2010 JEEP WRANGLER differential

4H to 4L or 4L to 4H
With the vehicle rolling at 2 to 3 mph (3 to 5 km/h), shift
an automatic transmission into NEUTRAL (N), or press
the clutch pedal on a manual transmission. While the
vehicle is coasting at 2 to 3 mph (3 to 5 km/h), shift the
transfer case lever firmly to the desired position. Do not
pause with the transfer case in N (Neutral).
NOTE:Shifting into or out of 4L is possible with the
vehicle completely stopped; however, difficulty may oc-
cur due to the mating teeth not being properly aligned.
Several attempts may be required for clutch teeth align-
ment and shift completion to occur. The preferred
method is with the vehicle rolling at 2 to 3 mph (3 to
5 km/h). Avoid attempting to engage or disengage 4L
with the vehicle moving faster than 2 to 3 mph (3 to
5 km/h).WARNING!
Failure to engage a position completely can cause
transfer case damage or loss of power and vehicle
control. You could have an injury accident. 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.5
STARTING AND OPERATING 349

your 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.CAUTION!
•Water ingestion into the axles, transmission, trans-
fer case, engine or vehicle interior can occur if you
drive too fast or through too deep of water. Water
can cause permanent damage to engine, driveline
or other vehicle components, and your brakes will
be less effective once wet and/or muddy.
•This vehicle is capable of crossing through water
at a depth of 30 inches (76 cm) at speeds no greater
than 5 mph (8 km/h). Water ingestion can occur
causing damage to your vehicle.
Before You Cross Any Type of Water
As you approach any type of water, you need to deter-
mine if you can cross it safely and responsibly. If neces-
sary, get out and walk through the water or probe it with
a stick. You need to be sure of its depth, approach angle,
current and bottom condition. Be careful of murky or
364 STARTING AND OPERATING

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) to provide
enhanced acceleration and stability. A feature of the TCS
system 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 ESP are in either the “Partial Off” or “Full Off”
modes. Refer to “ESP (Electronic Stability Program)” in
this section.
Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s braking
capability during emergency braking maneuvers. The
system detects an emergency braking situation by sens-
ing 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 brak-
ing 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.
374 STARTING AND OPERATING

Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission – If
Equipped MOPAR
ATF+4Automatic Transmission Fluid or equivalent licensed
ATF+4 product.
Manual Transmission – If
Equipped MOPAR
Manual Transmission Lubricant or equivalent (meeting the re-
quirements of Chrysler Material Standard MS-9224).
Transfer Case MOPARATF+4Automatic Transmission Fluid or equivalent licensed
ATF+4 product.
Axle Differential (Front) MOPARGear & Axle Lubricant (SAE 80W-90) (API GL-5) or equivalent.
Axle Differential (Rear) 226 RBI (Model 44)- MOPARGear & Axle Lubricant (SAE 80W-90) (API
GL-5) or equivalent. For trailer towing, use MOPAR Synthetic Gear & Axle
Lubricant (SAE 75W-140) or equivalent. Models equipped with Trac-Lok™
require an additive.
Brake Master Cylinder MOPARDOT 3 Brake Fluid, SAE J1703 should be used. If DOT 3, SAE
J1703 brake fluid is not available, then DOT 4 is acceptable. Use only recom-
mended brake fluids.
Power Steering Reservoir MOPAR Power Steering Fluid +4, MOPARATF+4Automatic Transmis-
sion Fluid or equivalent licensed ATF+4 product.
7
MAINTAINING YOUR VEHICLE 503

Fluids, Lubricants and Genuine Parts.......... 502
Fog Light Service ........................ 499
Fog Lights .......................... 138,499
Fold and Tumble Rear Seat ................. 130
Folding Rear Seat ........................ 133
Four Wheel Drive ....................... 345
Shifting ............................. 347
Four Wheel Drive Operation ................ 345
Four-Way Hazard Flasher .................. 440
Front Axle (Differential) ................... 482
Fuel ................................. 411
Filler Cap (Gas Cap) .................... 416
Gasoline ............................ 411
Gauge .............................. 246
Materials Added ....................... 414
Octane Rating ........................ 411
Requirements ......................... 501
Tank Capacity ........................ 501
Fuel System Caution ................... 414,417Fuses
................................ 490
Gas Cap (Fuel Filler Cap) ............416,418,456
Gasoline (Fuel) ......................... 411
Gasoline, Reformulated ................... 412
Gasoline/Oxygenate Blends ................ 412
Gauges Coolant Temperature ................... 251
Fuel ............................... 246
Odometer ........................... 254
Speedometer ......................... 246
Tachometer .......................... 250
Gear Ranges ........................ 336,342
General Information ................. 17,119,411
Glass Cleaning .......................... 486
Gross Axle Weight Rating ...............419,421
Gross Vehicle Weight Rating .............418,421
GVWR ............................... 418
10
INDEX 541

Oil Pressure Light....................... 247
Onboard Diagnostic System ..............456,457
Operator Manual (Owner’s Manual) ............ 6
Outside Rearview Mirrors .................. 87
Overheating, Engine ................... 251,440
Owner’s Manual (Operator Manual) .........6,531
Paint Care ............................. 482
Paint Damage .......................... 482
Panic Alarm ............................ 21
Parking Brake .......................... 369
Passing Light ........................... 138
Pets .................................. 74
Phone, Cellular .......................... 88
Phone, Hands-Free (Uconnect™) .............. 88
Placard, Tire and Loading Information ......... 394
Polishing and Waxing ..................... 483
Power Door Locks ........................... 31 Steering
.......................... 367,368
Windows ............................. 34
Pregnant Women and Seat Belts .............. 49
Preparation for Jacking .................... 443
Pretensioners Seat Belts ............................ 47
Radial Ply Tires ......................... 401
Radio Operation ........................ 317
Radio, Satellite (Uconnect studios)........... 311
Rear Axle (Differential) .................... 482
Rear Swing Gate ......................... 36
Rear Window Defroster ................... 239
Rear Window Features .................... 238
Rear Wiper/Washer ...................... 238
Rearview Mirrors ........................ 86
Recorder, Event Data ...................... 60
Recreational Towing ...................... 435
Shifting into Transfer Case Neutral (N) ....... 436
546 INDEX