2006 JEEP COMMANDER 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) and engine
power is reduced 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.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 133
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NOTE:If shift conditions/interlocks are not met, a
“CHECK SHIFT PROCEDURES” message will flash from
the EVIC (Electronic Vehicle Information Center). Refer
to “Electronic Vehicle Information Center (EVIC)” in
Section 4 of this manual. (See page 186 for more
information.)
Quadra-Drive IISystem — If Equipped
The optional Quadra-Drive IISystem features three
torque transfer couplings. The couplings include ELSD
(Electronic Limited Slip Differential) front and rear axles
and Quadra-Trac IItransfer case. The optional ELSD
axles are fully automatic and require no driver input to
operate. Under normal driving conditions the units func-
tion as standard axles balancing torque evenly between
left and right wheels. With a traction difference between
left and right wheels the coupling will sense a speed
difference. As one wheel begins to spin faster than the
other, torque will automatically transfer from the wheel
that has less traction to the wheel that has traction. Whilethe transfer case and axle couplings differ in design, their
operation is similar. Follow the Quadra-Trac IItransfer
case shifting information, preceding this section, for
shifting this system.
PARKING BRAKE
To set the parking brake, pull the lever up as firmly as
possible. When the parking brake is applied with the
ignition ON, the “Brake Warning Light” in the instru-
ment cluster will light.
STARTING AND OPERATING 269
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Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission MoparATF+4 Automatic Transmission Fluid
Transfer Case (3.7L Engines) MoparATF+4 Automatic Transmission Fluid
Transfer Case (4.7L/5.7L Engines) MoparNV 247 Transfer Case Lubricant
Axle Differential (Front-Rear) MoparSynthetic Gear & Axle Lubricant SAE 75W-140 (API-GL5) or
equivalent with friction modifier 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 rec-
ommended brake fluids.
Power Steering Reservoir This system requires the use of MoparHydraulic System Power Steering
Fluid (P/N 05142893AA) or equivalent, which meets DaimlerChrysler Ma-
terial Standard MS-10838.
390 MAINTAINING YOUR VEHICLE

Fluid Leaks............................. 71
Fluid Level Checks
Automatic Transmission...............372,373
Engine Oil........................... 352
Power Steering........................ 361
Fluids, Lubricants and Genuine Parts.......... 389
Fog Lights..........................126,185
Fold and Tumble Rear Seat................. 109
Folding Rear Seat.....................109,113
Four Wheel Drive....................... 264
Operation........................... 264
Systems............................. 264
Four Wheel Drive Operation................ 264
Four-Way Hazard Flasher.................. 330
Freeing A Stuck Vehicle................... 263
Front Axle (Differential)................... 376
Fuel................................. 305
Filler Cap (Gas Cap).................... 309
Filler Door (Gas Cap)................... 309Gasoline............................ 305
Gauge.............................. 184
Materials Added....................... 307
Octane Rating........................ 305
Requirements......................... 388
Tank Capacity........................ 388
Fuel System Caution...................307,310
Fuses................................ 381
Garage Door Opener (HomeLink) ........... 152
Gas Cap (Fuel Filler Cap)...............309,348
Gasoline (Fuel)......................... 305
Gasoline, Reformulated................... 306
Gasoline/Oxygenate Blends................ 306
Gauges
Coolant Temperature.................... 182
Fuel................................ 184
Speedometer......................... 178
Tachometer.......................... 180
INDEX 425
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PolishingandWaxing ..................... 378
Power
Distribution Center..................... 383
Door Locks........................... 20
Mirrors .............................. 81
Outlet (Auxiliary Electrical Outlet).......... 162
Seats............................... 108
Steering..........................274,361
Sunroof............................. 159
Windows............................. 29
Pregnant Women and Seat Belts.............. 41
Preparation for Jacking.................... 334
Pretensioners
Seat Belts............................. 39
Programmable Electronic Features......154,158,189
Programming Transmitters
(Remote Keyless Entry).................154,158
Quadra-Trac........................... 264Radial Ply Tires......................... 293
Radio Broadcast Signals................... 199
Radio Operation...................200,214,232
Radio, Satellite.......................223,226
Radio (Sound Systems).................200,214
Rain Sensitive Wiper System................ 129
Rear Air Conditioning.................... 243
Rear Axle (Differential).................... 376
Rear Cup Holder........................ 164
Rear Heater............................ 243
Rear Liftgate............................ 18
Rear Park Assist System................... 141
Rear Seat, Fold and Tumble................ 109
Rear Seat, Folding....................109,113
Rear Window Defroster................... 233
Rear Window Features.................... 168
Rear Wiper/Washer...................... 168
Rearview Mirrors........................ 78
Reclining Front Seats..................... 106
INDEX 431
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