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:

    Speed limit
    Entry of a speed limit which, when reached, should cause a Check Control message to be issued. Renewed warning if the vehicle speed drops below the set speed limit once by at least 3 mph/ 5 k ...

    Owner's Manual for Vehicle
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    Components of the integrated Owner's Manual
    The integrated Owner's Manual consists of three parts, which offer various levels of information or access possibilities. Quick Reference Guide Located in the Quick Reference is important inform ...