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. ...

Calling up the stored desired speed and distance
While driving Press button 4,  All of the displays in the instrument panel lights While standing Before leaving the vehicle Before leaving the vehicle with the engine running, engage po ...

System limits
Check the traffic situation as well PDC cannot serve as a substitute for the driver's personal judgment of the traffic situation. Check the traffic situation around the vehicle with your own e ...