Hill Descent Control (HDC) restricts the vehicle’s speed to a set limit when traveling downhill.
Touch the HDC icon on the touchscreen to select HDC.
The instrument panel displays a confirmation message and illuminates the HDC information lamp to confirm that HDC has been selected. See HILL DESCENT CONTROL (HDC) (GREEN).
HDC remains selected for up to 6 hours after the vehicle’s ignition is switched off.
Touch the HDC icon a second time to deselect HDC. The instrument panel displays a confirmation message and extinguishes the HDC information lamp. If HDC is deselected while it is active, operation fades out, allowing the vehicle’s speed to increase.
To adjust the vehicle’s rate of descent:
The instrument panel displays the current set speed and the range of set speeds available.
Hill Descent Control (HDC) does not operate when Park (P) is selected.
HDC operation is suspended if the vehicle’s speed exceeds 30 mph (50 km/h). In this instance, the instrument panel display turns gray and warning messages are displayed. The HDC information lamp also flashes.
HDC operation is disabled if the vehicle’s speed exceeds 50 mph (80 km/h). The instrument panel displays a message and extinguishes the HDC information lamp.
If a fault is detected while HDC is active:
Contact a retailer/authorized repairer as soon as possible if an HDC fault occurs.
Gradient Release Control (GRC) improves the vehicle’s ability to smoothly pull away from a standstill when on an incline or decline. GRC achieves this by automatically controlling brake operation once the brake pedal is released. No driver intervention is required.
GRC operates when forward or reverse gears are selected.
GRC also operates if the brakes are applied while Hill Descent Control (HDC) is active. See HILL DESCENT CONTROL (HDC).
GRC does not operate if the terrain response sand driving program is selected. See SAND.
In extreme circumstances, prolonged use of the Hill Descent Control (HDC) system may cause excessive brake temperatures. In this event, the instrument panel displays a warning message, indicating that the HDC system is temporarily unavailable. HDC operation fades out and becomes temporarily inactive.
When the brake temperatures have returned to normal, the instrument panel warning message extinguishes and HDC operation resumes.
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