See also:

Automatic deactivation during forward travel
The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...

The concept
The central locking system becomes active when the driver's door is closed. The system simultaneously engages and releases the locks on the following: ► Doors. ► Tailgate. ► ...

Safety
Both the coupe and convertible have front airbags plus side-impact airbags built into the front seats. As required of all 2012 models sold in the U.S., the 640i has standard antilock brakes and an ...