See also:

The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels. ...

Parking lamps/low beams
0.  Lamps off, daytime running lights 1.  Parking lamps and daytime running lights 2.  Low beams, welcome lamps 3.  Automatic headlamp control, daytime running lights, welcome ...

Switching on automatically
Select transmission position R with the engine running. The backup camera image is displayed if the system was switched on via the iDrive. ...