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countries, operation of the headlamps varies due to legal requirements and self-imposed obligations.
Information about driving abroad
To convert to symmetrical low beam when driving abroad: switch the headlamps to symmetrical low beam in countries in which traffic drives on the opposite side of the road from the country where the vehicle is registered. This prevents glare to oncoming traffic. Symmetrical lights do not illuminate as large an area of the edge of the road.
Have the headlamps converted at a qualified specialist workshop as close to the border as possible before driving in these countries.
To convert to asymmetrical low beam after returning: have the headlamps converted back to asymmetrical low beam at a qualified specialist workshop as soon as possible after crossing the border and returning to the original country.
Operation
Depending on the date of manufacture of your vehicle, the c or à symbol for the automatic headlamp mode/daytime running lamps is located on the light switch.
1W Left-hand standing lamps
2X Right-hand standing lamps
3$ Lights off/daytime running lamps
4c Automatic headlamp mode/daytime
running lamps
5T Parking lamps, license plate and
instrument cluster lighting
6L Low-beam/high-beam headlamps 7N Front fog lamps11
8R Rear fog lampThe turn signals, high-beam headlamps and the high-beam flasher are operated using the combination switch (Y page 283).
! Switch off the parking lamps and standing
lamps when you leave the vehicle. This prevents the battery from discharging.
The exterior lighting (except the parking/ standing lamps) switches off automatically if you:
Rremove the SmartKey from the ignition lock
Ropen the driver's door with the SmartKey
in position 0
If you hear a warning tone when you leave the vehicle, the lights may still be switched on.
11 Only vehicles with Bi-Xenon headlamps without the Intelligent Light System are equipped with front fog lamps.
Exterior lighting 281
X Turn the light switch to $ or c.
Daytime running lamps in the USA
or
X If the rear fog lamp is switched on: press
In the USA, the daytime running lamps are deactivated upon delivery from the factory.
the light switch in to the stop.
X To activate the daytime running
Low-beam headlamps
X To switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to position 2 or start the engine. X Turn the light switch to L.
TheT indicator lamp on the light switch lights up.
X To switch off the low-beam
headlamps: turn the light switch to $.
Daytime running lamps
Daytime running lamps in Canada
The daytime running lamps function is required by law in Canada. It cannot therefore be deactivated. X Turn the light switch to $ or c.
With the engine running: depending on the ambient light, the daytime running lamps or the low-beam headlamps are switched on.
When the low-beam headlamps are switched on, the T indicator lamp on the light switch lights up.
When the engine is running and the vehicle is stationary or if the electronic parking brake is applied: if you move the selector lever from a drive position to P, the daytime running lamps/low-beam headlamps go out after three minutes.
When the engine is running, the vehicle is stationary and in high ambient light brightness: if you turn the light switch to T, you turn on the daytime running lamps and parking lamps.
If the engine is running and you turn the light switch to L, the manual settings take precedence over the daytime running lamps.
lamps: activate the daytime running lamps function in the on-board computer (Y page 387).
X Turn the light switch to $ or c.
With the engine running: depending on the ambient light, the daytime running lamps or the low-beam headlamps are switched on.
When the low-beam headlamps are switched on, the T indicator lamp on the light switch lights up.
If the engine is running and you turn the light switch to T or L, the manual settings take precedence over the daytime running lamps.
Automatic headlamp mode
X To switch on automatic headlamp mode: turn the light switch to c. SmartKey in position 1 in the ignition lock: the parking lamps are switched on or off automatically depending on the brightness of the ambient light.
With the engine running: depending on the brightness of the ambient light, the daytime running lamps12 or the parking lamps and low-beam headlamps are switched on or off automatically.
When the low-beam headlamps are switched on, the T indicator lamp on the light switch lights up.
G WARNING If the light switch is set toc, the low-beam headlamps will not come on automatically if it is foggy. This could endanger you and others. Therefore, turn the light switch to L in fog.
12 Only if daytime running lamps have been activated via the on-board computer.
282 Exterior lighting
Rear fog lamp
X To switch on the rear fog lamp: turn the SmartKey in the ignition lock to position 2
or start the engine.X Turn the light switch to L or T
(vehicles with front fog lamps), or turn the light switch to L (vehicles without front fog lamps). If the light switch is set to c, you cannot switch on the rear fog lamp.
X Turn the light switch to L. If the light
switch is set toT, you cannot switch on the rear fog lamp.
X Pull the light switch out to the second stop (vehicles with front fog lamps) or pull it out to the stop (vehicles without front fog lamps). The yellowR 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 yellowR indicator lamp on the light switch goes out.
Headlamp cleaning system
If the "Wipe with washer fluid" function is operated five times (Y page 289) while the lights are on and the engine is running, the headlamps are cleaned automatically. When you switch off the ignition, the automatic headlamp cleaning system is reset and counting is resumed from 0.
The automatic headlamp feature is only an aid. The driver is responsible for the vehicle's lighting at all times.
G WARNING When it is dark or foggy, turn the light switch quickly from c to L. Otherwise, the headlamps could switch off temporarily and you could cause an accident.
Front fog lamps
G WARNING If you suspect that driving conditions will be foggy, turn the light switch toL before you start your journey. Your vehicle may otherwise not be visible and you could endanger yourself and others.
G WARNING In low ambient lighting or foggy conditions, only switch from position c to L with the vehicle at a standstill in a safe location. Switching from c to L will briefly switch off the headlamps. Doing so while driving in low ambient lighting conditions may result in an accident.
X To switch on the front fog lamps: turn
the SmartKey in the ignition lock to position 2 or start the engine.
X Turn the light switch toL orT. If the
light switch is set to c, you cannot switch on the fog lamps.
X Pull the light switch out to the first detent. The green N indicator lamp on the light switch lights up.
X To switch off the front fog lamps: press
the light switch in as far as it will go. The green N indicator lamp on the light switch goes out.
Combination switch
High-beam flasher
Exterior lighting 283
Turn signals
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 =.
Hazard warning lamps
: High-beam headlamps
; Right turn signal
= 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.
The hazard warning lamps automatically switch on if:
Ran air bag is deployed.
Rthe vehicle is slowed down rapidly 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 :.
If the vehicle returns to a speed of over 6 mph (10 km/h) after a full application of the brakes, the hazard warning lamps are deactivated automatically.
i The hazard warning lamps still operate if
the ignition is switched off.
284 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. The cornering light function 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) and turn the steering wheel
Not active: if you are driving at speeds above 25 mph (40 km/h) or switch off the turn signals 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 388). X Turn the light switch to c.
X Press the combination switch beyond the pressure point in the direction of arrow : (Y page 283). 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 at speeds above 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 are driving at speeds above approximately 35 mph (55 km/h) and no other road users have been detected:
Interior lighting 285
the high-beam headlamps are switched on automatically. The K indicator lamp in the instrument cluster also lights up.
If you drive at speeds below 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.
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
Front overhead control panel : p Switches the left-hand reading lamp
on/off
; u 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
286 Replacing bulbs
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
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 the Xenon bulbs yourself, but have them replaced at a qualified workshop.
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.
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 287). Have the bulbs that you cannot replace yourself changed 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
Rear-compartment overhead control panel : Reading lamp ; Press p consecutively:
to switch the reading lamp and interior lighting on to switch only the reading lamp on to switch the reading lamp off
= Interior lighting
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 267).
Replacing bulbs
287
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 become very hot. For this reason, allow them to cool down before changing them. Otherwise, you could burn yourself when you touch them.
Keep bulbs out of the reach of children. Otherwise, they could, for example, damage the bulbs and injure themselves.
Never use a bulb which has been dropped. Such a bulb may explode and injure you.
Halogen bulbs are pressurized and could explode when you change them, especially 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 (vehicles with halogen daytime running lamps) : High-beam spot lamp: H7 55 W
Bi-Xenon headlamps (vehicles with LED daytime running lamps) : High-beam spot lamp13: H11 55 W ; Infrared light (Night View Assist Plus):
H11 55 W
13 Due to their location, have the bulbs in the left-hand headlamp changed at a qualified specialist workshop,
e.g. an authorized Mercedes-Benz Center.
288 Replacing bulbs
Changing the front bulbs
High-beam spot lamp (vehicles with
halogen daytime running lamps)
High-beam spot lamp (vehicles with
LED-daytime running lamps)/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 ;.
Left-hand headlamp: cable outlet = must be pointing up and to the right. Right-hand headlamp: cable outlet = must be pointing down and to the left.
Due to their location, have the bulbs in the left-hand headlamp changed at a qualified specialist workshop.
X Switch off the lights.
X Open the hood. X Turn housing cover : counterclockwise
and pull it out.
X Turn bulb holder ; counterclockwise and
pull it out.
X Push the two detents on the right and left
of bulb holder ; and pull the bulb from bulb holder ;.
X Insert the new bulb into bulb holder ; until
it engages.
X Turn bulb holder ; clockwise.
X Insert bulb holder ; into the guide in the
Handle ? of bulb holder ; is horizontal.
X Align housing cover : and turn it
clockwise until it engages.
headlamp. Cable outlet = must be pointing down and to the right.
X Turn bulb holder ; clockwise.
Cable outlet = must be pointing down and to the left.
X Align housing cover : and turn it
clockwise until it engages.
Windshield wipers
289
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 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, low14
3 Å Intermittent wipe, high15
4 ° Continuous wipe, slow14 Rain sensor set to low sensitivity. 15 Rain sensor set to high sensitivity.
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.
In theÄ orÅ 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 SmartKey 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.
! 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.
290 Windshield wipers
Hold the windshield wiper arm firmly when you change the wiper blade. If you release the windshield wiper arm without awiper 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.
! To avoid damaging the wiper blades,
make sure that you touch only the wiper arm of the wiper.
Changing the windshield 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.
Windshield wipers
291
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.
292
Useful information ............................ 294
Overview of climate control sys- tems ................................................... 294
Operating the climate control sys- tems ................................................... 296
Setting the air vents ......................... 302
293
294 Overview of climate control systems
You can also set some automatic climate control functions via COMAND (Y page 269).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the convenience opening feature (Y page 96). 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 Maintenance Booklet. As it depends on environmental conditions, e.g. heavy air pollution, the interval may be shorter than stated in the Maintenance 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 31).
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.
Automatic climate control controls the temperature and the humidity in the vehicle interior and filters undesirable substances from the air.
Automatic climate control is only operational when the engine is running16. Optimum operation is only achieved if you drive with the side windows and sliding sunroof/panorama roof with power tilt/sliding panel closed.
16 The residual heat function can only be activated/deactivated if the ignition is switched off.
Overview of climate control systems
295
Automatic climate control panel
Front control panel
: Sets climate control to automatic mode, left (Y page 297)
; Sets the temperature, left (Y page 298)
= Sets the airflow, left (Ypage 299)
? Defrosts the windshield (Y page 300)
A Activates/deactivates air-recirculation mode (Y page 301)
B Switches climate control on /off(Y page 296)
C Switches the residual heat function on/off(Y page 302)
D Switches the rear window defroster on/off (Y page 301)
E Sets the airflow, right (Y page 299)
F Sets the temperature, right (Y page 298)
G Sets climate control to automatic mode, right (Y page 297)
Rear control panel
H Sets the temperature, left (Y page 298)
I Sets the air distribution, left (Y page 299)
J Sets the airflow (Y page 299) K OFF Switches rear-compartment climate control off (Y page 296)
AUTO Sets rear-compartment climate control to automatic mode (Y page 297) MAN Sets rear-compartment climate control to manual mode (Y page 297)
L Sets the air distribution, right (Y page 299)
M Sets the temperature, right (Y page 298)
296 Operating the climate control systems
Switching the front climate control on/
off using the front control panel
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.
Switching the rear-compartment
climate control on/off using the front
control panel
X Turn the SmartKey to position 2 in the
ignition lock.
X Activate the Y rear compartment function via COMAND (Y page 273). The rear-compartment climate control can be controlled via the front control panel using theY rear compartment function. 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.
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
systems
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 297).
Operating the climate control systems
297
Switching the rear-compartment
Problems with the cooling with air
climate control on/off using the rear
dehumidification function
control panel
X Turn the SmartKey to position 2 in the
ignition lock.
X To switch on: press rocker switch
K(Y page 295) up or down and select AUTO.
or X Press rocker switch K(Y page 295) up or
down and select MAN.
X To switch off: press rocker switch
K(Y page 295) up or down and select OFF.
Activating/deactivating cooling with
air dehumidification
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 271).
i The cooling with air dehumidification function uses refrigerant R134a. This coolant does not contain chlorofluorocarbons, and therefore does not damage the ozone layer.
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.
Controlling the front climate control
using the front control panel
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.
298 Operating the climate control systems
X To deactivate: press the K rocker
Controlling the rear-compartment
switch up or down. The indicator lamp in the à rocker switch goes out.
or
X Set the air distribution using COMAND
(Y page 270). The indicator lamp in the à rocker switch goes out.
Controlling the rear-compartment
climate control automatically using the
front control panel
climate control automatically using the
rear control panel
X Turn the SmartKey to position 2 in the
ignition lock.
X Set the desired temperature. X To activate: press rocker switch K up or
down and select AUTO(Y page 295).
X To deactivate: press rocker switch K up
or down and select MAN or OFF(Y page 295).
X Turn the SmartKey to position 2 in the
Setting the temperature
ignition lock.
X Activate the Y rear compartment function via COMAND (Y page 273). Rear-compartment climate control can be controlled via the front control panel using the Y rear compartment function.
X Set the desired temperature. X To switch on: press rocker switch Ã
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 270). The indicator lamp in the à rocker switch goes out.
i To return to the standard display, activate
the front climate control function via COMAND (Y page 273).
i The rear display changes to the standard
display automatically after five seconds.
Climate control climate zones
You can select different temperature settings for the driver's and front-passenger sides as well as for the left and right sides of the rear compartment and the footwells.
Setting the temperature in the front
compartment using the front control
panel
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 270).
Operating the climate control systems
299
Setting the temperature in the rear
O Directs the airflow through the
compartment using the front control
footwell air vents
panel
X Turn the SmartKey to position 2 in the
ignition lock.
X Activate the "rear Y" function via
COMAND (Y page 273). Using the "rear Y" function, the rear- compartment climate control can be controlled via the front control panel. X To increase/reduce: press the w
rocker switch up or down.
S Directs air through the center, side and
footwell vents
a Directs air through the defroster and
footwell vents
_ 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
Only change the temperature setting in small increments. Start at 72 ‡ (22 † ).
Setting the air distribution in the front/
rear compartment using COMAND
i To return to the standard display, activate
the front climate control function via COMAND (Y page 273).
i The rear display changes to the standard
display automatically after five seconds.
Setting the temperature in the rear
compartment using the rear control
panel
X Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: press rocker
switch H or M up or down (Y page 295).
Only change the temperature setting in small increments. Start at 72 ‡ (22 † ).
Setting the footwell temperature
The footwell temperature can be set via COMAND (Y page 272).
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
The air distribution can be set using COMAND (Y page 270).
Setting the air distribution in the rear
compartment using the rear control
panel
X Turn the SmartKey to position 2 in the
ignition lock.
X Press rocker switch I or L up or down repeatedly (Y page 295) until the desired air distribution symbol is shown in the display.
Setting the airflow
Setting the front-compartment airflow
using the front control panel
You can select different airflow settings for the driver's and front-passenger sides as well as for the rear compartment.
You can also use COMAND to set the airflow (Y page 271).
X Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: press the K
rocker switch up or down.
300 Operating the climate control systems
Setting the rear-compartment airflow
X To deactivate: press the ¬ rocker
using the front control panel
X Turn the SmartKey to position 2 in the
ignition lock.
X Activate the Y rear compartment function via COMAND (Y page 273). The rear-compartment climate control can be controlled via the front control panel using theY rear compartment function.
X To increase/reduce: press the K
rocker switch up or down.
Setting the rear-compartment airflow
using the rear control panel
X Turn the SmartKey to position 2 in the
ignition lock.
X To increase/reduce: press rocker switch
J up or down (Y page 295).
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 airflow17
Rhigh temperature17
Rair distribution to the windshield and
front side windows
Rair-recirculation mode off
17 Depending on the outside temperature.
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 271).
X Activate automatic mode Ã.
X If the windows continue to fog up, activate
the defrosting function (Y page 300).
i You should only select this setting until
the windshield is clear again.
Operating the climate control systems
301
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. Otherwise, the rear window defroster 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 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.
302 Setting the air vents
i Air-recirculation mode deactivates
Setting the air vents
automatically:
Rafter approximately five minutes at
outside temperatures below approximately 41 ‡ (5 †)
Rafter approximately five minutes if cooling with air dehumidification is deactivated
Rafter approximately 30 minutes at
outside temperatures above approximately 41 ‡ (5 †)
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
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.
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
