Mersedes SUV Manuals

Rear window defroster

Mercedes-Benz GL-Class / Mercedes-Benz GL-Class Owners Manual / Climate control / Operating the climate control systems / Rear window defroster

Activating/deactivating

The rear window defroster has a high current


The rear window defroster has a high current draw. You should therefore switch it off as soon as the rear window is clear. Otherwise, the rear window defroster 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

Activating/deactivating airrecirculation


    See also:

    Important safety notes
    You will find an illustration of the instrument cluster in the "At a glance". WARNING A driver's attention to the road and traffic conditions must always be his/her primary focus when ...

    Important safety notes
    WARNING Severe conditions (e.g. strong air pollution) may require replacement of the filter before its scheduled replacement interval. A clogged filter will reduce the air volume to the interior ...

    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. ` ...

    © 2025 Copyright www.mersuv.com