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:

    USB audio interface/audio interface for mobile phone
    OverviewIt is possible to connect external audio devices. They can be operated via iDrive. Sound is output over the vehicle speakers. Options for connecting external devices > Connection via US ...

    Switching on automatically
    Select transmission position R with the engine running. The images from Top View and PDC are displayed when the system has been switched on using iDrive. ...

    Requirements
    The installed BMW Assist system is logged in to a wireless communications network. This network must be capable of transmitting the services. To transmit position data, the vehicle must ...