2008 JEEP COMMANDER engine overheat

IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
²On the highways Ð Slow down.
²In city traffic Ð While stopped, put transmission in N
(Neutral), but do not increase engine idle speed.
NOTE:There are steps that you can take to slow down
an impending overheat condition. If your air conditioner
is on, turn it off. The air conditioning system adds heat to
the engine cooling system and turning off the A/C
removes this heat. You can also turn the Temperature
Control to maximum heat, the Mode Control to floor, and
the Fan Control to High. This allows the heater core to act
as a supplement to the radiator and aids in removing heat
from the engine cooling system.
CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads ªHº,
pull over and stop the vehicle. Idle the vehicle with
the air conditioner turned off until the pointer drops
back into the normal range. If the pointer remains on
the ªHº, and you hear continuous chimes, turn the
engine off immediately, and call for service.
WHAT TO DO IN EMERGENCIES 367
6

CAUTION!
Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. In
the event of engine malfunction, particularly involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
WARNING!
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be
grass or leaves coming into contact with your exhaust
system. Do not park or operate your vehicle in areas
where your exhaust system can contact anything that
can burn.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune up to manufacturer's specifica-
tions, should be obtained immediately.
394 MAINTAINING YOUR VEHICLE

²Use only high purity water such as distilled or deion-
ized water when mixing the water/antifreeze (cool-
ant) solution. The use of lower quality water will
reduce the amount of corrosion protection in the
engine cooling system.
Please note that it is the owner's responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
NOTE:Mixing antifreeze/coolant types will decrease
the life of the antifreeze/coolant and will require more
frequent antifreeze/coolant changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of
antifreeze/coolant, and to insure that antifreeze/coolant
will return to the radiator from the coolant recovery tank.The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
²The warning words DO NOT OPEN HOT on the
cooling system pressure cap are a safety precau-
tion. Never add antifreeze/coolant when the en-
gine is overheated. Do not loosen or remove the
cap to cool an overheated engine. Heat causes
pressure to build up in the cooling system. To
prevent scalding or injury, do not remove the
pressure cap while the system is hot or under
pressure.
²Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
404 MAINTAINING YOUR VEHICLE

Electronic Brake Control System............. 139
Anti-Lock Brake System................. 139
Brake Assist System.................... 141
Electronic Roll Mitigation................ 142
Electronic Stability Program............... 143
Traction Control System................. 140
Electronic Roll Mitigation (ERM)............. 142
Electronic Speed Control (Cruise Control)...... 136
Electronic Stability Program (ESP)............ 143
Electronic Throttle Control Warning Light...... 194
Electronic Vehicle Information Center
(EVIC).............................192,195
Emergency, In Case of
Freeing Vehicle When Stuck............... 289
Hazard Warning Flasher................. 366
Jacking............................. 368
Jump Starting......................... 374
Tow Hooks.......................... 377
Emission Control System Maintenance......386,440Engine
Air Cleaner.......................... 393
Block Heater......................... 280
Break-In Recommendations................ 69
Compartment...................382,383,384
Compartment Identification.........382,383,384
Cooling............................. 401
Exhaust Gas Caution................38,70,337
Fails to Start.......................... 279
Fuel Requirements..................333,435
Multi-Displacement..................... 306
Oil ..............................389,435
Oil Change Interval.................... 390
Oil Disposal.......................... 391
Oil Filter............................ 391
Oil Filter Disposal...................... 391
Oil Selection.......................... 435
Oil Synthetic......................... 391
Overheating.......................... 367
462 INDEX

Overheating, Engine...................192,367
Owner's Manual (Operator Manual).......... 452
Paint Care............................. 415
Paint Damage.......................... 415
Panic Alarm............................ 24
Park Sense System, Rear................... 153
Parking Brake.......................... 300
Passing Light........................... 129
Pedals, Adjustable....................... 135
Personal Settings........................ 205
Pets.................................. 69
Pets, Transporting........................ 69
Phone, Cellular.......................... 82
Phone, Hands-Free (UConnectŸ)............. 82
Placard, Tire and Loading Information......... 311
Polishing and Waxing..................... 415
Port
Universal Serial Bus (USB)................ 239USB ................................ 239
Power
Distribution Center (Fuses)............... 422
Door Locks........................... 29
Inverter............................. 170
Lift Gate............................. 36
Mirrors.............................. 80
Outlet (Auxiliary Electrical Outlet).......... 169
Seats............................... 110
Steering..........................305,398
Sunroof............................. 165
Windows............................. 31
Pregnant Women and Seat Belts.............. 47
Preparation for Jacking.................... 370
Pretensioners
Seat Belts............................. 46
Programmable Electronic Features............ 205
Programming Transmitters (Remote Keyless
Entry)................................. 21
470 INDEX

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 Wireless Ignition Node (WIN)Fob with Integrated Key (FOBIK)Ignition Key RemovalKey-In-Ignition ReminderSENTRY KEY Replacement KeysCustomer Key (Fob) ProgrammingGeneral InformationSECURITY ALARM SYSTEM - IF EQUIPPED To Set
the AlarmTo Disarm the SystemILLUMINATED ENTRY REMOTE KEYLESS ENTRY To Unlock the DoorsTo Lock the DoorsTo Release the Liftgate Flipper GlassUsing The Panic AlarmProgramming Additional TransmittersTransmitter Battery ServiceGeneral Information
REMOTE STARTING SYSTEM - IF EQUIPPED DOOR LOCKS Manual Door LocksPower Door LocksChild Protection Door LockWINDOWS Power WindowsWind BuffetingLIFTGATE Liftgate Flipper GlassPower Liftgate - If EquippedOCCUPANT RESTRAINTS Lap/Shoulder
BeltsLap/Shoulder Belt Operating InstructionsAdjustable Upper Shoulder Belt AnchorageAutomatic Locking Mode - If EquippedEnergy Management FeatureSeat 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 Vehicle
UNDERSTANDING THE FEATURES OF YOUR VEHICLE MIRRORS Inside Day/Night MirrorAutomatic Dimming Mirror - If EquippedOutside MirrorsExterior MirrorsFolding FeatureDrivers and Front Passenger Outside Automatic Dimming Mirror - If EquippedPower Remote
Control Outside Mirrors - If EquippedHeated Remote Control Mirrors - If EquippedLighted Vanity Mirrors - If EquippedHANDS-FREE COMMUNICATION (UConnect) - IF EQUIPPED OperationPhone Call FeaturesUConnect System FeaturesAdvanced Phone Connectivity
Things You Should Know About Your UConnect SystemGeneral InformationSEATS Front Manual Seat AdjustmentFront Seat Adjustment - ReclineManual Lumbar Support Adjustment8 - Way Drivers Power Seat4 - Way Passengers Power Seat - If EquippedHead Restraints
Front Heated Seats-If Equipped40/20/40 Second Row Folding Seat50/50 Third Row Folding Seat - If EquippedDRIVER MEMORY SEAT - IF EQUIPPED Setting Memory Positions and Linking Remote Keyless Entry Transmitter to MemoryMemory Position RecallTo Disable
A Transmitter Linked to MemoryEasy Entry/Exit SeatTO OPEN AND CLOSE THE HOOD LIGHTS Multi-Function Control LeverBattery Saver Feature-Exterior/Interior LightsHeadlights and Parking LightsAutomatic Headlight System - If EquippedSmartBeams - If Equipped
Instrument Panel and Interior LightsDaytime Running Lights - If EquippedLights-On ReminderFog Lights - If EquippedTurn SignalsHigh Beam SwitchPassing LightHeadlight Time DelayInterior LightsCourtesy/Reading LightsWINDSHIELD WIPERS AND WASHERS MistSpeed
Sensitive Intermittent Wiper SystemRain Sensing Wipers-If EquippedTILT/TELESCOPING STEERING COLUMN ADJUSTABLE PEDALS - IF EQUIPPED ELECTRONICSPEED CONTROL - IF EQUIPPED Electronic Speed Control OperationTo ActivateTo Set At A Desired
SpeedTo DeactivateTo Resume SpeedTo Vary The Speed SettingTo 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)TSC (Trailer Sway Control)HSA (Hill Start Assist) (4WD Models with NV245 Two-Speed Transfer Case Only)HDC (Hill Descent Control) (4WD Models with NV245 Two-Speed Transfer Case Only)ESP/BAS Warning Lamp and ESP/TCS Indicator LightREAR
PARK ASSIST SYSTEM- IF EQUIPPED Rear Park Assist SensorsRear Park Assist Warning DisplayEnable/Disable the Rear Park Assist SystemService the RearPark Assist SystemCleaning the Rear Park Assist SystemREAR CAMERA - IF EQUIPPED Turning the Rear
Camera OnTurning the Rear Camera OffOVERHEAD CONSOLE - IF EQUIPPED GARAGE DOOR OPENER - IF EQUIPPED Programming HomeLinkGate Operator/Canadian ProgrammingUsing HomeLinkReprogramming a Single HomeLink ButtonSecurityTroubleshooting
TipsGeneral InformationPOWER SUNROOF - IF EQUIPPED Opening Sunroof - ExpressClosing Sunroof - ExpressPinch Protect FeaturePinch Protect OverrideVenting Sunroof - ExpressSunshade OperationWind BuffetingSunroof MaintenanceIgnition Off OperationSunroof
Fully ClosedCOMMAND-VIEW SKYLIGHTS - IF EQUIPPED POWER OUTLET Front Power OutletRear Power Outlet - If EquippedPOWER INVERTER - IF EQUIPPED CUP HOLDERS CARGO AREA FEATURES Cargo Load FloorREAR WINDOW FEATURES Rear Window
Wiper/WasherRear Window Defroster - If EquippedROOF LUGGAGE RACK - IF EQUIPPED UNDERSTANDING YOUR INSTRUMENT PANEL INSTRUMENT PANEL AND CONTROLS INSTRUMENT CLUSTER INSTRUMENT CLUSTER DESCRIPTION ELECTRONIC
VEHICLE INFORMATION CENTER (EVIC) Electronic Vehicle Information Center (EVIC) DisplaysEngine Oil Change Indicator SystemTrip FunctionsCompass DisplayPersonal Settings (Customer Programmable Features)System StatusRADIO GENERAL INFORMATION
Radio Broadcast SignalsTwo Types of SignalsElectrical DisturbancesAM ReceptionFM ReceptionSALES 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 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 REN - MULTIMEDIA SYSTEM - IF EQUIPPED Operating Instructions
- Satellite Radio (If Equipped)Operating Instructions - Hands-Free Communication (UConnect) (If Equipped)Clock Setting ProcedureSALES CODE RER- AM/FM/CD/DVD RADIO WITH NAVIGATION SYSTEM - IF EQUIPPED Operating Instructions - Satellite RadioClock
Setting ProcedureUNIVERSAL CONSUMER INTERFACE (UCI) - IF EQUIPPED Connecting the iPodControlling the iPod using Radio ButtonsPlay ModeList or Browse ModeSATELLITE RADIO (RSC) - IF EQUIPPED (REQ AND RES RADIOS ONLY) System Activation
Electronic Serial Number/Sirius Identification Number (ENS/SID)Selecting Satellite ModeSatellite AntennaReception QualityOperating Instructions - Satellite ModeOperating Instructions - Hands Free Phone (If Equipped)Operating Instructions - Video Entertainment System
(VES) (If Equipped)VIDEO ENTERTAINMENT SYSTEM (SALES CODE XRV) - IF EQUIPPED REMOTE SOUND SYSTEM CONTROLS - IF EQUIPPED Radio OperationCD PlayerCD/DVD DISC MAINTENANCE RADIO OPERATION AND CELLULAR PHONES CLIMATE
CONTROLS Manual Air Conditioning and Heating System - If EquippedAutomatic Temperature Control - If EquippedRear Climate Control - If EquippedOperating TipsOperating Tips Chart STARTING AND OPERATING STARTING PROCEDURES Normal StartingExtremely
Cold Weather (below -20 degrees F or -29 degrees C)If Engine Fails to StartAfter StartingENGINE BLOCK HEATER - IF EQUIPPED AUTOMATIC TRANSMISSION Shift Lock Manual Override - If EquippedBrake/Transmission Interlock System5-Speed Automatic Transmission
Gear RangesRocking the VehicleFOUR-WHEEL DRIVE OPERATION Quadra-Trac I Operating Instructions/Precautions - If EquippedQuadra-Trac II Operating Instructions/Precautions - If EquippedShift PositionsShifting ProceduresQuadra-Drive II System - If Equipped
ON-ROAD DRIVING TIPS OFF-ROAD DRIVING TIPS When To Use 4WD LOW Range - If EquippedDriving Through WaterDriving In Snow, Mud and SandHill ClimbingTraction DownhillAfter Driving Off-RoadPARKING BRAKE ANTI-LOCK BRAKE SYSTEM POWER
STEERING MULTI DISPLACEMENT SYSTEM (MDS) - 5.7L Engine Only TIRE SAFETY INFORMATION Tire Markings Tire Identification Number (TIN)Tire Loading andTire PressureTIRES - GENERAL INFORMATION Tire PressureTire Inflation PressuresTire Pressures
for High Speed OperationRadial-Ply TiresTire SpinningTread Wear IndicatorsLife of TireReplacement TiresAlignment and BalanceTIRE CHAINS TIRE ROTATION RECOMMENDATIONS TIRE PRESSURE MONITOR SYSTEM (TPMS) Base System - If EquippedPremium
System - If EquippedGeneral InformationFUEL REQUIREMENTS 3.7/4.7L Engines (If Equipped)5.7L Engines (If Equipped)Reformulated GasolineGasoline/Oxygenate BlendsMMT In GasolineMaterials Added To FuelFuel System CautionsCarbon Monoxide Warnings
FLEXIBLE FUEL (4.7L ENGINE ONLY) - IF EQUIPPED E-85 General InformationETHANOL FUEL (E-85)Fuel RequirementsSelection Of Engine Oil For Flexible Fuel Vehicles (E-85) and Gasoline VehiclesStartingCruising RangeReplacement PartsADDING FUEL Fuel Filler
Cap (Gas Cap)VEHICLE LOADING Certification LabelTRAILER TOWING Common Towing DefinitionsTrailer Hitch ClassificationTrailer Towing Weights (Maximum Trailer Weight Ratings)Trailer and Tongue WeightTowing RequirementsTowing TipsRECREATIONAL TOWING
(BEHIND MOTORHOME, ETC.) Towing - 2WD ModelsTowing - Quadra-Trac I (Single-Speed Transfer Case) 4WD ModelsTowing - Quadra-Trac II /Quadra-Drive II4WD ModelsSNOW PLOW WHAT TO DO IN EMERGENCIES HAZARD WARNING FLASHERS IF YOUR
ENGINE OVERHEATS JACKING AND TIRE CHANGING Jack LocationSpare Tire StowageSpare Tire RemovalPreparations For JackingJacking InstructionsJUMP STARTING EMERGENCY TOW HOOKS - IF EQUIPPED TOWING A DISABLED VEHICLE 2WD Models Only
4WD Models OnlyMAINTAINING YOUR VEHICLE ENGINE COMPARTMENT - 3.7L ENGINE COMPARTMENT - 4.7L ENGINE COMPARTMENT - 5.7L ONBOARD DIAGNOSTIC SYSTEM - OBD II Loose Fuel Filler Cap MessageEMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS REPLACEMENT PARTS DEALER SERVICE MAINTENANCE PROCEDURES Engine OilDrive Belts - Check Condition and TensionSpark PlugsSpark Plug WiresEngine Air Cleaner FilterCatalytic ConverterCrankcase Emission Control System
Maintenance-Free BatteryAir Conditioner MaintenancePower Steering Fluid CheckBody LubricationWindshield Wiper BladesWindshield Washers - Front and RearExhaust SystemCooling SystemHoses and Vacuum/Vapor HarnessesFuel System ConnectionsBrake System
Front/Rear Axle FluidTransfer CaseAutomatic TransmissionMaintenance After Off-Road DrivingAppearance Care And Protection From CorrosionFUSEPANEL Interior FusesUnderhood Fuses (Power Distribution Center) Underhood Fuses (Integrated Power Module) VEHICLE
STORAGE REPLACEMENT BULBS BULB REPLACEMENT Head LightFront Turn SignalFront Fog LightRear Tail, Stop, Turn Signal, and Back-Up LightsCenter High Mounted Stop Light (CHMSL)FLUIDS AND CAPACITIES FLUIDS, LUBRICANTS, AND GENUINE PARTS
EngineChassisMAINTENANCE SCHEDULES EMISSION CONTROL SYSTEM MAINTENANCE MAINTENANCE SCHEDULE - GASOLINE ENGINES 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 WARRANTY INFORMATION (U.S. Vehicles Only) MOPAR PARTS REPORTING SAFETY DEFECTS In CanadaPUBLICATION ORDER FORMS
DEPARTMENT OF TRANSPORTATION UNIFORM TIRE QUALITY GRADES TreadwearTraction GradesTemperature GradesINDEX