See also:

Central locking system
The conceptThe central locking system functions when the driver's door is closed. The system simultaneously engages and releases the locks on the following: > Doors > Trunk lid > Fuel ...

Interior motion sensor
For the sensor to function properly, the windows and glass sunroof/panoramic glass sunroof must be closed. ...

Aerodynamic optimisation of underside panelling
As the excellent drag coefficient (cd = 0.26) would suggest, the aerodynamics of the new BMW 3-Series have been intensively honed in a state-of-the-art wind tunnel. The optimised aerodynamics also ...