System function
The DSG® automated transmission selects the optimum gear itself, depending on the present gradient and current speed.
The selector lever must be in the
selector lever position. Downhill speed control is not active in Tiptronic mode.
As the downhill speed control can only downshift as far as third gear, you may need to switch to Tiptronic mode on very steep
downhill stretches. In Tiptronic mode, manually shift into second or first gear to use the engine's braking efficiency and reduce
the load on the brakes.
While downhill speed control is active, the start-stop system is automatically deactivated.
Automatically activating downhill speed control
If the gradient is greater than approximately 6%.
And: if the selector lever is in the
selector lever position.
In addition, if the cruise control system (CCS ) is switched off: if the speed is slower than approx. 80 km/h (approx.
50 mph).
Or: The brake is pressed.
If the cruise control system (CCS) is also active: if the saved speed is exceeded.
In addition, if Adaptive Cruise Control (ACC ) is switched off: if the speed is slower than approx. 80 km/h (approx.
50 mph).
Or: The brake is pressed.
If the Adaptive Cruise Control (ACC) is also active: if the saved speed is exceeded.
Downhill speed control deactivates automatically
When the gradient decreases.
If the transmission upshifts because the engine speed is greater than approximately 4500 rpm.
If the cruise control system (CCS) is also active: if the saved speed can be maintained.
If the Adaptive Cruise Control (ACC) is also active: if the saved speed can be maintained.
WARNING
The downhill speed control is not a replacement for the driver's attention and works only within the system limitations. The
downhill speed control cannot detect all driving situations and may not react, or may react with a delay, or may react in a
way that is not desired. If you are careless, there is a risk of accidents due to unintentional vehicle movement. This can
cause serious or fatal injuries.
Always stay attentive and do not rely solely on the system. The driver is always responsible for control of the
vehicle.
Be aware that the downhill speed control cannot hold the vehicle on the incline or brake sufficiently going downhill
in every situation, for example if the ground is slippery or icy.
Always be ready to brake, in particular if the ground is slippery or icy.
Manually brake the vehicle if the vehicle moves faster despite downhill speed control.
Always adapt your speed and driving style to the visibility, weather, road and traffic conditions.
Hill Descent Control
Hill Descent Control helps the driver
when traveling on slopes.
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