See also:

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

Maintenance
The battery is maintenance-free, i.e., the electrolyte will last for the life of the battery. Your service center will be glad to advise you on questions regarding the battery. ...

Operating from the inside
Via the button for the central locking system If the vehicle is locked from the inside, the fuel filler flap remains unlocked. If an accident of a certain severity occurs, the central locking sy ...