See also:

Tire inflation pressure values over 100 mph/160 km/h
320i   328i 335i ...

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

Notes
Switch off the engine before refueling Always switch off the engine before refueling; otherwise, fuel cannot be added to the tank and a message will be displayed.◀ Observe when handlin ...