See also:

Windows fogged up on the inside
Activate the cooling with air dehumidification function via COMAND. Activate automatic mode . If the windows continue to fog up, activate the defrosting function You should only select this ...

Important safety notes
WARNING When leaving the vehicle, always remove the SmartKey from the ignition lock. Always take the SmartKey with you and lock the vehicle. Do not leave children unattended in the vehicle, ...

Rear window defroster
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 o ...