2007 JEEP WRANGLER differential

TCS (Traction Control System)
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.
BAS (Brake Assist System)
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.
108 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

NOTE:Pausing in transfer case N (Neutral) in vehicles
equipped with an automatic transmission may require
shutting the engine OFF to avoid gear clash while
completing the shift. If difficulty occurs, shift the auto-
matic transmission to N (Neutral), hold foot on brake,
and turn the engine OFF. Make shift to desired mode.
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
automatically proportions the usable torque by providing
more torque to the wheel that has traction.
284 STARTING AND OPERATING

Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission MoparATF+4 Automatic Transmission Fluid
Manual Transmission MoparManual Transmission Lubricant or equivalent (meeting the require-
ments of DaimlerChrysler Material Standard MS-9224)
Transfer Case MoparATF+4 Automatic Transmission Fluid or equivalent.
Axle Differential (Front) MoparGear & Axle Lubricant (SAE 80W-90) (API GL-5) or equivalent.
Axle Differential (Rear)198 RBI (Model 35) and 226 RBI (Model 44)- MoparGear & Axle Lubri-
cant (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 MoparATF+4 Automatic Transmission Fluid
414 MAINTAINING YOUR VEHICLE

Turn Signal.....................203,410,411
Flooded Engine Starting................... 266
Fluid Capacities......................... 412
Fluid Level Checks...................... 392
Automatic Transmission................. 388
Engine Oil........................... 369
Manual Transmission................... 391
Power Steering........................ 377
Fluids, Lubricants and Genuine Parts.......... 413
Fog Light Service........................ 410
Fog Lights..........................100,410
Fold and Tumble Rear Seat.................. 90
Folding Rear Seat........................ 93
Folding Windshield...................... 187
Four Wheel Drive....................... 280
Shifting............................. 282
Four Wheel Drive Operation................ 280
Four-Way Hazard Flasher.................. 350
Front Axle (Differential)................... 392Fuel................................. 321
Filler Cap (Gas Cap).................... 325
Filter............................... 375
Gasoline............................ 321
Gauge.............................. 202
Materials Added....................... 323
Octane Rating........................ 321
Requirements......................... 412
Tank Capacity........................ 412
Fuel System Caution................324,326,327
Fuses................................ 400
Gas Cap (Fuel Filler Cap)...............325,366
Gasoline (Fuel)......................... 321
Gasoline, Reformulated................... 322
Gasoline/Oxygenate Blends................ 322
Gauges
Coolant Temperature.................... 205
Fuel................................ 202
INDEX 455
10

Radio, Navigation....................... 245
Radio Operation........................ 252
Radio, Satellite.......................246,247
Rear Axle (Differential).................... 392
Rear Swing Gate......................... 34
Rear Window Defroster................... 195
Rear Window Features.................... 193
Rear Wiper/Washer...................... 193
Rearview Mirrors........................ 85
Recorder, Event Data...................... 62
Recreational Towing...................... 346
Shifting into Transfer Case Neutral (N)....... 346
Shifting out of Transfer Case Neutral (N)..... 347
Reformulated Gasoline.................... 322
Refrigerant............................ 377
Release, Hood........................... 96
Reminder, Lights On..................... 100
Reminder, Seat Belt....................... 45Remote Control
Door Locks........................... 20
Remote Keyless Entry (RKE)................. 20
Replacement Bulbs....................... 408
Replacement Parts....................... 368
Replacement Tires....................... 314
Reporting Safety Defects................... 443
Restraint, Head.......................... 90
Restraints, Child.......................64,69
Restraints, Occupant...................... 36
Rotation, Tires.......................... 316
Safety Checks Inside Vehicle................. 79
Safety Checks Outside Vehicle............... 80
Safety Defects, Reporting.................. 443
Safety Information, Tire................... 300
Safety Tips............................. 78
Satellite Radio.......................246,247
INDEX 461
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