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:

    Switching off automatically
    The system switches off and the LED goes out: ▷ After approx. 33 ft/10 m when driving forward. ▷ After approx. 9 mph/15 km/h when driving forward. Switch on the system again if necess ...

    Closing the trunk lid
    Drive with the trunk lid closed Only drive with the tailgate closed; otherwise, in the event of an accident or braking or evasive maneuvers, passengers or other road users may be injured or th ...

    Interior motion sensor
    The windows and glass sunroof must be closed for the system to function properly ...