2001 Mercedes-benz M Class Owners Manual

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

Driving instructions

189

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Driving instructions

Trailer towing

190

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 contained in this guide can result in serious injury. Follow the guidelines below carefully to assure safe trailer operation. Ask your authorized Mercedes-Benz Light Truck Center should you require an explanation of information contained in this guide.

Trailer Hitches Only install a trailer hitch receiver approved for your vehicle. For information on availability and installation, please see your authorized Mercedes-Benz Light Truck Center. The 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. To reduce the possibility of damage, remove the hitch ball adaptor 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. An additional four-pole conversion plug is included in the Mercedes-Benz supplied trailer hitch receiver kit. For further information, please see your authorized Mercedes-Benz Light Truck Center. In order to prevent possible damage to the vehicle’s electrical system by incorrectly installing the trailer wiring plug, we recommend having the harness connected at an authorized Mercedes-Benz Light Truck Center.

Vehicle and trailer weights and ratings Gross Vehicle Weight Rating (GVWR) is the maximum permissible vehicle weight: 6005 lbs. (2724 kg) Gross Vehicle Weight (GVW): comprises weight of vehicle including fuel, tools, spare wheel, installed accessories, passengers, cargo and trailer tongue. It must never exceed the GVWR. Gross Axle Weight Rating (GAWR) is the maximum permissible axle weight:

front rear

2755 lbs. 3527 lbs.

(1250 kg) (1600 kg)

Gross Trailer Weight (GTW) is the maximum permissible trailer weight to be towed: 5000 lbs. (2260 kg) Trailer Tongue Weight Rating (TWR) is the maximum permissible weight of the trailer tongue: [500 lbs. (225 kg) limit for MB approved hitch receiver]

Driving instructions

191

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Driving instructions

192

Loading a trailer When loading a trailer, you should observe that neither the permissible GTW, nor the GVWR are exceeded. 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. We recommend loading the trailer in such a manner that it has a tongue weight (TW) between 10% and 15% of the GTW. The tongue weight at the hitch ball must be added to the GVW to prevent exceeding your Mercedes-Benz tow vehicle’s rear GAWR.

Checking weights of vehicle and trailer To assure that the tow vehicle and trailer are in compliance with the maximum permissible weight limits, and to know the actual weights, have the loaded rig (tow vehicle including driver, passengers and cargo, trailer fully loaded) weighed on a commercial scale. Check the vehicle’s front and rear Gross Axle Weight (GAW), the GTW and TW. The values as measured must not be exceeded, according to the weight listed under “Vehicle and trailer weight and ratings”.

Attaching a trailer Please observe maximum permitted trailer dimensions (width and length). Most states and all Canadian provinces require safety chains between your tow vehicle and the trailer. The chains should be crisscrossed under the trailer tongue. They must be attached to the hitch receiver, and not to the vehicle’s bumper or axle. Be sure to leave enough slack in the chains to permit turning corners. Most states and all Canadian provinces require a separate brake system at various trailer weights.

Caution! 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.

The provided vehicle electrical wiring harness for trailer towing has a brake signal wire (color orange) for hook-up to a brake controller. Most states and all Canadian provinces require a break-away switch on trailers with a separate brake system. The switch activates the trailer brakes in the possible event that the trailer might separate from the tow vehicle. You should consider using a trailer sway control system. For further information see your authorized Mercedes-Benz Light Truck Center.

Driving instructions

193

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Driving instructions

194

Towing a trailer There are many different laws, including speed limit restrictions, having to do with trailer towing. Make sure that 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. Before you start driving with the trailer, check the trailer hitch, break-away switch, safety chains, electrical connections, lighting and tires. Also adjust the mirrors to permit unobstructed view beyond rear of trailer. If the trailer has electric brakes, start your vehicle and trailer moving slowly, and then apply only the trailer brake controller by hand to be sure the brakes are working properly. When towing a trailer, check occasionally to be sure that the load is secure, and that lighting and trailer brakes (if so equipped) are functioning properly. Always secure items in the trailer to prevent load shifts while driving. Take into consideration that when towing a trailer, the handling characteristics are different and less stable from those when operating the vehicle without a trailer. It is important to avoid sudden maneuvers.

The 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 side wind gusts, and requires more sensitive steering input. In 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. If 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.

Caution! If the trailer should begin to sway, reduce the vehicle’s speed and use the brake controller by hand to straighten out the vehicle and trailer. In no case should you attempt to straighten out the tow vehicle and trailer by increasing the speed or oversteering and stepping on the brakes.

If the transmission hunts between gears on inclines, manually shift to a lower gear (select “4”, “3”, “2” or “1”). A lower gear and reduction of speed reduces the chance of engine overloading and/or overheating.

At very steep inclines, not manageable with selector lever in position “1”, switch transfer case to LOW RANGE, see page 209 for instructions on how to engage LOW RANGE. When going down a long hill, shift into a lower gear and use the engine’s braking effect. Avoid riding the brakes, thus overheating the vehicle and trailer brakes. If the engine coolant rises to an extremely high temperature (coolant temperature needle approaching the red zone) when the air conditioner is on, turn off the air conditioner. 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 hot position. Extreme 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.

Parking

Warning! To reduce the risk of personal injury, or damage to the vehicle powertrain, as a result of vehicle/trailer movement, always: 1. Keep right foot on brake pedal. 2. Shift gear selector lever to position “N”. 3. Have a second person place wheel chocks on downhill side of left and right trailer wheels.

4. Slowly release brake pedal and let vehicle and

trailer roll into chocks until stopped. 5. Firmly depress parking brake pedal. 6. Move gear selector lever to position “P”. 7. On inclines turn front wheels towards the road

curb.

Driving instructions

195

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Driving systems

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Cruise control

The cruise control allows you to drive in a more relaxed manner, for example over long distances, as it automatically maintains the set speed by actively regulating the throttle setting. Any given speed above approximately 25 mph (40 km/h) can be maintained with the cruise control by operating the lever.

196

1 Accelerate and set:

Lift lever briefly to set speed. Hold lever up to accelerate.

2 Decelerate and set:

Depress lever briefly to set speed. Hold lever down to decelerate. Normally the vehicle is accelerated to the desired speed with the accelerator. Speed is set by briefly pushing the lever to position 1 or 2. The accelerator can then be released. The speed can be increased (e.g. for passing) by using the accelerator. After the accelerator is released, the previously set speed will be resumed automatically. If a set speed is to be increased or decreased slightly, e.g. to adapt to the traffic flow, hold lever in position 1 or 2 until the desired speed is reached, or briefly tip the lever in the appropriate direction for increases or decreases in 0.6 mph (1 km/h) increments. When the lever is released, the newly set speed remains.

3 Canceling

To cancel the cruise control, briefly push lever to position 3. When you step on the brake pedal or the vehicle speed drops below approximately 25 mph (40 km/h), for example when driving upgrade, the cruise control will be canceled. If the cruise control cancels by itself and remains inoperative until the engine is restarted, have the system checked at your authorized Mercedes-Benz Light Truck Center as soon as possible.

4 Resume

If the lever is briefly pushed to position 4 when driving at a speed exceeding approximately 25 mph (40 km/h), the vehicle resumes the speed which was set prior to the cancellation of the cruise control. The last memorized speed is canceled when the key in the steering lock is turned to position 1 or 0.

Important! Moving gear selector lever to position “N” switches the cruise control off.

Warning! Only use the cruise control if the traffic and weather conditions make it advisable to travel at a steady speed.

• The use of cruise control can be dangerous on

winding roads or in heavy traffic because conditions do not allow safe driving at a steady speed.

• The use of cruise control can be dangerous on slippery roads. Rapid changes in tire adhesion can result in wheel spin and loss of control.

The “Resume” function should only be operated if the driver is fully aware of the previously set speed and wishes to resume this particular preset speed.

Driving systems

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

197

Instruments and controls

Driving systems

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Notes: If the engine does not brake the vehicle sufficiently while driving on a downgrade, the speed you set on the cruise control may be exceeded. In this case the automatic transmission shifts down (max. to 3rd gear) to maintain the set cruise control speed by using the engine’s braking power. As soon as the grade eases, the automatic transmission shifts up again dependent on the selector lever position. Nevertheless, in some cases you may have to step on the brake pedal to slow down. In this case the cruise control is switched off. Use the lever to resume the previously set speed.

198

Transmission in LOW RANGE mode The cruise control should not be activated during off- road driving in the LOW RANGE mode. Doing so could reduce driving comfort.

Trailer operation When towing a trailer, do not allow engine speed to drop too low on inclines. Select a lower range (“3”, “2” or “1”) in time, depending on the degree of the incline. This is also valid with cruise control activated. At extreme inclines switch to LOW RANGE mode, see page 209.

Note: For detailed information see trailer towing on page 190.

Brake assist system (BAS)

Warning! BAS cannot prevent the natural laws of physics from acting on the vehicle, nor can it increase braking efficiency beyond that afforded by the condition of the vehicle brakes and tires or the traction afforded. The BAS cannot prevent accidents, including those resulting from excessive speed in turns, following another vehicle too closely, or aquaplaning. Only a safe, attentive, and skillful driver can prevent accidents. The capabilities of a BAS equipped vehicle must never be exploited in a reckless or dangerous manner which could jeopardize the user’s safety or the safety of others.

The BAS is designed to maximize the vehicle’s braking capability during emergency braking maneuvers by having maximum power boost applied to the brakes more quickly in emergency braking conditions than might otherwise be afforded solely by the driver’s braking style. This can help reduce braking distances over what ordinary driving and braking style might do. The BAS complements the antilock brake system (ABS). Applying the brakes very quickly results in maximum BAS assistance. To receive the benefit of the system you must apply continuous full braking power during the stopping sequence. Do not reduce brake pedal pressure. Once the brake pedal is released, the BAS is deactivated. The malfunction indicator lamp for the electronic stability program (ESP) is combined with the BAS malfunction indicator lamp.

Driving systems

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

199

Instruments and controls

Driving systems

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

The BAS/ESP malfunction indicator lamp in the instrument cluster comes on with the key in steering lock position 2 and should go out with the engine running. If the BAS /ESP malfunction indicator lamp comes on permanently while the engine is running, a malfunction has been detected in either system. As a result, it is possible that now only partial engine output will be available. If the BAS malfunctions, the brake system functions in the usual manner, but without BAS.

200

If the charging voltage falls below 10 volts, the malfunction indicator lamp comes on and the BAS and the ESP are switched off. When the voltage is above this value again, the malfunction indicator lamp should go out and the BAS is operational. With the ABS malfunctioning, the BAS is also switched off. Both malfunction indicator lamps come on with the engine running. If the BAS /ESP malfunction indicator lamp stays illuminated, have the BAS or ESP checked at your authorized Mercedes-Benz Light Truck Center as soon as possible.

Antilock brake system (ABS)

Warning! Do not pump the brake pedal, rather use firm, steady brake pedal pressure. Pumping the brake pedal defeats the purpose for ABS and significantly reduces braking effectiveness.

Important! The ABS improves steering control of the vehicle during hard braking maneuvers. The ABS prevents the wheels from locking up above a vehicle speed of approximately 5 mph (8 km/h) independent of road surface conditions. At the instant one of the wheels is about to lock up, a slight pulsation can be felt in the brake pedal, indicating that the ABS is in the regulating mode. Keep firm and steady pressure on the brake pedal while experiencing the pulsation. Continuous steady brake pedal pressure results in applying the advantages of the ABS, namely braking power and ability to steer the vehicle.

In the case of an emergency brake maneuver keep continuous full pressure on the brake pedal. In this manner only can the ABS be most effective. On slippery road surfaces, the ABS will respond even with light brake pedal pressure because of the increased likelihood of locking wheels. The pulsating brake pedal can be an indication of hazardous road conditions and functions as a reminder to take extra care while driving.

ABS control The ABS malfunction indicator lamp - in the instrument cluster comes on with the key in steering lock position 2 and should go out with the engine running. When the ABS malfunction indicator lamp - in the instrument cluster comes on while the engine is running, it indicates that the ABS has detected a malfunction and has switched off. In this case, the brake system functions in the usual manner, but without antilock assistance. With the ABS malfunctioning, the BAS, EBP, ESP and 4-ETS+ are also switched off. The malfunction indicator lamps come on with the engine running.

Driving systems

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

201

Instruments and controls

Driving systems

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

202

If the charging voltage falls below 10 volts, the malfunction indicator lamp comes on and the ABS is switched off. When the voltage is above this value again, the malfunction indicator lamp should go out and the ABS is operational. If the ABS malfunction indicator lamp stays illuminated, have the system checked at your authorized Mercedes-Benz Light Truck Center as soon as possible.

Notes: To alert following vehicles to slippery road conditions you discover, operate your hazard warning flashers as appropriate. Operating the vehicle on a single axle dynamometer should only be done for briefly testing the brakes. To do so, move selector lever to position “N”. The engine must be shut off (key in steering lock position 0 or 1).

Warning! ABS cannot prevent the natural laws of physics from acting on the vehicle, nor can it increase braking or steering efficiency beyond that afforded by the condition of the vehicle brakes and tires or the traction afforded. The ABS cannot prevent accidents, including those resulting from excessive speed in turns, following another vehicle too closely, or aquaplaning. Only a safe, attentive, and skillful driver can prevent accidents. The capabilities of an ABS equipped vehicle must never be exploited in a reckless or dangerous manner which could jeopardize the user’s safety or the safety of others.

LOW RANGE – ABS During off-road driving a special low range system for the antilock brake system (ABS) is operational with transmission in LOW RANGE mode, see page 211. When applying the service brakes at speeds below approximately 18 mph (30 km/h), the front wheels are locked cyclically to shorten the braking distance (dig in effect). This affects steering the vehicle.

Four-wheel electronic traction system (4-ETS+) With the key in steering lock position 2, the yellow 4-ETS+ malfunction indicator lamp { and the 4-ETS+ warning lamp v come on and should go out when the engine is running. The 4-ETS+ improves vehicle’s ability to utilize available traction, especially under slippery road conditions. The brakes are applied to the spinning wheel and power is transferred to the wheel(s) with traction. The 4-ETS+ warning lamp v, located in the speedometer dial, starts to flash at any vehicle speed, as soon as the tires lose traction and the wheels begin to spin.

Important! If the 4-ETS+ warning lamp v flashes: • during take-off, apply as little throttle as possible, • while driving, ease up on the accelerator.

Adapt your speed and driving to the prevailing road conditions.

4-ETS+ Control If the yellow 4-ETS+ malfunction indicator lamp { comes on while the 4-ETS+ warning lamp v flashes, the electronic traction system is being switched off temporarily to prevent overheating of the drive wheel brakes. If the 4-ETS+ malfunction indicator lamp { comes on with the engine running, a malfunction has been detected. Have the 4-ETS+ checked at your authorized Mercedes-Benz Light Truck Center as soon as possible. With the ABS malfunctioning, the 4-ETS+ is also switched off.

Caution! If the vehicle is towed with the front axle raised (see towing the vehicle on page 255), or when testing the parking brake on a brake test dynamometer, the engine must be shut off (key in steering lock position 0 or 1). Otherwise, the electronic traction system will immediately be engaged and will apply the rear wheel brakes.

Driving systems

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

203

Instruments and controls

Driving systems

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Note: In winter operation, the maximum effectiveness of the electronic traction system is only achieved with Mercedes-Benz recommended M+S rated radial-ply tires and/or snow chains.

LOW RANGE – 4-ETS+ During off-road driving a special low range system for the four wheel electronic traction system (4-ETS+) is operational with transmission in LOW RANGE mode, see page 211. If one or more tires lose traction while driving downhill (accelerator released), the 4-ETS+ engages and the warning lamp v, located in the speedometer dial, starts to flash.

204

Electronic brake proportioning (EBP) The EBP enhances braking effectiveness by allowing the rear brakes to supply a greater proportion of the braking effort without a loss of vehicle stability. If a warning tone sounds for five seconds and the symbols É and - are displayed in the instrument cluster, the system has detected a malfunction and is switched off. Have the system checked immediately at an authorized Mercedes-Benz Light Truck Center. Failure to do so could result in an accident, since the enhanced braking effect is not available when the system is switched off.

Note: When the EBP is switched off, every time the engine is started, a warning tone will sound for five seconds and the symbols É and - will light up. In addition, whenever the brakes are applied at speeds exceeding 25 mph (40 km/h), the warning tone sounds for five seconds.

Electronic stability program (ESP)

Warning! ESP cannot prevent the natural laws of physics from acting on the vehicle, nor can it increase the traction afforded. The ESP cannot prevent accidents, including those resulting from excessive speed in turns, or aquaplaning. Only a safe, attentive, and skillful driver can prevent accidents. The capabilities of an ESP equipped vehicle must never be exploited in a reckless or dangerous manner which could jeopardize the user’s safety or the safety of others.

The ESP enhances directional control and reduces driving wheel spin of the vehicle under various driving conditions. Over-/understeering of the vehicle is counteracted by applying brakes to the appropriate wheel to create a countervailing vehicle movement. Engine torque is also limited. The ESP warning lamp, located in the speedometer dial, starts to flash when ESP is in operation.

Important! If the ESP warning lamp v flashes: • During take-off apply as little throttle as possible. • While driving ease up on the accelerator. • Adapt your speed and driving to the prevailing road

conditions.

• Do not switch off the ESP.

Caution! If the vehicle is towed with the front axle raised (see towing the vehicle on page 255), the engine must be shut off (key in steering lock position 0 or 1). Otherwise, the ESP will immediately be engaged and will apply the rear wheel brakes.

Notes: The malfunction indicator lamp for the ESP is combined with that of the BAS. The yellow BAS/ESP malfunction indicator lamp ¿ in the instrument cluster and the yellow ESP warning lamp v in the speedometer dial come on with the key in steering lock position 2. They should go out with the engine running.

205

Driving systems

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Driving systems

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

If the BAS /ESP malfunction indicator lamp ¿ comes on continuously with the engine running, a malfunction has been detected in either system. Only partial engine output will be available. If the BAS malfunctions, the brake system functions in the usual manner, but without BAS. If the BAS/ESP malfunction indicator lamp stays illuminated, have the BAS or ESP checked at your authorized Mercedes-Benz Light Truck Center as soon as possible. With the ABS malfunctioning, the ESP is also switched off. Driving the vehicle with varied size tires will cause the wheels to rotate at different speeds, therefore the ESP may activate (yellow ESP warning lamp v in speedometer dial comes on). For this reason, all wheels, including the spare wheel, must have the same tire outside diameter.

206

When testing the parking brake on a brake test dynamometer, the engine must be shut off. Otherwise, the ESP will immediately be engaged and will apply the rear wheel brakes. In winter operation, the maximum effectiveness of the ESP is only achieved with Mercedes-Benz recommended M+S rated radial-ply tires and/or snow chains.

Synchronizing ESP If the power supply was interrupted (battery disconnected or empty), the BAS/ESP malfunction indicator lamp may be illuminated with the engine running. After driving off the BAS /ESP malfunction indicator lamp should go out after approximately 110 - 220 yd (100 - 200 m).

ESP control switch

P54.25-2037-26

ESP control switch located in center console. To switch ESP off, press upper half of switch. ESP warning lamp v, located in speedometer dial, comes on. To switch ESP on again, press lower half of switch. ESP warning lamp v, located in speedometer dial, goes out.

To improve the vehicle’s traction when driving with snow chains, or starting off in deep snow, sand or gravel, or off-road driving, switch off ESP by pressing the upper half of the ESP switch. The ESP warning lamp v, located in the speedometer dial, is continuously illuminated.

Warning! ESP should not be switched off during normal driving other than in circumstances described above. Disabling of the system will reduce vehicle stability in standard driving maneuvers. When the ESP warning lamp is illuminated continuously, the ESP is switched off. Adapt your speed and driving to the prevailing road conditions.

With the ESP system switched off, the engine torque reduction feature is cancelled. Therefore, the enhanced vehicle stability offered by ESP is unavailable. Adapt your speed and driving to the prevailing road conditions. A portion of the ESP system remains active, even with the switch in the OFF position.

207

Driving systems

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Driving systems

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

208

LOW RANGE – ESP During off-road driving a special low range system for the electronic stability program (ESP) is operational with transmission in LOW RANGE mode, see page 211. In the LOW RANGE mode the electronic stability program (ESP) operates in a traction improving fashion specifically adapted for off-road driving. At speeds below 27 mph (45 km/h) the ESP assists in over-/ understeering, thus improving vehicle tracking.

If one drive wheel loses traction and begins to spin, the brake is applied until the wheel regains sufficient traction.

Note: Avoid spinning of one drive wheel. This may cause serious damage to the drive train which is not covered by the Mercedes-Benz Limited Warranty. The ESP warning lamp, located in the speedometer dial, starts to flash at any vehicle speed as soon as the tires lose traction and the wheels begin to spin. To return to the enhanced vehicle stability offered by ESP: press lower half of the switch (the ESP warning lamp in the speedometer dial goes out).

Important! If the ESP warning lamp flashes: • during take-off, apply as little throttle as possible, • while driving, ease up on the accelerator.

Transmission control – LOW RANGE mode

The switch is located in the instrument panel.

Important! When switching to or from the LOW RANGE mode, observe the following: • The vehicle must be at a complete standstill. • The engine speed must not exceed 1500 rpm.

Failure to do so may result in transmission/engine damage not covered by the Mercedes-Benz Limited Warranty The LOW RANGE mode should be switched on: • during off-road driving, • when crossing waters. For additional practical hints refer to off-road driving on page 183.

Switching on:

1. Stop the vehicle. 2. Move transmission selector lever to position “N”. 3. Push top end of switch. The LOW RANGE indicator lamp in the instrument cluster blinks slowly during the changeover.

Once the changeover is complete, the indicator lamp in the instrument cluster lights up continuously.

Note: If the indicator lamp blinks fast, one or more switching conditions were not observed, or the LOW RANGE mode is defective.

209

Driving systems

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Driving systems

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

210

Note: If the indicator lamp blinks fast, one or more switching conditions were not observed, or the LOW RANGE mode is defective.

Switching off:

1. Stop the vehicle. 2. Move transmission selector lever to position “N”. 3. Push top end of switch. The LOW RANGE indicator lamp in the instrument cluster blinks slowly during the changeover.

Once the changeover is complete, the indicator lamp in the instrument cluster goes out. Use the gear selector lever normally.

Important! During off-road driving a special low range system for antilock brake system (ABS) and four-wheel electronic traction system (4-ETS+) are operational with transmission in the LOW RANGE mode. In the low range mode the electronic stability program (ESP) operates in a traction improving fashion specifically adapted for off-road driving. At speeds below 27 mph (45 km/h) the ESP assists in over-/ understeering, thus improving vehicle tracking. If one or more tires lose traction while driving downhill (accelerator released), the 4-ETS+ engages and the warning lamp v, located in the speedometer dial, starts to flash. When applying the service brakes at speeds below approximately 18 mph (30 km/h), the front wheels are locked cyclically to shorten the braking distance (dig in effect). This affects steering the vehicle.

Notes: Driving off or driving up to 3 mph (5 km/h) with the service brakes applied lightly (to reduce drive wheel spin), the 4-ETS+ remains engaged. Driving with the service brakes applied lightly at vehicles speeds above 3 mph (5 km/h), the 4-ETS+ will not engage. If the indicator lamp blinks fast, one or more switching conditions were not observed, or the LOW RANGE mode is defective. In the case of a defective in the LOW RANGE mode the transmission shifts in the usual manner. It is not possible to switch on the LOW RANGE mode. Have the transmission checked at your authorized Mercedes-Benz Light Truck Center as soon as possible.

Driving systems

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

211

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

What you should know at the gas station

212

What you should know at the gas station

Fuel supply

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!

Open flap by pulling at rear (arrow). Turn fuel cap to the left and hold on to it until possible pressure in tank has been released, then remove cap. Failure to remove slowly could result in personal injury. The fuel filler cap is tethered to the fuel filler neck. Do not drop the cap. It could damage the vehicle paint finish. Manual release of fuel filler flap, see page 274.

Important! When refueling vehicle make certain that no gasoline comes into contact with plastic taillamp, to prevent damaging the lens.

Fuel To prevent fuel vapors from escaping into open air, fully insert filler nozzle unit. Only fill fuel tank until the filler nozzle unit cuts out – do not top up or overfill.

Warning! Overfilling of fuel tank may result in creating pressure in the system which could cause a gas discharge such as the gas spraying back out upon removing the filler nozzle which could cause personal injury.

Leaving the engine running and the fuel cap open can cause the “CHECK ENGINE” lamp to illuminate. Fuel tank capacity approximately 19.0 US gal (72.0 l). This includes approximately 3.2 US gal (12.0 l) reserve. Use premium unleaded gasoline: Posted Octane Index 91 (Average of 96 RON/86 MON).

• Engine oil

Engine oil level check, see page 89 and page 233. Fill quantity between upper and lower dipstick marking level: 2.1 US qt (2.0 l). Recommended engine oils, see Approved Service Products sheet.

• Coolant

For normal replenishing, use water (potable water quality). For further information (e.g. anticorrosion/ antifreeze), see page 292.

• Spark plugs

Approved spark plugs, see page 290.

• Tire pressure

For tire pressure, refer to tire pressure label inside the fuel filler flap. See page 250 for further details.

• Air conditioner

R-134a refrigerant and special PAG lubricant, see page 294.

What you should know at the gas station

213

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

What you should know at the gas station

214

• Bulbs

high beam: H1 U (55 W), low beam: H7 (55 W) low beam: Xenon D2R - 35 W (optional) fog lamps (optional): H3 U (55 W), turn signal, parking, side marker and standing lamps, front: 1157 (32/3 cp), turn signal lamp, side: W 5 W (168 [3 cp]), stop lamps: P 21 W (1073 [32 cp]), backup lamps: P 21 W (1073 [32 cp]), turn signal lamps, rear: P Y 21 W, tail, parking, side marker, standing, and rear fog lamp, driver’s side: P 21/4 W, license plate lamps: C 5 W (tubular), high mounted stop lamp: P 21 W (1073 [32 cp]).

Check regularly and before a long trip

1 Engine oil level

See “Checking engine oil level” on page 233 and “Engine oil level indicator” on page 89.

2 Coolant level

See “Coolant level” on page 234.

3 Brake fluid

See “Brake fluid” on page 294. 4 Windshield washer system/ Headlamp cleaning system/ Rear window washer system For refilling reservoir see page 236.

Opening hood, see page 231. Vehicle lighting: Check function and cleanliness. For replacement of light bulbs, see “Exterior lamps” on page 260. Exterior lamp switch, see page 90.

Check regulary and before a long trip

215

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instrument cluster display

Malfunction and indicator

lamps in the instrument cluster .................... 218
On-board diagnostic system – Check engine malfunction indicator lamp ............................. 218
Brake warning lamp .................. 219
Supplemental restraint system (SRS) indicator lamp .................. 219
Fuel reserve warning .................220

Electronic stability program (ESP) / Electronic traction system (ETS) – warning lamp ............................. 221
BAS/ESP malfunction indicator lamp ............................ 221
4-ETS malfunction indicator lamp ............................ 221
LOW RANGE indicator lamp ............................ 221
ABS malfunction indicator lamp ............................ 222

Adjustable steering wheel – indicator lamp .............................222
AIRBAG OFF indicator lamp .............................222
Seat belt warning lamp .............223
Charge indicator lamp ...............223
Low engine oil level warning lamp ..............................224
Low engine coolant level warning ..............................224
Brake pad wear indicator lamp .............................225
FSS indicator ...............................225

Contents - Instrument cluster display

217

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Malfunction and indicator lamps

218

Malfunction and indicator lamps in the instrument cluster General information: If a bulb in the instrument cluster fails to light up during the bulb self-check when turning the key in steering lock to position 2, have it checked and replaced if necessary.

On-board diagnostic system Check engine malfunction indicator lamp

CHECK ENGINE

Engine malfunction indicator lamp. If the “CHECK ENGINE” malfunction indicator lamp comes on when the engine is running,

it indicates a malfunction of the fuel management system, emission control system, systems which impact emissions, or the fuel cap is not closed tight (check the fuel cap). If the “CHECK ENGINE” lamp is illuminated continuously and the vehicle is driving normally, you may still drive the vehicle, however, in all cases, we recommend that you have the system checked at your authorized Mercedes-Benz Light Truck Center as soon as possible. If the “CHECK ENGINE” lamp comes on continuously and/or the vehicle is not driving normally (e.g. malfunction of the fuel management system or running

out of fuel), serious damage can occur to the emission system. Please contact your authorized Mercedes-Benz Light Truck Center immediately. The Sequential Multiport Fuel Injection (SFI) control module monitors emission control components that either provide input signals to or receive output signals from the control module. Malfunctions resulting from interruptions or failure of any of these components are indicated by the “CHECK ENGINE” malfunction indicator lamp in the instrument cluster and are simultaneously stored in the SFI control module. If the “CHECK ENGINE” malfunction indicator lamp comes on, have the system checked at your authorized Mercedes-Benz Light Truck Center as soon as possible. With some exceptions, the control module switches off the “CHECK ENGINE” malfunction indicator lamp if the condition, causing the lamp to come on, no longer exists during three consecutive cycles. See also page 220 for fuel cap placement warning. An on-board diagnostic connector is located in the passenger compartment near to the parking brake pedal, allowing the accurate identification of system malfunctions through the readout of diagnostic trouble codes.

Brake warning lamp

Supplemental restraint system (SRS) indicator lamp

When the brake warning lamp appears while the engine is running, this means:

BRAKE

SRS

• there is insufficient brake fluid in the reservoir (engine running and parking brake released), or

• the parking brake is set (engine running) • the electronic brake proportioning (EBP) system is

malfunctioning.

Warning! Driving with the brake warning lamp illuminated can result in an accident. Have your brake system checked immediately if the brake warning lamp stays on. Don’t add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be seriously burned.

Note: If you find that the minimum mark on the brake fluid reservoir is reached, have the brake system checked for brake pad thickness and leaks.

The operational readiness of the airbag system is verified by the indicator lamp “SRS” in the instrument cluster when

turning the key in steering lock to position 1 or 2. If no fault is detected, the lamp will go out after approximately 5 seconds; after the lamp goes out, the system continues to monitor the components and circuitry of the airbag system and will indicate a malfunction by coming on again.

Warning! In the event a malfunction of the “SRS” is indicated as outlined above, the “SRS” may not be operational. For your safety, we strongly recommend that you visit an authorized Mercedes-Benz Light Truck Center immediately to have the system checked; otherwise the “SRS” may not be activated when needed in an accident, which could result in serious or fatal injury, or it might deploy unexpectedly and unnecessarily which could also result in injury.

See page 56 for notes on airbags, page 55 for belt tensioners, and page 65 for infant and child seat restraints.

Malfunction and indicator lamps

219

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Malfunction and indicator lamps

220

Fuel reserve warning

When the warning lamp (1) comes on after starting the engine, or if it comes on while driving, it indicates that the fuel level is down to the reserve quantity of approximately 3.2 gal (12 liters). See page 212 for notes on refueling the vehicle.

Electronic stability program (ESP)/Electronic traction system (4-ETS+) — warning lamp The yellow warning lamp in the speedometer dial comes on with the key in steering lock position 2. It should go out

with engine running. See page 203 for 4-ETS+ and page 205 for ESP if the warning lamp lights up or flashes when the vehicle is moving.

BAS/ESP malfunction indicator lamp

BAS ESP

The malfunction indicator lamp for the ESP is combined with that of the BAS. The yellow BAS /ESP malfunction indicator lamp in the instrument cluster comes on with the key in steering lock position 2. It should go out with the engine running. If the BAS /ESP malfunction indicator lamp remains illuminated with the engine running, see page 199 for BAS and page 205 for ESP.

4-ETS+ malfunction indicator lamp

ETS

The yellow ETS malfunction indicator lamp in the instrument cluster comes on with the key in steering lock position 2. It should go

out with the engine running. If the ETS malfunction indicator lamp remains illuminated with the engine running a malfunction has been detected, see page 203 for 4-ETS+.

LOW RANGE indicator lamp

LOW

RANGE

The yellow LOW RANGE indicator lamp in the instrument cluster comes on with the key in steering lock position 2. With the

LOW RANGE mode deactivated it should go out with the engine running. With the LOW RANGE mode activated the LOW RANGE indicator lamp is illuminated continuously. If the indicator lamp blinks fast, one or more switching conditions were not observed, or the LOW RANGE mode is defective, see page 209 for LOW RANGE mode.

Malfunction and indicator lamps

221

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Malfunction and indicator lamps

222

ABS malfunction indicator lamp

Adjustable steering wheel – indicator lamp

ABS

The ABS malfunction indicator lamp in the instrument cluster comes on with the key in steering lock position 2 and should go out

with the engine running. When the ABS malfunction indicator lamp in the instrument cluster comes on while the engine is running, it indicates that the ABS has detected a malfunction and has switched off. In this case, the brake system functions in the usual manner, but without antilock assistance. With the ABS malfunctioning, the BAS, ESP and 4-ETS+ are also switched off. Both malfunction indicator lamps come on with the engine running. If the charging voltage falls below 10 volts, the malfunction indicator lamp comes on and the ABS is switched off. When the voltage is above this value again, the malfunction indicator lamp should go out and the ABS is operational. Have the system checked at your authorized Mercedes-Benz Light Truck Center as soon as possible. See page 201 for notes on antilock brake system (ABS).

The indicator lamp in the instrument cluster comes on with the key in steering lock position 2 and should go out with the engine running.

If the indicator lamp does not go out after starting the engine, the adjustable steering column is not properly locked. For locking the adjustable telescoping steering column, see page 70.

AIRBAG OFF indicator lamp

The indicator lamp will light up for approximately 6 seconds, extinguish, then blink once, when you turn the key in

steering lock to position 1 or 2. The 7 indicator lamp stays lit as long as a BabySmartTM compatible child seat is properly installed on the front passenger seat. It indicates that the front passenger airbag is switched off. See page 53 for BabySmartTM airbag and its deactivation system.

BabySmartTM is a trademark of Siemens Automotive Corp.

Seat belt warning lamp

With the key in steering lock position 2, the seat belt warning lamp comes on for a short time if the driver’s seat belt is not fastened.

After starting the engine, the warning lamp remains illuminated for a short time to remind the driver and passengers to fasten seat belts.

Charge indicator lamp

Should the charge indicator lamp fail to come on prior to starting when the key is in steering lock position 2 or should it fail to go

out after starting or during operation, this indicates a malfunction which must be repaired at an authorized Mercedes-Benz Light Truck Center immediately.

If the charge indicator lamp comes on while the engine is running, this may indicate that the poly-V-belt has broken. Should this condition occur, the poly-V-belt must be replaced before continuing to operate the vehicle. Otherwise, the engine will overheat due to an inoperative water pump which may result in damage to the engine. Do not continue to drive the vehicle with the charge indicator lamp illuminated. Doing so could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty.

Malfunction and indicator lamps

223

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Malfunction and indicator lamps

224

Low engine oil level warning lamp

Low engine coolant level warning

With the key in steering lock position 2, the oil level warning lamp comes on and should go out when the engine is running.

If the warning lamp does not go out after starting the engine, or comes on with the engine running and at operating temperature, the engine oil level has dropped to approximately the minimum mark on the dipstick. When this occurs, the warning lamp will first come on intermittently and then stay on if the oil level drops further. If no oil leaks are noted, continue to drive to the nearest service station where the engine oil should be topped to the “full” mark on the dipstick with an approved oil. The low engine oil level warning light should not be ignored. Extended driving with the light illuminated could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty. In addition to the warning lamp, the engine oil level should be periodically checked with the dipstick or via the oil level indicator in the odometer display field, for example during a fuel stop, or before a long trip (see engine oil level indicator on page 89 and checking engine oil on page 233).

When the coolant level warning lamp comes on while driving, then the coolant level has dropped below the required level, or the

coolant temperature is in the red zone. If no leaks are noticeable and the engine temperature does not increase, continue to drive to the nearest service station and have coolant added to the coolant system, see page 234. If the engine temperature reaches the red zone, move vehicle to an area which is in a safe distance from the roadway and turn off the engine. Also see coolant temperature gauge on page 81. The low engine coolant level warning should not be ignored. Extended driving with the symbol displayed may cause serious engine damage not covered by the Mercedes-Benz Limited Warranty. In cases of major or frequent minor coolant loss, have the cooling system checked at your authorized Mercedes-Benz Light Truck Center as soon as possible.

Notes: Do not drive without coolant in the cooling system. The engine will overheat causing major engine damage. Monitor the coolant temperature gauge while driving.

Brake pad wear indicator lamp

FSS indicator

With the key in steering lock position 2, the indicator lamp comes on and goes out when the engine is running.

If the indicator lamp lights up during braking, this indicates that the brake pads are worn down. Have the brake system checked at your authorized Mercedes-Benz Light Truck Center as soon as possible.

FSS indicator (Service A), see page 87.

FSS indicator (Service B), see page 87.

The symbols appear in the main odometer display field prior to the next suggested service. Depending on operating conditions throughout the year, the next service is calculated and displayed in days or distance remaining. See page 87 for notes on the flexible service system (FSS).

Malfunction and indicator lamps

225

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Practical hints

First aid kit .....................................228
Fuses ................................................228
Electrical outlet ..............................230
Stowing things in the vehicle ......230
Hood .................................................231
Checking engine oil level .............233
Automatic transmission

fluid level ...................................234
Engine oil consumption ................234
Coolant level ...................................234
Adding coolant ...........................235

Windshield washer/headlamp

cleaning system .........................236
Windshield and headlamp washer fluid mixing ratio ................................237

Vehicle jack, wheel bolt

wrench and screwdriver ......... 237
Air pump ......................................... 239
Wheels ............................................ 240
Tire replacement ....................... 240
Rotating wheels ......................... 241
Spare wheel .................................... 242
Changing wheels ........................... 245
Tire inflation pressure ................. 250
Battery ............................................. 251
Jump starting ................................. 253
Towing the vehicle ........................ 255

Transmission selector lever, manually unlocking .................. 259
Stranded vehicle ............................ 259

Exterior lamps ................................260
Headlamp assembly ...................261
Taillamp assemblies ..................265
Adjusting headlamp aim ...............268
Remote control

battery replacement .................270
Synchronizing remote control ............................271

Emergency operation of

sliding/pop-up roof ...................272

Emergency operation of

Skyview Top ...............................273

Manual release for

fuel filler flap ............................. 274
Replacing wiper blades .................275
Roof rack ......................................... 276

Contents - Practical hints

227

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

First aid kit

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

228

Fuses

Before replacing a blown fuse, determine the cause of the short circuit. Spare fuses and a special fuse puller are supplied inside the fuse box cover. Observe amperage and color of fuse. Always use a new fuse for replacement. Never attempt to repair or bridge a blown fuse. A fuse chart can be found inside the corresponding fuse box cover.

First aid kit

All except model ML 55 AMG: The first aid kit is located behind the cover in the left rear cargo compartment trim panel. Turn both handles (1) left and open cover.

Model ML 55 AMG: The first aid kit is stored inside the spare wheel cover located in the cargo compartment. Open buckles and remove spare wheel cover, see page 242.

Fuse box in engine compartment

Auxiliary fuse box in front passenger footwell

1 Fuse box in engine compartment

To gain access to the fuse box, release clamps (arrows), lift the fuse box cover (1) up and remove it. To close the fuse box, engage back end of cover, close, and secure with clamps.

2 Auxiliary fuse box in front passenger compartment To gain access to the fuse box, turn both locks (3) 90° counterclockwise and remove cover in direction of arrow. To close the fuse box, engage back end of cover, slide the cover towards vehicle front and secure by turning both locks (3) clockwise to the stop.

Fuses

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

229

Instruments and controls

Electrical outlet

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Electrical outlet

Two electrical outlets can be found, one at the front passenger footwell, and the other in the rear compartment (always operational).

230

To open: Flip up cover and insert electrical plug (cigar lighter type).

Note: The electrical outlets can be used to accommodate accessories (e.g. air pump, auxiliary lamps) up to maximum 180 W.

Stowing things in the vehicle

Warning! To help avoid personal injury during a collision or sudden maneuver, always use partition net when transporting cargo. Always fasten items being carried as securely as possible using cargo tie- down rings and fastening materials appropriate for the weight and size of the load.

Hood

To open: To unlock the hood, pull release lever (1) under the driver’s side of the instrument panel. At the same time a handle (2) will extend out of the radiator grill (it may be necessary to lift the hood up slightly).

Caution! To avoid damage to the windshield wipers or hood, open the hood only with wipers in the parked position.

Pull handle (2) to its stop out of radiator grill and open hood (do not pull up on handle).

To close: Lower hood and let it drop into lock from a height of approximately 1 ft. (30 cm). To avoid hood damage, please make sure that hood is fully closed. If not, repeat closing procedure. Do not push down on hood to attempt to fully close it.

Engine compartment

231

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Instruments and controls

Operation

Driving

Instrument cluster display

Practical hints

Car care

Technical

data

Index

Engine compartment

232

Warning! To help prevent personal injury, stay clear of moving parts when the hood is open and the engine is running. Be sure the hood is properly closed before driving. When closing 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 from fan blades.

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, diagnostic socket) of the ignition system

• with the engine running, • while starting the engine,