2008 JEEP WRANGLER service indicator

Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is possibly loose, improp-
erly installed, or damaged. A “gASCAP” message will be
displayed in the odometer. Tighten the gas cap until a
clickingsound is heard. This is an indication that the
gas cap is properly tightened. Press the odometer reset
button to turn the message off. If the problem persists,
the message will appear the next time the vehicle is
started. This might indicate a damaged cap. If the prob-
lem is detected twice in a row, the system will turn on the
“Malfunction Indicator Light.” Resolving the problem
will turn the “Malfunction Indicator Light.” off.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.
For states that require an Inspection and Mainte-
nance (I/M), this check verifies the Malfunction
Indicator Light (MIL) is functioning and is not on
when the engine is running, and that the OBD II system
is ready for testing.
Normally, the OBD II system will be ready. The OBD II
system may notbe ready if your vehicle was recently
serviced, recently had a dead battery, or a battery replace-
ment. If the OBD II system should be determined not
ready for the I/M test, your vehicle may fail the test.
380 MAINTAINING YOUR VEHICLE

REPLACEMENT BULBS — IF EQUIPPED
Interior LightsBulb Type
Auto. Trans. Indicator Light ................. 658
Courtesy Lights, Under Dash (1) .............. 906
Heater Control Lights (2) ................... 194
Rocker Switch Indicator Light (Rear Window
Defogger, and Rear Wash/Wipe) ............... **
Soundbar Dome Light ..................... 912
** Bulbs only available from authorized dealer.
Exterior Lights Bulb Type
Backup Lights (2) ........................ 3157
Center High-Mounted Stop Light (1) .........L.E.D.
Fog Lights ............................. 9145
Front Park/Turn Lights (2) .................3157
Front Side Marker Lights (2) ................. 168
Headlights (2) .......................... H13
Stop/Tail/Turn Lights (2) ..................3157
Underhood Light ......................... 561
License Light ........................... 194 NOTE:
Numbers refer to commercial bulb types that
can be purchased from your local authorized dealer.
If a bulb needs to be replaced, visit your authorized
dealer or refer to the applicable Service Manual.
BULB REPLACEMENT
NOTE: Lens fogging can occur under certain atmo-
spheric conditions. This will usually clear as atmospheric
conditions change to allow the condensation to change
back into a vapor. Turning the lamps on will usually
accelerate the clearing process.
Head Light
1. Open hood and support using prop rod.
2. Remove the front grille. Turn the retainers along the
top 1/4 turn counterclockwise and remove.
3. Pull the bottom of the grille away starting at one side
and working toward the other.
420 MAINTAINING YOUR VEHICLE

EMISSIONS CONTROL SYSTEM MAINTENANCE
The Scheduled Maintenance services listed inbold type
must be done at the times or mileages specified to ensure
the continued proper functioning of the emission control
system. These, and all other maintenance services in-
cluded in this manual, should be done to provide best
vehicle performance and reliability. More frequent main-
tenance may be needed for vehicles in severe operating
conditions, such as dusty areas and very short trip
driving.
Inspection and service should also be done any time a
malfunction is suspected.
NOTE: Maintenance, replacement, or repair of the emis-
sions control devices and systems on your vehicle may be
performed by any automotive repair establishment or
individual using any automotive part that has been
certified pursuant to U.S. EPA or, in the State of Califor-
nia, California Air Resources Board regulations.
MAINTENANCE SCHEDULE
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
On Non-EVIC equipped vehicles “CHANgE OIL” will
flash in the instrument cluster odometer and a single
chime will sound, indicating that an oil change is neces-
sary.
Based on engine operation conditions the oil change
indicator message will illuminate, this means that service
is required for your vehicle. Have your vehicle serviced
as soon as possible, within the next 500 mi (805 km).
NOTE:
•The oil change indicator message will not monitor the
time since the last oil change. Change your vehicles oil
if it has been 6 months since your last oil change even
if the oil change indicator message is NOT illumi-
nated.
428 MAINTENANCE SCHEDULES
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Charging System Light.................... 206
Chart, Tire Sizing ........................ 314
Check Engine Light
(Malfunction Indicator Light) .............213,380
Child Restraint .................... 62,63,69,72
Child Restraint Tether Anchors .............68,69
Child Seat .............................. 67
Climate Control ......................... 259
Clock ........................... 224,236,251
Compact Disc (CD) Maintenance ............. 258
Compass .............................. 215
Compass Calibration ..................... 217
Computer, Trip/Travel .................... 215
Console ............................... 118
Console, Floor .......................... 118
Contract, Service ........................ 439
Converter, Catalytic ...................... 386
Cooling System ......................... 394
Adding Coolant (Antifreeze) .............. 396Coolant Capacity
...................... 424
Coolant Level ......................... 397
Disposal of Used Coolant ................ 397
Drain, Flush, and Refill .................. 395
Inspection ........................... 394
Points to Remember .................... 398
Pressure Cap ......................... 396
Selection of Coolant (Antifreeze) .........395,424
Temperature Gauge ..................... 209
Corrosion Protection ..................... 406
Crankcase Emission Control System .......... 388
Cruise Light ........................... 209
Cup Holder ............................ 117
Customer Assistance ..................... 437
Data Recorder, Event ...................... 60
Daytime Running Lights ................... 99
Dealer Service .......................... 382
Defroster, Rear Window ................... 198
448 INDEX

Back-Up............................. 422
Brake Assist Warning ................. 1 15,214
Brake Warning ........................ 207
Bulb Replacement ...................... 420
Cargo ............................... 95
Center Mounted Stop ................... 423
Check Engine (Malfunction Indicator) ........ 213
Cruise .............................. 209
Daytime Running ....................... 99
Dimmer Switch, Headlight ................ 98
Electronic Stability Program (ESP)
Indicator ....................... 1 15,213,214
Electronic Throttle Control Warning ......... 214
Engine Temperature Warning .............. 209
Fog .............................. 99,422
Hazard Warning Flasher ................. 364
Headlight Switch ....................... 97
Headlights ........................... 420
High Beam ........................... 207 High Beam Indicator
.................... 207
Instrument Cluster ...................... 97
Interior .............................. 95
Lights On Reminder ..................... 98
Low Fuel ............................ 206
LowTire ............................ 210
Oil Pressure .......................... 207
Passing .............................. 99
Rear Servicing ........................ 422
Rear Tail ............................ 422
Seat Belt Reminder ..................... 207
Sentry Key ........................... 209
Service .............................. 420
Side Marker .......................... 422
Tire Pressure Monitoring (TPMS) ........... 210
Traction Control ....................... 213
Turn Signal ................... 99,207,421,422
Warning (Instrument Cluster Description) ..... 206
Loading Vehicle ......................... 342
454 INDEX

Tires ............................... 317
Locking Axle ........................ 290,291
Locks Door .............................. 31,32
Power Door ........................... 33
Steering Wheel ......................... 14
Lower Anchors and Tether for CHildren
(LATCH) ............................ 68,69
Lubrication, Body ....................... 392
Maintenance Free Battery .................. 389
Maintenance Procedures ................... 383
Maintenance Schedule .................... 428
Malfunction Indicator Light (Check Engine) . . 213,380
Manual, Service ......................... 441
Manual Transmission .................. 275,403
Fluid Level Check ...................... 404
Lubricant Selection ..................... 403
Shift Speeds .......................... 276 Master Cylinder (Brakes)
.................. 400
Mini-Trip Computer ...................... 215
Mirrors ................................ 83
Outside .............................. 84
Rearview ............................. 83
Modifications/Alterations, Vehicle ............. 8
Modular Hard Top ....................... 125
Monitor, Tire Pressure System ............... 330
Mopar Parts ......................... 382,440
MP3 Player ............................ 250
Multi-Function Control Lever ................ 97
Navigation Radio ........................ 250
Navigation System ....................... 250
New Vehicle Break-In Period ................ 75
Occupant Restraints ....................... 40
Octane Rating, Gasoline (Fuel) .............. 336
Odometer ............................. 211
INDEX 455
10

Spare Tire........................... 367
Spinning ............................ 325
Tread Wear Indicators ................... 326
To Open Hood .......................... 94
Tongue Weight/Trailer Weight .............. 352
Torque Converter Clutch .................. 285
Tow Hooks, Emergency ................... 374
Towing ............................ 344,374
Disabled Vehicle ....................... 374
Guide .............................. 348
Recreational .......................... 359
Weight .............................. 348
Trac-Lok Rear Axle ...................... 289
Traction Control ......................... 106
Traction Control Light .................... 213
Trailer Towing .......................... 344
Cooling System Tips .................... 359
Hitches .......................... 336,348
Minimum Requirements ................. 353 Trailer and Tongue Weight
................ 352
Wiring .............................. 356
Trailer Towing Guide ..................... 348
Trailer Weight .......................... 348
Transfer Case ........................... 404
Four-Wheel-Drive Operation .............. 285
Maintenance .......................... 404
Transmission Automatic ........................... 281
Maintenance ....................... 401,403
Manual ............................. 275
Range Indicator ....................... 210
Shifting ............................. 279
Transmitter Battery Service
(Remote Keyless Entry) .................... 24
Transmitter Programming
(Remote Keyless Entry) .................... 22
Transporting Pets ........................ 74
Tread Wear Indicators .................... 326
INDEX 461
10

INTRODUCTION INTRODUCTION ROLLOVER WARNING HOW TO USE THIS MANUAL WARNINGS AND CAUTIONS VEHICLE IDENTIFICATION NUMBER VEHICLE MODIFICATIONS/ALTERATIONS THINGS TO KNOW BEFORE STARTING YOUR VEHICLE A WORD
ABOUT YOUR KEYS Ignition Key RemovalKey-In-Ignition ReminderSTEERING WHEEL LOCK To Manually Lock the Steering WheelTo Release the Steering Wheel LockSENTRY KEY Replacement KeysCustomer Key ProgrammingGeneral InformationSECURITY ALARM
SYSTEM - IF EQUIPPED To Set the AlarmTo Disarm the SystemILLUMINATED ENTRY REMOTE KEYLESS ENTRY - IF EQUIPPED To Unlock the Doors and Swing GateTo Lock the Doors and Swing GateUsing The Panic AlarmTo Turn Off Flash Lights With Lock
Programming Additional TransmittersGeneral InformationBattery ReplacementREMOTE STARTING SYSTEM - IF EQUIPPED DOORS Upper Half Door Window Removal (If Equipped)Upper Half Door Window Installation (If Equipped)Front Door RemovalRear Door Removal
(Four-Door Models)DOOR LOCKS Manual Door LocksPower Door Locks - If EquippedAutomatic Unlock Doors On ExitAutomatic Door LocksWINDOWS Power Windows - If EquippedRear Power Windows (Four-Door Models Only)Wind BuffetingREAR SWING GATE
OCCUPANT RESTRAINTS Lap/Shoulder BeltsRear Center Lap/Shoulder Belt Retractor Lock-Out (Four-Door Models Only)Adjustable Upper Shoulder Belt AnchorageSeat Belt PretensionersEnhanced Seat Belt Use Reminder System (BeltAlert)Seat Belts And Pregnant
WomenSeat Belt ExtenderDriver And Front Passenger Supplemental Restraint Systems (SRS) Child RestraintENGINE BREAK-IN RECOMMENDATIONS SAFETY TIPS Exhaust GasSafety Checks You Should Make Inside The VehicleSafety Checks You Should Make
Outside The VehicleUNDERSTANDING THE FEATURES OF YOUR VEHICLE MIRRORS Inside Day/Night MirrorOutside MirrorsHANDS-FREE COMMUNICATION (UConnect) SEATS Front Seat AdjustmentManual Seat Height Adjustment - If EquippedFront Seatback
ReclineFront Easy Entry Seats (Two-Door Models)Head RestraintsFold And Tumble Rear Seat (Two-Door Models)Removing the Rear Seat (Two-Door Models)Replacing the Rear Seat (Two-Door Models)60/40 Split Folding Rear Seat (Four-Door Models)To Raise the Rear
SeatTO OPEN AND CLOSE THE HOOD LIGHTS Interior LightsMultifunction Control LeverParking Lights, Instrument Panel Lights, and HeadlightsLights-On ReminderHeadlight Dimmer SwitchPassing LightFront Fog Lights - If EquippedTurn SignalsDaytime Running Lights
- If EquippedWINDSHIELD WIPERS AND WASHERS Intermittent Wiper SystemWindshield Wiper OperationWindshield WashersMist FeatureTILT STEERING COLUMN ELECTRONIC SPEED CONTROL - IF EQUIPPED To ActivateTo Set At A Desired SpeedTo Deactivate
To Resume SpeedTo Vary The Speed SettingManual TransmissionTo Accelerate For PassingELECTRONIC BRAKE CONTROL SYSTEM ABS (Anti-Lock Brake System)TCS (Traction Control System)BAS (Brake Assist System)ERM (Electronic Roll Mitigation)ESP (Electronic
Stability Program)ESP/BAS Warning LightELECTRICAL POWER OUTLET Electrical Outlet Use With Engine OffCUPHOLDERS Front CupholdersRear CupholdersSTORAGE Console Storage CompartmentRear Storage CompartmentDUAL TOP - IF EQUIPPED Removing
The Soft TopInstalling the Soft TopFREEDOM TOP THREE-PIECE MODULAR HARD TOP Front Panel(s) RemovalFront Panel(s) InstallationFront Panel(s) Installation Only (With Rear Hard Top Removed)Rear Hard Top RemovalRear Hard Top InstallationDOOR FRAME
Door Frame Removal (Two-Door Models)Door Frame Installation (Two-Door Models)Door Frame Removal (Four-Door Models)Door Frame Installation (Four-Door Models)SOFT TOP (TWO-DOOR MODELS) Folding Down The Soft Top Putting Up The Soft Top SUNRIDER
(TWO-DOOR MODELS) - IF EQUIPPED SUNRIDER (FOUR-DOOR MODELS) - IF EQUIPPED SOFT TOP (FOUR-DOOR MODELS) Folding Down The Soft Top Putting Up The Soft Top FOLDING WINDSHIELD Lowering The Windshield And Removing Side BarsRaising
The Windshield And Replacing Side BarsREAR WINDOW FEATURES - HARD TOP ONLY Rear Window Wiper/Washer - If EquippedRear Window Defroster - If EquippedUNDERSTANDING YOUR INSTRUMENT PANEL INSTRUMENT PANEL AND CONTROLS
INSTRUMENT CLUSTER INSTRUMENT CLUSTER DESCRIPTION COMPASS AND TRIP COMPUTER - IF EQUIPPED Control ButtonsTrip ConditionsCompass Temperature DisplayRADIO GENERAL INFORMATION Radio Broadcast SignalsTwo Types of SignalsElectrical
DisturbancesAM ReceptionFM ReceptionSALES CODE RES - AM/FM STEREO RADIO WITH CD PLAYER (MP3 AUX JACK) Operating Instructions - Radio ModeOperation Instructions - CD MODE for CD and MP3 Audio PlayNotes On Playing MP3 FilesLIST Button (CD
Mode for MP3 Play)INFO Button (CD Mode for MP3 Play)SALES CODE REQ - AM/FM STEREO RADIO AND 6-DISC CD/DVD CHANGER (MP3/WMA AUX JACK) Operating Instructions - Radio ModeOperation Instructions - (DISC MODE for CD and MP3/WMA Audio
Play, DVD-VIDEO)Notes On Playing MP3/WMA FilesLIST Button (DISC Mode for MP3/WMA Play)INFO Button (DISC Mode for MP3/WMA Play)SALES CODE RER - MULTIMEDIA SYSTEM - IF EQUIPPED Operating Instructions - Satellite RadioOperating Instructions -
Hands-Free Communication (UConnect) (If Equipped)Clock Setting ProcedureSATELLITE RADIO - IF EQUIPPED (REN/REQ/RER/RES RADIOS ONLY) System Act ivationElectronic Serial Number/Sirius Identification Number (ESN/SID)Selecting Satellite ModeSatellite
AntennaReception QualityOperating Instructions - Satellite ModeOperating Instructions - Hands-Free Phone (If Equipped)Operating Instruction s - Video Entertainment System (VES) (If Equipped)CD/DVD DISC MAINTENANCE RADIO OPERATION AND CELLULAR
PHONES CLIMATE CONTROLS Manual Heater OnlyManual Air Conditioning and Heating System - If EquippedAir ConditioningOperating TipsSTARTING AND OPERATING STARTING PROCEDURES Manual TransmissionAutomatic TransmissionNormal StartingExtreme
Cold Weather (below -20 degrees F or -29 degrees C)If Engine Fails to StartAfter StartingENGINE BLOCK HEATER - IF EQUIPPED MANUAL TRANSMISSION ShiftingDownshiftingReverse ShiftingAUTOMATIC TRANSMISSION Shift Lock Manual Override
Brake/Transmission Interlock SystemAutomatic Transmission with OverdriveFOUR-WHEEL DRIVE OPERATION (COMMAND-TRAC OR ROCK-TRAC) - IF EQUIPPED Operating Instructions/PrecautionsShift PositionsShifting ProcedureTRAC-LOK REAR AXLE - IF
EQUIPPED AXLE LOCK (TRU-LOK) - RUBICON MODELS REAR AXLE LOCK - 4WD NON-RUBICON MODELS (IF EQUIPPED) ELECTRONIC SWAY BAR DISCONNECT - IF EQUIPPED ON-ROAD DRIVING TIPS OFF-ROAD DRIVING TIPS Side Step Removal - If
EquippedThe Basics of Off-Road DrivingWhen To Use 4L (Low) RangeSimultaneous Brake And Throttle OperationDriving In Snow, Mud and SandCrossing Obstacles (Rocks And Other High Points)Hill ClimbingDriving Through WaterAfter Driving Off-RoadPARKING BRAKE
ANTI-LOCK BRAKE SYSTEM POWER STEERING TIRE SAFETY INFORMATION Tire Markings Tire Identification Number (TIN)Tire Loading and Tire PressureTIRES - GENERAL INFORMATION Tire PressureTire Inflation Pressures Tire Pressures for High-Speed Operation
Radial-Ply TiresTire SpinningTread Wear IndicatorsLife of TireReplacement TiresAlignment and BalanceTIRE CHAINS TIRE ROTATION RECOMMENDATIONS TIRE PRESSURE MONITOR SYSTEM (TPMS) Base SystemGeneral InformationFUEL REQUIREMENTS
Reformulated GasolineGasoline/Oxygenate BlendsMMT In GasolineMaterials Added To FuelFuel System CautionsCarbon Monoxide WarningsADDING FUEL Fuel Filler Cap (Gas Cap)VEHICLE LOADING Certification LabelTRAILER TOWING Common Towing Definitions
Trailer Hitch ClassificationTrailer Towing Weights (Maximum Trailer Weight Ratings)Trailer and Trailer Tongue WeightTowing RequirementsTowing TipsRECREATIONAL TOWING (BEHIND MOTORHOME, ETC.) Towing - 2WD ModelsTowing - 4WD ModelsWHAT TO DO
IN EMERGENCIES HAZARD WARNING FLASHERS IF YOUR ENGINE OVERHEATS JACKING AND TIRE CHANGING Jack LocationSpare Tire StowagePreparations For JackingJacking Instructions JUMP STARTING EMERGENCY TOW HOOKS - IF EQUIPPED TOWING
A DISABLED VEHICLE MAINTAINING YOUR VEHICLE ENGINE COMPARTMENT - 3.8L ONBOARD DIAGNOSTIC SYSTEM - OBD II Loose Fuel Filler Cap MessageEMISSIONS INSPECTION AND MAINTENANCE PROGRAMS REPLACEMENT PARTS AUTHORIZED
DEALER SERVICE MAINTENANCE PROCEDURES Engine OilDrive Belts - Check Condition and TensionSpark PlugsCatalytic ConverterCrankcase Emission Control SystemFuel FilterEngine Air Cleaner FilterMaintenance-Free BatteryAir Conditioner MaintenancePower
Steering Fluid CheckDriveline And Steering Component LubricationBody LubricationWindshield Wiper BladesWindshield And Rear Window WashersExhaust SystemCooling SystemHoses and Vacuum/Vapor HarnessesBrake SystemAutomatic TransmissionHydraulic Clutch
Fluid - Manual TransmissionManual TransmissionTransfer CaseFront/Rear Axle FluidMaintenance After Off-Road DrivingAppearance Care And Protection From CorrosionFUSES (TOTALLY INTEGRATED POWER MODULE) VEHICLE STORAGE REPLACEMENT BULBS
- IF EQUIPPED BULB REPLACEMENT Head LightFront Park/Turn SignalFront Side MarkerFront Fog LightRear Tail, Stop, Turn Signal, and Backup LightsCenter High-Mounted Stop Light (CHMSL)FLUID CAPACITIES FLUIDS, LUBRICANTS AND GENUINE PARTS Engine
ChassisMAINTENANCE SCHEDULES EMISSIONS CONTROL SYSTEM MAINTENANCE MAINTENANCE SCHEDULE Required Maintenance IntervalsIF YOU NEED CONSUMER ASSISTANCE SUGGESTIONS FOR OBTAINING SERVICE FOR YOUR VEHICLE Prepare
For The AppointmentPrepare A ListBe Reasonable With RequestsIF YOU NEED ASSISTANCE DaimlerChrysler Motors Corporation Customer CenterDaimlerChrysler Canada Inc. Customer CenterIn Mexico contactCustomer Assistance For The Hearing Or Speech Impaired
(TDD/TTY)Service ContractWARRANTY INFORMATION (U.S. Vehicles Only) MOPAR PARTS REPORTING SAFETY DEFECTS In The 50 United States And Washington, D.CIn CanadaPUBLICATION ORDER FORMS DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES TreadwearTraction GradesTemperature GradesINDEX