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:

    Cooling function
    The passenger compartment can only be cooled with the engine running. Press the button. The air is cooled and dehumidified and – depending on the temperature setting – warmed again. The cool ...

    Calling up the stored desired speed and distance
    While driving Press button 4,  All of the displays in the instrument panel lights While standing Before leaving the vehicle Before leaving the vehicle with the engine running, engage po ...

    Tachometer
    Tachometer Never force the engine speed up into the red warning field, see arrow. In this range, the fuel supply is interrupted to protect the engine. ...