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:

    Maintenance
    Maintain the vehicle regularly to sustain the road safety, operational reliability and the New Vehicle Limited Warranty. Specifications for required maintenance measures: ▷ BMW Maintenance ...

    Switching off automatically
    System switches off: above approx. 9 mph/ 15 km/h. Switch on the system again if necessary. ...

    Communication
    All of the options available to you for mobile communication with family, friends, business partners, and service providers are described in this chapter. ...