Jeep Wrangler Owner's Manual page 155

154 SAFETY
Full Off — If Equipped
The "Full Off" mode is intended for off-highway or off-road
use only and should not be used on any public roadways.
In this mode, TCS and ESC features are turned off. To
enter the "Full Off" mode, push and hold the ESC OFF
button for five seconds while the vehicle is stopped with
the engine running. After five seconds, a chime will sound,
the ESC OFF Indicator Light will illuminate, and the "ESC
OFF" message will display in the instrument cluster. To
turn ESC on again, momentarily push the ESC OFF button.
NOTE:
System may switch from ESC "Full Off" to "Partial Off"
mode when vehicle exceeds a predetermined speed.
When the vehicle speed slows below the predetermined
speed the system will return to ESC "Full Off".
ESC modes may also be affected by drive modes (if
equipped).
WARNING!
 In the ESC "Full Off" mode, the engine torque reduc-
tion and stability features are disabled. Therefore,
enhanced vehicle stability offered by the ESC system
is unavailable. In an emergency evasive maneuver,
the ESC system will not engage to assist in main-
taining stability. ESC "Full Off" mode is intended for
off-highway or off-road use only.
 The Electronic Stability Control (ESC) cannot prevent
the natural laws of physics from acting on the
vehicle, nor can it increase the traction afforded by
prevailing road conditions. ESC cannot prevent all
accidents, including those resulting from excessive
speed in turns, driving on very slippery surfaces, or
hydroplaning. ESC also cannot prevent collisions.
ESC Activation/Malfunction Indicator Light
And ESC OFF Indicator Light
The ESC Activation/Malfunction Indicator
Light in the instrument cluster will come on
when the ignition is placed in the ON/RUN
mode. It should go out with the engine
running. If the ESC Activation/Malfunction
Indicator Light comes on continuously with the engine
running, a malfunction has been detected in the ESC
system. If this light remains on after several ignition
cycles, and the vehicle has been driven several miles (km)
at speeds greater than 30 mph (48 km/h), see an
authorized dealer as soon as possible to have the problem
diagnosed and corrected.
The ESC Activation/Malfunction Indicator Light starts to
flash as soon as the tires lose traction and the ESC system
(Continued)
becomes active. The ESC Activation/Malfunction Indicator
WARNING!
Light also flashes when TCS is active. If the ESC
Activation/Malfunction Indicator Light begins to flash
during acceleration, ease up on the accelerator and apply
as little throttle as possible. Be sure to adapt your speed
and driving to the prevailing road conditions.
The ESC OFF Indicator Light indicates the
customer has elected to have the Electronic
Stability Control (ESC) in a reduced mode.
NOTE:
 The ESC Activation/Malfunction Indicator Light and the
ESC OFF Indicator Light come on momentarily each
time the ignition is placed in the ON position.
 Each time the ignition is placed in the ON position, the
ESC system will be on even if it was turned off previ-
ously.
 The ESC system will make buzzing or clicking sounds
when it is active. This is normal; the sounds will stop
when ESC becomes inactive following the maneuver
that caused the ESC activation.
Hill Descent Control (HDC) — If Equipped
HDC is intended for low speed off-road driving while in
4WD Low. HDC maintains vehicle speed while descending
hills during various driving situations. HDC controls vehicle
speed by actively controlling the brakes.