See also:

Close the windows and glass sunroof
Driving with the glass sunroof and windows open results in increased air resistance and raises fuel consumption. ...

Activating HDC
Press the button; the LED above the button lights up. ...

Parked car ventilation
The conceptThe parked car ventilation provides ventilation to the passenger compartment and lowers its temperature, if necessary. The parked car ventilation system is operated via iDrive. Two diffe ...