4WD JEEP WRANGLER 2010 JK / 3.G Owners Manual

18. Temperature Gauge
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily.
The gauge pointer will likely indicate a higher tempera-
ture when driving in hot weather, up mountain grades,
or when towing a trailer. It should not be allowed to
exceed the upper limits of the normal operating range.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If temperature gauge reads “H”
pull over and stop the vehicle. Idle the vehicle with
the air conditioner turned off until the pointer drops
back into the normal range. If the pointer remains on
the “H” and you hear continuous chimes, turn the
engine off immediately, and call an authorized deal-
ership for service.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized dealer-
ship for service if your vehicle overheats. If you
decide to look under the hood yourself, see “Main-
taining Your Vehicle”. Follow the warnings under the
Cooling System Pressure Cap paragraph.
19. Cruise Indicator This indicator shows when the electronic speed
control system is turned on.
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.
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UNDERSTANDING YOUR INSTRUMENT PANEL 251

STARTING PROCEDURES
Before starting your vehicle, adjust your seat, adjust both
inside and outside mirrors, and fasten your seat belts.
WARNING!
Never leave children in the vehicle alone. Leaving
unintended children in a vehicle is dangerous for a
number of reasons. The child or others could be
seriously or fatally injured. The child could operate
power windows, other controls or move the vehicle.
Manual Transmission – If Equipped
Apply the parking brake, place the shift lever in NEU-
TRAL, and press the clutch pedal before starting the
vehicle. This vehicle is equipped with a clutch interlock-
ing ignition system. It will not start unless the clutch
pedal is pressed to the floor.Four-Wheel Drive 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 press the clutch pedal.
The “4WD Indicator Light” will illuminate when the
transfer case has been shifted into this mode.
Automatic Transmission – If Equipped
Start the vehicle with the shift lever in the PARK position
(vehicle can also be started in NEUTRAL). Apply the
brake before shifting to any driving range.
Normal Starting
NOTE:
Normal starting of either a cold or a warm
engine is obtained without pumping or pressing the
accelerator pedal.
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STARTING AND OPERATING 331

•4L (Four-wheel drive low range)
The transfer case is intended to be driven in the 2H
position for normal street and highway conditions such
as hard-surfaced roads. In the event that additional traction is required, the
transfer case 4H and 4L positions can be used to lock the
front and rear driveshafts together, forcing the front and
rear wheels to rotate at the same speed. This is accom-
plished by simply moving the shift lever to one of 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 the front and rear driveshafts are locked
together. The light will illuminate when the transfer case
is shifted into the 4H position.
Four-Wheel Drive Shift Controls
346 STARTING AND OPERATING

4H Position
This range locks the front and rear driveshafts together,
forcing the front and rear wheels to rotate at the same
speed. This range (4H) provides additional traction for
loose, slippery road surfaces and should not be used on
wet or dry pavement.
The “4WD Indicator Light” (located in the instrument
cluster) will illuminate when the transfer case is shifted
into the 4H position.
N (Neutral) Position
This range disengages the front and rear driveshafts from
the powertrain. It is to be used for flat towing behind
another vehicle. Refer to “Recreational Towing” in “Start-
ing and Operating” for further information.
4L Position
This range locks the front and rear driveshafts together,
forcing the front and rear wheels to rotate at the samespeed. This range (4L) provides additional traction and
maximum pulling power for loose, slippery road surfaces
only. Do not exceed 25 mph (40 km/h).
The “4WD Indicator Light” (located in the instrument
cluster) will illuminate when the transfer case is shifted
into the 4L position.
Shifting Procedure
2H to 4H or 4H to 2H
Shifting between 2H and 4H can be made with the
vehicle stopped or in motion. If the vehicle is in motion,
shifts can be made up to 50 mph (80 km/h). With the
vehicle in motion, the transfer case will engage/
disengage faster if you momentarily release the accelera-
tor pedal after completing the shift. Apply a constant
force when shifting the transfer case lever.
348 STARTING AND OPERATING

range. Two-wheel drive vehicles and four-wheel drive
vehicles in 2H range have two operating modes.
4H Range (4WD Models) or 2WD Models
On
This is the normal operating mode for ESP in 4H and
2WD vehicles. Whenever the vehicle is started or the
transfer case (if equipped) is shifted from 4L range or
NEUTRAL back to 4H range, the ESP system will be in
this mode. This mode should be used for most all driving
situations. The 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 pressing the ESP
OFF switch. When inPartial Offmode, the TCS portion
of ESP has been disabled and the “ESP/TCS Indicator
Light” will 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 gravel conditions and more wheel spin than ESP would normally allow is
required to gain traction. To turn ESP on again, momen-
tarily press the ESP OFF switch. This will restore the
normal “ESP On” mode of operation.
NOTE:
To improve the vehicle’s traction when driving
with snow chains, or starting off in deep snow, sand, or
ESP OFF Switch
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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-road use only.
4L Range (4WD Models)
ESP Off
This is the normal operating mode for ESP in 4L range.
Whenever the vehicle is started in 4L range, or the
transfer case (if equipped) is shifted from 4H range or
NEUTRAL to 4L range, the ESP system will be in this
mode. In 4L range, ESP and TCS, except for the “limitedslip” 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.
The ESP is off at low vehicle speeds in 4L range so that it
will not interfere with off-road driving, but the ESP
function returns to provide the stability feature at speeds
above 40 mph (48 km/h). The “ESP/TCS Indicator
Light” will always be illuminated in 4L range when ESP
is off.
NOTE:
The “ESP OFF” message will display and the
audible chime will sound when the shift lever is placed in
the PARK position from any position other than PARK,
and then moved out of the PARK position. This will
occur even if the message was previously cleared.
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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” mode is intended for off-
road use only.
Disabling ESP for Modified Vehicles (4WD Models
Only)
Vehicles modified with larger tires and/or suspension
lifts may experience early ESP activations as compared to
a non-modified production vehicle depending on lift
size, tire size, suspension changes and/or driving habits.
If early ESP activations are experienced while driving a
modified vehicle, the additional ability to permanently
turn off ESP is available. A steering wheel/ESP button
maneuver must be performed to permanently disableESP and defeat the functionality of the ESP switch.
Repeating the procedure will return the system to normal
ESP operation and restore ESP switch functionality al-
lowing ESP “Partial” or “Off” modes.
WARNING!
With ESP in the permanent disable mode, enhanced
vehicle stability offered by the ESP and ERM sys-
tems is unavailable. In an emergency evasive maneu-
ver, the ESP and ERM systems will not engage to
assist in maintaining stability. This disabled mode is
intended for off-highway or off-road use only. Ve-
hicle modifications requiring the owner to configure
the vehicle in the ESP disabled mode, will seriously
affect the vehicle’s roadworthiness and safety and
may lead to loss of control and/or accident resulting
in possible serious or fatal injuries.
384 STARTING AND OPERATING

Engine/
Transmission Axle Model GCWR (Gross
Combined
Wt. Rating) Frontal Area Max. GTW
(Gross TrailerWt.) Max. Trailer
Tongue Wt. (See Note)
3.8L/Manual 3.21 Two–Door X Model (4WD)5,049 lbs
(2 290 kg) 25 sq ft
(2.32 sq m) 1,000 lbs
(453 kg) 100 lbs (45 kg)
3.8L/Manual 3.73 Two–Door X Model (4WD)6,049 lbs
(2 744 kg) 25 sq ft
(2.32 sq m) 2,000 lbs
(907 kg) 200 lbs (91 kg)
3.8L/
Automatic 3.73 Two–Door X Model
(4WD) 6,051 lbs
(2 745 kg) 25 sq ft
(2.32 sq m) 2,000 lbs
(907 kg) 200 lbs (91 kg)
3.8L/Manual 3.21 Two–Door Sahara Model (4WD)5,231 lbs
(2 373 kg) 25 sq ft
(2.32 sq m) 1,000 lbs
(453 kg) 100 lbs (45 kg)
3.8L/Manual 3.73 Two–Door Sahara Model (4WD)6,231 lbs
(2 826 kg) 25 sq ft
(2.32 sq m) 2,000 lbs
(907 kg) 200 lbs (91 kg)
3.8L/
Automatic 3.73 Two–Door Sahara
Model (4WD) 6,233 lbs
(2 827 kg) 25 sq ft
(2.32 sq m) 2,000 lbs
(907 kg) 200 lbs (91 kg)
3.8L/Manual 4.10 2–Door Rubicon Model (4WD)6,365 lbs
(2 887 kg) 25 sq ft
(2.32 sq m) 2,000 lbs
(907 kg) 200 lbs (91 kg)
3.8L/
Automatic 4.10 Two–Door Rubicon
Model (4WD) 6,366 lbs
(2 887 kg) 25 sq ft
(2.32 sq m) 2,000 lbs
(907 kg) 200 lbs (91 kg)
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Engine/
Transmission Axle Model GCWR (Gross
Combined
Wt. Rating) Frontal Area Max. GTW
(Gross TrailerWt.) Max. Trailer
Tongue Wt. (See Note)
3.8L/
Automatic 3.73 Four–Door X
Model (2WD) 7,734 lbs
(3 508 kg) 32 sq ft
(2.97 sq m) 3,500 lbs
(1 587 kg) 350 lbs
(159 kg)
3.8L/
Automatic 3.73 Four–Door Sahara
Model (2WD) 7,893 lbs
(3 580 kg) 32 sq ft
(2.97 sq m) 3,500 lbs
(1 587 kg) 350 lbs
(159 kg)
3.8L/Manual 3.21 Four–Door X Model (4WD)5,431 lbs
(2 463 kg) 32 sq ft
(2.97 sq m) 1,000 lbs
(453 kg) 100 lbs (45 kg)
3.8L/Manual 3.73 Four–Door X Model (4WD)7,931 lbs
(3 597 kg) 32 sq ft
(2.97 sq m) 3,500 lbs
(1 587 kg) 350 lbs
(159 kg)
3.8L/
Automatic 3.73 Four–Door X
Model (4WD) 7,932 lbs
(3 598 kg) 32 sq ft
(2.97 sq m) 3,500 lbs
(1 587 kg) 350 lbs
(159 kg)
3.8L/Manual 3.21 Four–Door Sahara Model (4WD)5,625 lbs
(2 551 kg) 32 sq ft
(2.97 sq m) 1,000 lbs
(453 kg) 100 lbs (45 kg)
3.8L/Manual 3.73 Four–Door Sahara Model (4WD)8,125 lbs
(3 685 kg) 32 sq ft
(2.97 sq m) 3,500 lbs
(1 587 kg) 350 lbs
(159 kg)
3.8L/
Automatic 3.73 Four–Door Sahara
Model (4WD) 8,127 lbs
(3 686 kg) 32 sq ft
(2.97 sq m) 3,500 lbs
(1 587 kg) 350 lbs
(159 kg)
426 STARTING AND OPERATING

Engine/
Transmission Axle Model GCWR (Gross
Combined
Wt. Rating) Frontal Area Max. GTW
(Gross TrailerWt.) Max. Trailer
Tongue Wt. (See Note)
3.8L/Manual 4.10 Four–Door Rubicon Model (4WD)8,248 lbs
(3 741 kg) 32 sq ft
(2.97 sq m) 3,500 lbs
(1 587 kg) 350 lbs
(159 kg)
3.8L/
Automatic 4.10 Four–Door Rubicon
Model (4WD) 8,249 lbs
(3 742 kg) 32 sq ft
(2.97 sq m) 3,500 lbs
(1 587 kg) 350 lbs
(159 kg)
Refer to local laws for maximum trailer towing speeds.
NOTE: The trailer tongue weight must be considered as part of the combined weight of occupants and
cargo, and should never exceed the weight referenced on the Tire and Loading Information placard. Refer to
“Tire Safety Information” in “Starting and Operating” for further information.
Trailer and Trailer Tongue Weight
Always load a trailer with 60% to 65% of the weight in
the front of the trailer. This places 10% to 15% of the
Gross Trailer Weight (GTW) on the tow hitch of your
vehicle. Loads balanced over the wheels or heavier in the
rear can cause the trailer to sway severelyside-to-side
which will cause loss of control of vehicle and trailer.
Failure to load trailers heavier in front is the cause of many trailer accidents. Never exceed the maximum
tongue weight stamped on your trailer hitch.
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STARTING AND OPERATING 427