2012 Mercedes-benz CL Class Owners Manual

X Turn the light switch to L. If the light

switch is set to T, you cannot switch on the rear fog lamp.

X Pull the light switch out to the second

detent. The yellow R indicator lamp on the light switch lights up.

X To switch off the rear fog lamp: press the

light switch in as far as it will go. The yellow R indicator lamp on the light switch goes out.

Headlamp cleaning system The headlamps are cleaned automatically if the "Wipe with washer fluid" function is operated ten times while the lights are on and the engine is running (Y page 251). When you switch off the ignition, the automatic headlamp cleaning system is reset and counting is resumed from 0.

Combination switch Turn signals

: High-beam headlamps ; Right turn signal

Exterior lighting 247

Hazard warning lamps

= High-beam flasher ? Left turn signal X To indicate briefly: press the combination switch briefly to the pressure point in the direction of arrow ; or ?. The corresponding turn signal flashes three times.

X To indicate: press the combination switch beyond the pressure point in the direction of arrow ; or ?.

High-beam headlamps X To switch on the high-beam headlamps:

turn the SmartKey in the ignition lock to position 2 or start the engine. X Turn the light switch to L. X Press the combination switch beyond the

pressure point in the direction of arrow :. The K indicator lamp in the instrument cluster lights up.

X To switch off the high-beam

headlamps: move the combination switch back to its normal position. The K indicator lamp in the instrument cluster goes out.

High-beam flasher X To switch on: turn the SmartKey in the

ignition lock to position 1 or 2 or start the engine.

X Pull the combination switch in the direction

of arrow =.

The hazard warning lamps automatically switch on if: Ran air bag is deployed. Rthe vehicle is slowed down severely from a speed of over 45 mph(70 km/h) and comes to a halt.

X To switch on the hazard warning lamps:

press button :. All turn signals flash. If you now switch on a turn signal using the combination switch, only the turn signal lamp on the corresponding side of the vehicle will flash.

X To switch off the hazard warning

lamps: press button :.

The hazard warning lamps are deactivated automatically if the vehicle returns to a speed of over 6 mph(10 km/h) after a full application of the brakes. i The hazard warning lamps still operate if

the ignition is switched off.

248 Exterior lighting

Cornering light function

The system automatically adapts the low- beam headlamp range depending on the distance to the other vehicle. Once the system no longer detects any other vehicles, it reactivates the high-beam headlamps. The system's optical sensor is located behind the windshield near the overhead control panel.

The cornering light function improves the illumination of the road over a wide angle in the direction you are turning, enabling better visibility in tight bends, for example. It can only be activated when the low-beam headlamps are switched on. Active: Rif you are driving at speeds below

25 mph (40 km/h) and switch on the turn signals or turn the steering wheel.

Rif you are driving at speeds between

25 mph (40 km/h) and 45 mph (70 km/h) or turn the steering wheel.

Not active: if you are driving at speeds above 25 mph (40 km/h) or switch off the turn signal or turn the steering wheel to the straight-ahead position. The cornering light function may remain lit for a short time, but is automatically switched off after no more than three minutes.

Adaptive Highbeam Assist You can use this function to set the headlamps to change between low beam and high beam automatically. The system recognizes vehicles with their lights on, either approaching from the opposite direction or traveling in front of your vehicle, and consequently switches the headlamps from high beam to low beam.

X To activate: activate the Adaptive

Highbeam Assist function using the on- board computer (Y page 344). X Turn the light switch to c. X Press the combination switch beyond the pressure point in the direction of arrow : (Y page 246). If it is dark and the light sensor activates the low-beam headlamps, the _ indicator lamp in the instrument cluster lights up. If you drive faster than approximately 28 mph (45 km/h): the headlamp range is set automatically depending on the distance between the vehicle and other road users. If you drive faster than approximately 35 mph (55 km/h) and no other road users are identified:

the high-beam headlamps are switched on automatically. The K indicator lamp in the instrument cluster also lights up. When you drive slower than approximately 30 mph (45 km/h) or if other road users are identified or if the roads are sufficiently illuminated: the high-beam headlamps are switched off automatically. The K indicator lamp in the instrument cluster goes out. The _ indicator lamp in the instrument cluster stays on.

X To deactivate: move the combination

switch back to its normal position. The _ indicator lamp in the instrument cluster goes out. G WARNING The Adaptive Highbeam Assist is only an aid intended to support you while driving. The driver is and remains responsible for proper vehicle lighting in accordance with the prevailing light, sight and traffic conditions. The system may be impaired or unavailable when Rvisibility is poor, e.g. due to snow, rain, fog,

or heavy spray

Rthe optical sensor area of the windshield is dirty, fogged up, or covered by a sticker for example

The system cannot recognize the following road users: RRoad users without a lighting system of

their own, e.g. pedestrians

RRoad users with dim lighting of their own,

e.g. cyclists

RRoad users whose lighting is obstructed,

e.g. road users behind a guardrail

RIn some seldom cases, even road users with

a lighting system of their own may be recognized too late or not at all.

The automatic high-beam headlamps will then not be deactivated or it will be activated in spite of preceding or oncoming road users.

Interior lighting 249

This could endanger you and/or others and cause an accident. Always pay close attention to the traffic situation and switch off the high beam manually if necessary.

Headlamps fogged up on the inside The headlamps may fog up on the inside if there is high atmospheric humidity. X Drive with the headlamps switched on.

The level of moisture diminishes, depending on the length of the journey and the weather conditions (humidity and temperature).

If the level of moisture does not diminish: X Have the headlamps checked at a qualified

specialist workshop.

Interior lighting Overview of interior lighting

Overhead control panel : p Switches the left-hand reading lamp

on/off

; v Switches the rear interior lighting

on/off

= c Switches the front interior lighting

on/off

? | Switches the automatic interior

lighting control on/off

A p Switches the right-hand reading

lamp on/off

250 Replacing bulbs

Interior lighting control Important notes In order to prevent the vehicle's battery from discharging, the interior lighting functions are automatically deactivated after some time except for when the SmartKey is in position 2 in the ignition lock.

Automatic interior lighting control X To switch on/off: press the | button. The OFF indicator lamp shows whether the automatic interior lighting control is deactivated (indicator lamp on) or activated (indicator lamp off).

The interior lighting automatically switches on if you: Runlock the vehicle Ropen a door Rremove the SmartKey from the ignition lock The interior light is activated for a short while when the SmartKey is removed from the ignition lock. You can activate this delayed switch-off using COMAND (Y page 233).

Manual interior lighting control X To switch the front interior lighting on/

off: press the c button.

X To switch the rear interior lighting on/

off: press the u button.

X To switch the reading lamps on/off:

press the p button.

Replacing bulbs Important safety notes Xenon bulbs If your vehicle is equipped with Xenon bulbs, you can recognize this by the following: the cone of light from the Xenon bulbs moves from the top to the bottom and back again when you start the engine. For this to be

observed, the lights must be switched on before starting the engine. G DANGER Xenon bulbs carry a high voltage. You could get an electric shock and be seriously or even fatally injured if you touch the electric contacts on Xenon bulbs. Therefore, never remove the cover from Xenon bulbs. Do not change Xenon bulbs yourself, but have them replaced at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use an authorized Mercedes-Benz Center for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.

Bulbs and lamps are an important aspect of vehicle safety. You must therefore make sure that these function correctly at all times. Have the headlamp setting checked regularly.

Other bulbs There are bulbs other than the Xenon bulbs that you cannot replace. Replace only the bulbs listed (Y page 251). Have the bulbs that you cannot replace yourself changed at a qualified specialist workshop. Mercedes-Benz recommends that you use an authorized Mercedes-Benz Center for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop. If you require assistance changing bulbs, consult a qualified specialist workshop. Do not touch the glass tube of new bulbs with your bare hands. Even minor contamination can burn into the glass surface and reduce the service life of the bulbs. Always use a lint- free cloth or only touch the base of the bulb when installing. Only use bulbs of the correct type.

If the new bulb still does not light up, consult a qualified specialist workshop. Bulbs and lamps are an important aspect of vehicle safety. You must therefore make sure that these function correctly at all times. Have the headlamp setting checked regularly. G WARNING Bulbs and lamps can be very hot. You should therefore allow them to cool down before you change them. Otherwise, you could be burned if you touch them. Keep bulbs out of the reach of children. Otherwise, they could damage the bulbs, for example, and injure themselves. Never use a bulb which has been dropped. Such a bulb may break or even explode and injure you. Halogen bulbs are pressurized and can explode when you change them, particularly if they are very hot. You should therefore wear eye protection and gloves when you are changing them.

Overview: changing bulbs/bulb types You can change the following bulbs. The bulb type can be found in the legend.

Bi-Xenon headlamps : High-beam spot lamp: H11 55 W

Infrared light (Night View Assist Plus): H11 55 W

Windshield wipers

251

Changing the front bulbs Headlamp spotlamp/infrared light (Night View Assist Plus)

X Switch off the lights. X Open the hood. X Turn housing cover ; counter-clockwise

and pull it out.

X Turn bulb holder : counter-clockwise and

pull it out.

X Take the bulb out of bulb holder :. X Insert the new bulb into bulb holder :. X Insert bulb holder :. X Turn bulb holder : clockwise. X Align housing cover ; and turn it

clockwise until it engages.

Windshield wipers Switching the windshield wipers on/ off G WARNING Wiper blades are components that are subject to wear and tear. Replace the wiper blades twice a year, preferably in the spring and fall. Otherwise the windshield will not be wiped properly. As a result, you may not be able to observe surrounding traffic conditions and could cause an accident.

! Do not operate the windshield wipers when the windshield is dry, as this could damage the wiper blades. Moreover, dust

252 Windshield wipers

that has collected on the windshield can scratch the glass if wiping takes place when the windshield is dry.

! If the windshield wipers leave smears on the windshield after the vehicle has been washed in an automatic car wash, wax or other residues may be the reason for this. Clean the windshield using washer fluid after washing the vehicle in an automatic car wash.

Combination switch 1 $ Windshield wipers off 2 Ä Intermittent wipe, low11
3 Å Intermittent wipe, high12
4 ° Continuous wipe, slow 5 ¯ Continuous wipe, fast B í Single wipe/ î To wipe the

windshield using washer fluid

X Switch on the ignition. X Turn the combination switch to the

corresponding position.

! Intermittent wiping with rain sensor: due

to optical influences and the windshield becoming dirty in dry weather conditions, the windshield wipers may be activated inadvertently. This could then damage the windshield wiper blades or scratch the windshield. For this reason, you should always switch off the windshield wipers in dry weather.

11 Rain sensor set to low sensitivity. 12 Rain sensor set to high sensitivity.

In the Ä or Å position, the appropriate wiping frequency is set automatically according to the intensity of the rain. In the Å position, the rain sensor is more sensitive than in the Ä position, causing the windshield wipers to wipe more frequently.

Replacing the wiper blades Important safety notes G WARNING For safety reasons, switch off the windshield wipers and remove the key from the ignition lock before changing the wiper blades (vehicles with KEYLESS-GO: make sure that the on-board electronics are in state 0). Otherwise, the wiper motor could be switched on suddenly and cause injury.

! To avoid damaging the wiper blades,

make sure that you touch only the wiper arm of the wiper.

! Never open the hood if a windshield wiper

arm has been folded away from the windshield. Never fold a windshield wiper arm without a wiper blade back onto the windshield. Hold the windshield wiper arm firmly when you change the wiper blade. If you release the windshield wiper arm without a wiper blade and it falls onto the windshield, the windshield may be damaged by the force of the impact. Mercedes-Benz recommends that you have the wiper blades replaced by a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center.

! Always position the windshield wiper

arms vertically before folding them away from the windshield. By doing so, you will avoid damage to the hood.

Windshield wipers

253

Replacing the wiper blades Moving the wiper blades to a vertical position Vehicles without KEYLESS-GO X Turn the SmartKey to position 1 or 2 in the

ignition lock.

X Set the windshield wipers to

position °.

X When the wiper arms have reached a vertical position, turn the SmartKey to position 0 and remove it from the ignition lock.

Vehicles with KEYLESS-GO X Switch off the engine. X Remove your foot from the brake pedal. X Set the windshield wipers to

position °.

X Press the Start/Stop button repeatedly

until the windshield wipers start.

X When the wiper arms have reached a vertical position, press the Start/Stop button.

Removing the wiper blades X Fold the wiper arm away from the

windshield until it engages.

X Set the wiper blade at right angles to the

wiper arm.

X Remove the wiper blade from the retaining pin on the wiper arm in the direction of the arrow.

Installing the wiper blades X Push the new wiper blade onto the retaining pin on the wiper arm in the opposite direction to the arrow. Make sure that the wiper blade slides fully onto the retaining pin on the wiper arm. X Turn the wiper blade parallel to the wiper

arm.

X Fold the wiper arm back onto the

windshield.

Problems with the windshield wipers The windshield wipers are obstructed Leaves or snow, for example, may be obstructing the windshield wiper movement. The wiper motor has been deactivated. X For safety reasons, you should remove the

SmartKey from the ignition lock.

or X Switch off the engine using the Start/Stop

button and open the driver's door.

X Remove the cause of the obstruction. X Switch the windshield wipers back on.

The windshield wipers are inoperative The windshield wiper drive is malfunctioning. X Select another wiper speed on the

combination switch.

X Have the windshield wipers checked at a

qualified specialist workshop.

The spray nozzles are misaligned The windshield washer fluid from the spray nozzles no longer hits the center of the windshield. The spray nozzles are misaligned. X Have the spray nozzles adjusted at a

qualified specialist workshop.

254

Useful information ............................ 256
Overview of climate control sys- tems ................................................... 256
Operating the climate control sys- tem ..................................................... 257
Setting the air vents ......................... 261

255

256 Overview of climate control systems

You can also set some automatic climate control functions via COMAND (Y page 235). i Ventilate the vehicle for a brief period

during warm weather, e.g. using the convenience opening feature (Y page 87). This will speed up the cooling process and the desired vehicle interior temperature will be reached more quickly.

i The integrated filter can filter out most

particles of dust and completely filters out pollen. A clogged filter reduces the amount of air supplied to the vehicle interior. For this reason, you should always observe the interval for replacing the filter, which is specified in the Service Booklet. As it depends on environmental conditions, e.g. heavy air pollution, the interval may be shorter than stated in the Service Booklet.

i It is possible that the blower may be

activated automatically 40 minutes after the SmartKey is removed. The vehicle is then ventilated for 30 minutes to dry the air-conditioning system.

Useful information

i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety- related systems and functions.

i Please read the information on qualified

specialist workshops (Y page 29).

Overview of climate control systems Important safety notes G WARNING Severe conditions (e.g. strong air pollution) may require replacement of the filter before its scheduled replacement interval. A clogged filter will reduce the air volume to the interior and the windows could fog up, impairing visibility and endangering you and others. Have a blocked filter replaced at a Mercedes- Benz Center as soon as possible. G WARNING Follow the recommended settings for heating and cooling given on the following pages. Otherwise, the windows could fog up, impairing visibility and endangering you and others.

The automatic climate control controls the temperature and the humidity in the vehicle interior and filters undesirable substances from the air. The automatic climate control is only operational when the engine is running13. Optimum operation is only achieved when you drive with the side windows and the sliding sunroof closed.

13 The residual heat function can only be activated/deactivated if the ignition is switched off.

Operating the climate control system 257

Automatic climate control panel

: Sets climate control to automatic mode, left (Y page 258) ; Sets the temperature, left (Y page 259) = Sets the airflow, left (Y page 259) ? Defrosts the windshield (Y page 259) A Activates/deactivates air-recirculation mode (Y page 260) B Switches climate control on /off(Y page 257) C Switches the residual heat function on/off(Y page 261) D Switches the rear window defroster on/off (Y page 260) E Sets the airflow, right (Y page 259) F Sets the temperature, right (Y page 259) G Sets climate control to automatic mode, right (Y page 258)

Notes on using climate control Below, you can find a number of notes and recommendations to help you use climate control optimally. RActivate climate control using the à rocker switch. The indicator lamp in the à rocker switch lights up.

RSet the temperature to 72 ‡ (22 †). ROnly use the "defrosting" function briefly

until the windshield is clear again.

ROnly use "air-recirculation" mode briefly, e.g. if there are unpleasant outside odors or when in a tunnel. The windows could otherwise fog up as, in air-recirculation mode, no fresh air is drawn into the vehicle. RUse the residual heat function if you want

to heat or ventilate the vehicle interior when the ignition is switched off. The "residual heat" function can only be

activated or deactivated with the ignition switched off.

Operating the climate control system Activating/deactivating climate control Important information G WARNING When the climate control system is deactivated, the outside air supply and circulation are also deactivated. Only choose this setting for a short time. Otherwise the windows could fog up, impairing visibility and endangering you and others.

i Switch on climate control primarily using

the à rocker switch (Y page 258).

258 Operating the climate control system

Activating/deactivating X Turn the SmartKey to position 2 in the

ignition lock.

X To activate: press the ^ rocker switch

up or down. The indicator lamp in the rocker switch goes out. The previously selected settings come into effect again.

X To deactivate: press the ^ rocker

switch up or down. The indicator lamp in the rocker switch lights up.

Activating/deactivating the cooling with air dehumidification function Important information The cooling with air dehumidification function is only available when the engine is running. The air inside the vehicle is cooled and dehumidified according to the temperature selected. G WARNING If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others.

Condensation may drip from the underside of the vehicle when it is in cooling mode. This is normal and not a sign that there is a malfunction. You can activate or deactivate the cooling with air dehumidification function via COMAND (Y page 237). i The cooling with air dehumidification function uses refrigerant R134a. This coolant does not contain chlorofluorocarbons, and therefore does not damage the ozone layer.

Problems with the cooling with air dehumidification function If you can no longer switch on the cooling with air dehumidification function via COMAND, the cooling with air dehumidification function is switched off due to a malfunction. X Consult a qualified specialist workshop.

Setting climate control to automatic G WARNING If you switch off the cooling function, the vehicle will not be cooled when weather conditions are warm. The windows can fog up more quickly. Window fogging may impair visibility and endanger you and others.

In automatic mode, the set temperature is maintained automatically at a constant level. The system automatically regulates the temperature of the dispensed air, the airflow and the air distribution. Automatic mode will achieve optimal operation if cooling with air dehumidification is also activated. If desired, cooling with air dehumidification can be deactivated. X Turn the SmartKey to position 2 in the

ignition lock.

X Set the desired temperature. X To switch on: press the à rocker

switch up or down. The indicator lamp in the à rocker switch lights up.

X To deactivate: press the K rocker

switch up or down. The indicator lamp in the à rocker switch goes out.

or X Set the air distribution using COMAND

(Y page 236). The indicator lamp in the à rocker switch goes out.

Operating the climate control system 259

Setting the temperature

_ Directs air through the defroster,

center, side and footwell vents

b Directs air through the defroster,

center and side air vents

W Sets the air distribution to automatic The air distribution can be set using COMAND (Y page 236).

Climate control climate zones You can select different temperature settings for the driver's and front-passenger sides as well as for the footwells. X Turn the SmartKey to position 2 in the

ignition lock.

X To increase/reduce: press the w

rocker switch up or down. Only change the temperature setting in small increments. Start at 72 ‡ (22 †). i You can also use COMAND to set the

temperature (Y page 235).

i The footwell temperature can be set via

COMAND (Y page 238).

Setting the air distribution Air distribution settings The air distribution can be set individually for the driver's and front-passenger sides. ¯ Directs air through the defroster vents P Directs air through the center and side

air vents

O Directs the airflow through the

footwell air vents

S Directs air through the center, side and

footwell vents

a Directs air through the defroster and

footwell vents

14 Depending on the outside temperature.

Setting the airflow You can select different airflow settings for the driver's and front-passenger sides. X Turn the SmartKey to position 2 in the

ignition lock.

X To increase/reduce: press the K

rocker switch up or down.

You can also use COMAND to set the airflow (Y page 236).

Defrosting the windshield You can use this function to defrost the windshield or to defrost the inside of the windshield and the side windows. i You should only select the defrosting

function until the windshield is clear again.

X Turn the SmartKey to position 2 in the

ignition lock.

X To switch on: press the ¬ rocker

switch up or down. The indicator lamp in the ¬ rocker switch lights up. The climate control system switches to the following functions: Rcooling with air dehumidification on Rhigh airflow14
Rhigh temperature14
Rair distribution to the windshield and

front side windows

Rair-recirculation mode off

260 Operating the climate control system

X To deactivate: press the ¬ rocker

switch up or down. The indicator lamp in the ¬ rocker switch goes out. The previously selected settings come into effect again. The cooling with air dehumidification function remains on. Air-recirculation mode remains deactivated.

or X Press the w rocker switch up or down. or X Press the K rocker switch up or down.

MAX COOL maximum cooling The MAX COOL function is only available in vehicles for the USA. MAX COOL is only operational when the engine is running. The MAX COOL function is activated automatically: Rif climate control is set to automatic

(Ã) on both sides Rif additional cooling is used The display shows MAX COOL. This is the quickest way to cool the vehicle interior when the sliding sunroof and the side windows are closed.

Defrosting the windows Windows fogged up on the inside X Activate the cooling with air

dehumidification function via COMAND (Y page 237).

X Activate automatic mode Ã. X If the windows continue to fog up, activate

the defrosting function (Y page 259).

i You should only select this setting until

the windshield is clear again.

Windows fogged up on the outside X Switch on the windshield wipers. X Activate automatic climate control. i You should only select this setting until

the windshield is clear again.

Rear window defroster Activating/deactivating G WARNING Any accumulation of snow and ice should be removed from the rear window before driving. Visibility could otherwise be impaired, endangering you and others.

The rear window defroster has a high current draw. You should therefore switch it off as soon as the window is clear as it only switches off automatically after several minutes. If the battery voltage is too low, the rear window defroster may switch off. X Turn the SmartKey to position 2 in the

ignition lock.

X Press the ¤ rocker switch up or down.

The indicator lamp in the ¤ rocker switch lights up or goes out.

Problems with the rear window defroster The rear window defroster has deactivated itself prematurely or cannot be activated. X Switch off any consumers that are not required, e.g. reading lamps or interior lighting. When the battery is sufficiently charged, the rear window defroster is activated again automatically.

Activating/deactivating air- recirculation mode You can deactivate the flow of fresh air if unpleasant odors are entering the vehicle

from outside. The air already inside the vehicle will then be recirculated. G WARNING Fogged windows impair visibility, endangering you and others. If the windows begin to fog on the inside, switching off the air recirculation mode immediately should clear interior window fogging. If interior window fogging persists, make sure the air conditioning is activated, or press the ¬ button.

X Turn the SmartKey to position 2 in the

ignition lock.

X To activate: press the g rocker switch

up or down. The indicator lamp in the g rocker switch lights up.

i Air-recirculation mode is activated

automatically at high outside temperatures. The indicator lamp in the g rocker switch is not lit when automatic air-recirculation mode is activated. Outside air is added after about 30
minutes.

X To deactivate: press the g rocker

switch up or down. The indicator lamp in the g rocker switch goes out.

i Air-recirculation mode deactivates

automatically: Rafter approximately five minutes if

outside temperatures are less than about 41 ‡ (5 †)

Rafter approximately five minutes if cooling with air dehumidification is deactivated

Rafter approximately 30 minutes if outside

temperatures are over about 41 ‡ (5 †)

Setting the air vents

261

Activating/deactivating the residual heat function It is possible to make use of the residual heat of the engine to continue heating the stationary vehicle for up to 30 minutes after the engine has been switched off. The heating time depends on the temperature that has been set. i The blower will run at a low speed

regardless of the airflow setting.

i If you activate the residual heat function at high temperatures, only the ventilation will be activated. The blower runs at medium speed.

X Turn the SmartKey to position 0 in the

ignition lock or remove it.

X To activate: press the Ì rocker switch

up or down. The indicator lamp in the Ì rocker switch lights up.

X To deactivate: press the Ì rocker

switch up or down. The indicator lamp in the Ì rocker switch goes out.

i Residual heat is deactivated

automatically: Rafter about 30 minutes Rwhen the ignition is switched on Rif the battery voltage drops Rif the coolant temperature is too low

Setting the air vents Important safety notes G WARNING When operating the climate control, the air that enters the passenger compartment through the air vents can be very hot or very cold (depending on the set temperature). This could cause burns or frostbite to unprotected skin in the immediate area of the air vents.

262 Setting the air vents

Always keep sufficient distance between unprotected parts of the body and the air vents. If necessary, use the air distribution adjustment to direct the air to air vents in the vehicle interior that are not in the immediate area of unprotected skin.

In order to ensure the direct flow of fresh air through the air vents into the vehicle interior, please observe the following notes: Rkeep the air intake grille on the hood free of blockages, such as ice, snow or leaves Rnever cover the air vents or air intake grille

in the vehicle interior.

i For virtually draft-free ventilation, adjust

the sliders of the air vents to the center position.

Setting the center air vents

: Fixed center air vent ; Center air vent, right = Center vent thumbwheel, right ? Center vent thumbwheel, left A Center air vent, left X To open/close: turn thumbwheels =

and ? up or down.

Setting the side air vents

X To open/close: turn thumbwheel = up or

down.

i Side window defroster vent : is never completely shut, even if side air vent ; is shut.

Setting the air vents in the stowage compartment When automatic climate control is activated the stowage compartment can be ventilated, for instance to cool its contents. The level of airflow depends on the airflow and air distribution settings. The temperature of the air is approximately the same as that of the air flowing from the center air vents. ! Close the stowage compartment air vent

when heating mode is activated and activate "cooling with air dehumidification" if the outside temperature is high. Otherwise, temperature-sensitive items stored in the stowage compartment could be damaged.

Setting the air vents

263

Setting the rear-compartment air vents Setting the center vents in the rear compartment

X To switch the ventilation on/off: push

rocker switch down ; or up :.

Setting the glove box air vent When automatic climate control is activated, the glove box can be ventilated, for instance to cool its contents. The level of airflow depends on the airflow and air distribution settings. ! Close the air vent when heating the

vehicle. At high outside temperatures, open the air vent and activate the "cooling with air dehumidification" function. Otherwise, temperature-sensitive items stored in the glove box could be damaged.

: Rear-compartment air vent, left ; Rear-compartment air vent, right = Rear-compartment air vent thumbwheel,

right

? Rear-compartment air vent thumbwheel,

left

X To open/close: turn thumbwheel =

or ? to the right or left.

i Close the rear-compartment air vents when heating mode is activated, as no warm air flows through the rear- compartment air vents in the basic heating setting.

X To open: turn thumbwheel : counter-

clockwise from position 3 to position 2. X To close: turn thumbwheel : clockwise

from position 2 to position 3.

264

Useful information ............................ 266
Breaking-in notes .............................. 266
Driving ............................................... 266
Automatic transmission ................... 273
Refueling ............................................ 280
Parking ............................................... 283
Driving tips ........................................ 286
Driving systems ................................ 290

265

266 Driving

Useful information

i This Operator's Manual describes all models and all standard and optional equipment of your vehicle available at the time of publication of the Operator's Manual. Country-specific differences are possible. Please note that your vehicle may not be equipped with all features described. This also applies to safety- related systems and functions.

i Please read the information on qualified

specialist workshops (Y page 29).

Breaking-in notes The first 1000 miles (1500 km) The more you look after the engine when it is new, the more satisfied you will be with its performance in the future. RDrive at varying vehicle speeds and engine speeds for the first 1000 miles (1500 km) for this reason.

RAvoid overstraining the vehicle during this

period, e.g. driving at full throttle.

RChange gear in good time, at the latest

when the tachometer needle is 2/3 of the way to the red area in the tachometer display.

RDo not manually shift to a lower gear to

brake the vehicle.

RIf possible, do not depress the accelerator

pedal past the point of resistance (kickdown).

ROnly select shift ranges 3, 2 or 1 when

driving slowly, e.g. in mountainous terrain. RIf possible, drive in drive program E (in AMG

vehicles in drive program C) for the first 1000 miles (1500 km).

After 1000 miles (1500 km), you can increase the engine speed gradually and bring the vehicle up to full speed.

Additional breaking-in notes for AMG vehicles: Rdo not drive faster than 85 mph

(140 km/h) in the first 1000 miles (1500 km).

Ronly allow the engine to reach a maximum

engine speed of 4500 rpm briefly.

Rchange gear in good time. i You should also observe these notes on running in if the engine or parts of the drive train on your vehicle have been replaced.

i Always observe the respective speed

restrictions.

Driving Important safety notes 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 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. 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 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

Driving 267

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.

! Warm up the engine quickly. Do not use the engine's full performance until it has reached operating temperature. Only shift the automatic transmission to the desired drive position when the vehicle is stationary. Where possible, avoid spinning the drive wheels when pulling away on slippery roads. You could otherwise damage the drive train.

! CL 63 AMG: at low engine oil

temperatures below 68 ‡ (+20 †), the maximum engine speed is restricted in order to protect the engine. To protect the engine and maintain smooth engine operation, avoid driving at full throttle when the engine is cold.

SmartKey positions SmartKey

SmartKey for the vehicle. The ignition is not switched on. The engine cannot be started.

KEYLESS-GO General information Vehicles with KEYLESS-GO are equipped with a SmartKey featuring an integrated KEYLESS- GO function and a detachable Start/Stop button. The Start/Stop button must be inserted into the ignition lock and the SmartKey must be in the vehicle. Pressing the Start/Stop button several times in succession corresponds to the different SmartKey positions in the ignition lock. This is only the case if you are not depressing the brake pedal. If you depress the brake pedal and press the Start/Stop button, the engine starts immediately. The Start/Stop button can be removed from the ignition lock. Then, you can insert the SmartKey into the ignition lock. i You do not have to remove the Start/Stop

button from the ignition lock when you leave the vehicle. However, you should always take the SmartKey with you when leaving the vehicle. The vehicle can be started with the Start/Stop button and the electrical equipment can be operated while the SmartKey is in the vehicle.

g To remove the SmartKey 1 Power supply for some consumers, such

as the windshield wipers

2 Ignition (power supply for all consumers)

and drive position 3 To start the engine i The SmartKey can be turned in the

ignition lock even if it is not the correct

: Start/Stop button ; Ignition lock

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X Insert Start/Stop button : into ignition

lock ;.

i When you insert Start/Stop button :

into ignition lock ;, the system requires a detection time of approximately two seconds before you can use Start/Stop button :.

Start/Stop button = USA only ? Canada only X Position 0: if Start/Stop button : has not yet been pressed, this corresponds to the SmartKey being removed from the ignition.

X Position 1: press Start/Stop button :.

You can now activate the windshield wipers, for example.

i If you then open the driver's door when in

this position, the power supply is deactivated.

X Position 2 (ignition): press Start/Stop

button : twice.

i If you press Start/Stop button : once when in this position and the driver's door is open, the power supply is deactivated again.

As soon as the ignition is switched on, all the indicator lamps in the instrument cluster light up. If an indicator lamp does not go out after the engine is started or if it lights up while the vehicle is in motion, see (Y page 379).

Starting the engine Important safety notes 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.

! Do not depress the accelerator pedal

when starting the engine.

i The catalytic converter preheats for up to 30 seconds after a cold start. The sound of the engine may change during this time.

i The catalytic converter preheats for up to 30 seconds after a cold start. The sound of the engine may change during this time.

Automatic transmission X Shift the transmission to position P.

The transmission position display in the multifunction display shows P.

i You can also start the engine when the

transmission is in position N.

Starting procedure with the SmartKey i To start the engine using the SmartKey instead of KEYLESS-GO, pull the Start/ Stop button out of the ignition lock.

X Turn the SmartKey to position 3 in the

ignition lock (Y page 267) and release it as soon as the engine is running.

Using KEYLESS-GO to start the engine G WARNING As long as the SmartKey is in your vehicle, the vehicle can be started. Therefore, never leave children unattended in the vehicle, as they could otherwise accidentally start the engine. When leaving the vehicle, always take the SmartKey with you and lock the vehicle. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. A child's unsupervised access to a vehicle could result in an accident and/or serious personal injury.

i The Start/Stop button can be used to

start the vehicle manually without inserting the SmartKey into the ignition lock. The Start/Stop button must be inserted into the ignition lock and the SmartKey must be in the vehicle. This mode for starting the engine operates independently of the ECO start/stop automatic engine start function.

X Depress the brake pedal and keep it

depressed.

X Press the Start/Stop button (Y page 267)

once. The engine starts.

Pulling away Automatic transmission 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.

i It is only possible to shift the transmission

from position P to the desired position if

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you depress the brake pedal. Only then is the parking lock released. If you do not depress the brake pedal, you can move the DIRECT SELECT lever but the parking lock remains engaged.

X Depress the brake pedal and keep it

depressed.

X Shift the transmission to position D or R. X Release the brake pedal. X Carefully depress the accelerator pedal.

The electric parking brake (Y page 284) is automatically released. The red F (USA only) or ! (Canada only) indicator lamp in the instrument cluster goes out.

i The vehicle locks centrally once you have pulled away. The locking knobs in the doors drop down. You can open the doors from the inside at any time. You can also deactivate the automatic locking feature (Y page 234).

i Upshifts take place at higher engine

speeds after a cold start. This helps the catalytic converter to reach its operating temperature more quickly.

Hill start assist Hill start assist helps you when pulling away forwards or in reverse on an uphill gradient. It holds the vehicle for a short time after you have removed your foot from the brake pedal. This gives you enough time to move your foot from the brake pedal to the accelerator pedal and depress it before the vehicle begins to roll. G WARNING Never leave the vehicle when it is held by hill start assist. After approximately one second, hill start assist will no longer brake your vehicle and it could roll away.

270 Driving

X Take your foot off the brake pedal. i Once you have taken your foot off the

brake pedal, the vehicle is held for around one second.

X Pull away. Hill start assist will not function if: Ryou are pulling away on a level road or a

downhill gradient.

Rthe transmission is in position N. Rthe electric parking brake is applied. RESP® is malfunctioning.

ECO start/stop function General information The ECO start/stop function is only available for the CL 63 AMG. The ECO start/stop function is only available in drive program C. The ECO start/stop function switches the engine off automatically when the vehicle stops moving. The engine starts automatically when the driver wants to pull away again. The ECO start/stop function thereby helps you to reduce the fuel consumption and emissions of your vehicle. The ECO start/stop function is activated each time the engine is switched on. If all the requirements are fulfilled for automatic engine switch-off (Y page 270), the green ¤ ECO symbol is shown in the multifunction display and Stop/Start active appears. If not all of the requirements are fulfilled, the ¤ ECO symbol is shown in yellow and Stop/Start inactive appears. If the ECO start/stop function is deactivated (Y page 271), the ¤ symbol is not shown. G WARNING If the engine is switched off and the ECO symbol is shown in green in the multifunction display, the engine has been switched off

automatically. All of the vehicle's systems remain active. If you open the door, unfasten your seat belt or remove your foot from the brake pedal, the engine will automatically start. The vehicle may begin moving. You could suffer serious or even fatal injury or cause an accident resulting in injury or death. Never leave the vehicle while the ECO symbol in the multifunction display is shown in green or yellow. Always secure the vehicle against rolling away before leaving it.

! Always switch the ignition off and take the

key with you when leaving the vehicle.

Automatic engine switch-off The ECO start/stop function switches the engine off automatically if the vehicle is braked to a standstill and the brake remains depressed with the transmission in position D or N. i You can still activate the HOLD function when the vehicle is stationary, even if the engine has been switched off automatically. It is then not necessary to continue applying the brakes during the automatic stop phase. When you depress the accelerator pedal, the engine starts automatically and the braking effect of the HOLD function is deactivated. Depress the accelerator pedal carefully, as the engine must be started first.

The engine is only switched off if: Rthe outside temperature is within the range

which is suitable for the system. Rthe engine is at normal operating

temperature.

Rthe set temperature for the vehicle interior

has been reached.

Rthe battery is sufficiently charged. Rthe system detects that the windshield is not fogged up when the air-conditioning system is switched on.

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 information You can deactivate and activate the ECO start/stop function using COMAND (Y page 231). i You can also use the programmable button (Y page 109) 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 231): The ¤ ECO symbol goes out and the Stop/Start deactivated display

Driving 271

message is shown in the multifunction display.

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 231). The ¤ ECO symbol and the Stop/ Start active display message are shown in the multifunction display. If not all conditions for automatic engine switch-off are fulfilled (Y page 270), the Stop/Start inactive message appears. i If you activate the ECO start/stop

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

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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.