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:
Setting the exterior lighting
Setting options
Exterior lighting can be set using:
• the light switch
• the combination switch
• the on-board computer
Light switch
Operation
If you hear a warning tone when ...
Selecting, mounting and replacing
tires
R Only mount tires and wheels of the same
type and make.
Exception: it is permissible to install a different type or make in the event of
a flat tire. Observe the "MOExtended tires (tires wi ...
Center console
Vehicles with ON&OFFROAD menu
Vehicles without ON&OFFROAD menu
and AMG vehicles
...