Jeep Grand Cherokee, Operating Information Manual

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Enabling HDC
1. Shift the transfer case into 4WD LOW range.
Refer to “Four-Wheel Drive Operation” in “Start-
ing and Operating” for further information.
2. Press the “Hill Descent” button. The “Hill
Descent Control Indicator Light” in the instru-
ment cluster will turn on solid.
NOTE:
If the transfer case is not in 4WD LOW range,
the “Hill Descent Control Indicator Light”
will flash for five seconds and HDC will not
be enabled.
Disabling HDC
1. Press the “Hill Descent” button or shift the
transfer case out of 4WD LOW range. The “Hill
Descent Control Indicator” light in the instru-
ment cluster will turn off.
Electronic Stability Control (ESC)
This system enhances directional control and
stability of the vehicle under various driving
conditions. ESC corrects for over-steering and
under-steering the vehicle by applying the
brake of the appropriate wheel. Engine power
may also be reduced to help the vehicle main-
tain the desired path.
The ESC uses sensors in the vehicle to deter-
mine the path that the driver intends to steer the
vehicle and compares it to the actual path of
the vehicle. When the actual path does not
match the intended path, the ESC applies the
brake of the appropriate wheel to assist in
counteracting the condition of over-steer or
under-steer.
•
Oversteer - when the vehicle is turning more
than appropriate for the steering wheel po-
sition.
•
Understeer - when the vehicle is turning less
than appropriate for the steering wheel po-
sition.
WARNING!
The Electronic Stability Control (ESC) cannot
prevent the natural laws of physics from act-
ing on the vehicle, nor can it increase the
traction afforded by prevailing road condi-
tions. ESC cannot prevent accidents, includ-
ing those resulting from excessive speed in
turns, driving on very slippery surfaces, or
hydroplaning. Only a safe, attentive, and skill-
ful driver can prevent accidents. The capabili-
ties of an ESC equipped vehicle must never
be exploited in a reckless or dangerous man-
ner which could jeopardize the user’s safety
or the safety of others.
ESC Operating Modes
Depending upon model and mode of opera-
tion, the ESC system has up to three operating
modes: “ESC On” “Partial Off,” and “Full Off.”
ESC On – Four-Wheel Drive Vehicles in
2WD and 4WD High Range
This is the normal operating mode for ESC
when operating a two-wheel drive vehicle. It is
also the normal mode for operating a four-
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