The concept

HDC is a downhill driving assistant that automatically controls vehicle speed on steep downhill gradients. Without requiring brake application, the vehicle moves at slightly more than twice walking speed.

You can activate the Hill Descent Control at speeds below approx. 22 mph/35 km/h. When driving downhill, the vehicle reduces its speed to approx. twice walking speed and then keeps its speed constant.

While you are actively braking, the system is on standby. The system does not brake the vehicle during this time.

    See also:

    Hazard warning flashers
    The button is located in the center console. ...

    Storing stations
    Via iDrive1.  "Radio" 2.  "FM" or "AM" 3.  Select the desired station. 4.  Press the controller for an extended period. 5.  Select the desi ...

    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. ...