The concept

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

Hill Descent Control can be activated 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.

As long as there is active braking, the system is on standby. The system does not brake the vehicle during this time.

Use HDC in low gears or in transmission position D or R only.

    See also:

    Radio ready state and ignition off
    All indicator and warning lamps as well as displays in the instrument cluster go out. Transmission position P with the ignition off When the ignition is switched off, position P is engaged a ...

    Switch off the engine during longer stops
    Switch off the engine during longer stops, e.g., at traffic lights, railroad crossings or in traffic congestion. Fuel savings are achieved after the vehicle is switched off for only approx. 4 s ...

    Automatic soft closing
    To close the tailgate fully, press down lightly only. It is closed automatically. ...