Rear window defroster

Activating/deactivating

WARNING Any accumulation of snow and ice should be 
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 button.

The indicator lamp in the lights button lights up or goes out.

Problems with the rear window defroster

If the indicator lamp in the rear window rear window defroster button flashes, the on-board voltage is too low or the roof is open. The rear window defroster has deactivated itself 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:

    Front fog lamps and rear fog lamp
    Front fog lamps Only vehicles with front fog lamps have the "fog lamps" function. WARNING   If you suspect that driving conditions will be foggy, turn the light switch to b ...

    Hydroplaning
    If water has accumulated to a certain depth on the road surface, there is a danger of hydroplaning occurring, even if: • you drive at low speeds. • the tires have adequate tread depth. For ...

    Automatic locking feature
    The vehicle locks automatically when the ignition is switched on and the wheels of the vehicle are turning at a speed of more than 9 mph (15 km/h). You could therefore be locked out when: • ...