Instruments and controls
Operation
Driving
Instrument cluster display
Practical hints
Car care
Technical
data
Index
Instruments and controls
Operation
Driving
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Automatic transmission
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Driving The selector lever is automatically locked while in position “P”. To move the selector lever out of position “P”, the service brake pedal must be firmly depressed before the shift lock will release. Shift selector lever to the desired position only when the engine is idling normally and the service brake is applied. Do not release the brake until ready to drive. The vehicle may otherwise start creeping when the selector lever is in drive or reverse position.
Warning! It is dangerous to shift the selector lever out of “P” or “N” if the engine speed is higher than idle speed. If your foot is not firmly on the brake pedal, the vehicle could accelerate quickly forward on in reverse. You could lose control of the vehicle and hit someone or something. Only shift into gear when the engine is idling normally and when your right foot is firmly on the brake pedal.
Important! After selecting any driving position from “N” or “P”, wait a moment to allow the gear to fully engage before accelerating, especially when the engine is cold.
Accelerator position Partial throttle = early upshifting = normal acceleration Full throttle = later upshifting = rapid acceleration Kickdown (depressing the accelerator beyond full throttle) = downshifting to a lower gear = maximum acceleration. Once the desired speed is attained, ease up on the accelerator — the transmission shifts up again.
Stopping For brief stops, e.g. at traffic lights, leave the transmission in gear and hold vehicle with the service brake. For longer stops with the engine idling, shift into “N” or “P” and hold the vehicle with the service brake. When stopping the vehicle on an uphill gradient, do not hold it with the accelerator, use the brake. This avoids unnecessary transmission heat build up.
Maneuvering To maneuver in tight areas, e.g. when pulling into a parking space, control the vehicle speed by gradually releasing the brakes. Accelerate gently and never abruptly step on the accelerator. To rock a vehicle out of soft ground (mud or snow), alternately shift from forward to reverse, while applying slight partial throttle.
Rocking a vehicle free in this manner may cause the ABS or traction system malfunction indicator lamp to come on. Turn off and restart the engine to clear the malfunction indication.
Warning! Getting out of your vehicle with the selector lever not fully engaged in position “P” is dangerous. Also, when parked on an incline, position “P” alone may not prevent your vehicle from moving, possibly hitting people or objects. Always set the parking brake in addition to shifting to position “P”, see page 238 for parking brake. When parked on an incline, also turn front wheel against curb.
Warning! When leaving the vehicle always remove the electronic key from the starter switch, take the KEYLESS-GO-card (if so equipped) with you and lock the vehicle. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. Children could move the gear selector lever from position “P”, which could result in an accident or serious injury.
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Automatic transmission
232
Selector lever position
The current selector lever position is indicated in the gear range indicator display. The automatic gear shifting process can be adapted to specific operating conditions using the selector lever.
Park position The park position is to be used when parking the vehicle. Engage only with the vehicle stopped. The park position is not intended to serve as a brake when the vehicle is parked. Rather, the driver should always use the parking brake in addition to placing the selector lever in park to secure the vehicle. Note: The electronic key can only be removed from the starter switch with the selector lever in position “P”. With the electronic key removed, the selector lever is locked in position “P”. Reverse gear Shift to reverse gear only with the vehicle stopped. Dependent on the program mode selector switch position “S” or “W” the maximum speed in the reverse gear is different. However, it is not possible to change the program mode while in reverse.
Neutral No power is transmitted from the engine to the drive axle. When the brakes are released, the vehicle can be moved freely (pushed or towed). Do not engage “N” while driving except to coast when the vehicle is in danger of skidding (e.g. on icy roads, see page 246 for winter driving instructions). Important! Coasting the vehicle, or driving for any other reason with selector lever in “N” can result in transmission damage that is not covered by the Mercedes-Benz Limited Warranty. The transmission automatically upshifts through 5th gear. Position “D” provides optimum driving characteristics under all normal operating conditions.
Gear selection for special circumstances The transmission gear ranges for special circumstances can be selected by pressing the selector lever to the right or the left with the selector lever in position “D”. The gear range currently selected is indicated in the instrument cluster display. Briefly press selector lever in the ç direction: The transmission downshifts, one gear at a time, in the order “4”, “3”, “2”, “1”. Press and hold selector lever in the ç direction: The selector lever position display will switch to the gear range currently selected by the automatic transmission. The transmission will only shift down one gear if the gear range currently selected has already shifted to its highest possible gear. Briefly press selector lever in the æ direction: The transmission will shift from the current gear range to the next higher gear range. If the transmission is already in gear range “D”, an additional upshift of one gear is possible.
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Automatic transmission
234
Press and hold selector lever in the æ direction: The transmission will shift from the current gear directly to gear range “D”.
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 loss of control.
Important! With transmission in gear range “D”, “4” or “3”, upshifting from 1st to 2nd to 3rd gear is delayed depending on vehicle speed and engine temperature. This allows the catalytic converter to heat up more quickly to operating temperatures. During the brief warm-up period this delayed upshift and increased engine noise might be perceived as a malfunction. However, neither the engine nor transmission are negatively affected by this mode of operation.
The delayed upshift is effective with vehicle speeds below 31 mph (50 km/h) at partial throttle and engine temperatures below 95°F (35°C). To avoid overrevving the engine when the selector lever is moved to a lower gear range, the transmission will not shift to a lower gear, if the engine’s revolutions per minute limit would be exceeded. In this case there will be no downshift, even when the vehicle speed reaches the engine’s rpm limit of that gear, e.g. by applying the service brakes. To prevent the engine from laboring at low RPM when driving uphill gradients or with your vehicle heavily loaded, the automatic transmission will downshift when necessary to maintain engine RPM within the best torque range.
Gear ranges:
Upshift through 4th gear only. Suitable for performance driving. Upshift through 3rd gear only. Suitable for moderately steep hills. Since the transmission does not shift higher than 3rd gear, this gear selection will allow use of the engine’s braking power downhill.
Upshift through 2nd gear only. For driving in mountainous regions or under extreme operating conditions. This gear selection will allow use of the engine’s braking power when descending steep grades. Use this position, which makes maximum use of the engine’s braking effect, while descending very steep or lengthy downgrades and only at speeds below 40 mph (60 km/h).
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Instruments and controls
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Automatic transmission
Program mode selector switch
236
The transmission is provided with a selector switch (1) for Standard “S” and Winter/Wet (snow and ice) “W” program modes. The program mode currently selected is indicated in the gear range indicator display.
Standard mode Press switch on symbol “S”. Use this mode for all regular driving. The vehicle starts out in 1st gear. Accelerator Operation: Fast on = depressing the accelerator pedal quickly (not into kickdown position) while driving continuously, rather than depressing the accelerator pedal in the usual manner, will cause the automatic transmission to shift down into a lower gear. This gear shifting process is dependent on the current vehicle speed. Fast off = there will be no upshift when releasing the accelerator pedal quickly, e.g. using the engine’s braking power during performance driving.
W Winter/Wet (snow and ice) mode
Press switch on symbol “W”. The vehicle starts out in 2nd gear, except with selector lever in 1st gear, or with accelerator pedal in kick-down position. The “W” mode helps to improve traction and driving stability of the vehicle. The gear shifting process occurs at lower vehicle and engine speeds than in the “S” program mode.
Caution! Never change the program mode when the selector lever is out of position “P”. It could result in a change of driving characteristics for which you may not be prepared.
Important! Always be certain of the program mode selected since the vehicle driving characteristics change with the selection of the program mode. Dependent on the program mode selector switch position “S” or “W” and the gear selector lever in position “R”, the ratio of power transmission changes.
Emergency operation (Limp home mode) If vehicle acceleration worsens or the transmission no longer shifts, the transmission is most likely operating in Limp Home Mode which engages when there is a malfunction of the transmission. This condition may be accompanied by the “CHECK ENGINE” malfunction indicator lamp in the instrument cluster coming on. In this mode only the 2nd gear or reverse gear can be activated. To engage 2nd gear or reverse:
1. Stop the vehicle. 2. Move selector lever to position “P”. 3. Turn off the engine. 4. Wait approx. 10 seconds. 5. Restart the engine. 6. Move selector lever to position “D” (for 2nd gear), or move selector lever to position “R” (for reverse gear).
Have the transmission checked at your authorized Mercedes-Benz Center as soon as possible.
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Instruments and controls
Parking brake
Parking brake
238
To engage, firmly depress parking brake pedal. When the electronic key is in starter switch position 2, the brake warning lamp in the instrument cluster should come on brightly. To release the parking brake, pull handle on instrument panel. The brake warning lamp in the instrument cluster should go out. A warning sounds and the parking brake warning message (see page 302) appears in the multifunction display, if you start to drive without having released the parking brake. Also see brake warning lamp on page 292.
Warning! When leaving the vehicle always remove the electronic key from the starter switch, take the KEYLESS-GO-card (if so equipped) with you and lock the vehicle. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. Children could release the parking brake, which could result in an accident or serious injury.
Driving instructions
Drinking and driving
Warning! Drinking or taking drugs and driving can be a very dangerous combination. Even a small amount of alcohol or drugs can affect your reflexes, perceptions and judgement. The possibility of a serious or even fatal accident is sharply increased when you drink or take drugs and drive. Please don’t drink or take drugs and drive or allow anyone to drive after drinking or taking drugs.
Drive sensibly – save fuel Fuel consumption, to a great extent, depends on driving habits and operating conditions. To save fuel you should: • keep tires at the recommended inflation pressures. • remove unnecessary loads, • remove roof rack when not in use, • allow engine to warm up under low load use, • avoid frequent acceleration and deceleration, • have all maintenance work performed at regular intervals by 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 country.
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Instruments and controls
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Driving instructions
Pedals
240
Brakes
Warning! Keep driver’s foot area clear at all times. Objects stored in this area may impair pedal movement.
Power assistance
Warning! When the engine is not running, the brake and steering systems are without power assistance. Under these circumstances, a much greater effort is necessary to stop or steer the vehicle.
Warning! After driving in heavy rain for some time without applying the brakes or through water 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 effect. Be sure to 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 effectiveness. It may not be possible to stop the vehicle in sufficient time to avoid an accident.
The condition of the parking brake system is checked each time the vehicle is in the shop for the required maintenance service. 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 at an authorized Mercedes-Benz Center immediately. All checks and service work on the brake system should be carried out by an authorized Mercedes-Benz Center. Install only 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.
Caution! 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 the air stream will cool down the brakes faster.
Driving off Apply the service 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. When starting off on a slippery surface, do not allow one drive wheel to spin for an extended period with the ESP switched off. Doing so may cause serious damage to the drive train which is not covered by the Mercedes-Benz Limited Warranty.
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Important! It is advisable to set the parking brake whenever parking or leaving the vehicle. In addition, move selector lever to position “P”. When parking on hills, always set the parking brake.
Driving instructions
Parking
Warning! To reduce the risk of personal injury as a result of vehicle movement, before turning off the engine and leaving the vehicle always: 1. Keep right foot on service brake pedal. 2. Firmly depress parking brake pedal. 3. Move the selector lever to position “P”. 4. Slowly release service brake pedal. 5. Turn front wheels towards the road curb. 6. Turn the electronic key to starter switch
position 0 and remove, or press start-/stop button (vehicles with KEYLESS-GO).
7. Take the electronic key and the KEYLESS-GO-
card (vehicles with KEYLESS-GO) and lock vehicle when leaving.
Tires
Warning! If you feel a sudden significant vibration or ride disturbance, or you suspect that possible damage to your vehicle has occurred, you should turn on the hazard warning flashers, carefully slow down, and drive with caution to an area which is a safe distance from the 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 Center or tire dealer for repairs.
Tread wear 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 (1.5 mm), at which point the tire is considered worn and should be replaced. The tread wear indicator appears as a solid band across the tread.
Warning! Do not allow your tires to wear down too far. As tread depth approaches 1/16 in (1.5 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 pressures must be maintained. This applies particularly if the tires are subjected to high loads (e.g. high speeds, heavy loads, high ambient temperatures).
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.
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Aquaplaning Depending on the depth of the water layer on the road, aquaplaning 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.
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.
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.
We recommend M+S rated radial-ply tires for the winter season for all four wheels to insure normal balanced handling characteristics. On packed snow, they can reduce your stopping distance as compared with summer tires. Stopping distance, however, is still considerably greater than when the road is not snow or ice covered.
Tire speed rating CL 500 and CL 600: Your vehicle is factory equipped with “H”-rated tires, which have a speed rating of 130 mph (210 km/h). Vehicles with Sport Package: Your vehicle is factory equipped with “Y”-rated tires, which have a speed rating of 188 mph (300 km/h). An electronic speed limiter prevents your vehicle from exceeding a speed of 130 mph (210 km/h).
CL 55 AMG: Your vehicle is factory equipped with “Y”-rated tires, which have a speed rating of 188 mph (300 km/h). An electronic speed limiter prevents your vehicle from exceeding a speed of 155 mph (250 km/h). Despite the tire rating, local speed limits should be obeyed. Use prudent driving speeds appropriate to prevailing conditions.
Exceeding the maximum speed for which tires are rated can lead to sudden tire failure causing loss of vehicle control and resulting in personal injury and possible death.
Snow chains Use only snow chains that are tested and recommended by Mercedes-Benz. Your authorized Mercedes-Benz Center will be glad to advise you on this subject. Chains should only be used on the rear wheels. Follow the manufacturer’s mounting instructions. Always select option I or II of the level control system when driving with snow chains, see page 276. Snow chains should only be driven on snow covered roads at speeds not to exceed 30 mph (50 km/h). Remove chains as soon as possible when driving on roads without snow. When driving with snow chains, press the ESP control switch to OFF, refer to page 273.
Warning! Even when permitted by law, never operate a vehicle at speeds greater than the maximum speed rating of the tires.
Important! Use of snow chains is not permissible with tire sizes 245/45 R18 or 275/40 R18.
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246
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 selector lever to position “N”. Try to keep the vehicle under control by corrective steering action. Road salts and chemicals can adversely affect braking efficiency. Increased pedal force may become necessary to produce the normal brake effect. We therefore recommend depressing the brake pedal periodically when traveling at length on salt-strewn roads. This can bring road salt impaired braking efficiency back to normal. A prerequisite is, however, that this be done without endangering other drivers on the road.
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 while observing the safety rules in the previous paragraph.
Warning! If the vehicle becomes stuck in snow, make sure that snow is kept clear of the exhaust pipe and from around the vehicle with engine running. Otherwise, deadly carbon monoxide (CO) gases may enter vehicle interior resulting in unconsciousness and death. To assure sufficient fresh air ventilation, open a window slightly on the side of the vehicle not facing the wind.
Winter driving Have your vehicle winterized at your authorized Mercedes-Benz Center before the onset of winter. • Change the engine oil if the engine contains an oil
which is not approved for winter operation. For viscosity (SAE/CCMC class) and filling quantity, see page 395.
• Check engine coolant anticorrosion/antifreeze
concentration.
• Additive for the windshield washer and headlamp
cleaning system: Add MB Concentrate “S” to a premixed windshield washer solvent/antifreeze which is formulated for below freezing temperatures, see page 334.
• Test battery: Battery capacity drops with decreasing ambient temperature. A well charged battery helps to ensure that the engine can be started, even at low ambient temperatures.
• Tires: We recommend M+S rated radial-ply tires on
all four wheels for the winter season. Observe permissible maximum speed for M+S rated radial-ply tires and the legal speed limit.
In winter operation, the maximum effectiveness of the ABS and ESP can only be achieved with M+S rated radial-ply tires and/or snow chains recommended by Mercedes-Benz. Snow chains maximize performance.
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Driving instructions
Deep water
248
Passenger compartment
Caution! Do not drive through flooded areas or water of unknown depth. If you must drive through deep water, drive slowly to prevent water from entering the engine compartment or passenger compartment, being ingested by the air intake, possibly causing damage to electrical components or wiring, to engine or transmission that is not covered by the Mercedes-Benz Limited Warranty.
Warning! Always fasten items being carried as securely as possible. In an accident, during hard braking or sudden 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.
Block heater (Canada only) The engine is equipped with a block heater. The electrical cable may be installed at your authorized Mercedes-Benz Center.
Traveling abroad Abroad, there is a widely-spread Mercedes-Benz service network at your disposal. If you plan to travel into areas which are not listed in the index of your Mercedes-Benz Center directory, you should request pertinent information from your authorized Mercedes-Benz Center. Driving in countries with left-hand traffic requires the headlamps to be switched over accordingly, see page 362.
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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.
1 Accelerate and set:
Lift lever briefly to set speed. Hold lever up to accelerate.
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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 selected speed is shown for approx. 5 seconds in the multifunction display, and the corresponding speedometer segments from the selected speed to the vehicle maximum speed are illuminated. 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
4 Resume
To cancel the cruise control, briefly push lever to position 3. When you step on the brake pedal or the vehicle speed drops below approx. 25 mph (40 km/h), for example when driving upgrade, the cruise control will be canceled. If the illuminated speedometer segments begin to blink (e.g. when aquaplaning or when moving the gear selector lever to position “N” while driving), the cruise control is automatically switched off. If the cruise control cancels by itself and remains inoperative until the engine is restarted, have the system checked at your authorized Mercedes-Benz Center as soon as possible.
If the lever is briefly pushed to position 4 when driving at a speed exceeding approx. 25 mph (40 km/h), the vehicle resumes the speed which was set prior to the cancellation of the cruise control. The selected speed is shown for approx. 5 seconds in the multifunction display, and the corresponding speedometer segments from the selected speed to the vehicle maximum speed are illuminated. The last memorized speed is canceled when the electronic key in the starter switch is turned to position 1 or 0.
Important! Moving gear selector lever to position “N” switches the cruise control off.
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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.
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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. The “CRUISE CONTROL - - -” message is displayed on the multifunction display when any attempt is made to store speeds below 25 mph (40 km/h) or when an attempt is made to recall a speed when no speed has been stored – the cruise control remains switched off. See malfunction and warning messages on page 297 if the cruise control has a malfunction.
Distronic (DTR) (optional) When activated the Distronic system increases driving convenience, for example over long distances, as it automatically maintains a speed set by the driver by actively regulating the throttle setting. It also maintains within certain limitations a preset distance to a vehicle ahead. With Distronic switched off, the multifunction display continues to show the distance to the vehicle ahead, if so selected, see page 266. The distance notification function can be activated separately, see page 264. In Distronic mode, if the distance sensor detects a slower moving vehicle directly ahead, your vehicle speed will be reduced to the extent permitted by reduced throttle and up to 20% of vehicle braking power, so that you follow that vehicle at a preset distance, see page 265. Maximum range of detection is approximately 500 ft. (150 m).
Any given speed between 25 mph (Canada: 30 km/h) and 110 mph (Canada: 180 km/h) can be maintained with the Distronic by operating the control lever on the steering column.
Warning! Distronic is a convenience system, its speed adjustment reduction capability is intended to make cruise control more effective and usable when traffic speeds vary. It is not, however, intended to nor does it replace the need for extreme care. The responsibility for the vehicle speed and the distance to the vehicle ahead, including most importantly brake operation to assure safe stopping distance, rests always with the driver.
Warning! Distronic requires familiarity with its operational characteristics. We strongly recommend that you review the following information carefully before operating the system.
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Note: For operation in the USA only: This device complies with Part 15, Subpart C, Section 209 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any unauthorized modification to this device could void the user’s authority to operate the equipment
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Warning! Only use Distronic if the traffic and weather conditions make it advisable to travel at a steady speed. Use of Distronic can be dangerous on winding roads or in heavy traffic because conditions do not allow safe driving at a steady speed. Use of Distronic can be dangerous on slippery roads. Rapid changes in tire adhesion can result in wheel spin and loss of control. Distronic does not act upon adverse sight distance conditions. Do not use Distronic during conditions of fog and heavy rain, snow or sleet. 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. Distronic does not recognize accordingly and will not react to stationary objects. It is designed and intended only to maintain a set speed and keep a set distance from moving objects in front of it.
3 Canceling
To cancel Distronic, briefly push lever to position 3. The last set speed remains stored in memory.
4 Resume
• If the lever is briefly pulled to position 4 when
driving at a speed above approx. 25 mph (Canada: 30 km/h), the vehicle resumes the speed which was selected prior to the cancellation of Distronic.
• For minor increases of speeds in increments of 1 mph (Canada: 1 km/h) – briefly pull lever to position 4.
The last memorized speed is canceled when the electronic key in the starter switch is turned to position 1 or 0.
The speed stored in memory is displayed in the multifunction display, and one or two segments around the stored speed light up in the speedometer dial, see page 267.
1 Accelerate and set:
To increase the speed by 5 mph (Canada: 10 km/h) – briefly lift lever up. 2 Decelerate and set:
To reduce the speed by 5 mph (Canada: 10 km/h) – briefly depress lever.
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Activation of Distronic
P54.70-2154-26
Any given speed above approximately 25 mph (Canada: 30 km/h) can be maintained: • Normally the vehicle is accelerated to the desired
speed with the accelerator.
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• Speed is set by briefly moving the control lever to
position 1 or 2. The stored speed is displayed in the multifunction display for approx. 5 seconds (see also page 266), and one or two segments around the stored speed light up on the speedometer dial (see also page 267).
• Remove foot from the accelerator. • When briefly lifting the control lever to position 1,
the vehicle speed will increase in increments of 5 mph (Canada: 10 km/h). The stored speed is displayed in the multifunction display for approx. 5 seconds (see also page 266), and one or two segments around the stored speed light up on the speedometer dial (see also page 267).
• When briefly lowering the control lever to
position 2, the vehicle speed will decrease in increments of 5 mph (Canada: 10 km/h). The stored speed is displayed in the multifunction display for approx. 5 seconds (see also page 266), and one or two segments around the stored speed light up on the speedometer dial (see also page 267).
• For a more precise setting the speed can be
increased in increments of 1 mph (Canada: 1 km/h) by briefly pulling the control lever in direction (4).
Caution! If the driver’s foot is not fully removed from the accelerator pedal, the Distronic control system will be overridden and it will not regulate the preset vehicle speed and following distance. The vehicle speed and following distance will be determined only by the accelerator pedal position.
Warning! Distronic brakes (up to 20% of vehicle braking power) the vehicle to restore the preset distance or to maintain the speed. The brake pedal is automatically retracted as this happens. Keep driver’s foot area clear at all times, including the area under the brake pedal. Objects stored in this area may impair pedal movement which could interfere with the braking ability of the Distronic system. Do not place your foot under the brake pedal – your foot could become caught.
Invalid attempts to activate The multifunction display will show “–––” during invalid attempts to activate Distronic: • below a speed of approx. 25 mph
(Canada: 30 km/h),
• while the electronic stability program (ESP) is
switched off – ESP warning lamp v in speedometer dial is illuminated, see page 114,
• by moving the distronic control lever in “RESUME”
direction (4) when no speed is stored in memory,
• during the initialization and self-test phase after the
engine is started – this can take up to 2 minutes,
• while depressing the service brake pedal, • while the parking brake is set – check ; warning
lamp (Canada: !) in instrument cluster, see page 114,
• with the gear selector lever in position “P”, “R” or “N” – check gear range indicator display in instrument cluster, see page 114.
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• the gear selector lever is moved to position “N”, • the electronic stability program (ESP) is active, • the electronic stability program (ESP) is switched off
manually,
• Model CL 55 AMG only:
the vehicle speed exceeds approximately 160 mph (260 km/h).
Note: A signal sounds and the message “DTR OFF” appears for 5 seconds in the multifunction display everytime Distronic is deactivated.
Deactivation of Distronic Briefly move the distronic control lever in “OFF” direction (3) – the stored speed remains in the memory until the electronic key in the starter switch is turned to position 1 or 0. Distronic is also deactivated if: • the service brake pedal is depressed, • the parking brake is activated, • the vehicle decelerates to less than approximately 25 mph (Canada: 30 km/h), e.g. while maintaining the distance to the vehicle ahead.
Warning! The Distronic switches off and releases the brakes when the vehicle decelerates below the minimum speed of 25 mph (Canada: 30 km/h) by operation of the system. At that time, the driver must apply the brakes in order to reduce vehicle speed further or bring it to a stop.
from the speed of the vehicle in front up to your vehicle’s selected speed. See also page 266 for notes on the multifunction displays.
Warning! Distronic brakes (up to 20% of vehicle braking power) the vehicle to restore the preset distance or to maintain the speed. The brake pedal is automatically retracted as this happens. Keep driver’s foot area clear at all times, including the area under the brake pedal. Objects stored in this area may impair pedal movement which could interfere with the braking ability of the Distronic system. Do not place your foot under the brake pedal – your foot could become caught.
Driving with Distronic activated
With the electronic key in starter switch position 2, the distance warning lamp l in the speedometer dial comes on and goes out with the engine running. If the distance sensor detects a slower vehicle moving in front, your vehicle speed will be reduced by deceleration and braking of up to 20% of the vehicle braking capacity, so that you follow the vehicle ahead at the preset distance, see page 265. Segments in the speedometer illuminate to indicate the speed range
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Warning! A continuous warning sounds and the distance warning lamp in the speedometer dial is illuminated if the Distronic system calculates that the distance to the vehicle ahead and your vehicle’s current speed indicate that Distronic will not be capable of slowing the vehicle sufficiently to maintain the preset following distance, which creates a danger of a collision. Immediately brake the vehicle to increase the distance to the vehicle in front of you. The warning sound is intended as a final caution that you have not interceded with your own braking inputs to avoid a potentially dangerous situation. Do not wait for the operation of the warning signal to intercede with your own braking as that will result in potentially dangerous emergency braking which will not always result an impact being avoided. Tailgating increases the risk of an accident.
The distance warning sound continues until the driver activates the brake pedal, or the preset distance is obtained. As soon as the preset distance is obtained, the distance warning lamp goes out.
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Caution! If the driver’s foot is not fully removed from the accelerator pedal, the Distronic control system will be overridden and it will not regulate the preset vehicle speed and following distance. The vehicle speed and following distance is determined only by the accelerator pedal position. Distronic works on steep uphill and downhill gradients by downshifting gears and applying the brakes to maintain the speed selected by the driver. The transmission will upshift again once the gradient evens out. 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. Distronic is deactivated if a vehicle in front causes your vehicle to slow down to less than approx. 25 mph (Canada: 30 km/h). A signal sounds and the message “DTR OFF” appears for 5 seconds in the multifunction display.
Additional driving hints
Warning! Distronic works to maintain the speed selected by the driver unless a moving obstacle proceeding directly ahead of it in the same travel direction is detected (e.g. following another vehicle ahead at a distance set by Distronic). This means that:
• your vehicle can pass another vehicle after you
change lanes,
• while in a sharp turn or if the vehicle in front is in a sharp turn, Distronic could lose sight of a vehicle traveling in front of it, then your vehicle could accelerate to the previously selected speed.
Distronic regulates only the distance between your vehicle and those directly ahead, but does not register stationary objects in the roadway, e.g.:
• a stopped vehicle in a traffic jam. • a disabled vehicle. • an oncoming vehicle.
The driver must always be on the alert and observe all traffic and intercede with steering and braking inputs as necessary.
Important! When starting the engine, Distronic goes through an initialization and self-test phase. The most likely cause for a malfunctioning system is caused by a dirty sensor (located behind the hood grille), especially at times of snow and ice or heavy rain. In such a case, Distronic will switch off, and the message “DISTRONIC – CLEAN SENSOR!” appears in the multifunction display.
Warning! Distronic should not be used in snowy or icy road conditions.
For cleaning and care of the Distronic sensor see page 378. The following are some sample situations which may influence the functions of Distronic.
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Traveling through turns or bends in the roadway may result in Distronic detecting a moving vehicle traveling in front but not in your lane of travel, causing your vehicle to brake late or unexpectedly. You must be prepared to intercede with accelerator or brake application as necessary.
The Distronic system’s detection zone is relatively narrow at the start and becomes broader as it senses further from the vehicle. Thus, Distronic may not recognize another vehicle coming into your path close to the front of your vehicle. You must be prepared to intercede with braking or steering as necessary. A vehicle not traveling directly in front of you could cause detection problems, the actual distance to that vehicle really being much shorter.
A vehicle changing lanes at close range is only recognized when entering the area scanned by Distronic. You must apply the service brakes to gain sufficient distance to the vehicle ahead.
A narrow vehicle (e.g. a motorcycle) is only recognized when entering the area scanned by Distronic. You must apply the service brakes to gain sufficient distance to the vehicle ahead.
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Distance notification function Even if Distronic is deactivated, the distance to the vehicle ahead continues to be measured, see page 266 for multifunction display. The Distronic lamp in the speedometer dial illuminates to advise the driver of a situation which under normal braking conditions and dry surfaces should have been addressed by the driver. The distance notification function can be activated separately, see page 265. It operates when driving at speeds above approx. 25 mph (Canada: 30 km/h). When recognizing a stationary obstacle or a slower vehicle moving in the vehicle’s path and the danger of a collision exists, the distance warning lamp in the speedometer dial lights up and simultaneously a continuous warning sounds.
Note: Model CL 55 AMG only: Distance notification function is deactivated if the vehicle speed exceeds approximately 160 mph (260 km/h).
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Important! With the Distronic switched off, only the distance notification function operates, meaning the vehicle does not slow down.
Warning! If the distance warning lamp in the speedometer dial lights up while driving and a continuous warning sounds, immediate attention on the part of the driver is required. As required by the traffic situation, apply the service brakes and navigate around a possible obstacle. However, do not drive by relying on the distance notification function as that will result in an emergency braking application which, especially depending on road surface conditions and driver reaction, will not always be able to avoid a collision.
Important! Complex driving situations are not always fully recognized by Distronic, which could result in wrong or missing distance warnings. See page 261 for additional driving hints.
Distronic settings
1 Switch – for distance notification function 2 Thumbwheel – for setting distance
Distronic provides a safe following distance range to the vehicle in front. The medium setting is noticeable by a detent in the center position of the thumbwheel (2). If you want to: • Increase distance – turn thumbwheel (2)
towards ¯.
• Decrease distance – turn thumbwheel (2)
towards ®.
Warning! It is up to the driver to exercise discretion to select the appropriate setting given road conditions, traffic, driver’s preferred driving style and applicable laws and driving recommendations for safe following distance.
To switch the distance notification function on or off: To switch on – press upper half of switch (1). The indicator lamp in the switch lights up. To switch off – press lower half of the switch (1). The indicator lamp in the switch goes out. For distance notification function see page 264. Notes: With the distance notification function activated, you will still be advised by a continuous audible warning if a potential emergency braking circumstance has been detected, even if Distronic has been deactivated. The last selected notification function mode (on/off) will be stored in memory, even when removing the electronic key from the starter switch.
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Multifunction displays
266
1 Distronic is deactivated. The actual distance (5) and
the should-be distance (6) to the vehicle ahead (4) are displayed.
2 Distronic is activated. The display shows the
selected speed for approx. 5 seconds.
3 Distronic is activated. The message “DTR OFF”
appears for approx. 5 seconds when Distronic is being deactivated.
4 Vehicle ahead.
Only appears if a vehicle is detected ahead.
5 Actual distance to vehicle ahead. 6 Should-be distance to vehicle ahead (as calculated
by Distronic). 7 Own vehicle.
To call up Distronic display: Press button è or ÿ on the multifunction steering wheel repeatedly until the display (1 or 3) appears.
P54.30-3759-27
Displays in the speedometer dial
When Distronic system is activated, one or two segments around the speed stored in memory light up in the speedometer dial.
If a vehicle is detected ahead, those segments in the speedometer dial light up that indicate the speed range from the speed of the vehicle in front up to the Distronic stored speed. When the vehicle in front can no longer be detected, only the segments around the stored speed light up. The vehicle is accelerated to the stored speed.
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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. If the BAS warning message is displayed, a malfunction has been detected in the system. The brake system functions in the usual manner, but without BAS. With the ABS malfunctioning, the BAS is also switched off. If a BAS warning message is displayed, have the BAS checked at your authorized Mercedes-Benz Center as soon as possible.
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).
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.
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ABS control The ABS malfunction indicator lamp - in the instrument cluster comes on with the electronic key in starter switch 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. For ABS malfunction indicator lamp, see page 294. With the ABS malfunctioning, the BAS and ESP 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.
If the ABS malfunction indicator lamp stays illuminated, have the system checked at your authorized Mercedes-Benz Center as soon as possible.
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 a 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.
Note: To alert following vehicles to slippery road conditions you discover, operate your hazard warning flashers as appropriate.
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 page 351, towing the vehicle), the engine must be shut off (electronic key in starter switch position 0 or 1). Otherwise, the ESP will immediately be engaged and