas contains carbon monoxide (CO), and inhaling it can cause unconsciousness and possible death. Do not run the engine in confined areas (such as a garage) which are not properly ventilated. If you think that exhaust gas fumes are entering the vehicle while driving, have the cause determined and corrected immediately. If you must drive under these conditions, drive only with at least one window fully open at all times.

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Operation

Maintenance Maintenance Notes The Maintenance System in your vehicle tracks distance driven and the time elapsed since the last maintenance service, calculates other maintenance service work required, and calls for the next maintenance service accordingly. We strongly recommend that you have your vehicle serviced at an authorized Mercedes- Benz Center, in accordance with the Maintenance Booklet at the times called for by the maintenance service indicator. i Failure to have the vehicle maintained in accordance with the Maintenance Booklet and maintenance service indicator at the designated times/mileage will result in vehicle damage not covered by the Mercedes-Benz Limited Warranty.

Maintenance service indicator message The maintenance service indicator message will notify you when the next maintenance service is due. Starting approximately 1 month before the next maintenance service is due, one of the following messages will appear in the multifunction display while you are driving or when you switch on the ignition (example service A): Service A In XXXX Miles (km) Service A In XXX Days Service A In X Day Service A Due Now

to

(approximately 1 hour) Service H (approximately 8 hours)

Refer to Maintenance Booklet for a listing of maintenance services and intervals they need to be performed at.

Clearing the maintenance service indicator message The maintenance service indicator message is cleared automatically Rafter approximately 10 seconds when you

switch on the ignition

Rafter approximately 10 seconds when

reaching the service threshold while driving Rafter approximately 30 seconds, once the suggested maintenance service term has passed

The maintenance services will be indicated by showing a service type A through type H in the multifunction display. Types A through H are classified based on estimated time needed to perform the maintenance service, ranging: from Service A

288

In addition, a signal sounds when the message appears. Any authorized Mercedes-Benz Center will reset the maintenance service indicator following a completed maintenance service.

Calling up the maintenance service indicator display i The menu overview can be found on

(Y page 143).

You can call up the maintenance service indicator display at any time to check when the next maintenance service is due. X Switch on the ignition. X Press button è or ÿ on the

multifunction steering wheel repeatedly until the standard display (Y page 144) appears in the multifunction display.

X Press button k or j on the

multifunction steering wheel until the maintenance service indicator display with the service symbol 9 and the maintenance service deadline appears in the multifunction display.

i If the battery is disconnected, the days of

disconnection will not be included in the

Operation

Maintenance count shown by the maintenance service indicator. To arrive at the true maintenance service deadline, you will need to subtract these days from the days shown in the maintenance service indicator message or maintenance service indicator display. Do not confuse the maintenance service indicator with the engine oil level indicator N.

Resetting the maintenance service indicator In the event that the maintenance service on your vehicle is not carried out at an authorized Mercedes-Benz Center, you can have the maintenance service indicator reset. The automotive maintenance facility carrying out the maintenance service will find the information for resetting the maintenance service indicator in the maintenance-relevant literature for your vehicle. Such literature is available from any authorized Mercedes-Benz Center or directly from Mercedes-Benz. i If the maintenance service indicator was

inadvertently reset, have an authorized Mercedes-Benz Center correct it.

289

1 Reset button X Clearing the maintenance service

indicator message manually: Press reset button 1 on the instrument cluster. The standard display appears in the multifunction display.

Maintenance service term exceeded If you have exceeded the suggested maintenance service term, you will see the following message in the multifunction display: Service A Exceeded By XXXXX Miles (Km) Service A Exceeded By XXX Days Service A Exceeded By X Day

Operation

Vehicle care

Only reset if the proper maintenance service has been performed. Resetting the system without performing the proper maintenance service as called for by the maintenance service indicator will result in engine damage and/or other vehicle damage not covered by the Mercedes-Benz Limited Warranty.

290

Vehicle care Cleaning and care of the vehicle

Notes Regular and proper care will help to maintain the value of your vehicle. G Warning! Many cleaning products can be hazardous. Some are poisonous, others are flammable. Always follow the instructions on the particular container. Always open your vehicle’s doors or windows when cleaning the inside. Never use fluids or solvents that are not designed for cleaning your vehicle. Always lock away cleaning products and keep them out of reach of children.

! When cleaning the vehicle, do not use

scouring agents. Never apply strong force and only use a soft, wet cloth or sponge. Otherwise you may scratch or damage the surface to be cleaned.

While in operation, even while parked, your vehicle is subjected to varying external influences which, if gone unchecked, can

attack the paintwork as well as the vehicle underbody and cause lasting damage. Such damage is caused not only by extreme and varying climatic conditions, but also by: RAir pollution RRoad salt RTar RGravel and stone chipping To avoid paint damage, you should immediately remove: RGrease and oil RFuel RCoolant RBrake fluid RBird droppings RInsects RTree resins etc. Frequent washing reduces and/or eliminates the aggressiveness and potency of the above adverse influences.

More frequent washings are necessary to deal with unfavorable conditions: Rnear the ocean Rin industrial areas (smoke, exhaust

emissions)

Rduring winter operation You should check your vehicle from time to time for stone chipping or other damage. Any damage should be repaired as soon as possible to prevent corrosion. In doing so, do not neglect the underbody of the vehicle. A prerequisite for a thorough check is a washing of the underbody followed by a thorough inspection. Damaged areas need to be re-undercoated. Your vehicle has been treated at the factory with a wax-base rustproofing in the body cavities which will last for the lifetime of the vehicle. Post-production treatment is neither necessary nor recommended by Mercedes- Benz because of the possibility of incompatibility between materials used in the production process and others applied later. We have selected vehicle-care products and compiled recommendations which are specially matched to our vehicles and which always reflect the latest technology. You can obtain Mercedes-Benz approved vehicle-care

products at an authorized Mercedes-Benz Center. Scratches, corrosive deposits, corrosion or damage due to negligent or incorrect care cannot always be removed or repaired with the vehicle-care products recommended here. In such cases it is best to seek aid at an authorized Mercedes-Benz Center. The following topics deal with the cleaning and care of your vehicle and give important “how-to” information as well as references to Mercedes-Benz approved vehicle-care products.

Power washer ! Follow the instructions provided by the

power washer manufacturer on maintaining a distance between the vehicle and the nozzle of the power washer. Never use a round nozzle to power-wash tires. The intense jet of water can result in damage to the tire. Always replace a damaged tire. Always keep the jet of water moving across the surface. Do not aim directly at electrical parts, electrical connectors, seals, or other rubber parts.

Operation

Vehicle care

i Vehicles with KEYLESS-GO:

If a door handle is hit by a strong jet of water, and a SmartKey is within approximately 3 ft (1 m) of the vehicle, it could be inadvertently locked or unlocked.

Tar stains Quickly remove tar stains before they dry and become more difficult to remove. A tar remover is recommended.

Paintwork, painted body components ! Affixing stickers, magnets, adhesive tape

or similar materials to painted body components may damage the paintwork. Mercedes-Benz approved Paint Care should be applied when water drops on the paint surface do not “bead up”. This should normally be done every 3 to 5 months, depending on the climate and washing detergent used. Mercedes-Benz approved Paint Cleaner should be applied if the paint surface shows signs of embedded dirt (i.e. loss of gloss). Do not apply any of these products or wax if your vehicle is parked in the sun or if the hood is still hot.

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Operation

Vehicle care X Use the appropriate MB-Touch-Up Stick for quick and provisional repairs of minor paint damage (i.e. chips from stones, vehicle doors, etc.).

Engine cleaning Prior to cleaning the engine compartment, make sure to protect electrical components and connectors from contact with water and cleaning agents. Corrosion protection, such as MB Anticorrosion Wax should be applied to the engine compartment after every engine cleaning. Before applying, all control linkage bushings and joints should be lubricated. The poly-V-belt and all pulleys should be protected from any wax.

Vehicle washing In the winter, thoroughly remove all traces of road salt as soon as possible. When washing the vehicle underbody, do not forget to clean the inner sides of the wheels. i Vehicles with KEYLESS-GO:

If a door handle is hit by a strong jet of water, and a SmartKey is within

292

approximately 3 ft (1 m) of the vehicle, it could be inadvertently locked or unlocked.

Hand-wash X Do not use hot water or wash your vehicle

in direct sunlight.

X Only use a soft, wet cloth or sponge to

clean the vehicle.

X Only use a mild vehicle wash detergent,

such as Mercedes-Benz approved Car Shampoo.

X Thoroughly spray the vehicle with a

diffused jet of water.

X Do not spray directly towards the

ventilation intake.

X Use plenty of water and rinse the sponge

and chamois frequently.

X Rinse with clean water and thoroughly dry

with a chamois. Do not allow cleaning agents to dry on the finish.

Automatic car wash You can have your vehicle washed in an automatic car wash from the start. Brushless car washes are preferable.

X To protect the filter system, activate the air recirculation mode using button : on the climate control panel.

! Do not clean your vehicle in an automatic

touchless car wash which uses caustic spray. Caustic spray will damage the paint or ornamental moldings.

If the vehicle is very dirty, prewash it before running it through the automatic car wash. ! Make sure the combination switch is set to wiper setting M. Otherwise, the rain sensor could activate and cause the wipers to move unintentionally. This may lead to vehicle damage. Due to the width of the vehicle, fold in exterior rear view mirrors prior to running the vehicle through an automatic car wash to prevent damage to the mirrors.

X When taking the vehicle through an automatic conveyor-type car wash: Make sure the automatic transmission remains in neutral position N. Observe instructions, see “Remaining in neutral position N” (Y page 130).

When leaving the automatic car wash, make sure the mirrors are folded out.

Headlamps, brake lamps, tail lamps, side markers, turn signal lenses X Use a mild vehicle wash detergent, such as

Mercedes-Benz approved Car Shampoo, with plenty of water.

! Only use window cleaning solutions that

are suitable for plastic lamp lenses. Window cleaning solutions which are not suitable may damage the plastic lamp lenses of the headlamps. Therefore, do not use abrasives, solvents or cleaners that contain solvents.

Cleaning the Parktronic system sensors Parktronic system sensors are located in the front and rear bumper.

After running the vehicle through an automatic car wash, wipe any wax off of the windshield and the wiper blade inserts. This will prevent smears and reduce wiping noise which can be caused by residual wax on the windshield.

Ornamental moldings X For regular cleaning and care of ornamental

moldings, use a damp cloth.

! Do not use chrome cleaner on ornamental moldings. Although ornamental moldings may have chrome appearance, they could be made of anodized aluminum that will be damaged when cleaned with chrome cleaner. Instead, use a damp cloth to clean those ornamental moldings. For very dirty ornamental moldings of which you are sure are chrome-plated, use a chrome cleaner. If in doubt whether an ornamental molding is chrome-plated, contact an authorized Mercedes-Benz Center.

Operation

Vehicle care

1 Parktronic system sensors in front

bumper

X Only clean sensors 1 by hand. X Use a mild vehicle wash detergent, such as

Mercedes-Benz approved Car Shampoo, with plenty of water and a soft, non- scratching cloth to clean sensors 1 on the bumpers.

! Applying strong pressure may damage

the sensor covers.

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Operation

Vehicle care Cleaning the rear view camera lens

1 Camera lens X Only use clean water and a soft, non-

scratching cloth to clean camera lens 1. Be careful not to apply wax to camera lens 1 when waxing the vehicle. If necessary, remove the wax using the Mercedes-Benz approved Car Shampoo with plenty of water. ! Do not clean the camera and the area

around the camera Rwith a high-pressure cleaner Rwith a dry cloth and strong pressure Rwith aggressive cleaning agents You could otherwise damage the camera.

294

Cleaning the windows and the wiper blades ! Never open the hood when the wiper arms

are folded forward. G Warning! For safety reasons, switch off wipers and remove SmartKey from starter switch (vehicles with KEYLESS-GO: Make sure the vehicle’s on-board electronics have status 0) before cleaning the windshield and/or the wiper blades. Otherwise, the wiper motor could suddenly turn on and cause injury.

! Do not pull on the wiper blade inserts.

They could tear.

X Fold the wiper arms forward until they snap

into place.

X Clean the windshield and the wiper blade

inserts with a clean cloth and mild detergent solution.

X Use a soft, clean cloth and a mild window cleaning solution on all outside and inside glass surfaces. An automotive glass cleaner is recommended.

! Fold the windshield wiper arms back onto the windshield before turning the SmartKey in the starter switch or pressing the KEYLESS-GO start/stop button (vehicles with KEYLESS-GO). Hold on to the wiper when folding the wiper arm back. If released, the force of the impact from the tensioning spring could crack the windshield.

! To clean the window interior, do not use a dry cloth, abrasives, solvents or cleaners containing solvents. Do not touch the inside of the front, rear or side windows and the power tilt/sliding sunroof with hard objects such as an ice scraper or ring. Doing so may damage the windows or the power tilt/sliding sunroof.

Light alloy wheels If possible, clean wheels once a week. X Use Mercedes-Benz approved Wheel Care,

a soft bristle brush and a strong spray of water for cleaning the light alloy wheels.

! Only use acid-free cleaning materials.

Acid may cause corrosion or damage the clear coat.

! The vehicle should not be parked for an extended period of time immediately after it has been cleaned, especially not after the wheel rims have been cleaned with wheel rim cleaner. Wheel rim cleaners can lead to increased corrosion of the brake disks and brake pads. Non-approved wheel cleaners may also damage the wheel paint if the vehicle is not driven after cleaning. Therefore, the vehicle’s brake system should always be warmed-up before it is parked after cleaning. Drive your vehicle for several minutes to allow the brakes to dry. When applying Mercedes-Benz approved Tire Care and Mercedes-Benz approved Wheel Care products, take care not to spray them on the brake disks.

Plastic and rubber parts X Use a gentle dishwashing detergent or mild detergent for delicate fabrics as a washing solution.

X Wipe with a cloth moistened in a lukewarm

solution. The surface may temporarily change color. If this is the case, wait for it to dry.

G Warning! Do not use cleaners or cockpit care sprays containing solvents to clean the cockpit or the steering wheel. Cleaners containing solvents will make the surface porous and vehicle occupants could suffer serious injuries from plastic parts coming loose in the event of air bag deployment.

! Do not use oil, wax or scouring agents.

Otherwise you may scratch or damage the surface.

Hard plastic trim items X Use Mercedes-Benz approved Interior Care on a soft, lint-free cloth and apply with light pressure.

COMAND display ! You must switch off the COMAND display

and allow it to cool prior to cleaning.

! Do not use any liquids or cleaning agents.

These can damage or even destroy the audio display screen.

X Use a standard microfiber cloth and apply

with light pressure.

Operation

Vehicle care

Steering wheel X Wipe with a damp cloth and dry thoroughly

or clean with Mercedes-Benz approved Leather Care.

Carpets X Use Mercedes-Benz approved Carpet and

Fabric Care for cleaning the carpets.

Headliner X Use a soft bristle brush or a dry-shampoo

cleaner in case of excessive dirt.

Seat belts X Only use clear, lukewarm water and soap.

! The seat belts must not be treated with chemical cleaning agents. Do not dry the seat belts at temperatures above 176‡ (80†) or in direct sunlight. G Warning! Do not bleach or dye seat belts as this may severely weaken them. In a crash they may not be able to provide adequate protection.

295

! Do not use solvents like tar remover or wheel cleaner nor polishes or waxes as these may be abrasive.

Chrome-plated exhaust tip Regular cleaning and care of chrome-plated exhaust tips will help to maintain their shine and the classy appearance. X Use Mercedes-Benz approved Chrome

Polishing Paste each time the vehicle has been washed, especially during the winter.

! Do not use alkaline cleaners such as

wheel cleaners as they could cause corrosion.

Operation

Vehicle care Upholstery Using aftermarket seat covers or wearing clothing that have the tendency to give off coloring (e.g. when wet, etc.) may cause the upholstery to become permanently discolored. By lining the seats with a proper intermediate cover, contact-discoloration will be prevented. G Warning! Only use seat or head restraint covers which have been tested and approved by Mercedes-Benz for your vehicle model. Using other seat or head restraint covers may interfere with or prevent Rdeployment of the front side impact air

bags

Rdeployment of the rear side impact air

bags

Ractivation of the active head restraints Contact an authorized Mercedes-Benz Center for availability.

Leather upholstery Please note that leather upholstery is a natural product and is therefore subject to a natural aging process. Leather upholstery may also react to certain ambient influences

296

such as high humidity or high temperature by showing wrinkles for example. X Wipe leather upholstery with a damp cloth and dry thoroughly or clean with Mercedes- Benz approved Leather Care.

! To avoid damage to leather upholstery:

RWipe with light pressure only. RDo not clean with abrasive cleaning

agents such as scouring milk or powder.

RDo not soak the leather upholstery.

As leather is a natural product, it could otherwise harden or become porous. RExercise particular care when cleaning

perforated leather as its underside should not become wet.

MB Tex upholstery X Use Mercedes-Benz approved Interior Care

onto a soft, lint-free cloth and apply with light pressure for cleaning the upholstery.

Wood trims X Only use water and a damp cloth to clean

wood trims in your vehicle.

Practical hints

Vehicle equipment ............................ 298
Where will I find ...? .......................... 298
Vehicle status messages in the multifunction display ....................... 302
What to do if … .................................. 337
Unlocking/locking manually ........... 350
Resetting activated head restraints 352
Replacing SmartKey batteries ......... 353
Replacing bulbs ................................. 354

Replacing wiper blades .................... 363
Flat tire .............................................. 366
Bleeding the fuel system (diesel engine only) ....................................... 380
AdBlue® (diesel engine only) ........... 380
Battery ............................................... 383
Jump starting .................................... 385
Towing the vehicle ............................ 387
Fuses .................................................. 391

297

Practical hints

Where will I find ...? Vehicle equipment

i This Operator’s Manual describes all

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

Where will I find ...? First aid kit i Check expiration dates and contents for

completeness at least once a year and replace missing/expired items.

The first aid kit is located on the driver’s side in the cargo compartment behind the cover.

1 Lock 2 Cover in driver’s side trim panel X Turn lock 1 by 90° in direction of the

arrow.

X Fold down cover 2.

The first aid kit can be removed.

Vehicle tool kit The vehicle tool kit is located in the space underneath the cargo compartment floor. The vehicle tool kit includes: RAlignment bolt RCollapsible wheel chock RElectric air pump20
RFuse chart RJack RReversible ratchet for jack RTIREFIT kit21
RTowing eye bolt RWheel wrench RSpare wheel bolts22
X Removing: Open the tailgate (Y page 90).

20 ML 320 BlueTEC (Canada vehicles) factory equipped with 20" wheels and vehicles with spare wheel with collapsible tire only. 21 ML 320 BlueTEC (Canada vehicles) factory equipped with 20" wheels only. 22 Vehicles with Minispare wheel only. 298

Practical hints

Where will I find ...? X Engage securing hook 3 on upper cargo

compartment lip 5.

! With the cargo compartment cover blind installed behind the rear seats, disengage cargo compartment cover blind and flip it forward. Otherwise the strap of the securing hook could damage the cargo compartment cover blind.

! To prevent damage, always disengage the

securing hook from upper cargo compartment lip and lower the cargo compartment floor before closing the tailgate.

1 Cargo compartment floor, lowered 2 Floor handle X Push in floor handle 2 as indicated by

arrow.

X Lift cargo compartment floor 1 using floor

handle 2.

3 Securing hook X Release securing hook 3 (located below

the floor handle) from holder.

3 Securing hook 4 Cargo compartment floor, raised 5 Upper cargo compartment lip

299

Practical hints

Where will I find ...? Vehicles without spare wheel

Vehicles with spare wheel

1 Reversible ratchet for jack 2 Fuse chart 3 Collapsible wheel chock 4 Jack 5 TIREFIT kit23
6 Towing eye bolt 7 Wheel wrench 8 Alignment bolt 9 Electric air pump23

Example illustration 1 Electric air pump24
2 Storage well casing 3 Alignment bolt 4 Towing eye bolt 5 Wheel wrench X To access remaining tools: Remove storage well casing 2 (if so equipped). X Remove the spare wheel (Y page 302).

Example illustration 6 Jack 7 Collapsible wheel chock 8 Fuse chart 9 Spare wheel bolts25
a Reversible ratchet for jack

Collapsible wheel chock The collapsible wheel chock serves to secure the vehicle, e.g. while changing a wheel. X Take the collapsible wheel chock from the

vehicle tool kit (Y page 298).

23 ML 320 BlueTEC (Canada vehicles) factory equipped with 20" wheels only. 24 Vehicles with spare wheel with collapsible tire only. 25 Vehicles with Minispare wheel only. 300

Jack G Warning! Only use the jack supplied with your vehicle to lift the vehicle briefly for wheel changes. If you use the jack for any other purpose, you or others could be injured, as the jack is designed only for the purpose of changing a wheel. When using the jack, observe the safety notes in the “Mounting the spare wheel” section and the notes on the jack.

X Take the jack from the vehicle tool kit

(Y page 298).

Practical hints

Where will I find ...?

Operational position 1 Jack 2 Reversible ratchet X Attach reversible ratchet 2 to jack 1 in such a way that the word UP can be seen. Before placing the jack back into the vehicle tool kit: X Fully collapse the jack (storage position). X Remove the reversible ratchet.

Storage position X Take the reversible ratchet from the vehicle

tool kit.

301

1 Tilt the plates upward 2 Fold the lower plate outward 3 Insert the plate X Setting up: Tilt both plates upward 1. X Fold the lower plate outward 2. X Guide the tabs of the lower plate all the way

into the openings of base plate 3.

For information on where to place wheel chocks when changing a wheel, see “Lifting the vehicle” (Y page 372).

Practical hints

Vehicle status messages in the multifunction display Spare wheel G Observe Safety notes, see

page 366.

i USA only:

The ML 320 BlueTEC does not have a spare wheel.

i Canada only:

The ML 320 BlueTEC does not have a spare wheel. ML 320 BlueTEC vehicles that are factory equipped with 20'' wheels come with TIREFIT.

The spare wheel is located in the space underneath the cargo compartment floor. X Removing: Open the tailgate (Y page 90). X Lift the cargo compartment floor

(Y page 299).

! To prevent damage, always disengage the

securing hook from upper cargo compartment lip and lower the cargo compartment floor before closing the tailgate.

X Remove the storage well casing (if so

equipped) (Y page 300).

302

Example illustration 1 Retaining screw 2 Spare wheel X Remove retaining screw 1 by turning it

counterclockwise.

X Remove spare wheel 2. For information on mounting the spare wheel, see “Flat tire” (Y page 366).

Storing the spare wheel after use X Place the spare wheel into the spare wheel

well (Y page 302).

X Secure the spare wheel by turning the

retaining screw (Y page 302) clockwise.

X Place the storage well casing into the spare

wheel (Y page 300) (if so equipped).

Vehicle status messages in the multifunction display Notes Warning and malfunction messages appear in the multifunction display located in the instrument cluster. Certain warning and malfunction messages are accompanied by an audible signal. Address these messages accordingly and follow the additional instructions given in this Operator’s Manual. Selecting the Vehicle status message memory menu in the control system (Y page 151) displays both cleared and uncleared messages. High-priority messages appear in the multifunction display in red color. Certain messages of high priority cannot be cleared from the multifunction display using the reset button (Y page 138) or button j, k, · or è on the multifunction steering wheel. Other messages of high priority and messages of less immediate priority can be cleared from the multifunction display using the reset button (Y page 138) or button j, k, · or è on the

Vehicle status messages in the multifunction display

Practical hints

multifunction steering wheel. They are then stored in the Vehicle status message memory menu (Y page 151). Remember that clearing a message will only make the message disappear. Clearing a message will not correct the condition that caused the message to appear. G Warning! All categories of messages contain important information which should be taken note of and, where a malfunction is indicated, addressed as soon as possible at an authorized Mercedes-Benz Center.

Failure to repair the condition noted may cause damage not covered by the Mercedes-Benz Limited Warranty, or result in property damage or personal injury. G Warning! No messages will be displayed if either the instrument cluster or the multifunction display is inoperative. As a result, you will not be able to see information about your driving conditions, such as speed or outside temperature,

warning/indicator lamps, malfunction/ warning messages or the failure of any systems. Driving characteristics may be impaired. If you must continue to drive, please do so with added caution. Contact an authorized Mercedes-Benz Center as soon as possible. On the pages that follow, you will find a compilation of the most important warning and malfunction messages that may appear in the multifunction display. For your convenience the messages are divided into text messages (Y page 304) and symbol messages (Y page 316).

303

Practical hints

Vehicle status messages in the multifunction display Text messages

Safety systems

Display messages

Possible cause/consequence

Possible solution

ABS, ESP Inoperative See Operator’s Manual

The brake system is still functioning normally but due to a malfunction, the ABS, the BAS and the ESP® are unavailable.

X Continue driving with added caution. Wheels

may lock during hard braking, reducing steering capability.

X Have the system checked at an authorized Mercedes-Benz Center as soon as possible.

Failure to follow these instructions increases the risk of an accident.

ABS, ESP Unavailable See Operator’s Manual

ABS, ESP Unavailable See Operator’s Manual

The self-diagnosis may not be completed yet.

The display will clear after driving a short distance at a vehicle speed of above 12 mph (20 km/h).

The brake system still functions normally but due to insufficient power supply, the ABS, the BAS and the ESP® are unavailable.

When the voltage is above the required value again, the ABS is operational again and the message should disappear. X If the message does not disappear: Have the system checked at an authorized Mercedes- Benz Center as soon as possible.

ABS

ABS

ABS

304

Display messages

Possible cause/consequence

Possible solution

Vehicle status messages in the multifunction display

Practical hints

ESP

ESP

ESP

Inoperative See Operator’s Manual

Unavailable See Operator’s Manual

In addition, the yellow ESP® warning lamp v comes on. The brake system is still functioning normally but due to a malfunction the ESP® is unavailable. The ABS and the BAS may not be operational.

The brake system still functions normally but due to insufficient power supply the ESP® is unavailable.

X Continue driving with added caution. X Have the system checked at an authorized Mercedes-Benz Center as soon as possible.

Failure to follow these instructions increases the risk of an accident.

X Continue driving with added caution. When the voltage is above the required value again, the ESP® is operational again and the message in the multifunction display should disappear. If the message in the multifunction display does not disappear: X Have the alternator and the battery checked. X Have the system checked at an authorized Mercedes-Benz Center as soon as possible.

Unavailable See Operator’s Manual

If the yellow ESP® warning lamp v flashes while driving and this message appears, the 4-ETS has switched off to prevent overheating of the drive wheel brakes.

As soon as the brakes have cooled off, the 4-ETS switches on again. The message in the multifunction display disappears and the ESP® warning lamp v goes out.

305

Practical hints

Vehicle status messages in the multifunction display Display messages

Possible cause/consequence

Possible solution

ESP

PRE-SAFE

Unavailable See Operator’s Manual

Inoperative See Operator’s Manual

The self-diagnosis might not be completed yet.

The display will clear after driving a short distance at a vehicle speed of above 12 mph (20 km/h).

X Contact an authorized Mercedes-Benz Center

as soon as possible.

X Contact an authorized Mercedes-Benz Center

as soon as possible.

The PRE-SAFE® system itself has failed. All other occupant safety systems, such as the air bags, are still available.

If ESP® and PRE-SAFE® malfunction messages are displayed simultaneously, the PRE-SAFE® system has been deactivated as a result of these malfunctions. All other occupant safety systems, such as the air bags, are still available.

306

Display messages

Front Passenger Airbag Enabled See Operator’s Manual

Vehicle status messages in the multifunction display

Practical hints

Possible cause/consequence

Possible solution

USA only: The front passenger front air bag is activated while driving even though a child, small individual, or object below the system’s weight threshold is on the front passenger seat, or the front passenger seat is empty. Objects on the seat or forces acting on the seat may make the system sense supplemental weight.

X Stop the vehicle in a safe location as soon as

possible.

X Engage the parking brake. X Switch off the ignition. X Open the front passenger door. X Remove child and child restraint from front

passenger seat and properly secure the child in rear seat employing the child restraint if necessary.

X Remove any other items from on and around the front passenger seat and make sure the parcel net on the back of the front passenger seat is empty.

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 and sense that an occupant on the front passenger seat is of a greater weight than actually present.

X Keep the seat unoccupied, close the front passenger door and switch on the ignition.

307

Practical hints

Vehicle status messages in the multifunction display Display messages

Possible cause/consequence

308

Possible solution Monitor the 59 indicator lamp in the center console (Y page 56) and the multifunction display in the instrument cluster (Y page 32) for the following: With the seat unoccupied and the ignition switched on, Rthe 59 indicator lamp in the

center console should illuminate and remain illuminated, indicating that the OCS (Y page 53) has deactivated the front passenger front air bag.

Rthe message Front Passenger Airbag

Enabled See Operator’s Manual or the message Front Passenger Airbag Disabled See Operator’s Manual should not appear in the multifunction display at any time the seat is unoccupied. Wait at least 60 seconds for the system to complete the necessary check cycles and to make sure neither message appears in the multifunction display.

If above conditions are met, you can occupy the front passenger seat again. Depending on the front passenger classification sensed by the

Vehicle status messages in the multifunction display

Practical hints

Display messages

Possible cause/consequence

Possible solution OCS, the 59 indicator lamp will remain illuminated or go out. If above conditions are not met, the system is not working properly. Have the system checked as soon as possible at an authorized Mercedes-Benz Center.

G Warning! If the 59 indicator lamp remains out even after performing the above corrective steps, do not have any children 12 years old and under and other small individuals use the front passenger seat until the system has been repaired.

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Practical hints

Vehicle status messages in the multifunction display Display messages

Possible cause/consequence