See also:

Head airbags
In a lateral impact, the head airbag supports the head. ...

BMW maintenance system
BMW maintenance system The maintenance system provides information on required maintenance measures and thus provides support in maintaining road safety and the operational reliability of the ...

Remove attached parts following use
Remove auxiliary mirrors, roof or rear luggage racks which are no longer required following use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...