2013 Mercedes-benz CL Class Owners Manual

Rthe hood is closed.

Rno engine-relevant diagnostics are active. Rthe driver's door is closed and the seat belt

is fastened.

Automatic engine start The engine is started automatically if you: Rrelease the brake pedal when HOLD is not

activated and the transmission is in position D or N

Rshift the transmission to position R Rdepress the accelerator pedal Rswitch off the ECO start/stop function or

switch to drive program S or M

Runfasten your seat belt or open the driver's

door

The engine is also started automatically if: Rthe vehicle starts to roll. Rthe brake system requires this. Rthe system detects moisture on the windshield when the air-conditioning system is switched on.

Rthe temperature in the vehicle interior

deviates from the set range.

Rthe charge level of the battery is too low.

Deactivating/activating the ECO start/ stop function General notes You can deactivate and activate the ECO start/stop function using COMAND (Y page 235). i You can also use the programmable button (Y page 113) to activate and deactivate the ECO start/stop function if you have assigned this function to the button.

Deactivating X Deactivate the ECO start/stop function using COMAND (Y page 235). The ¤ symbol goes out and the Stop/ Start deactivated message is shown in the multifunction display.

Driving 277

i If drive program S or M has been selected,

the ECO start/stop function is always deactivated.

Activating X Activate the ECO start/stop function using COMAND (Y page 235). The ¤ symbol and the Stop/Start active message are shown in multifunction display. If not all conditions for automatic engine switch-off (Y page 276) are fulfilled, the Stop/Start inactive message appears. i If you activate the ECO Start/Stop

function in drive programs S or M, drive program C is selected automatically.

278 Driving

Problems with the engine Problem The engine does not start. The starter motor can be heard.

Possible causes/consequences and M Solutions RThere is a malfunction in the engine electronics. RThere is a malfunction in the fuel supply. X Before attempting to start the engine again, turn the SmartKey in the ignition back to position 0 or press the Start/Stop button repeatedly until all indicator lamps in the instrument cluster go out.

X Try to start the engine again (Y page 274). Avoid excessively

long and frequent attempts to start the engine as these will drain the battery.

If the engine does not start after several attempts: X Consult a qualified specialist workshop. The on-board voltage is too low because the battery is too weak or discharged. X Jump-start the vehicle (Y page 445). If the engine does not start despite attempts to jump-start it: X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high. X Allow the starter motor to cool down for approximately two

minutes.

X Try to start the engine again. If the engine still does not start: X Consult a qualified specialist workshop. There is a malfunction in the engine electronics or in a mechanical component of the engine management system. X Only depress the accelerator pedal slightly.

Otherwise, non-combusted fuel may get into the catalytic converter and damage it.

X Have the cause rectified immediately at a qualified specialist

workshop.

The coolant level is too low. The coolant is too hot and the engine is no longer being cooled sufficiently. X Stop as soon as possible and allow the engine and the coolant

to cool down.

X Check the coolant level (Y page 424). Observe the warning

notes as you do so and add coolant if necessary.

The engine does not start. You cannot hear the starter motor.

The engine is not running smoothly and is misfiring.

The coolant temperature gauge shows a value above 248 ‡ (120 †).

Automatic transmission Important safety notes G WARNING It is dangerous to shift the automatic transmission out of parking position P or neutral position 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 or 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. G WARNING Keep in mind that turning off the engine alone only will shift the automatic transmission into neutral position N automatically. Always shift the automatic transmission into park position P before turning off the engine. Otherwise the vehicle could roll away which could result in an accident and/or serious personal injury.

DIRECT SELECT lever Overview of transmission positions The DIRECT SELECT lever is on the right of the steering column.

Automatic transmission 279

i The DIRECT SELECT lever always returns

to its original position. The current transmission position P, R, N or D appears in the transmission position display (Y page 280) in the multifunction display.

Engaging park position P X Push the DIRECT SELECT lever in the

direction of arrow P.

i The automatic transmission shifts into

park position P automatically: Rif you open the driver's door while the

vehicle is stationary in transmission position D or R

Rif you open the door while traveling at

very low speeds in transmission position D or R

! If the engine speed is too high or the

vehicle is moving, do not shift the automatic transmission directly from D to R, from R to D or directly to P. The automatic transmission could otherwise be damaged.

Engaging reverse gear R ! Only shift the automatic transmission to

R when the vehicle is stationary.

i The ECO start/stop function is not

available when reverse gear is engaged. Further information on the ECO start/stop function (Y page 276).

X When the vehicle is stationary, depress the

brake pedal.

X Push the DIRECT SELECT lever up past the

first point of resistance.

P Park position with parking lock R Reverse gear N Neutral D Drive

280 Automatic transmission

Neutral N with ECO start/stop function activated The ECO start/stop function switches the engine off automatically if: Rthe vehicle is braked until stationary while

in neutral N and

Ryou continue to apply the brakes. Further information on the ECO start/stop function (Y page 276).

Shifting to neutral N X When the vehicle is stationary, depress the

brake pedal.

X Push the DIRECT SELECT lever up or down

to the first point of resistance.

If the engine has been switched off, the automatic transmission automatically switches to N. Remaining in neutral N If the automatic transmission is to remain in neutral N, e.g. for washing the vehicle in car washes with a towing device, please observe the following instructions: G WARNING When leaving the SmartKey in the starter switch, do not leave children unattended in the vehicle. It is possible for children to switch on the ignition which could result in unsupervised use of vehicle equipment. Unsupervised use of vehicle equipment could result in an accident and/or serious personal injury.

Using the SmartKey: Rmake sure that the ignition is switched on. Rwhen the vehicle is stationary, depress the

brake pedal and keep it depressed.

Rshift to neutral N. Rrelease the brake pedal. Rif the electric parking brake is engaged,

release it.

Rswitch off the ignition and leave the

SmartKey in the ignition lock.

Using KEYLESS-GO: Rmake sure that the ignition is switched on. Rwhen the vehicle is stationary, depress the

brake pedal and keep it depressed.

Rengage park position P. Rrelease the brake pedal. Rremove the Start/Stop button from the

ignition lock.

Rinsert the SmartKey into the ignition lock. Rswitch on the ignition. Rdepress the brake pedal and keep it

depressed.

Rshift to neutral N. Rrelease the brake pedal. Rif the electric parking brake is engaged,

release it.

Rswitch off the ignition and leave the

SmartKey in the ignition lock.

Drive position D with ECO start/stop function activated The ECO start/stop function switches the engine off automatically if: Rthe vehicle is braked until stationary while

in transmission position D and

Ryou continue to apply the brakes. Further information on the ECO start/stop function (Y page 276).

Engaging drive position D X When the vehicle is stationary, depress the

brake pedal.

X Push the DIRECT SELECT lever down past

the first point of resistance.

Transmission position display The current transmission position is shown in the multifunction display.

: Transmission position i The arrows in the transmission position

display show how and into which transmission positions you can change using the DIRECT SELECT lever.

! If the transmission position display in the

multifunction display is not working, you should pull away carefully to check whether the desired transmission position is engaged. Ideally, you should select transmission position D and drive program E (drive program C on AMG vehicles) or S. Do not restrict the shift range.

Automatic transmission 281

Transmission positions B Park position

Do not shift the transmission into position P unless the vehicle is stationary. The parking lock should not be used as a brake when parking. In addition to engaging the parking lock, you must always apply the electric parking brake to secure the vehicle. If the vehicle electronics are malfunctioning, the transmission may be locked in position P. Have the vehicle electronics checked immediately at a qualified specialist workshop.

C Reverse gear

Only shift the transmission to R when the vehicle is stationary.

A Neutral

Do not shift the transmission to N while driving. The transmission could otherwise be damaged. No power is transmitted from the engine to the drive wheels. Releasing the brakes will allow you to move the vehicle freely, e.g. to push it or tow it. If ESP® is deactivated or faulty: only shift the transmission to position N if the vehicle is in danger of skidding, e.g. on icy roads. ! Rolling in neutral N can damage

the drive train.

7 Drive

The automatic transmission changes gear automatically. All forward gears are available.

282 Automatic transmission

Changing gear The automatic transmission shifts to the individual gears automatically when it is in transmission position D. This automatic gearshifting behavior is determined by: Ra shift range restriction, if selected Rthe selected drive program E/S or, for AMG vehicles, C/S/M(Y page 282)

Rthe position of the accelerator pedal Rthe road speed

could result in an accident and/or serious personal injury.

Program selector button General information The program selector button influences: Rthe drive program Rthe AIRMATIC (Y page 309) or ABC (Y page 310) suspension settings

Rthe engine management

Driving tips Kickdown Use kickdown for maximum acceleration. X All vehicles (except AMG vehicles):

depress the accelerator pedal beyond the point of resistance. The transmission shifts to a lower gear depending on the engine speed.

Rocking the vehicle free Rocking the vehicle free by shifting back and forth between transmission positions D and R can help to free a vehicle that has become stuck in mud or snow. The engine management system of the vehicle limits shifting back and forth between transmission positions D and R to a maximum speed of 5 mph (9 km/h). To shift back and forth between transmission positions D and R, move the selector lever up and down beyond the pressure point.

Working on the vehicle G WARNING When working on the vehicle, engage the electronic parking brake and shift the automatic transmission into park position P. Otherwise the vehicle could roll away which

Program selector button

Program selector button on AMG vehicles In AMG vehicles, drive program E is called drive program C. E Economy C Controlled Efficiency S Sport M Manual

Sporty driving style Manual gear shifting

Comfortable, economical driving

i For further information on the automatic

drive program, see (Y page 283).

AMG vehicles: only change from automatic drive program C or S to manual drive program M when the vehicle is stationary. X Press program selector button :

repeatedly until the letter for the desired gearshift program appears in the multifunction display.

i When the engine is started, the automatic transmission always switches to automatic drive program E (drive program C in AMG vehicles).

Steering wheel paddle shifters

: Left-hand steering wheel paddle shifter ; Right-hand steering wheel paddle shifter You can restrict or derestrict the shift range by using the steering wheel paddle shifters. You can change gear yourself by using the steering wheel paddle shifters in the manual drive program.

Automatic drive program Drive program E (drive program C on AMG vehicles) is characterized by the following:

Automatic transmission 283

Rthe vehicle pulling away more gently in forward and reverse gears, unless the accelerator pedal is depressed fully

Rincreased sensitivity. This improves driving

stability on slippery road surfaces, for example

Rthe automatic transmission shifting up sooner. This results in the vehicle being driven at lower engine speeds and the wheels being less likely to spin

Drive program S is characterized by the following: Rsporty engine settings Rthe vehicle pulling away in first gear Rthe automatic transmission shifting up

later

Rthe fuel consumption possibly being higher

as a result of the later automatic transmission shift points

Shift ranges Introduction When the automatic transmission is in position D, it is possible to restrict or derestrict the shift range (Y page 283). The shift range selected is shown in the multifunction display. The automatic transmission shifts only as far as the selected gear. Shift range = You can use the engine's braking

effect.

284 Automatic transmission

5 To use the braking effect of the

engine on downhill gradients and for driving: Ron steep mountain roads Rin mountainous terrain Rin arduous conditions

4 To use the braking effect of the

engine on extremely steep downhill gradients and on long downhill stretches

Restricting the shift range X Pull the left-hand steering wheel paddle

shifter. The automatic transmission shifts down one gear and restricts the shift range to the relevant gear.

i If the engine exceeds the maximum engine speed when shifting down, the automatic transmission protects against engine damage by not shifting down.

i If the maximum engine speed for the shift

range is reached and you continue to accelerate, the automatic transmission shifts up in order to prevent the engine from overrevving, even if the shift range is restricted.

Derestricting the shift range X Pull the right-hand steering wheel paddle

shifter. The shift range is derestricted.

Clearing the shift range restriction X Pull and hold the right-hand steering wheel paddle shifter until D is shown again in the multifunction display. The automatic transmission shifts from the current shift range directly to D.

Selecting the ideal shift range X Pull the left-hand steering wheel paddle

shifter and hold it in position. The automatic transmission shifts to the gear which allows optimum acceleration and deceleration. To do this, the automatic transmission shifts down one or more gears.

Manual drive program Switching on the manual drive program The manual drive program is only available for AMG vehicles. Manual drive program M is different from drive program S with regard to spontaneity, responsiveness and smoothness of gear changes. Manual drive program M can be selected using the program selector button. In manual drive program M, you can change gear using the steering wheel paddle shifters if the transmission is in position D. The gear currently selected and engaged is shown in the multifunction display. X Press the program selector button

(Y page 282) repeatedly until M appears in the multifunction display.

Upshifting ! In manual drive program M, the automatic

transmission does not shift up automatically even when the engine limiting speed for the current gear is reached. When the engine limiting speed is reached, the fuel supply is cut to prevent the engine from overrevving. Always make sure that the engine speed does not reach the red area of the tachometer. There is otherwise a risk of engine damage.

X Pull the right-hand steering wheel paddle

shifter (Y page 283). The automatic transmission shifts up to the next gear.

Automatic transmission 285

Before the engine speed reaches the red area, an upshift indicator appears in the multifunction display.

: Gear indicator ; Upshift indicator

Downshifting X Pull the left-hand steering wheel paddle

shifter (Y page 283). The automatic transmission shifts down to the next gear.

i If you brake the vehicle or stop without shifting down, the automatic transmission will shift down to a gear that will allow the vehicle to accelerate or pull away again. i For maximum acceleration, pull the left- hand steering wheel paddle shifter until the transmission selects the optimum gear for the current speed.

Kickdown i Kickdown is not possible in manual drive

program M.

Switching off the manual drive program X Press the program selector button (Y page 282) repeatedly until C or S appears in the multifunction display.

286 Refueling

Problems with the transmission Problem The transmission has problems shifting gear.

Possible causes/consequences and M Solutions The transmission is losing oil. X Have the transmission checked at a qualified specialist

workshop immediately.

The acceleration ability is deteriorating. The transmission no longer changes gear.

The transmission is in emergency mode. It is only possible to shift into second gear and reverse gear. X Stop the vehicle. X Shift the transmission to position P. X Switch off the engine. X Wait at least 10seconds before restarting the engine. X Shift the transmission to position D or R.

If D is selected, the transmission shifts into second gear; if R is selected, the transmission shifts into reverse gear.

X Have the transmission checked at a qualified specialist

workshop immediately.

Transfer case This section is only valid for vehicles with 4- wheel drive (4MATIC). Power is always transmitted to both axles. ! Performance tests may only be carried out on a 2-axle dynamometer. The brake system or transfer case could otherwise be damaged. Contact a qualified specialist workshop for a performance test.

! To prevent ESP® from intervening, the

ignition must be switched off (SmartKey or the Start/Stop button in position 0 or 1) if: Rthe electric parking brake is being tested

on a brake dynamometer.

Rthe vehicle is being towed with only one

axle raised (not permitted for vehicles with 4MATIC).

The brake system could otherwise be damaged.

! Vehicles with 4MATIC must not be towed with either the front or the rear axle raised, as doing so will damage the transmission.

Refueling Important safety notes G WARNING Gasoline is highly flammable and poisonous. It burns violently and can cause serious personal injury. Never allow sparks, flames or smoking materials near gasoline. Turn off the engine before refueling. Whenever you are around gasoline, avoid inhaling fumes and any skin or clothing contact. Direct skin contact with fuels and the inhalation of fuel vapors are damaging to your health. G WARNING Overfilling of the fuel tank may create pressure in the system which could cause a gas discharge. This could cause the gasoline to spray back out when removing the fuel pump nozzle, which could cause personal injury.

Refueling 287

! Do not use diesel to refuel vehicles with a gasoline engine. Even small amounts of the wrong fuel result in damage to the fuel system and engine.

! Do not switch on the ignition if you

accidentally refuel with the wrong fuel. Otherwise, the fuel will enter the fuel lines. Notify a qualified specialist workshop and have the fuel tank and fuel lines drained completely.

! Overfilling the fuel tank could damage the

fuel system.

! Take care not to spill any fuel on painted surfaces. You could otherwise damage the paintwork.

! Use a filter when refueling from a fuel can. Otherwise, the fuel lines and/or injection system could be blocked by particles from the fuel can.

Further information on fuel and on fuel grades can be found in the "Fuel" section (Y page 484).

vehicle with the SmartKey or with KEYLESS- GO. The position of the fuel filler cap 8 is displayed in the instrument cluster. The arrow next to the filling pump indicates the side of the vehicle.

Opening X Switch off the engine. X Remove the SmartKey from the ignition

lock.

X KEYLESS-GO: open the driver’s door.

This corresponds to SmartKey position 0: "SmartKey removed". The driver’s door can be closed again.

X Press the fuel filler flap in the direction of

arrow :. The fuel filler flap opens slightly.

X Open the fuel filler flap fully. X Turn the fuel filler flap counter-clockwise

and remove it.

X Insert the fuel filler cap into the holder bracket on the inside of filler flap ;.

Refueling Fuel filler flap

: To open the fuel filler flap ; To insert the fuel filler cap = Tire pressure table ? Fuel type The fuel filler flap is unlocked or locked automatically when you open or close the

X Completely insert the filler neck of the fuel

pump nozzle into the tank and refuel. X Only fill the tank until the pump nozzle

switches off.

i Do not add any more fuel after the pump

stops filling for the first time. Otherwise, fuel may leak out.

Closing X Replace the cap on the filler neck and turn

clockwise until it engages audibly.

X Close the fuel filler flap. i If you drive with the fuel filler cap open, the reserve fuel warning lamp flashes. In addition, the ; Check Engine warning lamp may light up. A message appears in the multifunction display (Y page 374). For further information on warning and indicator lamps in the instrument cluster, see (Y page 396).

288 Refueling

i Close the fuel filler flap before locking the vehicle. Otherwise, the locking pin of the central locking prevents the fuel filler flap from closing.

Parking 289

Problems with fuel and the fuel tank Problem Fuel is leaking from the vehicle.

The fuel filler flap cannot be opened.

Possible causes/consequences and M Solutions G Risk of explosion or fire The fuel line or the fuel tank is faulty. X Turn the SmartKey to position 0 in the ignition lock and remove

it immediately (Y page 273).

X Do not restart the engine under any circumstances. X Consult a qualified specialist workshop. The fuel filler flap is not unlocked. or The SmartKey battery is discharged. X Unlock the vehicle . or X Unlock the vehicle using the mechanical key (Y page 77). The fuel filler flap is unlocked, but the opening mechanism is jammed. X Consult a qualified specialist workshop.

Parking Important safety notes G WARNING Do not park this vehicle in areas where combustible materials can come into contact with the hot exhaust system. Combustible materials, such as grass, hay or leaves could be ignited by the hot exhaust system and cause a vehicle fire. Do not park the vehicle on dry grassland or harvested grain fields. Unintended vehicle movement can cause serious personal injury or damage to the vehicle or the vehicle drivetrain. To reduce such risks, always do the following before turning off the engine and leaving the vehicle: Rkeep your right foot on the brake pedal. Rengage the electric parking brake. Rshift the automatic transmission into park

position P.

Rslowly release the brake pedal.

Rwhen parked on an incline, always turn the

front wheels towards the road curb.

Rturn the SmartKey in the ignition lock to

position 0 and remove the SmartKey from the ignition lock, or press the KEYLESS-GO Start/Stop button.

Rtake the SmartKey with you and lock the

vehicle when leaving.

Switching off the engine Important safety notes G WARNING Do not turn off the engine before the vehicle has come to a complete stop. With the engine not running, there is no power assistance for the brake and steering systems. In this case, it is important to keep in mind that a considerably higher degree of effort is necessary to brake and steer the vehicle.

290 Parking

pressing and holding the Start/Stop button for 3 seconds. This function operates independently from the ECO start/stop automatic engine switch-off function.

Electric parking brake General notes G WARNING When leaving the vehicle, always remove the SmartKey from the starter switch, take it 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 and/or shift the automatic transmission out of park position P, either of which could result in an accident and/or serious personal injury.

G WARNING Keep in mind that turning off the engine alone only will shift the automatic transmission into neutral position N automatically. Always shift the automatic transmission into park position P before turning off the engine. Otherwise the vehicle could roll away which could result in an accident and/or serious personal injury.

i If you cannot turn off the engine as

described here, see "Engine emergency stop" (Y page 451).

Vehicles with automatic transmission X Apply the electric parking brake. X Shift the transmission to position P. Using the SmartKey X Turn the SmartKey to position 0 in the

ignition lock and remove it. The immobilizer is activated.

i If you turn off the engine with the

SmartKey and then remove it from the ignition lock or open a front door, the automatic transmission shifts to P automatically.

Using KEYLESS-GO X Press the Start/Stop button (Y page 273).

The engine stops and all the indicator lamps in the instrument cluster go out. i When the driver's door is closed, this

corresponds to SmartKey position 1. When the driver's door is open, it corresponds to SmartKey position 0 or "SmartKey removed".

i If you use the Start/Stop button to switch off the engine, the automatic transmission shifts to N automatically. If you then open the driver's or front-passenger door, the automatic transmission shifts to P.

i In an emergency, the engine can be

turned off while the vehicle is in motion by

Applying/releasing manually X To engage: push handle :.

When the electric parking brake is engaged, the F (USA only) or ! (Canada only) red indicator lamp lights up in the instrument cluster.

i The electric parking brake can also be applied when the SmartKey is removed.

X To release: switch on the ignition. X Pull handle :.

The red F (USA only) or ! (Canada only) indicator lamp in the instrument cluster goes out.

i The electric parking brake can only be

released: Rif the SmartKey is in position 1 in the

ignition lock or

Rif the ignition was switched on using the

Start/Stop button.

Engaging the electric parking brake automatically If the HOLD function or DISTRONIC PLUS brake the vehicle until it is stationary, the electric parking brake is automatically applied. Additionally, at least one of the following conditions must be fulfilled: Rthe engine is switched off. Rthe driver's door is open and the seat belt

is not fastened.

Rthe hood is released. Rthe trunk lid is opened while the automatic

transmission is in position R.

Rthe vehicle is stationary for a lengthy

period.

The red F (USA only) or ! (Canada only) indicator lamp in the instrument cluster lights up. i In addition to the electric parking brake,

P may also be engaged automatically.

Releasing the electric parking brake automatically The electric parking brake is released automatically when the following conditions are simultaneously fulfilled: Rthe engine is running. Rthe automatic transmission is in position

D or R.

Rthe hood is closed. Ryour seat belt is fastened. Ryou accelerate. If the automatic transmission is in position R, the trunk lid must be closed.

Parking 291

If your seat belt is not fastened, the following conditions must be fulfilled to automatically release the electric parking brake: Rthe driver's door is closed. Ryou have shifted out of P or you have previously driven faster than 3 km/h. Ryou have shifted out of P or you have previously driven faster than 2 mph (3 km/h).

Emergency braking The vehicle can also be braked during an emergency by using the electric parking brake. X While driving, push handle : of the electric

parking brake (Y page 290).

i The vehicle is braked as long as you keep

the handle of the electric parking brake pressed. The longer the electric parking brake handle is depressed, the greater the braking force. During braking: Ra warning tone sounds. Rthe Please Release Parking Brake message appears

Rthe red F (USA only) or ! (Canada

only) indicator lamp in the instrument cluster appears.

When the vehicle has been braked to a standstill, the electric parking brake is engaged.

Parking the vehicle for a long period If you leave the vehicle parked for longer than four weeks, the battery may be damaged by exhaustive discharging. X Connecting a trickle charger. i You can obtain information about trickle

chargers from a qualified specialist workshop.

292 Driving tips

If you leave the vehicle parked for longer than six weeks, the vehicle may suffer damage as a result of lack of use. X Visit a qualified specialist workshop and

seek advice.

Driving tips General driving tips Important safety notes G WARNING Always remember that you must concentrate primarily on driving the vehicle. The driver's concentration must always be directed primarily at road traffic. For your own safety and that of others, we recommend that you stop the vehicle at a safe place and in accordance with the traffic conditions before making or accepting a phone call. Comply with all legal requirements if you use the telephone while driving. Use the hands- free system and only use the telephone when road, weather and traffic conditions permit. In some jurisdictions, it is forbidden for drivers to use mobile phones while driving. Only operate COMAND (Cockpit Management and Data System) in compliance with all legal requirements and when the road, weather and traffic conditions permit. You may otherwise not be able to observe the traffic conditions, endangering yourself and others. Remember that your vehicle covers a distance of 44 ft (approximately 14 m) a second when it is traveling at only 30 mph (approximately 50 km/h).

Drive sensibly – save fuel Observe the following tips to save fuel: X The tires should always be inflated to the

recommended tire pressure. X Remove unnecessary loads. X Remove roof racks when they are not

needed.

X Warm up the engine at low engine speeds. X Avoid frequent acceleration or braking. X Have all maintenance work carried out as

indicated by the service intervals in the Maintenance Booklet or by the service interval display.

Fuel consumption also increases when driving in cold weather, in stop-and-go traffic and in mountainous terrain.

Drinking and driving G WARNING Drinking and driving and/or taking drugs and driving are very dangerous combinations. Even a small amount of alcohol or drugs can affect your reflexes, perceptions and judgment. The possibility of a serious or even fatal accident are greatly increased when you drink or take drugs and drive. Do not drink or take drugs and drive or allow anyone to drive who has been drinking or taking drugs.

Pedals G WARNING Make sure absolutely no objects are obstructing the pedals' range of movement. Keep the driver's footwell clear of all obstacles. If there are any floormats or carpets in the footwell, make sure that the pedals still have sufficient clearance. During sudden driving or braking maneuvers, the objects could get caught between the pedals. You could then no longer brake or accelerate. This could lead to accidents and injury.

Rolling with the engine switched off G WARNING There is no power assistance for the steering and the brake when the engine is not running.

Driving tips

293

Steering and braking requires significantly more effort and you could lose control of the vehicle and cause an accident as a result. Do not turn off the engine while the vehicle is in motion.

Exhaust check G WARNING Inhalation of exhaust gas is hazardous to your health. All exhaust gas contains carbon monoxide (CO), and inhaling it can cause unconsciousness and possible death. Do not run the engine in confined areas (such as a garage) which are not properly ventilated. If you think that exhaust gas fumes are entering the vehicle while driving, have the cause determined and corrected immediately. If you must drive under these conditions, drive only with at least one window fully open at all times.

Certain engine systems are designed to keep the level of poisonous components in exhaust fumes within legal limits. These systems only work at peak efficiency if they are serviced exactly in accordance with the manufacturer's specifications. For this reason, all work on the engine should only be carried out by qualified and authorized Mercedes-Benz technicians. The engine settings must not be changed under any circumstances. Furthermore, all specific service work must be carried out at regular intervals and in accordance with the Mercedes-Benz service requirements. Details can be found in the Maintenance Booklet.

Braking Important safety notes G 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. G WARNING Make sure that you do not endanger other road users when you apply the brakes.

Downhill gradients ! On long and steep gradients, you must reduce the load on the brakes by shifting early to a lower gear. This allows you to take advantage of the engine braking effect and helps avoid overheating and excessive wear of the brakes. When you take advantage of the engine braking effect, a drive wheel may not turn for some time, e.g. on a slippery road surface. This could cause damage to the drive train. This type of damage is not covered by the Mercedes-Benz warranty.

Heavy and light loads G WARNING Depressing the brake pedal constantly results in excessive and premature wear to the brake pads. It may also cause the brakes to overheat, seriously impairing their effectiveness. It may then not be possible to stop the vehicle in sufficient time to avoid an accident.

If the brakes have been subjected to a heavy load, do not stop the vehicle immediately, but drive on for a short while. This allows the airflow to cool the brakes more quickly.

Wet roads G 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. You have to depress the brake pedal

294 Driving tips

more firmly. Maintain a safe distance from vehicles in front.

After driving on a wet road or having the vehicle washed, brake firmly while paying attention to the traffic conditions. This will warm up the brake discs, thereby drying them more quickly and protecting them against corrosion.

Limited braking performance on salt- treated roads G WARNING The layer of salt on the brake discs and the brake pads/linings may cause a delay in the braking effect, resulting in a significantly longer braking distance, which could lead to an accident. To avoid this danger, you should: Roccasionally brake carefully, without

putting other road users at risk, when you are driving on salted roads. This helps to remove any salt that may have started to build up on the brake discs and the brake pads/linings.

Rmaintain a greater distance to the vehicle

ahead and drive with particular care.

Rcarefully apply the brakes at the end of a trip and immediately after commencing a new trip, so that salt residues are removed from the brake discs.

Servicing the brakes ! If the red brake warning lamp lights up in

the instrument cluster and you hear a warning tone while the engine is running, the brake fluid level may be too low. Observe additional warning messages in the multifunction display. The brake fluid level may be too low due to brake pad wear or leaking brake lines. Have the brake system checked immediately. This work should be carried out at a qualified specialist workshop.

All checks and maintenance work on the brake system must be carried out at a qualified specialist workshop. Consult a qualified specialist workshop to arrange this. Have brake pads installed and brake fluid replaced at a qualified specialist workshop. G WARNING If brake pads or brake fluid other than those recommended are 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.

! Vehicles with 4MATIC: function or

performance tests may only be carried out on a 2-axle dynamometer. If you are planning to have the vehicle tested on such a dynamometer, contact an authorized Mercedes-Benz Center to obtain further information first. Otherwise, you could damage the drive train or the brake system.

! Vehicles with 4MATIC: as the ESP®

system operates automatically, the engine and the ignition must be switched off (SmartKey in position 0 or 1 in the ignition lock or Start/Stop button in position 0 or 1) when the electric parking brake is being tested on a brake dynamometer. Braking maneuvers triggered automatically by ESP® may seriously damage the brake system.

! Vehicles with 4MATIC: as the ESP®

system operates automatically, the engine and the ignition system must be switched off (SmartKey in position 0 or 1 in the ignition lock or Start/Stop button in position 0 or 1) when: Rtesting the electric parking brake on a

brake dynamometer.

Ryou intend to have the vehicle towed with

one of the axles raised.

Braking maneuvers triggered automatically by ESP® may seriously damage the brake system.

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If the brake system has only been subject to moderate loads, you should test the functionality of your brakes at regular intervals. To do so, press firmly on the brake pedal when driving at a high speed. This improves the grip of the brake pads. G WARNING Make sure that you do not endanger other road users when you apply the brakes.

The wear of individual components of the brake system, such as the brake pads/linings or brake discs, depends on the individual driving style and operating conditions. For this reason, it is impossible to state a mileage that will be valid under all circumstances. An aggressive driving style will lead to high wear. You can obtain further information about this from your authorized Mercedes-Benz Center.

You can find a description of Brake Assist (BAS) on (Y page 65) or of BAS PLUS on (Y page 66).

High-performance brake system for AMG vehicles The high-performance brake system is installed only on the CL 63 AMG and CL 65 AMG. G WARNING New vehicle brake pads and discs, and replacement brake pads and discs may take several hundred miles of driving until they provide optimum braking efficiency. Until that time, you may need to use increased brake pedal pressure while braking. Please be aware of this and adjust your driving and braking accordingly during this break-in period. Excessive high-demand braking will cause correspondingly high brake wear. Please be attentive to the brake warning lamp in the instrument cluster and brake condition messages in the multifunction display. Especially for high performance driving, it is important to maintain and have the brake system checked regularly.

The high-performance brake system is designed for heavy loads. This may lead to noise when braking. This will depend on: Rspeed Rbraking force Renvironmental conditions, such as

temperature and humidity

Driving on wet roads Hydroplaning If water has accumulated to a certain depth on the road surface, there is a danger of hydroplaning occurring, even if: Ryou drive at low speeds. Rthe tires have adequate tread depth. For this reason, in the event of heavy rain or in conditions in which hydroplaning can occur, you must drive in the following manner: Rlower your speed. Ravoid ruts. Rbrake carefully.

Driving on flooded roads ! Do not drive through flooded areas.

Check the depth of any water before driving through it. Drive slowly through standing water. Otherwise, water may enter the vehicle interior or the engine compartment. This can damage the electronic components in the engine or the automatic transmission. Water can also be drawn in by the engine's air suction nozzles and this can cause engine damage.

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Winter driving Important safety notes G WARNING If the vehicle becomes trapped in snow, ensure that snow is kept away from the exhaust pipe and from around the vehicle as long as the engine is running. Otherwise, poisonous carbon monoxide (CO) may enter the vehicle, resulting in loss of consciousness and even death. To assure sufficient fresh air ventilation, open a window slightly on the side of the vehicle not facing the wind.

Have your vehicle winterproofed at a qualified specialist workshop at the onset of winter. Observe the notes in the "Winter operation" section (Y page 456).

Driving with summer tires Observe the notes in the "Winter operation" section (Y page 456).

Slippery road surfaces G WARNING The outside temperature indicator is not designed to serve as an ice-warning device and is therefore unsuitable for that purpose. Indicated temperatures just above the freezing point do not guarantee that the road surface is free of ice. The road may still be icy, especially in wooded areas or on bridges. G 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.

Drive particularly carefully on slippery road surfaces. Avoid sudden acceleration, steering and braking maneuvers. Do not use the cruise control or DISTRONIC PLUS.

If the vehicle threatens to skid or cannot be stopped when moving at low speed: X Shift the transmission to position N. i For more information on driving with

snow chains, see (Y page 457). G WARNING Make sure that you do not endanger other road users when you apply the brakes.

Driving systems Cruise control Important safety notes Cruise control maintains a constant road speed for you. It brakes automatically in order to avoid exceeding the set speed. On long and steep downhill gradients, especially if the vehicle is laden, you must select shift range 1, 2 or 3 in good time. By doing so, you will make use of the braking effect of the engine, which relieves the load on the brake system and prevents the brakes from overheating and wearing too quickly. Use cruise control only if road and traffic conditions make it appropriate to maintain a steady speed for a prolonged period. You can store any road speed above 20 mph (30 km/h). G WARNING The cruise control is a convenience system designed to assist the driver during vehicle operation. The driver is and must always remain responsible for the vehicle's speed and for safe brake operation. Only use the cruise control if the road, traffic, and weather conditions make it advisable to travel at a constant speed. RThe use of the cruise control can be

dangerous on winding roads or in heavy

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traffic because conditions do not allow safe driving at a constant speed.

RThe use of the cruise control can be dangerous on slippery roads. Rapid changes in tire traction can result in wheel spin and loss of control.

RDeactivate the cruise control when driving

in fog.

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.

Cruise control lever

: To activate or increase speed ; To activate or reduce speed = To deactivate cruise control ? To activate at the current speed/last

stored speed

When you activate cruise control, the stored speed is shown in the multifunction display for five seconds. A triangle is also shown in the speedometer. The speedometer dial lights up between the set speed and the maximum speed.

Storing and maintaining the current speed You can store the current speed if you are driving faster than 20 mph (30 km/h).

X Accelerate the vehicle to the desired

speed.

X Briefly press the cruise control lever

up : or down ;.

X Remove your foot from the accelerator

pedal. Cruise control is activated. The vehicle automatically maintains the stored speed. i Cruise control may be unable to maintain the stored speed on uphill gradients. The stored speed is resumed when the gradient evens out. Cruise control maintains the stored speed on downhill gradients by automatically applying the brakes.

Storing the current speed or calling up the last stored speed G WARNING The set speed stored in memory should only be set again if prevailing road conditions and legal speed limits permit. Possible acceleration or deceleration differences arising from returning to the preset speed could cause an accident and/or serious injury to you and others.

X Briefly pull the cruise control lever towards

you ?.

X Remove your foot from the accelerator

pedal. The first time cruise control is activated, it stores the current speed or regulates the speed of the vehicle to the previously stored speed.

Setting a speed G WARNING Keep in mind that it may take a brief moment until the vehicle has made the necessary adjustments. Increase or decrease the set vehicle speed to a value that the prevailing road conditions and legal speed limits permit. Otherwise, sudden and unexpected acceleration or deceleration

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of the vehicle could cause an accident and/ or serious injury to you and others.

X Press the cruise control lever up : for a higher speed or down ; for a lower speed.

X To adjust the speed in 1 mph

increments (1 km/h increments): briefly press the cruise control lever up : or down ; to the pressure point. The last speed stored is increased or decreased every time the cruise control lever is pushed up : or down ;.

X To adjust the speed in 5 mph

increments (10 km/h increments): briefly press the cruise control lever up : or down ; beyond the pressure point. The last speed stored is increased or decreased every time the cruise control lever is pushed up : or down ;.

i Cruise control is not deactivated if you

depress the accelerator pedal. For example, if you accelerate briefly to overtake, cruise control adjusts the vehicle's speed to the last speed stored after you have finished overtaking.

Deactivating cruise control There are several ways to deactivate cruise control: X Briefly press the cruise control lever

forwards =.

or X Brake. Cruise control is automatically deactivated if: Ryou engage the electric parking brake. Ryou are driving at less than 20 mph

(30 km/h)

RESP® intervenes or you deactivate ESP®. Ryou shift the transmission to position N

while driving. If cruise control is deactivated, you will hear a warning tone. You will see the Cruise

Control Off message in the multifunction display for approximately five seconds. i When you switch off the engine, the last

speed stored is cleared.

DISTRONIC PLUS Important safety notes DISTRONIC PLUS regulates the speed and automatically helps you maintain the distance to the vehicle detected in front. DISTRONIC PLUS brakes automatically so that the set speed is not exceeded. On long and steep downhill gradients, especially if the vehicle is laden, you must select shift range 1, 2 or 3 in good time. By doing so, you will make use of the braking effect of the engine. This relieves the load on the brake system and prevents the brakes from overheating and wearing too quickly. If DISTRONIC PLUS detects a slower-moving vehicle in front, your vehicle is braked in order to maintain the preset distance to the vehicle in front. G WARNING The DISTRONIC PLUS requires familiarity with its operational characteristics. We strongly recommend that you review the following information carefully before operating the system. G WARNING When DISTRONIC brakes, the brake pedal is pulled back (i.e. operated automatically). The area around the pedal must not be blocked by obstacles: Rdo not place any objects in the footwell. Rensure that floormats and carpets are fixed securely. In particular, do not place several floormats on top of one another.

Rdo not place your foot under the brake

pedal, as it could become trapped.

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Non-compliance could lead you to cause an accident in which you and/or others could be seriously injured. G WARNING The DISTRONIC PLUS 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's speed, distance to the preceding vehicle and, most importantly, brake operation to ensure a safe stopping distance, always remains with the driver. The DISTRONIC PLUS cannot take street and traffic conditions into account. Complex driving situations are not always fully recognized by the DISTRONIC PLUS. This could result in wrong or missing distance warnings.

For DISTRONIC PLUS to assist you, the radar sensor system must be operational. If there is no vehicle in front, DISTRONIC PLUS operates in the same way as cruise control in the speed range between 20 mph (Canada: 30 km/h) and 120 mph (Canada: 200 km/h). If a vehicle is driving in front of you, it operates in the speed range between 0 mph (0 km/h) and 120 mph (Canada: 200 km/h). Do not use DISTRONIC PLUS while driving on roads with steep gradients. As DISTRONIC PLUS transmits radar waves, it can resemble the radar detectors of the responsible authorities. You can refer to the relevant chapter in the Operator's Manual if questions are asked about this. i USA only:

This device has been approved by the FCC as a "Vehicular Radar System". The radar sensor is intended for use in an automotive radar system only. Removing, tampering with, or altering the device will void any

warranties, and is not permitted by the FCC. Do not tamper with, alter, or use in any non-approved way. Any unauthorized modification to this device could void the user’s authority to operate the equipment.

i Canada only: This device complies with RSS-210 of Industry Canada. 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 of the device. Removal, tampering, or altering of the device will void any warranties, and is not permitted. Do not tamper with, alter, or use in any non-approved way. Any unauthorized modification to this device could void the user's authority to operate the equipment. G WARNING DISTRONIC PLUS distance is not a substitute for the active intervention of the driver. It does not detect pedestrians or stationary objects, nor can it detect, recognize or predict the road's course or the movements of vehicles in front. DISTRONIC PLUS can only brake the vehicle using 40% of the vehicle's maximum available brake force. DISTRONIC PLUS may not detect narrow vehicles driving in front, e.g. motorcycles, or vehicles driving in the lane beyond the lane next to your vehicle, especially if the vehicles are not driving on the middle of their lane. The driver must always pay careful attention to the road, weather and traffic conditions. The driver must drive, steer and brake in a manner which will allow him to always have control of the vehicle. Sources of high-frequency radio waves, such as toll stations, speed-measuring radar, etc., can cause DISTRONIC PLUS to fail temporarily.

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G WARNING The DISTRONIC PLUS cannot take road and