HDC: Hill Descent Control

Hill Descent Control (HDC) is an automatic cruise control for descending hills in vehicles equipped with 4-wheel-drive. The HDC can be switched on and off at the center console switch center. HDC automatically reduces the driving speed. Braking intervention at all four wheels is employed to reduce the vehicle's velocity to just above walking speed. This allows stable downhill driving on steep and slippery surfaces. The HDC keeps this speed constant (the DSC functions all remain active). The vehicle speed can be adjusted through a continuous, stepless range lying between the following values using the accelerator pedal and the brake pedal or steering column stalk. Ex works, the lower freely programmable button on the multifunction steering wheel is set for the HDC.