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:
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. ...
Displaying stored Check Control
messages
1. "Vehicle Info"
2. "Vehicle status"
3. "Check Control"
4. Select the text message.
Messages after trip completion
Malfunctions indicated during a trip are display ...
Caring for special components
Light-alloy wheels
Use wheel cleaner, particularly during the winter
months. Do not use aggressive, acidic, strongly
alkaline or abrasive cleaners, or steam jets
above 140 ℉/60 ℃; f ...