2014 JEEP WRANGLER differential

WARNING!
Failure to engage a transfer case position completely
can cause transfer case damage or loss of power and
vehicle control. You could have a collision. Do not
drive the vehicle unless the transfer case is fully
engaged.
TRAC-LOK® REAR AXLE — IF EQUIPPED
The Trac-Lok® rear axle provides a constant driving force
to both rear wheels and reduces wheel spin caused by the
loss of traction at one driving wheel. If traction differs
between the two rear wheels, the differential automati-
cally proportions the usable torque by providing more
torque to the wheel that has traction.Trac-Lok® is especially helpful during slippery driving
conditions. With both rear wheels on a slippery surface, a
slight application of the accelerator will supply maxi-
mum traction.
WARNING!
On vehicles equipped with a limited-slip differen-
tial, never run the engine with one rear wheel off the
ground. The vehicle may drive through the rear
wheel remaining on the ground and cause you to lose
control of your vehicle.
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STARTING AND OPERATING 443

WARNING!
If the engine stalls or you lose headway or cannot
make it to the top of a steep hill or grade, never
attempt to turn around. To do so may result in
tipping and rolling the vehicle, which may result in
severe injury. Always back carefully straight down a
hill in REVERSE. Never back down a hill in NEU-
TRAL using only the vehicle brakes. Never drive
diagonally across a hill, always drive straight up or
down.
Driving Through Water
Extreme care should be taken crossing any type of water.
Water crossings should be avoided, if possible, and only
be attempted when necessary in a safe, responsible
manner. You should only drive through areas which are
designated and approved. You should tread lightly and
avoid damage to the environment. You should knowyour vehicle’s abilities and be able to recover it if
something goes wrong. You should never stop or shut a
vehicle off when crossing deep water unless you ingested
water into the engine air intake. If the engine stalls, do
not attempt to restart it. Determine if it has ingested
water first. The key to any crossing is low and slow. Shift
into first gear (manual transmission), or DRIVE (auto-
matic transmission), with the transfer case in the 4L
(Low) position and proceed very slowly with a constant
slow speed {3 to 5 mph (5 to 8 km/h) maximum} and
light throttle. Keep the vehicle moving; do not try to
accelerate through the crossing. After crossing any water
higher than the bottom of the axle differentials, you
should inspect all of the vehicle fluids for signs of water
ingestion.
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WARNING!(Continued)
very slippery surfaces, or hydroplaning. The capa-
bilities of an ABS-equipped vehicle must never be
exploited in a reckless or dangerous manner which
could jeopardize the user’s safety or the safety of
others.
Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability.
A feature of the TCS system, Brake Limited Differential
(BLD), functions similar to a limited slip differential and
controls the wheel spin across a driven axle. If one wheel
on a driven axle is spinning faster than the other, the
system will apply the brake of the spinning wheel. This will allow more engine torque to be applied to the wheel
that is not spinning. This feature remains active even if
TCS and ESC are in either the “Partial Off” or “Full Off”
modes. Refer to “Electronic Stability Control (ESC)” in
this section for further information.
Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s braking
capability during emergency braking maneuvers. The sys-
tem detects an emergency braking situation by sensing the
rate and amount of brake application and then applies
optimum pressure to the brakes. This can help reduce
braking distances. The BAS complements the anti-lock
brake system (ABS). Applying the brakes very quickly
results in the best BAS assistance. To receive the benefit of
the system, you must apply continuous braking pressure
during the stopping sequence. Do not reduce brake pedal
pressure unless braking is no longer desired. Once the
brake pedal is released, the BAS is deactivated.
468 STARTING AND OPERATING

In the ESC “Full Off” mode, the engine torque reduction
and stability features are disabled. Therefore, the en-
hanced vehicle stability offered by ESC is unavailable. In
an emergency evasive maneuver, the ESC system will not
engage to assist in maintaining stability. “ESC Off” mode
is intended for off-highway or off-road use only.When in ESC Off mode, ESC and TCS, except for the
Brake Limited Differential (BLD) feature described in the
TCS section, are turned off until the vehicle reaches a
speed of 40 mph (64 km/h). For speeds at or exceeding
40 mph (64 km/h) the ESC goes into partial off. When the
vehicle speed drops below 35 mph (56 km/h), the ESC
system goes back to off. To turn ESC on again, momen-
tarily press the ESC OFF switch. This will restore normal
“ESC On” mode of operation. The
ESC Off Indicator
Light” will always be illuminated when ESC is off and
partial off.
WARNING!
With the ESC in Full Offmode, the engine torque
reduction and stability features offered by ESC and
ERM are disabled. In an emergency evasive maneu-
ver, the ESC and ERM systems will not engage to
assist in maintaining stability. The “Full Off” ESC
mode is intended for off-road use only.
ESC OFF Switch
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4L Range (4WD Models)
ESC Off
This is the normal operating mode for ESC 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 ESC system will be in this
mode. In 4L range, ESC and TCS, except for the Brake
Limited Differential (BLD) feature described in the TCS
section, are turned off until the vehicle reaches a speed of
40 mph (64 km/h). For speeds at or exceeding 40 mph
(64 km/h) the ESC goes into partial off. When the vehicle
speed drops below 35 mph (56 km/h), the ESC system
shuts off. The ESC is off at low vehicle speeds in 4L range
so that it will not interfere with off-road driving, but the
ESC function returns to provide the stability feature at
speeds above 40 mph (64 km/h). The “ESC OFF Indicator
Light” will always be illuminated in 4L range when ESC
is off.NOTE:
The “ESC 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.
WARNING!
In the ESC Full Offmode, the engine torque reduc-
tion and stability features are disabled. In an emer-
gency evasive maneuver, the ESC system will not
engage to assist in maintaining stability. ESC Off
mode is intended for off-highway or off-road use
only.
478 STARTING AND OPERATING

Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission – If
Equipped Use only ATF+4® Automatic Transmission Fluid. Failure to use ATF+4®
fluid may affect the function or performance of your transmission. We
recommend MOPAR® ATF+4® fluid.
Manual Transmission – If Equipped We recommend you use MOPAR® Manual Transmission Lubricant meeting the requirements of Chrysler Material Standard MS-9224.
Transfer Case We recommend you use MOPAR® ATF+4® Automatic Transmission Fluid.
Axle Differential (Front) We recommend you use MOPAR® Gear & Axle Lubricant (SAE 80W-90)
(API GL-5).
Axle Differential (Rear) 226 RBI (Model 44)– We recommend you use MOPAR® Gear & Axle
Lubricant (SAE 80W-90) (API GL-5) or equivalent. For trailer towing, use
MOPAR® Synthetic Gear & Axle Lubricant (SAE 75W-140). Models
equipped with Trac-Lok™ require an additive.
Brake Master Cylinder We recommend you use MOPAR® DOT 3 Brake Fluid, SAE J1703.
If DOT 3, SAE J1703 brake fluid is not available, then DOT 4 is acceptable.
Power Steering Reservoir We recommend you use MOPAR® Power Steering Fluid +4,
MOPAR® ATF+4® Automatic Transmission Fluid.
634 MAINTAINING YOUR VEHICLE

Four Wheel Drive Operation.................439
Freeing A Stuck Vehicle .....................570
Front Axle (Differential) .....................611
Fuel .................................. .521
Adding ............................. .526
Additives ............................ .524
Clean Air ............................ .522
Ethanol ............................. .522
Filler Cap (Gas Cap) .....................526
Gasoline ............................. .521
Gauge .............................. .308
Materials Added ....................... .524
Methanol ............................ .522
Octane Rating ......................... .521
Requirements ......................... .521
Tank Capacity ......................... .632
Fueling ............................... .526
Fuses ................................. .619Gas Cap (Fuel Filler Cap)
...................526
Gasoline, Clean Air ....................... .522
Gasoline (Fuel) .......................... .521
Gasoline, Reformulated .....................522
Gauges Coolant Temperature .....................313
Fuel ................................ .308
Odometer ............................ .316
Speedometer ......................... .308
Tachometer ........................... .312
Gear Ranges ............................ .424
Gear Select Lever Override ..................572
General Information ...................... .149
Glass Cleaning .......................... .615
Gross Axle Weight Rating ...................531
Gross Vehicle Weight Rating ..................530
GVWR ................................ .528
Hands-Fr

ee Phone (Uconnect®) ...............118
662 INDEX

Inverter............................. .189
Mirrors ..............................117
Steering ............................. .461
Windows ..............................45
Pregnant Women and Seat Belts ................65
Preparation for Jacking .....................561
Pretensioners Seat Belts ..............................63
Programmable Electronic Features .............339
Radial Ply Tires ......................... .498
Radiator Cap (Coolant Pressure Cap) ...........601
Radio Operation ......................... .343
Radio (Sound Systems) .....................343
Rear Axle (Differential) .....................611
Rear Swing Gate ...........................48
Rear Window Defroster .....................300
Rear Window Features .....................300
Rear Wiper/Washer ....................... .300Recorder, Event Data
.......................78
Recreational Towing ...................... .549
Shifting into Transfer Case Neutral (N) ........551
Shifting out of Transfer Case Neutral (N) ......552
Reformulated Gasoline .....................522
Refrigerant ............................. .590
Release, Hood ........................... .169
Reminder, Seat Belt .........................64
Remote Control Door Locks ............................24
Starting System .........................30
Remote Keyless Entry (RKE) ..................24
FCC General Information ..................30
Remote Sound System (Radio) Controls .........397
Remote Starting System ......................30
Replacement Bulbs ....................... .627
Replacement Keys .........................19
Replacement Parts ........................ .582
Replacement Tires ........................ .505
668 INDEX