See also:

Activating/deactivating airrecirculation mode
You can deactivate the flow of fresh air if unpleasant odors are entering the vehicle from outside. The air already inside the vehicle will then be recirculated. WARNING Fogged windows impai ...

Problems with the rear window defroster
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 ...

Decoupling a trailer
WARNING Vehicles with air suspension program: While you are coupling or decoupling a trailer, make sure nobody locks or unlocks the vehicle and/or opens or closes doors or the tailgate. The v ...