Jeep CHEROKEE User Manual page 86

Activating HDC
Once HDC is enabled it will activate auto-
matically if driven down a grade of sufficient
magnitude. The set speed for HDC is select-
able by the driver, and can be adjusted by
using the gear shift +/-. The following
summarizes the HDC set speeds:
HDC Target Set Speeds
P = No set speed. HDC may be enabled

but will not activate.
R = 0.6 mph (1 km/h)

N = 1.2 mph (2 km/h)

D = 0.6 mph (1 km/h)

1st = 0.6 mph (1 km/h)

2nd = 1.2 mph (2 km/h)

3rd = 1.8 mph (3 km/h)

4th = 2.5 mph (4 km/h)

5th = 3.1 mph (5 km/h)

6th = 3.7 mph (6 km/h)

7th = 4.3 mph (7 km/h)

8th = 5.0 mph (8 km/h)

9th = 5.6 mph (9 km/h) – If Equipped

84
NOTE:
During HDC the +/- shifter input is used for
HDC target speed selection, but will not
affect the gear chosen by the transmission.
When actively controlling HDC the transmis-
sion will shift appropriately
driver-selected set speed and corresponding
driving conditions.
Driver Override
The driver may override HDC activation with
throttle or brake application at any time.
Deactivating HDC
HDC will be deactivated but remain available
if any of the following conditions occur:
Driver overrides HDC set speed with

throttle or brake application.
Vehicle speed exceeds 20 mph (32 km/h)

but remains below 40 mph (64 km/h).
Vehicle is on a downhill grade of insuffi-

cient magnitude, is on level ground, or is
on an uphill grade.
Vehicle is shifted to PARK.

Disabling HDC
HDC will be deactivated and disabled if any
of the following conditions occur:
The driver pushes the HDC switch

for the
The driveline is shifted out of 4L Range

The park brake is applied

Driver door opens

The vehicle is driven greater than 20 mph

(32 km/h) for greater than 70 seconds
The vehicle is driven greater than 40 mph

(64 km/h) (HDC exits immediately)
HDC detects excessive brake temperature

Feedback To The Driver
The instrument cluster has an HDC icon and
the HDC switch has an LED icon, which
offers feedback to the driver about the state
HDC is in.
The cluster icon and switch lamp will illu-

minate and remain on solid when HDC is
enabled or activated. This is the normal
operating condition for HDC.