See also:

Switching on automatically
Select transmission position R with the engine running. The Top View and PDC images are displayed if the system is switched on via iDrive. ...

Deactivating HDC
Press the button again and the LED goes out. HDC is automatically deactivated above approx. 37 mph/60 km/h. ...

Volume
"Speed volume": speed-dependent volume control. "PDC": volume of the PDC signal* compared to the entertainment sound output. "Gong": volume of the signal, su ...