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.

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.

2 in the ignition lock. Turn the SmartKey to position 2 in the ignition lock.
button. Press the The indicator lamp in the  button button.
The indicator lamp in the lights up or goes out. button lights up or goes out.

    See also:

    Parcel nets
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    Override feature for the rear side windows
    WARNING When children ride on the vehicle's rear seats, activate the override switch. Otherwise, the children could be injured, e.g. by trapping themselves in the rear side window. •` ...

    Warning and indicator lamps
    1 ABS 2 The lamp lights up briefly, but has no function. 3 Brakes (USA only) 4 ESP® 5 Distance warning signal On vehicles without DISTRONIC, the lamp lights up briefly but has no functi ...