4WD JEEP WRANGLER 2007 JK / 3.G Owners Manual

•Understeer - when the vehicle is turning less than
appropriate for the steering wheel position.
TheESP/TCS Indicator Lightlocated in the instrument
cluster, starts to flash as soon as the tires lose traction and
the ESP system becomes active. TheESP/TCS Indicator
Lightalso flashes when TCS is active. If theESP/TCS
Indicator Lightbegins 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.WARNING!
ESP (Electronic Stability Program) cannot prevent the
natural laws of physics from acting on the vehicle,
nor can it increase the traction afforded by prevailing
road conditions. ESP cannot prevent accidents, in-
cluding those resulting from excessive speed in
turns, driving on very slippery surfaces, or hydro-
planing. Only a safe, attentive, and skillful driver can
prevent accidents. The capabilities of an ESP-
equipped vehicle must never be exploited in a reck-
less or dangerous manner which could jeopardize the
user’s safety or the safety of others.
The ESP system has 3 available operating modes in 4WD
High Range. The system has 1 operating mode in 4WD
Low Range. 2WD vehicles and 4WD vehicles in 2WD
mode have 2 operating modes.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 111
3

High Range (4WD Models) or 2WD Models
On
This is the normal operating mode for ESP in 4WD high
range and in 2WD vehicles. Whenever the vehicle is
started or the transfer case (if equipped) is shifted from
4WD low range or neutral back to 4WD high range, the
ESP system will be in this mode. This mode should be
used for most all driving situations. ESP should only be
turned to “Partial Off” or “Full Off” for specific reasons
as noted below.
Partial Off
This mode is entered by momentarily depressing the
ESP Control Switch. When inPartial Offmode, the
TCS portion of ESP has been disabled and theESP/TCS
Indicator Lightwill be illuminated. All other stability
features of ESP function normally. This mode is intended
to be used if the vehicle is in deep snow, sand, or gravelconditions and more wheel spin than ESP would nor-
mally allow is required to gain traction. To turn ESP on
again, momentarily depress theESP Control Switch.
This will restore the normal “ESP On” mode of operation.
ESP Control Switch
112 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

NOTE:To improve the vehicle’s traction when driving
with snow chains, or starting off in deep snow, sand, or
gravel, it may be desirable to switch to the “Partial Off”
mode by pressing the ESP switch. Once the situation
requiring ESP to be switched to the “Partial Off” mode is
overcome, turn ESP back on by momentarily depressing
the “ESP Control Switch”. This may be done while the
vehicle is in motion.
ESP Off (4WD High Range Only)
This mode is intended for off-highway or off-road use
when ESP stability features could inhibit vehicle maneu-
verability due to trail conditions. This mode is entered by
depressing and holding the “ESP Control Switch” for 5
seconds when the vehicle is stopped and the engine is
running. In this mode, all ESP and TCS stability features
are turned off except for the “limited slip” feature de-
scribed in the TCS section. After 5 seconds, a chime willsound, theESP/TCS Indicator Lightwill illuminate,
and theESP OFFmessage will appear in the odometer.
Refer to “Compass and Mini-Trip Computer — If
Equipped” in Section 4 of this manual. To turn ESP on
again, momentarily depress theESP Control Switch.
This will restore the normal “ESP On” mode of operation.
NOTE:The ESP system will change to “Partial Off”
mode if the vehicle speed exceeds 40 mph (64 km/h).
After the vehicle speed is reduced below 35 mph (56
km/h), the ESP system will return to “Full Off” mode.
NOTE:The “ESP OFF” message will display and the
audible chime will sound when the gear selector is
placed into the “P” (Park) position from any position
other than “P” (Park), and then moved out of the “P”
(Park) position. This will occur even if the message was
previously cleared.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 113
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WARNING!
With the ESP switched off, the enhanced vehicle
stability offered by ESP and ERM are unavailable. In
an emergency evasive maneuver, the ESP and ERM
systems will not engage to assist in maintaining
stability. The “Full Off” ESP mode is intended for
off-highway or off-road use only.
4WD Low Range
ESP Off
This is the normal operating mode for ESP in 4WD low
range. Whenever the vehicle is started in 4WD low range,
or the transfer case (if equipped) is shifted from 4WD
high range or neutral to 4WD low range, the ESP system
will be in this mode. In 4WD low range, ESP and TCS,except for the “limited slip” feature described in the TCS
section, are turned off until the vehicle reaches a speed of
40 mph (48 km/h). At 40 mph (48 km/h), the normal ESP
stability function returns but TCS remains off. When the
vehicle speed drops below 35 mph (40 km/h), the ESP
system shuts off. ESP is off at low vehicle speeds in 4WD
low range so that it will not interfere with off-road
driving but ESP function returns to provide the stability
feature at speeds above 40 mph (48 km/h). TheESP/
TCS Indicator Lightwill always be illuminated in 4WD
low range when ESP is off.
NOTE:The “ESP OFF” message will display and the
audible chime will sound when the gear selector is
placed into the “P” (Park) position from any position
other than “P” (Park), and then moved out of the “P”
(Park) position. This will occur even if the message was
previously cleared.
114 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

20. 4WD Indicator Light — If Equipped
This light alerts the driver that the vehicle is in
the four-wheel drive mode, and the front and
rear driveshafts are mechanically locked to-
gether forcing the front and rear wheels to
rotate at the same speed.
21. Odometer/Trip Odometer Reset Button
Press this button to change the display from odometer to
either of the two trip odometer settings. Trip A or Trip B
will appear when in the trip odometer mode. Push in and
hold the button for two seconds to reset the trip odometer
to 0 miles or kilometers. The odometer must be in trip
mode to reset.
22. Transmission Range Indicator
This display indicator shows the automatic transmission
gear selection.23. Tire Pressure Monitoring Telltale Light — If
Equipped
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your vehicle
has tires of a different size than the size indicated on the
vehicle placard or tire inflation pressure label, you should
determine the proper tire inflation pressure for those
tires.)
As an added safety feature, your vehicle may be
equipped with a tire pressure monitoring system (TPMS)
that illuminates a low tire pressure telltale when one or
more of your tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illuminates, you
should stop and check your tires as soon as possible, and
inflate them to the proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire to overheat and
206 UNDERSTANDING YOUR INSTRUMENT PANEL

▫Shift Positions........................282
▫Shifting Procedure....................283
Trac-Lok™ Rear Axle — If Equipped.........284
Axle Lock (Tru–Lok™) — Rubicon Models.....285
Rear Axle Lock — 4WD Non-Rubicon Models
(If Equipped)..........................286
Electronic Sway Bar Disconnect — If Equipped . . 287
On-Road Driving Tips...................289
Off-Road Driving Tips...................290
▫When To Use 4L (Low) Range............290
▫Driving Through Water.................291
▫Driving In Snow, Mud And Sand..........292
▫Hill Climbing........................292▫Traction Downhill.....................293
▫After Driving Off-Road.................294
Parking Brake.........................295
Anti-Lock Brake System..................296
Power Steering........................298
Tire Safety Information...................300
▫Tire Markings........................300
▫Tire Identification Number (TIN)..........303
▫Tire Loading And Tire Pressure...........304
Tires — General Information...............308
▫Tire Pressure.........................308
▫Tire Inflation Pressures.................309
▫Tire Pressures For High Speed Operation....311
262 STARTING AND OPERATING

▫Trailer Towing Weights (Maximum Trailer
Weight Ratings)......................335
▫Trailer And Tongue Weight..............338
▫Towing Requirements..................339
▫Towing Tips.........................344Recreational Towing (Behind Motorhome, Etc.) . . 346
▫Towing – 2WD Models.................346
▫Towing – 4WD Models.................346
▫Shifting Out Of Neutral (N)..............347
264 STARTING AND OPERATING

STARTING PROCEDURES
Before starting your vehicle, adjust your seat, adjust both
inside and outside mirrors, and fasten your seat belts.
WARNING!
Never leave children alone in a vehicle. Leaving
children in a vehicle unattended is dangerous for a
number of reasons. A child or others could be seri-
ously or fatally injured. Do not leave the keys in the
ignition. A child could operate power windows,
other controls, or move the vehicle.
Manual Transmission
Apply the parking brake, place the gearshift control lever
in N (Neutral) and depress the clutch pedal before
starting vehicle. This vehicle is equipped with a clutch
interlocking ignition system. It will not start unless the
clutch pedal is pressed to the floor.4WD Models Only
In 4L mode, this vehicle will start regardless of whether
or not the clutch pedal is pressed to the floor. This feature
enhances off-road performance by allowing the vehicle to
start when in 4L without having to depress the clutch
pedal. The “4WD Indicator Light” will illuminate when
the transfer case has been shifted into this mode.
Automatic Transmission
Start the engine with the selector lever in the N (Neutral)
or P (Park) position. Apply the brake before shifting to
any driving range.
Normal Starting
Normal starting of either a cold or a warm engine is
obtained without pumping or depressing the accelerator
pedal. Turn the key to the START position and release
when the engine starts. If the engine fails to start within
10 seconds, turn the key to the OFF position, wait 5
seconds, then repeat the normal starting procedure.
STARTING AND OPERATING 265
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Torque Converter Clutch
A feature designed to improve fuel economy has been
added to the automatic transmission of this vehicle. A
clutch within the torque converter engages automatically
at calibrated speeds. This may result in a slightly differ-
ent feeling or response during normal operation in high
gear. When the vehicle speed drops or during accelera-
tion, the clutch automatically and smoothly disengages.
FOUR–WHEEL DRIVE OPERATION
(COMMAND-TRAC™ OR ROCK-TRAC™) — IF
EQUIPPED
Operating Instructions/Precautions
The transfer case provides four mode positions — two
(rear) wheel drive high range, four wheel drive high
range, neutral, and four wheel drive low range.
4WD Shift Controls
280 STARTING AND OPERATING

This transfer case is intended to be driven in the two
wheel drive (2H) position for normal street and highway
conditions such as hard surfaced roads.
In the events when additional traction is required, the
transfer case 4H and 4L positions can be used to lock the
front and rear driveshafts together and force the front
and rear wheels to rotate at the same speed. This is
accomplished by simply moving the shift lever to these
positions. The 4H and 4L positions are intended for loose,
slippery road surfaces only and not intended for normal
driving. Driving in the 4H and 4L positions on hard
surfaced roads will cause increased tire wear and damage
to the driveline components.
The “4WD Indicator Light” (located in the instrument
cluster) alerts the driver that the vehicle is in four wheel
drive and that the front and rear driveshafts are locked
together. This light illuminates when the transfer case is
shifted into the 4H position.NOTE:Do not attempt to make a shift while only the
front or rear wheels are spinning. The transfer case is not
equipped with a synchronizer and therefore the front and
rear driveshafts speeds must be equal for the shift to take
place. Shifting while only the front or rear wheels are
spinning can cause damage to the transfer case.
When operating your vehicle in 4L, the engine speed is
approximately three times (four times for Rubicon mod-
els) that of the 2H or 4H positions at a given road speed.
Take care not to overspeed the engine.
Proper operation of four wheel drive vehicles depends on
tires of equal size, type, and circumference on each
wheel. Any difference will adversely affect shifting and
cause damage to the transfer case.
Because four wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.
STARTING AND OPERATING 281
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