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:

    Destination guidance through voice instructions
    Switching voice instructions on/offVoice instructions can be switched on or off during destination guidance. 1.  "Navigation" 2.  "Map" 3.    "Voice ...

    Knob in the instrument cluster
    Press the knob. ▷ When the ignition is switched on, the trip odometer is reset. Press the knob for approx. 5 seconds: View service requirement display ▷ When the ignition is switched ...

    Issuing a warning
    If the vehicle begins leaving the lane and a lane marking has been detected, the steering wheel begins vibrating. If the turn signal is set before the lane is changed, a warning is not issued. ...