First read and observe the introductory information
and safety warnings
The downhill driving assistant in vehicles with an automatic gearbox helps when braking and travelling downhill . The downhill driving assistant uses the braking power of the engine.
The automatic gearbox selects the best gear for the circumstances by taking the steepness of the hill and the current speed into consideration. To do this the selector lever must be in position D or S. The downhill driving assistant is not active in Tiptronic mode.
As the downhill driving assistant can only shift down as far as the 3rd gear, it may be necessary to activate the Tiptronic mode when driving down particularly steep inclines. When in Tiptronic mode, select the 2nd or 1st gear manually in order to make use of the braking effect of the engine and to relieve the brakes.
Activating the downhill driving assistant automatically:
Deactivating the downhill driving assistant automatically:

WARNING
Start/stop system
ParkPilotOverview of fitting locations – lights in dash panel
Note
The illustration shows fitting locations for LHD vehicles. Fitting
locations for RHD vehicles are similar.
1 -
Front passenger side airbag deactivated warning lamp -K145-
The front passenger side airbag deactivated warning ...
Removing and installing cap on ignition key
Removing
–
Lift off lid for battery compartment
→ Chapter.
–
Remove bolt -1-.
–
Push cap -2- out from the ignition key
laterally -arrow-.
Installing
Note
Us ...
Removing and installing light for rear interior light -W43- with LED
Note
The lights used for the rear interior light -W43- are the
same as the rear left and rear right reading lights -W11-/
-W12-.
If the rear interior light -W43- is defective, the complete
interior light must b ...