The concept
HDC is a downhill driving assistant that automatically controls vehicle speed on steep downhill gradients. The vehicle moves at approximately walking speed without braking intervention by the driver.
You can activate the Hill Descent Control at speeds below approx. 22 mph/35 km/h. When moving downhill at speeds below approx.
22 mph/35 km/h, the vehicle reduces its speed to approximately walking speed, approx. 5 mph/ 8 km/h and keeps it constant.
Only use HDC in transmission positions D or R.
See also:
Ride & Handling
One of my lasting memories of the prior-generation X3 was its extremely firm
ride, which led to a choppy driving experience on rough roads. It was
disappointing, to say the least, because BMWs oft ...
Preparation
1. Check whether the battery of the other vehicle
has a voltage of 12 volts. This information
can be found on the battery.
2. Switch off the engine of the assisting vehicle.
3. Switch off any el ...
Adjusting
Vehicle
Equipment
...
