HDC Hill Descent Control
The concept
HDC is a downhill driving assistant that automatically controls vehicle speed on steep downhill gradients. Without applying the brakes, the vehicle moves at slightly more than 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.
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:
Calibrating the digital compass
The digital compass must be calibrated in the
following situations:
▷ An incorrect compass direction is shown.
The cardinal direction displayed does not
change even if the direction of tra ...
Tire inflation pressure values up to
100 mph/160 km/h
528i
528i xDrive
535i
550i
535i xDrive
550i xDrive
...
Deactivating the system
▷ Press the lever upward or downward twice,
arrow 3.
▷ Switch off the ignition.
The stored speed is cleared. ...
