Activating/deactivating

Any accumulation of snow and ice should be 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.
- Turn the SmartKey to position 2 in the ignition lock.
- Press the The indicator lamp in the  button button.
The indicator lamp in the lights button lights up or goes out.

    See also:

    High-beam headlamps
    To switch on the high-beam headlamps: turn the SmartKey in the ignition lock to position 2 or start the engine. Turn the light switch to or or . Press the combination switch beyond the ...

    Setting the temperature in the rear compartment using the front control panel
    Turn the SmartKey to position 2 in the ignition lock. Activate the rear compartment function via COMAND. The rear-compartment climate control can be controlled via the front control panel ...

    Important safety notes
    See the "Important safety notes" section. If ESP® detects that the vehicle is deviating from the direction desired by the driver, one or more wheels are braked to stabilize the veh ...