2006 JEEP LIBERTY ECU

ONLY the correct type thermostat. Other designs may
result in unsatisfactory cooling performance, poor gas
mileage, and increased emissions.
Hoses and Vacuum/Vapor Harnesses
Inspect surfaces of hoses and nylon tubing for evidence
of heat and mechanical damage. Hard or soft spots,
brittle rubber, cracking, tears, cuts, abrasions, and exces-
sive swelling indicate deterioration of the rubber.
Pay particular attention to the hoses nearest to high heat
sources such as the exhaust manifold. Inspect hose rout-
ing to be sure hoses do not touch any heat source or
moving component that may cause heat damage or
mechanical wear.
Insure nylon tubing in these areas has not melted or
collapsed. Inspect all hose connections such as clamps
and couplings to make sure they are secure and no leaks are present. Components should be replaced immedi-
ately if there is any evidence of degradation that could
cause failure.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically.
Refer to the appropriate “Maintenance Schedule” in
Section 8 for suggested service intervals.
WARNING!
Riding the brakes can lead to brake failure and
possibly an accident. Driving with your foot resting
or riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You wouldn’t have your full
braking capacity in an emergency.
MAINTAINING YOUR VEHICLE 337
7

Brake and Power Steering System Hoses
When servicing the vehicle for scheduled maintenance,
inspect surface of hoses for evidence of heat and me-
chanical damage. Hard and brittle rubber, cracking, tears,
cuts, abrasion, and excessive swelling suggest deteriora-
tion of the rubber. Particular attention should be made to
examining those hose surfaces nearest to high heat
sources, such as the exhaust manifold.
Inspect all hose clamps and couplings to make sure they
are secure and no leaks are present.
NOTE: Often fluids such as oil, power steering fluid,
and brake fluid are used during assembly plant opera-
tions to ease the assembly of hoses to couplings. There-
fore, oil wetness at the hose-coupling area is not neces-
sarily an indication of leakage. Actual dripping of hot
fluid when systems are under pressure (during vehicle
operation) should be noted before hose is replaced based
on leakage. NOTE:
Inspection of brake hoses should be done when-
ever the brake system is serviced and every engine oil
change.
WARNING!
Worn brake hoses can burst and cause brake failure.
You could have an accident. If you see any signs of
cracking, scuffing, or worn spots, have the brake
hoses replaced immediately.
Brake Master Cylinder
The fluid level in the master cylinder should be checked
when performing under hood services, or immediately if
the “Brake Warning Light” shows system failure.
338 MAINTAINING YOUR VEHICLE

3. Firmly grasp the lock ring on the back of the headlamp
unit housing.
4. Rotate the lock ring on the back of the headlamp
housing counter-clockwise to unlock it.
CAUTION!
Do not touch the new bulb with your fingers. Oil
contamination will severely shorten bulb life. If the
bulb comes in contact with any oily surface, clean
the bulb with rubbing alcohol.
5. Disconnect the electrical connector and replace the
bulb.
Front Turn Signal
1. Remove the screw from the turn signal/park lamp
unit.
2. Pull the inboard side of the lamp away enough to
disengage the tab that secures the outboard side of the
lamp from the slot in the front bumper fascia.
MAINTAINING YOUR VEHICLE 357
7

Center High Mounted Stop Light (CHMSL)
1. Remove the two screws securing the CHMSL.
2. Twist the bulb socket to remove from the CHMSL
housing.
3. Pull the bulb out of the socket. 4. Replace the bulb, reinstall the socket and reattach the
CHMSL.
MAINTAINING YOUR VEHICLE 361
7

ABS (Anti-Lock Brake System)............175,245
Adding Washer Fluid ..................... 163
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 326
Air Conditioner Maintenance ............... 327
Air Conditioning, Operating Tips ............ 210
Air Conditioning Refrigerant ............... 328
Air Filter .............................. 326
Air Pressure, Tires ....................... 262
Airbag ................................ 47
Airbag Deployment ....................... 58
Airbag Light ....................... 52,61,179
Airbag Maintenance ....................... 60
Airbag, Window (Side Curtain) ............... 48
Alarm, Panic ............................ 25
Alarm (Security Alarm) .................... 27
Alignment and Balance ................... 267
Alterations/Modifications, Vehicle ............. 8
Antenna, Satellite Radio ................... 204
Antifreeze (Engine Coolant) ................ 362 Anti-Lock Brake System (ABS)
............125,245
Anti-Lock Warning Light .................. 175
Appearance Care ........................ 345
Arming Theft System (Security Alarm) ......... 28
Auto Down Power Windows ................ 33
Automatic Dimming Mirror ................. 80
Automatic Door Locks ..................... 21
Automatic Transmission ................227,340
Adding Fluid ......................... 341
Fluid and Filter Changes ................. 340
Fluid Level Check ...................... 340
Fluid Type ........................... 340
Gear Ranges .......................... 228
Shifting ............................. 227
Special Additives ...................... 341
Torque Converter ...................... 232
Auxiliary Electrical Outlet (Power Outlet) ...... 153
Auxiliary Power Outlet ................... 153
402 INDEX

Malfunction Indicator (Check Engine)........ 174
Map Reading ......................... 116
Oil Pressure .......................... 177
Park ............................... 116
Passing ............................. 117
Reading ............................. 136
Rear Servicing ........................ 360
Rear Tail ............................ 360
Seat Belt Reminder ..................... 180
Security Alarm (Theft Alarm) .............. 179
Sentry Key ........................... 179
Service .............................. 356
Side Marker .......................... 360
Tire Pressure Monitoring (TPMS) ........... 173
Traction Control .................... 129,182
Transfer Case ...................... 178,179
Transmission Warning ................... 177
Turn Signal .................. 1 17,173,357,360
Wait to Start .......................... 181 Warning (Instrument Cluster Description)
..... 173
Water in Fuel ......................... 180
Loading Vehicle Tires ............................... 257
Locks Automatic Door ........................ 21
Child Protection ........................ 21
Door ................................ 18
Power Door ........................... 20
Steering Wheel ......................... 17
Lower Anchors and Tether for CHildren
(LATCH) ............................ 65,66
Lubrication, Body ....................... 329
Luggage Carrier ......................... 164
Luggage Rack (Roof Rack) ................. 164
Maintenance Free Battery .................. 326
Maintenance Procedures ................... 319
Maintenance Schedule .................366,384
INDEX 411
10

Restraints, Occupant...................... 34
Retractable Cargo Area Cover ............... 157
Rocking Vehicle When Stuck ................ 233
Roof Rack (Luggage Rack) ................. 164
Rotation, Tires .......................... 275
Safety Checks Inside Vehicle ................. 73
Safety Checks Outside Vehicle ............... 73
Safety Defects, Reporting .................. 397
Safety, Exhaust Gas ....................... 72
Safety Information, Tire ................... 253
Safety Tips ............................. 72
Satellite Radio .......................... 201
Satellite Radio Antenna ................... 204
Schedule, Maintenance .................366,384
Seat Belt Reminder ....................... 45
Seat Belts Adjustable Upper Shoulder Anchorage ........ 41
And Pregnant Women ................... 46 Child Restraint
....................... 61,69
Extender ............................. 46
Inspection ............................ 73
Maintenance .......................... 348
Operating Instructions ................... 37
Pretensioners .......................... 44
Reminder ............................ 180
Seats ................................. 106
Adjustment .......................... 106
Cleaning ............................ 347
Head Restraints ....................... 108
Heated .............................. 110
Power .............................. 109
Rear Folding .......................... 111
Reclining ............................ 107
Security Against Theft ................... 20,27
Security Alarm (Theft Alarm) ................ 27
Selection of Oil ...................... 321,322
Selec-Trac Operation ...................... 238
INDEX 415
10