See also:

Fogged up or dirty windshield
If the windshield in front of the camera is fogged up or dirty on the inside or outside, the Night View Assist Plus display is affected. WARNING Please do not forget that your primary resp ...

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 h ...

Setting the rear-compartment airflow using the front control panel
Turn the SmartKey to position 2 in the ignition lock. Activate the rear compartment function via COMAND. The rear-compartment climate control can be controlled via the front control panel ...