See also:

Tone
Only treble and bass can be set in the rear. The settings are made separately for the left and right headphones. Operation is the same as for the front tone. ...

Front airbags
Front airbags help protect the driver and front passenger by responding to frontal impacts in which safety belts alone cannot provide adequate restraint. ...

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 ...