See also:

Loss of the remote controls
Lost remote controls can be blocked by your service center. ...

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. ...

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 ...