The concept
HDC is a downhill driving assistant that automatically controls vehicle speed on steep downhill gradients. Without requiring brake application, the vehicle moves at slightly more than twice walking speed.
You can activate the Hill Descent Control at speeds below approx. 22 mph/35 km/h. When driving downhill, the vehicle reduces its speed to approx. twice walking speed and then keeps its speed constant.
While you are actively braking, the system is on standby. The system does not brake the vehicle during this time.
See also:
Status field symbols
The symbols are grouped as follows.
Radio symbols
Telephone symbols
Entertainment symbols
Additional symbols
...
Updating the navigation data
General information
Navigation data are stored in the vehicle and can
be updated.
Current navigation data and the authorization
code are available from your service center.
► Depending ...
Display in the instrument cluster
The selected speed is displayed
in the speedometer.
Green: the system is actively
braking the vehicle.
Orange: the system is on
standby.
...
