See also:

Tire inflation pressure values up to 100 mph/160 km/h
740i, 740Li, 750i, 750Li 760Li 750i xDrive, 750Li xDrive ...

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

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