
ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light (MIL).” It
will also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.
CAUTION!
•Prolonged driving with the MIL on could cause
further damage to the emissions control system. It
could also affect fuel economy and driveability.
The vehicle must be serviced before any emissions
tests can be performed.
• If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
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 “Malfunction7
MAINTAINING YOUR VEHICLE 513

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 maynotbe 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.
Your vehicle has a simple ignition actuated test, which
you can use prior to going to the test station. To check if
your vehicle’s OBD II system is ready, you must do the
following:
1. Cycle the ignition switch to the ON position, but do not crank or start the engine.
NOTE: If you crank or start the engine, you will have to
start this test over. 2. As soon as you cycle the ignition switch to the ON
position, you will see the MIL symbol come on as part
of a normal bulb check.
3. Approximately 15 seconds later, one of two things will happen:
• The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn OFF
the ignition or start the engine. This means that your
vehicle’s OBD II system is not readyand you should
not proceed to the I/M station.
• The MIL will not flash at all and will remain fully
illuminated until you turn OFF the ignition or start the
engine. This means that your vehicle’s OBD II system
is ready and you can proceed to the I/M station.
If your OBD II system is not ready,you should see your
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
514 MAINTAINING YOUR VEHICLE

VEHICLE STORAGE
If you are leaving your vehicle dormant for more than 21
days, you may want to take these steps to protect your
battery.
•Disconnect the negative cable from the battery.
• Anytime you store your vehicle, or keep it out of
service (e.g., vacation) for two weeks or more, run the
air conditioning system at idle for about five minutes
in the fresh air and high blower setting. This will
ensure adequate system lubrication to minimize the
possibility of compressor damage when the system is
started again.
REPLACEMENT BULBS
All of the interior bulbs are glass wedge base or glass
cartridge types. Aluminum base bulbs are not approved
and should not be used for replacement.
Interior Bulbs
Bulb Number
Rear Courtesy/Reading
Lamps W5W
Rear Compartment
(Trunk) Lamp 562
Overhead Console Read-
ing Lamps 578
Visor Vanity Lamps A6220
Glove Box Lamp – If
Equipped 194
Door Courtesy 562
Shift Indicator Lamp JKLE14140
Optional Door Map
Pocket/Cupholder LED (Serviced at
Authorized Dealer)
For lighted switches, see your authorized dealer for
replacement instructions.
560 MAINTAINING YOUR VEHICLE

MAINTENANCE SCHEDULE
Your vehicle is equipped with an automatic oil change
indicator system. The oil change indicator system will
remind you that it is time to take your vehicle in for
scheduled maintenance.
Based on engine operation conditions, the oil change
indicator message will illuminate. This means that ser-
vice is required for your vehicle. Operating conditions
such as frequent short-trips, trailer tow, extremely hot or
cold ambient temperatures, and E85 fuel usage will
influence when the “Change Oil” or “Oil Change Re-
quired” message is displayed. Severe Operating Condi-
tions can cause the change oil message to illuminate as
early as 3,500 miles (5,600 km) since last reset. Have your
vehicle serviced as soon as possible, within the next 500
miles (805 km).On Electronic Vehicle Information Center (EVIC)
equipped vehicles, “Oil Change Required” will be dis-
played in the EVIC and a single chime will sound,
indicating that an oil change is necessary.
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 necessary.
Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If a
scheduled oil change is performed by someone other
than your authorized dealer, the message can be reset by
referring to the steps described under “Electronic Vehicle
Information Center (EVIC)” in “Understanding Your
Instrument Panel” for further information.
NOTE:
Under no circumstances should oil change inter-
vals exceed 10,000 miles (16,000 km) or twelve months,
whichever comes first.
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S572 MAINTENANCE SCHEDULES

Severe Duty All Models
Change Engine Oil at 4000 miles (6,500 km) if the vehicle
is operated in a dusty and off road environment. This
type of vehicle use is considered Severe Duty
Once A Month Or Before A Long Trip:
•Check engine oil level
• Check windshield washer fluid level
• Check tire pressure and look for unusual wear or
damage. Rotate tires at the first sign of irregular wear,
even if it occurs before your next scheduled service.
• Check the fluid levels of the coolant reservoir, brake
master cylinder, and power steering and fill as needed.
• Check function of all interior and exterior lights Required Maintenance Intervals.
Refer to the maintenance schedules on the following
page for the required maintenance intervals.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Change oil and filter
• Rotate the tires.
Rotate at the first sign of irregular
wear, even if it occurs before your next scheduled
service
• Inspect battery and clean and tighten terminals as
required
• Inspect brake pads, shoes, rotors, drums, hoses
and park brake
•
Inspect engine cooling system protection and hoses
• Inspect exhaust system
• Inspect engine air cleaner if using in dusty or
off-road conditions8
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SMAINTENANCE SCHEDULES 573

Illuminated Entry........................21
Instrument Cluster ..................... .194
Intensity Control ....................... .204
Interior ............................. .203
License ............................. .564
Lights On Reminder .....................198
Low Fuel ............................ .319
Malfunction Indicator (Check Engine) .........307
Map Reading ......................... .201
Parade Mode (Daytime Brightness) ...........205
Passing ............................. .201
Reading ............................. .201
Seat Belt Reminder ..................... .312
Security Alarm ........................ .309
Service .............................. .560
Service Engine Soon (Malfunction Indicator) . . . .307
Tire Pressure Monitoring (TPMS) ............305
Traction Control ....................... .413
Turn Signal .......................... .103Vanity Mirror
..........................116
Warning (Instrument Cluster Description) ......304
Loading Vehicle ......................... .462
Capacities ........................... .464
Tires ............................... .421
Load Leveling System ..................... .297
Locks ..................................30
Automatic Door .........................32
Auto Unlock ...........................33
Child Protection .........................33
Door .................................30
Power Door ............................31
Low Tire Pressure System ...................440
Lubrication, Body ........................ .526
Lug Nuts .............................. .482
Maintenance Free Battery ....................521
Maintenance Procedures ....................516
Maintenance Schedule ..................... .572
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INDEX 601

Malfunction Indicator Light (Check Engine).......307
Manual, Service ......................... .586
Master Cylinder (Brakes) ....................537
Memory Feature (Memory Seat) ...............188
Memory Seat ........................... .188
Memory Seats and Radio ....................188
Methanol .............................. .452
Mini-Trip Computer ...................... .327
Mirrors ................................112
Electric Powered ........................115
Electric Remote .........................115
Exterior Folding ........................113
Heated ...............................116
Outside ..............................113
Vanity ...............................116
Mode Fuel Saver ........................... .325
Modifications/Alterations, Vehicle ...............7
Monitor, Tire Pressure System ................440Mopar Parts
............................ .515
MTBE/ETBE ........................... .452
Multi-Function Control Lever .................200
New Vehicle Break-In Period ..................98
Occupant Restraints ........................45
Occupant Restraints (Sedan) ..................63
Octane Rating, Gasoline (Fuel) ................451
Odometer .............................. .304
Oil Change Indicator ...................... .305
Oil Change Indicator, Reset ..................305
Oil, Engine ............................. .517
Capacity ............................ .566
Change Interval ....................... .324
Checking ............................ .517
Dipstick ............................. .517
Disposal ............................. .520
Filter ............................... .520
602 INDEX

Front Seat.............................49
Inspection ........................... .101
Operating Instructions ....................50
Pretensioners ...........................57
Rear Seat ..............................49
Untwisting Procedure .....................54
Seats ................................. .177
Adjustment .......................... .177
Easy Entry ........................... .191
Head Restraints ....................... .184
Heated .............................. .181
Height Adjustment ..................... .177
Memory ............................. .188
Power .............................. .177
Rear Folding ......................... .186
Seatback Release ....................... .186
Tilting .............................. .177
Security Alarm ............................18
Arm The System ........................19 Selection of Coolant (Antifreeze)
...............567
SENTRY KEY® FCC General Information ..................18
Key Programming .......................18
Sentry Key (Immobilizer) ....................16
Sentry Key Replacement .....................17
Service Assistance ........................ .581
Service Contract ......................... .583
Service Engine Soon Light (Malfunction Indicator) . .307
Service Manuals ......................... .586
Setting the Clock ......................... .346
Shifting ............................... .372
Automatic Transmission ..................372
Shift Lever Override ...................... .499
Shoulder Belts ............................49
Shoulder Belt Upper Anchorage ................54
Side Airbag ..............................69
Side View Mirror Adjustment .................113
Signals, Turn ........................... .103
606 INDEX