BMW X3 Owners Manual: 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.
Only use HDC in low gears or in selector lever position D or R.
Increasing or decreasing vehicle speed
Specify desired speed in the range from approx.
4 mph/6 km/h to approx. 15 mph/25 km/h
using the rocker switch of the cruise control on
the steer ...
Other materials:
BMW X3 Owners Manual > Front-end collision warning
with braking function: The concept
The ystem can help prevent accidents. If an
accident cannot be prevented, the system will
help reduce the collision speed.
The system sounds a warning before an imminent
collision and actuates brakes independently
if needed.
The automatic braking intervention may be
executed with maximum ...