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.

•► Turn the SmartKey to position 2 in the ignition lock.

•► Press the The indicator lamp above the button button.

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

    See also:

    Service menu
    In the Serv. menu you can: • call up display messages • restart the tire pressure loss warning system (Canada only) • check the tire pressure electronically • call up the service due date ...

    Problems with the SmartKey
    Problem Possible causes/consequences and Solutions You cannot lock or unlock the vehicle using the SmartKey. The SmartKey battery is discharged or nearly discharged. - ...

    Exterior & Styling
    Particularly from the rear, the GL's appearance looks a bit like Mercedes' original M-Class — so much so that a passenger walked up to an older M thinking it was the GL. The GL550's 21-inch wheels ...