See also:

Alarm system
The conceptThe vehicle alarm system responds: > When a door, the hood or the trunk lid is opened > To movements inside the vehicle: interior motion sensor, > When the car's inclination ...

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 ...

Adjusting the height: electrical
The head restraints on the left and right rear passenger seats extend automatically whenever a passenger in the rear seat fastens his or her safety belt. In addition, the height of the head r ...