See also:

Locking and unlocking
Pressing the buttons locks and unlocks the doors and the tailgate when the front doors are closed, but they are not secured against theft. The fuel filler flap remains unlocked. ...

Parking brake
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels. Indicator lamp The indicator lamp is lit, and when you drive off a signal soun ...

Improved pedestrian protection
The front of the new BMW 3-Series features various pedestrian protection systems. An impact absorber is located between the bumper supports and bumper trim, reducing leg injuries, while the bonnet ...