See also:

Locking
▷ Press the button. The doors are locked. ▷ Press the lock button of a door. To prevent you from being locked out, the opened driver's door cannot be locked using the lock button. ...

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 ...

Malfunction
A message is displayed in the instrument cluster. HDC is not available, e.g., due to elevated brake temperatures. ...