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:

    Pairing and connecting a device
    Pairing a device To avoid becoming distracted and posing an unnecessary hazard both to your own vehicle's occupants and to other road users, only pair the device while the vehicle is stationa ...

    Requirements
    Via the Control Display, set a language that is also supported by the voice activation system so that the spoken commands can be identified. Set the language ...

    Repeating a spoken instruction
    1. "Navigation" 2. "Map" 3. Highlight the symbol. 4. Press the controller twice. ...