Page 249 of 688
WARNING!
There may be situations where the Hill Start Assist
(HSA) will not activate and slight rolling may occur,
such as on minor hills or with a loaded vehicle, or
while pulling a trailer. HSA is not a substitute for
active driving involvement. It is always the driver ’s
responsibility to be attentive to distance to other
vehicles, people, and objects, and most importantly
brake operation to ensure safe operation of the ve-
hicle under all road conditions. Your complete atten-
tion is always required while driving to maintain
safe control of your vehicle. Failure to follow these
warnings can result in a collision or serious personal
injury.
Hill Descent Control (HDC) — If Equipped
HDC is intended for low speed off road driving while in
4WD Low Range. HDC maintains vehicle speed while
descending hills during various driving situations. HDC
controls vehicle speed by actively controlling the brakes.
Hill Descent Control (Trailhawk)
6
SAFETY 247
Page 250 of 688

HDC has three states:
1. Off (feature is not enabled and will not activate).
2. Enabled (feature is enabled and ready but activation
conditions are not met, or driver is actively overriding
with brake or throttle application).
3. Active (feature is enabled and actively controlling
vehicle speed).
Enabling HDC
HDC is enabled by pushing the HDC switch, but the
following conditions must also be met to enable HDC:
•Driveline is in 4WD Low Range.
•Vehicle speed is below 7.5 mph (12 km/h).
•Electric Park Brake (EPB) is released.
•Driver door is closed.Activating HDC
Once HDC is enabled, it will activate automatically if
driven down a grade of sufficient magnitude (greater
than approximately 8%). The set speed for HDC is
selectable by the driver and can be adjusted using brake
and throttle input.
Driver Override:
The driver may override HDC activation with throttle or
brake application at anytime.
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 7.5 mph (12 km/h) but remains
below 25 mph (40 km/h).
248 SAFETY
Page 251 of 688

•Vehicle is on a downhill grade of insufficient magni-
tude (less than approximately 8%), 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.
•The driveline is shifted out of 4WD Low Range.
•Driver door opens.
•The vehicle is driven greater than 25 mph (40 km/h)
(HDC exits immediately.)Feedback To The Driver:
The instrument cluster has an HDC icon and the HDC
switch has an LED which offer feedback to the driver
about the state HDC is in.
•The cluster icon and switch lamp will illuminate and
remain solid when HDC is enabled or activated. This is
the normal operating condition for HDC.
•The switch lamp will flash for several seconds then
extinguish when the driver pushes the HDC switch
when enable conditions have not been met.
The Hill Descent Switch is located within the Selec-
Terrain knob in the upper right position.
WARNING!
HDC is only intended to assist the driver in control-
ling vehicle speed when descending hills. The driver
must remain attentive to the driving conditions and
is responsible for maintaining a safe vehicle speed.
6
SAFETY 249
Page 254 of 688

ESC On – Two Wheel Drive Vehicles And Four Wheel
Drive Vehicles In 2WD And 4WD High Range
This is the normal operating mode for ESC when oper-
ating a two-wheel drive vehicle. It is also the normal
mode for operating a four-wheel drive vehicle in 2WD or
4WD HIGH range. The ESC system will be in “ESC On”
mode whenever the vehicle is started or the power
transfer unit (if equipped) is shifted out of 4WD LOW
range. This mode should be used for most driving
situations. ESC should only be turned to “Partial Off” or
“Full Off” for specific reasons as noted. Refer to “Partial
Off” and to “Full Off” for additional information.
NOTE:It is recommended to select the modePartial Off
orFull Offonly for specific reasons.Partial Off – Two Wheel Drive Vehicles And Four
Wheel Drive Vehicles In 2WD And 4WD High Range
The “Partial Off” mode is intended for driving in deep
snow, sand, or gravel. This mode raises the threshold for
TCS and ESC activation, which allows for more wheel
spin than what ESC normally allows.
ESC OFF Button
252 SAFETY
Page 256 of 688

Full Off – Four-Wheel Drive Vehicles In 4WD High
And 4WD Low Range
The “Full Off” mode is intended for off-highway and
off-road use when ESC stability features could inhibit
vehicle maneuverability due to trail conditions. The “ESC
Off” button is located in the lower switch bank above the
climate control panel. To enter “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, the ESC Off indicator light will illuminate and
an “ESC Off” message will appear in the odometer.
In this mode, ESC and TCS are turned off (except for the
“limited slip” feature described in the TCS section) until
the vehicle reaches a speed of 40 mph (64 km/h). At
speeds over 40 mph (64 km/h), the system automatically
switches to “Partial Off” mode, described above. When
the vehicle speed returns to less than 35 mph (56 km/h),
the ESC system will return to “Full Off” mode. The ESCOFF indicator light is always illuminated when ESC is
off. To turn ESC on again, momentarily push the “ESC
Off” button. This will restore the normal “ESC On” mode
of operation.
NOTE:With the ESC switched off, the enhanced vehicle
stability offered by ESC is unavailable. In an emergency
evasive maneuver, the ESC system will not engage to
assist in maintaining stability. “Full Off” mode is only
intended for off-highway or off-road use.
NOTE:
•“Full Off” is the only operating mode for ESC in 4WD
LOW range. The ESC system will be in this mode
whenever the vehicle is started in 4WD LOW range or
the power transfer unit is shifted into 4WD LOW
range.
254 SAFETY
Page 257 of 688

•The “ESC OFF” message will display and a chime will
sound when the shift lever is moved from any position
to the PARK position and then moved out of the PARK
position. This will occur even if the message was
cleared previously.
Selec-Terrain — If Equipped
On models equipped with Selec-Terrain, the activation of
some driving modes provide partial off or full off of some
active safety systems in order to optimize performance in
specific modes.
Partial or full off of the active safety systems will be
indicated by a light in the instrument cluster.
InSANDandMUDthe active safety systems are
partially disabled and put in place to ensure maximum
performance in the specific mode of operation. However,
you can reactivate them completely at any time by
pushing the button.NOTE:In 4WD LOW, the active safety systems are
completely bypassed in order to ensure maximum off-
road performance.
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 switch is turned to the ON
position. 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/kilometers at
speeds greater than 30 mph (48 km/h), see your autho-
rized dealer as soon as possible to have the problem
diagnosed and corrected.
6
SAFETY 255
Page 320 of 688

▫Transmission Limp Home Mode...........349
▫Key Ignition Park Interlock...............350
▫Brake/Transmission Shift Interlock System. . . .350
SPEED CONTROL — IF EQUIPPED.........351
▫Activation...........................352
▫Setting A Desired Speed.................352
▫Deactivation.........................353
▫Resume Speed........................353
▫Varying The Speed.....................353
▫Accelerating For Passing................355
FOUR WHEEL DRIVE — JEEP ACTIVE DRIVE
(4WD) AND JEEP ACTIVE DRIVE LOW
(4WD LOW)...........................355
▫Four Wheel Drive (4x4).................356SELEC-TERRAIN.......................358
▫Mode Selection Guide..................358
FORWARD COLLISION WARNING (FCW)
WITH MITIGATION — IF EQUIPPED.......360
▫Forward Collision Warning (FCW) With
Mitigation Operation — If Equipped.......360
▫Turning FCW ON Or OFF...............363
▫Changing FCW Sensitivity...............364
▫FCW Limited Warning..................364
▫Service FCW Warning..................365
▫Precautions While Driving With FCW.......366
▫General Information...................370
LANESENSE — IF EQUIPPED.............370
▫LaneSense Operation...................370
318 STARTING AND OPERATING
Page 322 of 688
ON-ROAD DRIVING TIPS................411
OFF-ROAD DRIVING TIPS................412
▫When To Use 4WD LOW Range...........412
▫Driving Through Water.................412
▫Driving In Snow, Mud And Sand..........413
▫Hill Climbing........................414
▫Traction Downhill.....................415
▫After Driving Off-Road.................415
POWER STEERING.....................416
TRAILER TOWING.....................417▫Common Towing Definitions.............417
▫Trailer Hitch Classification...............420
▫Trailer Towing Weights
(Maximum Trailer Weight Ratings).........421
▫Trailer And Tongue Weight..............422
▫Towing Requirements..................423
▫Towing Tips.........................428
RECREATIONAL TOWING................430
▫Towing This Vehicle Behind Another Vehicle . .430
▫Recreational Towing....................431
320 STARTING AND OPERATING