2008 Jeep Grand Cherokee Owner's Manual - Page 149

UNDERSTANDING THE FEATURES OF YOUR VEHICLE 149 HSA Off If you wish to turn off the HSA system, it can be done using the Customer Programmable Features in the Electronic Vehicle Information Center (EVIC). Refer to "Electronic Vehicle Information Center (EVIC)" in Section 4 of this manual. HDC (Hill Descent Control) (4WD Models with NV245 Two-Speed Transfer Case Only) HDC maintains vehicle speed while descending hills during off-road driving situations and is available in 4 LOW range only. To enable HDC (transfer case must be in 4 LOW range), press the HDC switch. If the HDC switch is pressed when the vehicle is not in 4 LOW range, the light in the switch will flash for 5 seconds and HDC will not be enabled. 3 Hill Descent Switch When HDC is enabled properly, the message "HILL DESCENT CONTROL" will appear in the EVIC and the light in the switch will be illuminated. HDC will automatically apply the brakes to control downhill speed when necessary. HDC has the capability to sense terrain