2005 Mercedes-benz C Class Owners Manual

In the “Operation” section you will find detailed information on operating, main- taining and caring for your vehicle.

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After 1000 miles (1500 km) you may gradually increase vehicle and engine speeds to the permissible maximum. All of the above instructions, as may apply to your vehicle type, also apply when driving the first 1000 miles (1500 km) after the engine or the rear differential has been replaced.

Always obey applicable speed limits.

The more cautiously you treat your vehicle during the break-in period, the more satis- fied you will be with its performance later on. 앫 Drive your vehicle during the first

1000 miles (1500 km) at varying but moderate vehicle and engine speeds. 앫 During this period, avoid heavy loads

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

앫 Shift gears in a timely manner. 앫 Avoid accelerating by kick-down. 앫 Do not attempt to slow the vehicle

down by shifting to a lower gear using the gear selector lever.

앫 Select positions 3, 2 or 1 only when driving at moderate speeds (for hill driving).

앫 Select C as the preferred shift program (컄 page 169) for the first 1000 miles (1500 km).

왔 Driving instructions Drive sensibly – save fuel

Fuel consumption, to a great extent, depends on driving habits and operating conditions. To save fuel you should: 앫 Keep tires at the recommended tire

inflation pressures.

앫 Remove unnecessary loads. 앫 Remove roof rack when not in use. 앫 Allow engine to warm up under low

load use.

앫 Avoid frequent acceleration and decel-

eration.

앫 Have all maintenance work performed

at the intervals specified in the Maintenance Booklet and as required by the maintenance service display. Contact an authorized Mercedes-Benz Center.

Fuel consumption is also increased by driving in cold weather, in stop-and-go traffic, on short trips and in hilly area.

Operation Driving instructions

Drinking and driving

Pedals

Warning!

Warning!

Drinking and driving and/or taking drugs and driving are very dangerous combina- tions. Even a small amount of alcohol or drugs can affect your reflexes, perceptions and judgement.

The possibility of a serious or even fatal accident are greatly increased when you drink or take drugs and drive.

Do not drink or take drugs and drive or allow anyone to drive who has been drinking or taking drugs.

Keep driver’s foot area clear at all times. Objects stored in this area may impair pedal movement.

Power assistance

Warning!

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

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Operation Driving instructions

Brakes

Warning!

After driving in heavy rain for some time without applying the brakes or through wa- ter deep enough to wet brake components, the first braking action may be somewhat reduced and increased pedal pressure may be necessary to obtain expected braking ef- fect. Maintain a safe distance from vehicles in front.

Resting your foot on the brake pedal will cause excessive and premature wear of the brake pads.

It can also result in the brakes overheating, thereby significantly reducing their effec- tiveness. It may not be possible to stop the vehicle in sufficient time to avoid an acci- dent.

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To help prevent brake disk corrosion after driving on wet road surfaces (particularly salted roads), it is advisable to brake the vehicle with considerable force prior to parking. The heat generated serves to dry the brakes. If your brake system is normally only subject to moderate loads, you should occasionally test the effectiveness of the brakes by applying above-normal braking pressure at higher speeds. This will also enhance the grip of the brake pads.

Be very careful not to endanger other road users when you apply the brakes. Refer to the description of the Brake Assist System (BAS) (컄 page 84).

If the parking brake is released and the brake warning lamp in the instrument cluster stays on, the brake fluid level in the reservoir is too low.

Brake pad wear or a leak in the system may be the reason for low brake fluid in the reservoir. Have the brake system inspected immediately. Contact an authorized Mercedes-Benz Center. All checks and service work on the brake system should be carried out by qualified technicians only. Contact an authorized Mercedes-Benz Center. Only install brake pads and brake fluid recommended by Mercedes-Benz.

Warning!

If other than recommended brake pads are installed, or other than recommended brake fluid is used, the braking properties of the vehicle can be degraded to an extent that safe braking is substantially impaired. This could result in an accident.

! When driving down long and steep grades, relieve the load on the brakes by shifting into a lower gear to use the engine’s braking power. This helps prevent overheating of the brakes and reduces brake pad wear.

After hard braking, it is advisable to drive on for some time, rather than immediately parking, so that the air stream will cool down the brakes faster.

When starting off on a slippery surface, do not allow a drive wheel to spin for an extended period with the ESP switched off. Doing so may cause serious damage to the drivetrain which is not covered by the Mercedes-Benz Limited Warranty.

Simultaneously depressing the accelerator pedal and applying the brake reduces engine performance and causes premature brake and drivetrain wear.

Driving off

Parking

Apply the brakes to test them briefly after driving off. Perform this procedure only when the road is clear of other traffic. Warm up the engine smoothly. Do not place full load on the engine until the operating temperature has been reached.

Set the parking brake whenever park- ing or leaving the vehicle. In addition, move gear selector lever to position P (manual transmission: first or reverse gear). When parking on hills, always turn front wheels towards the road curb.

Operation Driving instructions

Warning!

Do not park this vehicle in areas where combustible materials such as grass, hay or leaves can come into contact with the hot exhaust system, as these materials could be ignited and cause a vehicle fire.

To reduce the risk of personal injury as a re- sult of vehicle movement, before turning off the engine and leaving the vehicle always: 앫 Keep right foot on brake pedal. 앫 Firmly depress parking brake pedal. 앫 Move the gear selector lever to

position P (manual transmission: first or reverse gear).

앫 Slowly release brake pedal. 앫 When parked on an incline, turn front

wheels towards the road curb.

앫 Turn the SmartKey in the starter switch to position 0 and remove the SmartKey from the starter switch.

앫 Take the SmartKey with you and lock

the vehicle when leaving.

285

The treadwear indicator appears as a solid band across the tread.

Warning!

Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may lose control of the vehicle. Continued driving with a flat tire or driving at high speed with a flat tire will cause excessive heat build-up and possibly a fire.

Hydroplaning

Depending on the depth of the water layer on the road, hydroplaning may occur, even at low speeds and with new tires. Reduce vehicle speed, avoid track grooves in the road and apply brakes cautiously in the rain.

Operation Driving instructions

Tires

Warning!

Warning!

If you feel a sudden significant vibration or ride disturbance, or you suspect that possi- ble damage to your vehicle has occurred, you should turn on the hazard warning flash- ers, carefully slow down, and drive with cau- tion to an area which is a safe distance from the road.

Inspect the tires and the vehicle underbody for possible damage. If the vehicle or tires appear unsafe, have it towed to the nearest Mercedes-Benz Center or tire dealer for repairs.

Treadwear indicators (TWI) are required by law. These indicators are located in six places on the tread circumference and become visible at a tread depth of approximately 1/16 in (1.6 mm), at which point the tire is considered worn and should be replaced.

286

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

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

Specified tire inflation pressures must be maintained. This applies particularly if the tires are subjected to high loads (e.g. high speeds, heavy loads, high ambient temper- atures).

Tire traction

The safe speed on a wet, snow covered or icy road is always lower than on a dry road. You should pay particular attention to the condition of the road whenever the outside temperatures are close to the freezing point.

Warning!

If ice has formed on the road, tire traction will be substantially reduced. Under such weather conditions, drive, steer and brake with extreme caution.

Mercedes-Benz recommends M+S rated radial-ply tires with a minimum tread depth of approximately 1/6 in (4 mm) on all four wheels for the winter season to ensure normal balanced handling characteristics. On packed snow, they can reduce your stopping distance compared to summer tires. Stopping distance, however, is still considerably greater than when the road is not covered with snow or ice. Exercise ap- propriate caution.

Avoid spinning of a drive wheel. This may cause serious damage to the drivetrain which is not covered by the Mercedes-Benz Limited Warranty.

Operation Driving instructions

Tire speed rating

Regardless of the tire speed rating, local speed limits should be obeyed. Use prudent driving speeds appropriate to prevailing conditions.

Warning!

Even when permitted by law, never operate a vehicle at speeds greater than the maxi- mum speed rating of the tires.

Exceeding the maximum speed for which tires are rated can lead to sudden tire failure, causing loss of vehicle control and possibly resulting in an accident and/or personal injury and possible death, for you and for others.

287

Operation Driving instructions

C 230 Kompressor (Canada only), C 240, C 240 4MATIC, C 320 (USA only), C 320 4MATIC Your vehicle is factory equipped with “H”-rated tires, which have a speed rating of 130 mph (210 km/h). An electronic speed limiter prevents your vehicle from exceeding a speed of 130 mph (210 km/h).

C 230 Kompressor Sport, C 320 Sport Your vehicle is factory equipped with “W”-rated tires, which have a speed rating of 168 mph (270 km/h). An electronic speed limiter prevents your vehicle from exceeding a speed of 130 mph (210 km/h).

288

For information on speed rating for winter tires, see “Winter tires” (컄 page 332). For additional general information on tire speed markings on tire sidewall, see “Tire speed rating” (컄 page 320).

Winter driving instructions

The most important rule for slippery or icy roads is to drive sensibly and to avoid abrupt acceleration, braking and steering maneuvers. Do not use the cruise control system under such conditions. When the vehicle is in danger of skidding, move gear selector lever to position N or in case of manual transmission declutch. Try to keep the vehicle under control by corrective steering action.

For information on driving with snow chains, see “Snow chains” (컄 page 333).

Warning!

On slippery road surfaces, never downshift in order to obtain braking action. This could result in drive wheel slip and reduced vehicle control. Your vehicle’s ABS will not prevent this type of control loss.

Operation Driving instructions

Warning!

Standing water

Road salts and chemicals can adversely affect braking efficiency. Increased pedal force may become necessary to produce the normal braking effect. Depressing the brake pedal periodically when traveling at length on salt-strewn roads can bring road-salt-impaired braking efficiency back to normal. If the vehicle is parked after being driven on salt-treated roads, the braking efficiency should be tested as soon as possible after driving is resumed.

If the vehicle becomes stuck in snow, make sure snow is kept clear of the exhaust pipe and from around the vehicle with the engine running. Otherwise, deadly carbon monox- ide (CO) gases may enter vehicle interior re- sulting in unconsciousness and death.

To assure sufficient fresh air ventilation, open a window slightly on the side of the vehicle not facing the wind.

Warning!

Warning!

Make sure not to endanger any other road users when carrying out these braking maneuvers.

The outside temperature indicator is not designed to serve as an ice-warning device and is therefore unsuitable for that purpose. Indicated temperatures just above the freezing point do not guarantee that the road surface is free of ice.

For more information, see “Winter driving” (컄 page 332).

Do not drive through flooded areas or water of unknown depth. Before driving through water, determine its depth. Never accelerate before driving into water. The bow wave could force water into the engine and auxiliary equip- ment, thus damaging them. If you must drive through standing wa- ter, drive slowly to prevent water from entering the passenger compartment or the engine compartment. Water in these areas could cause damage to electrical components or wiring of the engine or transmission, or could result in water being ingested by the engine through the air intake causing severe internal engine damage. Any such damage is not covered by the Mercedes-Benz Limited Warranty.

289

Operation Driving instructions

Passenger compartment

Warning!

Always fasten items being carried as securely as possible.

In an accident, during hard braking or sud- den maneuvers, loose items will be thrown around inside the vehicle, and cause injury to vehicle occupants unless the items are securely fastened in the vehicle.

The trunk is the preferred place to carry objects.

Driving abroad

Abroad, there is an extensive Mercedes-Benz service network at your disposal. If you plan to drive into areas which are not listed in the index of your Mercedes-Benz Center directory, you should request pertinent information from an authorized Mercedes-Benz Center.

290

Control and operation of radio transmitters

Telephones* and two-way radios

COMAND*, radio and telephone*

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 telephone1 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.

1 Observe all legal requirements

Warning!

Never operate radio transmitters equipped with a built-in or attached antenna (i.e. with- out being connected to an external antenna) from inside the vehicle while the engine is running. Doing so could lead to a malfunc- tion of the vehicle’s electronic system, possibly resulting in an accident and personal injury.

Radio transmitters, such as a portable telephone or a citizens band unit should only be used inside the vehicle if they are connected to an antenna that is installed on the outside of the vehicle. Refer to the radio transmitter operation instructions regarding use of an external antenna.

Catalytic converter

Your Mercedes-Benz is equipped with monolithic-type catalytic converters, an important element in conjunction with the oxygen sensors to achieve substantial control of the pollutants in the exhaust emissions. Keep your vehicle in proper operating condition by following our recommended maintenance instructions as outlined in your Maintenance Booklet.

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

Operation Driving instructions

Warning!

Emission control

As with any vehicle, do not idle, park or operate this vehicle in areas where combus- tible materials such as grass, hay or leaves can come into contact with the hot exhaust system, as these materials could be ignited and cause a vehicle fire.

Certain systems of the engine serve to keep the toxic components of the exhaust gases within permissible limits required by law. These systems, of course, 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 techni- cians. Engine adjustments should not be altered in any way. Moreover, the specified service jobs must be carried out regularly according to Mercedes-Benz servicing requirements. For details refer to the Maintenance Booklet.

291

Operation Driving instructions

Warning!

Coolant temperature

Inhalation of exhaust gas is hazardous to your health. All exhaust gas contains carbon monoxide, and inhaling it can cause unconsciousness and lead to 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.

During severe operating conditions and stop-and-go city traffic, the coolant temperature may rise close to approximately 248°F (120°C). The engine should not be operated with the coolant temperature over 248°F (120°C). Doing so may cause serious engine damage which is not covered by the Mercedes-Benz Limited Warranty.

Warning!

앫 Driving when your engine is badly overheated can cause some fluids, which may have leaked into the engine compartment, to catch fire. You could be seriously burned.

앫 Steam from an overheated engine can cause serious burns and can occur just by opening the hood. Stay away from the engine if you see or hear steam com- ing from it.

Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down.

292

왔 At the gas station Refueling

Warning!

Gasoline is highly flammable and poisonous. It burns violently and can cause serious injury. Whenever you are around gasoline, avoid inhaling fumes and skin contact, extinguish all smoking materials. Never allow sparks, flame or smoking materials near gasoline!

Warning!

Flexible Fuel Vehicles only (identified by a label reading Premium gasoline or E85 only! on fuel filler flap): Ethanol fuel (E85) and its vapors are highly flammable, poisonous and burn easily. Etha- nol fuel can cause serious injuries if ignited or if you come into contact with it or inhale fumes of it. Avoid inhalation of ethanol fumes and skin contact with ethanol. Extin- guish all open flames before fueling. Never smoke or create sparks close to ethanol.

Operation At the gas station

The fuel filler flap is located on the right-hand side of the vehicle towards the rear. Locking/unlocking the vehicle with the SmartKey automatically locks/unlocks the fuel filler flap.

1 To open the fuel filler flap 2 To insert the fuel filler cap 3 Tire inflation pressure table 왘 Turn the engine off by turning the

SmartKey to position 0.

왘 Remove the SmartKey from the starter

컄컄

switch.

293

Operation At the gas station

컄컄

왘 Open the fuel filler flap by pushing at

the point indicated by arrow 1. The fuel filler flap springs open.

왘 Turn fuel cap counterclockwise and

hold on to it until possible pressure is released.

왘 Take off cap and set it in direction of arrow 2 in the recess on the fuel filler flap. To prevent fuel vapors from escaping into open air, fully insert filler nozzle unit.

왘 Only fill your tank until the filler nozzle

unit cuts out – do not top up or overfill.

Warning!

Overfilling of the fuel tank may create pressure in the system which could cause a gas discharge. This could cause the gas to spray back out when removing the fuel pump nozzle, which could cause personal injury.

왘 Replace fuel cap by turning it

clockwise. You will hear when fuel cap is tightened.

왘 Close fuel filler flap.

294

Only use premium unleaded gasoline with a minimum Posted Octane Rating of 91 (average of 96 RON/86 MON). Information on gasoline quality can normally be found on the fuel pump. More information on gasoline can be found in the Factory Approved Service Products pamphlet. Flexible Fuel Vehicles are identified by a label reading Premium gasoline or E85 only! on fuel filler flap. For more information, see “Flexible Fuel Vehicles” (컄 page 435).

Leaving the engine running and the fuel cap open can cause the ú malfunc- tion indicator lamp (USA only) or the ± malfunction indicator lamp (Canada only) to illuminate. For more information, see “Practical hints” (컄 page 346) and (컄 page 347).

Check regularly and before a long trip

1 Coolant 2 Brake fluid (fuse box cover removed) 3 Windshield washer and headlamp

cleaning system*

Opening the hood, see (컄 page 296).

Operation At the gas station

Coolant For normal replenishing, use water (pota- ble water quality). For more information, see “Coolant level” (컄 page 301) and see “Fuels, coolants, lubricants, etc.” (컄 page 431).

Windshield washer and headlamp cleaning system* For more information on filling up the washer reservoir, see “Windshield washer system and headlamp cleaning system*” (컄 page 303).

Brake fluid

If you find that the brake fluid in the brake fluid reservoir has fallen to the minimum mark or below, have the brake system checked for brake pad thickness and leaks immediately. Notify an authorized Mercedes-Benz Center immediately. Do not add brake fluid as this will not solve the problem. For more information, see “Practical hints” (컄 page 345).

Removing fuse box cover (컄 page 414).

Engine oil level For more information on engine oil level, see “Engine oil” (컄 page 297).

Vehicle lighting Check function and cleanliness. For more information on replacing light bulbs, see “Replacing bulbs” (컄 page 390). Exterior lamp switch (컄 page 117).

Tire inflation pressure More information on tire inflation pressure (컄 page 315).

295

Operation Engine compartment

Hood

Warning!

왘 Pull lever 1 downwards.

The hood is unlocked and handle 2 will extend out of the radiator grille.

Do not pull the release lever while the vehicle is in motion. Otherwise the hood could be forced open by passing air flow.

Opening The hood lock release lever is located to the left of the steering wheel under the dashboard.

To avoid damage to the windshield wipers or hood, never open the hood if the wiper arms are folded forward away from the windshield.

2 Handle for opening the hood

1 Hood lock release lever

296

왘 Pull handle 2 to its stop out of

radiator grille.

왘 Pull up on the hood (do not pull up on

the handle) and then release it. The hood will be automatically held open at shoulder height by gas-filled struts.

Warning!

To help prevent personal injury, stay clear of moving parts when the hood is open and the engine is running. Make sure the hood is properly closed before driving. When closing the hood, use extreme caution not to catch hands or fingers.

The radiator fan may continue to run for approximately 30 seconds or even restart after the engine has been turned off. Stay clear of fan blades.

Warning!

Closing

Warning!

Be careful that you do not close the hood on anyone.

왘 Let the hood drop from a height of

approximately 1 ft (30 cm). The hood will lock audibly.

왘 Check to make sure the hood is fully

closed. If you can raise the hood at a point above the headlamps, then it is not properly closed. Open it again and let it drop with somewhat greater force.

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

Warning!

The engine is equipped with a transistorized ignition system. Because of the high voltage it is dangerous to touch any components (ignition coils, spark plug sockets, diagnos- tic socket) of the ignition system 앫 with the engine running 앫 while starting the engine 앫 if ignition is “on” and the engine is

turned manually

Operation Engine compartment

Engine oil

The amount of oil your engine needs will depend on a number of factors, including driving style. Higher oil consumption can occur when 앫 the vehicle is new 앫 the vehicle is driven frequently at

higher engine speeds

Engine oil consumption checks should only be made after the vehicle break-in period.

Do not use any special lubricant addi- tives, as these may damage the drive assemblies. Using special additives not approved by Mercedes-Benz may cause damage not covered by the Mercedes-Benz Limited Warranty. More information on this subject is available at any Mercedes-Benz Center.

297

Operation Engine compartment

Checking engine oil level with the control system When checking the oil level 앫 the vehicle must be parked on level

ground

앫 with the engine at operating tempera-

ture, the vehicle must have been stationary for at least five minutes with the engine turned off

앫 with the engine not at operating tem- perature yet, the vehicle must have been stationary for at least 30 minutes with the engine turned off

To check the engine oil level via the multifunction display, do the following: 왘 Switch on ignition (컄 page 33). The standard display (컄 page 129) should appear in the multifunction display. 왘 Press button k or j on the steering wheel until the following message is seen in the multifunction display:

298

If you want to interrupt the checking procedure, press the k or j button on the multifunction steering wheel.

왘 If necessary, add engine oil. For adding engine oil see (컄 page 299). More information on engine oil can be found in the “Technical data” section (컄 page 431) and (컄 page 433).

Other display messages If the SmartKey is not turned to position 2 in the starter switch, the following message will appear:

Switch ignition on to check engine oil level 왘 Switch on ignition (컄 page 33).

One of the following messages will subsequently appear in the indicator: 앫 Engine oil level

OK

앫 Add 1.0 qt engine oil

for max. oil level

(Canada: 1.0 l)

앫 Add 1.5 qts engine oil

for max. oil level

(Canada: 1.5 l)

앫 Add 2.0 qts engine oil

for max. oil level

(Canada: 2.0 l)

If you see the message:

Observe waiting time 왘 If engine is at operating temperature,

wait five minutes before repeating check procedure.

왘 If engine is not at operating tempera-

ture yet, wait 30 minutes before repeating check procedure.

If you see the message:

Engine oil level Not when engine on 왘 Turn off the engine. 왘 If the engine is at operating tempera-

ture, wait five minutes before checking oil.

왘 If the engine is not at operating temper-

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

If there is excess engine oil with the engine at operating temperature, the following message will appear:

Engine oil level Reduce oil level 왘 Have excess oil siphoned or drained

off. Contact an authorized Mercedes-Benz Center.

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

More information on messages in the display concerning engine oil can be found in the “Practical hints” section (컄 page 368) and (컄 page 369).

Operation Engine compartment

Adding engine oil

Only use approved engine oils and oil filters required for vehicles with Maintenance System (U.S. vehicles) or FSS (Canada vehicles). For a listing of approved engine oils and oil filters, refer to the Factory Approved Service Products pamphlet in your vehicle literature portfolio, or contact an authorized Mercedes-Benz Center. Using engine oils and oil filters of specification other than those expressly required for the Maintenance System (U.S. vehicles) or FSS (Canada vehicles), or changing of oil and oil filter at change intervals longer than those called for by the Maintenance System (U.S. vehicles) or FSS (Canada Vehicles) will result in engine damage not covered by the Mercedes-Benz Limited Warranty.

299

Operation Engine compartment

C 230 Kompressor (all models) 1 Filler cap 왘 Unscrew filler cap 1 from filler neck. 왘 Add engine oil as required. Be careful

not to overfill with oil.

Be careful not to spill any oil when adding. Avoid environmental damage caused by oil entering the ground or water.

300

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

왘 Screw filler cap 1 back on filler neck.

C 240 (all models) and C 320 (all models) 1 Filler cap 왘 Unscrew filler cap 1 from filler neck. 왘 Add engine oil as required. Be careful

not to overfill with oil.

Be careful not to spill any oil when adding. Avoid environmental damage caused by oil entering the ground or water.

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

왘 Screw filler cap 1 back on filler neck. More information on engine oil can be found in the “Technical data” section (컄 page 431) and (컄 page 433).

Transmission fluid level

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

Coolant level

The engine coolant is a mixture of water and anticorrosion/antifreeze. To check the coolant level, the vehicle must be parked on level ground and the engine must be cool. The coolant expansion tank is located on the passenger side of the engine compart- ment.

Warning!

In order to avoid any possibly serious burns: 앫 Use extreme caution when opening the hood if there are any signs of steam or coolant leaking from the cooling system, or if the coolant temperature gauge indi- cates that the coolant is overheated.

앫 Do not remove pressure cap on coolant

reservoir if coolant temperature is above 158°F (70°C). Allow engine to cool down before removing cap. The coolant reservoir contains hot fluid and is under pressure.

앫 Using a rag, slowly open the cap

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

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

1 Coolant expansion tank 2 Cap

Operation Engine compartment

왘 Using a rag, turn cap 2 slowly approx-

imately one half turn to the left to release any excess pressure.

왘 Continue turning the cap to the left and

remove it. The coolant level is correct if the level 앫 for cold coolant: reaches the black

top part of the reservoir

앫 for warm coolant: is approx. 0.6 in

(1.5 cm) higher

왘 Add coolant as required. 왘 Replace and tighten cap. For more information on coolant, see “Coolants” (컄 page 437).

301

G Observe all safety instructions

and precautions when handling automotive batteries.

A Risk of explosion D Keep flames or sparks away B Battery acid is caustic. Do not

from battery. Do not smoke.

allow it to come into contact with skin, eyes or clothing. In case it does, immediately flush affected area with clear water and seek medical help if necessary.

E Wear eye protection. C Keep children away. F Follow the instructions in this

Operator’s Manual.

Batteries contain materials that can harm the environment if disposed of improperly. Recycling of batteries is the preferred method of disposal. Many states require sellers of batteries to accept old batteries for recycling.

Operation Engine compartment

Battery

Your vehicle’s battery is located in the engine compartment on the right hand side (컄 page 404). The 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 the battery, always use batteries approved by Mercedes-Benz. If you do not intend to operate your vehicle for an extended period of time, consult an authorized Mercedes-Benz Center about steps you need to observe.

302

Windshield washer system and headlamp cleaning system*

The windshield washer reservoir is located in the engine compartment.

1 Washer fluid reservoir cap Fluid for the windshield washer system and the headlamp cleaning system* is supplied from the windshield washer reservoir. It has a capacity of: 앫 3.2 US qt (3.0 l) in vehicles without

headlamp cleaning system*

앫 6.4 US qt (6.0 l) in vehicles with

headlamp cleaning system*

During all seasons, add MB Windshield Washer Concentrate “S” to water. Premix the windshield washer fluid in a suitable container. 왘 Refill the reservoir with MB Windshield

Washer Concentrate and water (or commercially available premixed windshield washer solvent/antifreeze, depending on ambient temperatures). Always use washer solvent/antifreeze where temperatures may fall below the freezing point. Failure to do so could result in damage to the washer system/reservoir.

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

Operation Engine compartment

Warning!

Washer solvent/antifreeze is highly flamma- ble. Do not spill washer solvent/antifreeze on hot engine parts, because it may ignite and burn. You could be seriously burned.

For more information, see “Windshield washer and headlamp cleaning system*” (컄 page 439).

303

Operation Tires and wheels

See an authorized Mercedes-Benz Center for information on tested and recommended rims and tires for summer and winter operation. They can also offer advice concerning tire service and purchase.

Warning!

Replace rims or tires with the same designa- tion, manufacturer and type as shown on the original part. See an authorized Mercedes-Benz Center for further informa- tion. If incorrectly sized rims and tires are mounted: 앫 The wheel brakes or suspension

components can be damaged.

앫 The operating clearance of the wheels and the tires may no longer be correct.

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Warning!

Important guidelines

Worn, old tires can cause accidents. If the tire tread is badly worn, or if the tires have sustained damage, replace them.

When replacing rims, only use genuine Mercedes-Benz wheel bolts specified for the particular rim type. Failure to do so can result in the bolts loosening and possibly an accident.

Retreaded tires are not tested or recom- mended by Mercedes-Benz, since previous damage cannot always be recognized on retreads. The operating safety of the vehicle cannot be assured when such tires are used.

앫 Only use sets of tires and rims of the

same type and make.

앫 Tires must be of the correct size for the

rim.

앫 Break in new tires for approximately

60 miles (100 km) at moderate speeds.

앫 Regularly check the tires and rims for

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

앫 If vehicle is heavily loaded, check tire

inflation pressure and correct as required.

앫 Do not allow your tires to wear down too far. Adhesion properties on wet roads are sharply reduced at tread depths under 1/8 in (3 mm).

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

Tire care and maintenance

Warning!

Regularly check the tires for damage. Dam- aged tires can cause tire inflation pressure loss. As a result, you could lose control of your vehicle.

Worn, old tires can cause accidents. If the tire tread is badly worn, or if the tires have sustained damage, replace them.

Regularly check your tire inflation pressure at least once a month. For more informa- tion on checking tire inflation pressure see “Recommended tire inflation pressure” (컄 page 313).

Tire inspection Every time you check your tire inflation pressure, you should also inspect your tires for wear and damage for the following: 앫 excessive treadwear (컄 page 306) 앫 cord or fabric showing through the

tire’s rubber

앫 bumps, bulges, cuts, cracks, or splits in

the tread or side of the tire

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

Operation Tires and wheels

Life of tire The service life of a tire is dependent upon varying factors including but not limited to: 앫 Driving style 앫 Tire inflation pressure 앫 Distance driven

Warning!

Tires and spare tire should be replaced after six years, regardless of the remaining tread.

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Operation Tires and wheels

Tread depth Do not allow your tires to wear down too far. Adhesion properties on wet roads are sharply reduced at tread depths under 1/8 in (3 mm). Treadwear indicators (TWI) are required by law. These indicators are located in six places on the tread circumference and become visible at a tread depth of approx- imately 1/16 in (1.6 mm), at which point the tire is considered worn and should be replaced. Recommended minimum tire tread depth: 앫 Summer tires 1/8 in (3 mm) 앫 Winter tires 1/6 in (4 mm)

Warning!

Although the applicable federal motor safety laws consider a tire to be worn when the treadwear indicators (TWI) become visible at approximately 1/16 in (1.6 mm), we recommend that you do not allow your tires

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to wear down to that level. As tread depth approaches 1/8 in (3 mm), the adhesion properties on a wet road are sharply reduced.

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

Storing tires

Keep unmounted tires in a cool, dry place with as little exposure to light as possible. Protect tires from contact with oil, grease and gasoline.

Cleaning tires

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.

1 TWI (Tread Wear Indicator) The treadwear indicator appears as a solid band across the tread.

Operation Tires and wheels

Direction of rotation

Loading the vehicle

앫 The Certification label, also found on

Unidirectional tires offer added advan- tages, such as better hydroplaning perfor- mance. To benefit, however, you must make sure the tires rotate in the direction specified. An arrow on the sidewall indicates the intended direction of rotation (spinning) of the tire.

Spare wheels may be mounted against the direction of rotation (spinning) even with a unidirectional tire for temporary use only until the regular drive wheel has been repaired or replaced. Always observe and follow applicable tempo- rary use restrictions and speed limita- tions indicated on the spare wheel.

Two labels on your vehicle show how much weight it may properly carry. 앫 The Tire and Loading Information

placard (Example A) or the Vehicle Tire Information placard (Example B) can be found on the driver’s door B-pillar. This placard tells you important information about the number of people that can be in the vehicle and the total weight that can be carried in the vehicle. It also contains information on the proper size and recommended tire inflation pres- sures for the original equipment tires on your vehicle.

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

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Operation Tires and wheels

1 Driver’s door B-pillar Following is a discussion on how to work with the information contained on the two placards with regards to loading your vehicle.

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Tire and Loading Information

Placard (Example A)

Warning!

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

Your vehicle is equipped with either the Tire and Loading Information placard (Example A) or the Vehicle Tire Information placard (Example B).

Data shown on placard examples is for illustration purposes only. Load limit data is specific to each vehicle and may vary from data shown in the illustra- tions below. Refer to placard on vehicle for actual data specific to your vehicle.

1 Load limit information on the Tire and

Loading Information placard

The placard showing the load limit informa- tion is located on the driver’s door B-pillar. If your vehicle is equipped with the Tire and Loading Information placard (Example A), locate the statement “The combined weight of occupants and cargo should never exceed XXX kilograms or XXX lbs.” on this placard. The combined weight of all occupants, cargo/luggage and trailer tongue load (if applicable) should never exceed the weight referenced in that statement.

Seating capacity The seating capacity gives you important information on the number of occupants that can be in the vehicle. Observe front and rear seating capacity. Your vehicle is equipped with either placard Example A or placard Example B located on the driver’s door B-pillar (컄 page 308).

Data shown on placard examples is for illustration purposes only. Seating data is specific to each vehicle and may vary from data shown in the illustrations below. Refer to placard on vehicle for actual data specific to your vehicle.

Placard (Example B)

1 Load limit information on the Vehicle

Tire Information placard

The placard showing the load limit informa- tion is located on the driver’s door B-pillar. If your vehicle is equipped with the Vehicle Tire Information placard (Example B), locate the heading “Vehicle Capacity Weight” on this placard. The combined weight of all occupants, cargo/luggage and trailer tongue (if applicable) should never exceed the weight listed next to vehicle capacity weight.

Placard (Example A) 1 Seating capacity

Placard (Example B) 1 Seating capacity

Operation Tires and wheels

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Operation Tires and wheels

Steps for determining correct load limit The following steps have been developed as required of all manufacturers under Title 49, Code of U.S. Federal Regulations, Part 575 pursuant to the “National Traffic and Motor Vehicle Safety Act of 1966”. Step 1 (Vehicles equipped with placard Example A) 왘 Locate the statement “The combined weight of occupants and cargo should never exceed XXX kg or XXX lbs.” on your vehicle’s placard.

Step 1 (Vehicles equipped with placard Example B) 왘 Locate the heading “Vehicle Capacity

Weight” on your vehicle’s placard.

Step 2
왘 Determine the combined weight of the

driver and passengers that will be riding in your vehicle.

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Step 3
왘 Subtract the combined weight of the driver and passengers from XXX kilo- grams or XXX lbs.

Step 4
왘 The resulting figure equals the avail-

able amount of cargo and luggage load capacity. For example, if the “XXX” amount equals 1400 lbs and there will be five 150 lbs passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lbs (1400-750 (5 x150) = 650 lbs).

Step 5
왘 Determine the combined weight of

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

Step 6 (if applicable) 왘 If your vehicle will be towing a trailer,

load from your trailer will be trans- ferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle (컄 page 312).

The following table shows examples on how to calculate total and cargo load capacities with varying seating configura- tions and number and size of occupants. The following examples use a load limit of 1500 lbs. This is for illustration purposes only. Make sure you are using the actual load limit for your vehicle stated on the vehicle’s placard (컄 page 308).

Operation Tires and wheels

Example Combined

weight limit of occu- pants and cargo from placard 1500 lbs

1500 lbs

1500 lbs

Number of occupants (driver and passengers)

Seating configura- tion

Occupants weight

Combined weight of all occupants

Available cargo/luggage and trailer tongue weight (total load limit or vehicle capacity weight from plac- ard minus combined weight of all occupants)

front: 2

rear: 3

front: 1
rear: 2

front:1

Occupant 1: 150 lbs Occupant 2: 180 lbs Occupant 3: 160 lbs Occupant 4: 140 lbs Occupant 5: 120 lbs Occupant 1: 200 lbs Occupant 2: 190 lbs Occupant 3: 150 lbs Occupant 1: 150 lbs

750 lbs

1500 lbs - 750 lbs = 750 lbs

540 lbs

1500 lbs - 540 lbs = 960 lbs

150 lbs

1500 lbs - 150 lbs = 1350 lbs

The higher the weight of all occupants, the less cargo and luggage load capacity is available. For more information, see “Trailer tongue load” (컄 page 312).

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Operation Tires and wheels

Certification label Even after careful determination of the combined weight of all occupants, cargo and the trailer tongue load (if applicable) (컄 page 312) as to not exceed the permis- sible load limit, you must make sure that your vehicle never exceeds the Gross Vehi- cle Weight Rating (GVWR) and the Gross Axle Weight Rating (GAWR) for either the front or rear axle. You can obtain the GVWR and GAWR from the Certification la- bel. The Certification Label can be found on the driver’s door B-pillar, see “Technical data” (컄 page 420).

Gross Vehicle Weight Rating (GVWR): The total weight of the vehicle, all occupants, all cargo, and the trailer tongue load (컄 page 312) must never exceed the GVWR. Gross Axle Weight Rating (GAWR): The to- tal allowable weight that can be carried by a single axle (front or rear). To assure that your vehicle does not ex- ceed the maximum permissible weight limits (GVWR and GAWR for front and rear axle), have the loaded vehicle (including driver, passengers and all cargo and, if ap- plicable, trailer fully loaded) weighed on a suitable commercial scale.

Trailer tongue load The tongue load of any trailer is an impor- tant weight to measure because it affects the load you can carry in your vehicle. If a trailer is towed, the tongue load must be added to the weight of all occupants riding and any cargo you are carrying in the vehicle. The tongue load typically is ten percent of the trailer weight and every- thing loaded in it. Your Mercedes-Benz has been designed primarily to carry passengers and their cargo. Mercedes-Benz does not recom- mend trailer towing with your vehicle.

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Recommended tire inflation pressure

Warning!

Follow recommended tire inflation pressures.

Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being over- heated.

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

Your vehicle is equipped with either the Tire and Loading Information placard (Example A) or the Vehicle Tire Information placard (Example B) located on the driver’s door B-pillar (컄 page 308). The tire inflation pressure should be checked regularly and should only be ad- justed on cold tires. The tires can be con- sidered cold if the vehicle has been parked for at least three hours or driven less than one mile (1.6 km). Follow recommended cold tire inflation pressures listed on placard. Keeping the tires properly inflated provides the best handling, tread life and riding comfort.

Operation Tires and wheels

In addition to the tire placard on the driver’s door B-pillar, also consult the fuel filler flap for any additional information pertaining to special driving situations. For more information, see “Important notes on tire inflation pressure” (컄 page 314).

Data shown on placard examples is for illustration purposes only. Tire data is specific to each vehicle and may vary from data shown in the illustrations below. Refer to placard on vehicle for actual data specific to your vehicle.

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Operation Tires and wheels

Placard (Example A)

Placard (Example B)

1 Tire and Loading Information placard with recommended cold tire inflation pressures

1 Vehicle Tire Information placard with

recommended cold tire inflation pressures

Placard (Example A) lists the recommend- ed cold tire inflation pressures for maxi- mum loaded vehicle weight. The tire inflation pressures listed apply to the tires installed as original equipment.

Placard (Example B) lists the recommend- ed cold tire inflation pressures for maxi- mum loaded vehicle weight. The tire inflation pressures listed apply to the tires installed as original equipment.

Placard (Example B) may list recommended cold tire inflation pressures for different vehicle loads.

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Important notes on tire inflation pressure

Warning!

If the tire inflation pressure repeatedly drops: 앫 Check the tires for punctures from

foreign objects.

앫 Check to see whether air is leaking from

the valves or from around the rim.

Tire temperature and tire inflation pressure are also increased while driving, depending on the driving speed and the tire load. If you will be driving your vehicle at high speeds of 100 mph (160 km/h) or higher, where it is legal and conditions allow, consult the placard on the inside of the fuel filler flap on how to adjust the cold tire inflation pressure. If you do not adjust the tire inflation pressure, excessive heat can build up and result in sudden tire failure.

Be sure to readjust the tire inflation pressure for normal driving speeds. You should wait until the tires are cold before adjusting the tire inflation pressure. Some vehicles may have supplemental tire inflation pressure information for vehicle loads less than the maximum loaded vehicle condition. If such information is provided, it can be found on the placard located on the inside of the fuel filler flap. Tire inflation pressure changes by approxi- mately 1.5 psi (0.1 bar) per 18°F (10°C) of air temperature change. Keep this in mind when checking tire inflation pressure where the temperature is different from the outside temperature.

Checking tire inflation pressure

Regularly check your tire inflation pressure at least once a month. Check and adjust the tire inflation pressure when the tires are cold. The tires can be considered cold if the vehicle has been parked for at least three hours or driven less than one mile (1.6 km). If you check the tire inflation pressure when the tires are warm (the vehicle has been driven for several miles or sitting less than three hours), the reading will be approximately 4 psi (0.3 bar) higher than the cold reading. This is normal. Do not let air out to match the specified cold tire inflation pressure. Otherwise, the tire will be underinflated.

Operation Tires and wheels

Follow the steps below to achieve correct tire inflation pressure: 왘 Remove the cap from the valve on one

tire.

왘 Firmly press a tire gauge onto the

valve.

왘 Read tire inflation pressure on tire gauge and check against the recom- mended tire inflation pressure on the placard on the driver’s door B-pillar (컄 page 314). If necessary, add air to achieve the recommended tire inflation pressure.

컄컄

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Operation Tires and wheels

컄컄

If you have overfilled the tire, release tire inflation pressure by pushing the metal stem of the valve with e.g. a tip of a pen. Then recheck the tire inflation pressure with the tire gauge.

왘 Install the valve cap. 왘 Repeat this procedure for each tire.

The recommended tire inflation pressures for your vehicle can be found on the tire placard located on the driver’s door B-pillar. The tire inflation pressures are not listed in the owner’s manual.

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Warning!

Potential problems associated with underinflated and overinflated tires

Follow recommended tire inflation pres- sures.

Do not overinflate tires. Overinflating tires can result in sudden deflation (blowout) be- cause they are more likely to become punc- tured or damaged by road debris, potholes, etc.

Do not underinflate tires. Underinflated tires wear unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated.

Do not overload the tires by exceeding the specified load limit or vehicle capacity weight as indicated on the placard on the driver’s door B-pillar. Overloading the tires can overheat them, possibly causing a blowout.

Underinflated tire inflation pressure Underinflated tires can: 앫 cause excessive and uneven tire wear 앫 adversely affect fuel economy 앫 lead to tire failure from being

overheated

앫 adversely affect handling

characteristics

Warning!

Follow recommended tire inflation pres- sures.

Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated.

Tire labeling

Besides tire name (sales designation) and manufacturer name, a number of markings can be found on a tire. Following are some explanations for the markings on your vehicle’s tires:

Overinflated tire inflation pressure Overinflated tires can: 앫 adversely affect handling

characteristics

앫 cause uneven tire wear 앫 be more prone to damage from road

hazards

앫 adversely affect ride comfort 앫 increase stopping distance

Warning!

Follow recommended tire inflation pressures.

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

Operation Tires and wheels

1 Uniform Quality Grading Standards

(컄 page 325)

2 DOT, Tire Identification Number (TIN)

(컄 page 322)

3 Maximum tire load (컄 page 323) 4 Maximum tire inflation pressure

(컄 page 324) 5 Manufacturer 6 Tire ply material (컄 page 327) 7 Tire size designation, load and speed

rating (컄 page 318)

8 Load identification (컄 page 321) 9 Tire name

For illustration purposes only. Actual data on tires is specific to each vehicle and may vary from data shown in above illustration. For more information, see “Rims and Tires” (컄 page 424).

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Operation Tires and wheels

Tire size designation, load and speed rating

1 Tire width 2 Aspect ratio in % 3 Radial tire code 4 Rim diameter 5 Tire load rating 6 Tire speed rating

For illustration purposes only. Actual data on tires is specific to each vehicle and may vary from data shown in above illustration.

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General: Depending on the design standards used, the tire size molded into the sidewall may have no letter or a letter preceding the tire size designation. No letter preceding the size designation (as illustrated above): Passenger car tire based on European design standards. Letter “P” preceding the size designation: Passenger car tire based on U.S. design standards. Letter “LT” preceding the size designation: Light Truck tire based on U.S. design standards. Letter “T” preceding the size designation: Temporary spare tires which are high pressure compact spares designed for temporary emergency use only.

Tire width The tire width 1 (컄 page 318) indicates the nominal tire width in mm.

Aspect ratio The aspect ratio 2 (컄 page 318) is the dimensional relationship between tire section height and section width and is expressed in percentage. The aspect ratio is arrived at by dividing section height by section width.

Tire code The tire code 3 (컄 page 318) indicates the tire construction type. The “R” stands for radial tire type. Letter “D” means diag- onal or bias ply construction; letter “B” means belted-bias ply construction. At the tire manufacturer’s option, any tire with a speed capability above 149 mph (240 km/h) can include a “ZR” in the size designation (for example: 245/40 ZR 18). For additional information, see “Tire speed rating” (컄 page 320).

Rim diameter The rim diameter 4 (컄 page 318) is the diameter of the bead seat, not the diameter of the rim edge. Rim diameter is indicated in inches (in).

Tire load rating The tire load rating 5 (컄 page 318) is a numerical code associated with the maximum load a tire can support. For example, a load rating of 91 corre- sponds to a maximum load of 1356 lbs (615 kg) the tire is designed to support. See also “Maximum tire load” (컄 page 323) where the maximum load as- sociated with the load index is indicated in kilograms and lbs.

Warning

The tire load rating must always be at least half of the GAWR (컄 page 328) of your vehi-