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:

    Remove attached partsfollowing use
    Remove auxiliary mirrors, roof or rear luggage racks which are no longer required following use. Attached parts on the vehicle impair the aerodynamics and increase the fuel consumption. ...

    Operation
    Adjusting the volume Turn the knob until the desired volume is reached. The setting is stored for the remote control currently in use. The vehicle automatically adjusts the volume of the microphon ...

    Switching the interior lamps on and off
    Press the button. To switch off permanently: press the button for approx. 3 seconds. Switch back on: press button. ...