See also:

Activating HDC
Press the button; the LED above the button lights up. ...

Switching on automatically
Select transmission position R with the engine running. The images from Top View and PDC are displayed when the system has been switched on using iDrive. ...

Signal tones
When approaching an object, an intermittent tone is sounded that indicates the position of the object. For example, if an object is detected to the left rear of the vehicle, a signal tone sounds ...