Switching the rear window defroster on/off
Activating/deactivating
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.
► Turn the SmartKey to position 2 in the ignition lock.
► USA only: press the 
button.
The indicator lamp in the 
button
lights
up or goes out.
The rear window defroster has a high current draw. You should therefore switch it off as soon as the rear 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.
Problems with the rear window defroster
If the indicator lamp in the
rear window
defroster button flashes, the on-board
voltage is too low. The rear window defroster
has deactivated prematurely or cannot be
activated.
► 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.
See also:
Activating/deactivating airrecirculation
mode
Points to observe before use
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.
If ...
Driving tips
Accelerator pedal position
Your style of driving influences how the
automatic transmission shifts gear:
• little throttle: early upshifts
• more throttle: late upshifts
Kickdown
Use kickdown for ...
Multifunction steering wheel
1 Multifunction display
2 COMAND; see the separate operating instructions
3
Rejects or ends a call
Exits phone book/redial memory
Makes or accepts a call
Switches to the redial memory
Ad ...