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 emission 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.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines
that the fuel filler cap is loose, improperly
installed, or damaged, a loose gascap indicator
will display in the EVIC telltale display area.
Refer to “Electronic Vehicle Information Center (EVIC) in7
MAINTAINING YOUR VEHICLE 681
“Understanding Your Instrument Panel” for further in-
formation. Tighten the fuel filler cap properly and press
the SELECT button to turn off the message. If the
problem continues, the message will appear the next time
the vehicle is started.
A loose, improperly installed, or damaged fuel filler cap
may also turn on the Malfunction Indicator Light (MIL).
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.
Your vehicle has a simple ignition key-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.
682 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 “Oil Change Required” message is
displayed. Severe Operating Conditions 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).
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 otherthan your authorized dealer, the message can be reset by
referring to the steps described under “Electronic Vehicle
Information Center (EVIC)/Oil Change Required” in
“Understanding Your Instrument Panel” for further in-
formation.
NOTE:
1500 Models Only
•
Under no circumstances should oil change intervals
exceed 10,000 miles (16,000 km) or twelve months on
1500 trucks, whichever comes first.
2500 – 3500 Models
• Under no circumstances should oil change intervals
exceed 8,000 miles (13,000 km) or twelve months on
2500 – 3500 trucks, whichever comes first.
8
M A I
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S750 MAINTENANCE SCHEDULES
Certification Label........................ .579
Chart, Tire Sizing ........................ .531
Check Engine Light (Malfunction Indicator Light). . . .278
Checking Your Vehicle For Safety ..............115
Checks, Safety ............................115
Child Restraint ............................82
Cigar Lighter ........................... .224
Clean Air Gasoline ....................... .569
Cleaning Wheels .............................. .715
Climate Control ......................... .356
Cold Weather Operation ....................387
Compact Disc (CD) Maintenance ..............355
Compact Spare Tire ....................... .546
Console, Overhead ....................... .205
Contract, Service ......................... .763
Coolant Pressure Cap (Radiator Cap) ...........700
Cooling System .......................... .697
Adding Coolant (Antifreeze) ...............699Coolant Capacity
...................... .742
Coolant Level ......................... .697
Disposal of Used Coolant .................701
Drain, Flush, and Refill ...................698
Inspection ........................... .701
Points to Remember .....................703
Pressure Cap ......................... .700
Radiator Cap ......................... .700
Selection of Coolant (Antifreeze) .............698
Corrosion Protection ...................... .712
Cupholders ............................ .226
Customer Assistance ...................... .761
Data Recorder, Event .......................81
Daytime Running Lights ....................164
Dealer Service ........................... .683
Defroster, Rear Window .....................236
Defroster, Windshield ......................117
Delay (Intermittent) Wipers ..................174
Differential, Limited-Slip ....................484
772 INDEX
Electronic Stability Program (ESP) Indicator.....527
Exterior ..............................119
Fog ................................ .167
Four-Wheel Drive Indicator ................432
Hazard Warning Flasher ..................617
Headlights ........................... .163
High Beam ........................... .173
High Beam Indicator .....................282
High Beam/Low Beam Select ...............173
Illuminated Entry ........................22
Instrument Cluster ..................... .278
Interior ............................. .168
Oil Pressure .......................... .283
Passing ............................. .173
Seat Belt Reminder ..................... .282
Security Alarm ........................ .283
Service .............................. .730
Side Marker .......................... .741
SmartBeams .......................... .165Tire Pressure Monitoring (TPMS)
............284
Traction Control ....................... .527
Transfer Case ......................... .432
Turn Signal ............................119
Warning (Instrument Cluster Description) ......278
Limited-Slip Differential ....................484
Loading Vehicle ......................... .579
Tires ............................... .535
Locks ..................................37
Automatic Door .........................39
Child Protection .........................40
Door .................................37
Power Door ............................38
Low Tire Pressure System ...................557
Lubrication, Body ........................ .692
Lug Nuts .............................. .618
Maintenance Free Battery ....................689
Maintenance Procedures ....................684
Maintenance Schedule ..................... .750
778 INDEX
Malfunction Indicator Light (Check Engine).......682
Manual, Service ......................... .766
Manual Transmission Fluid Level Check ...................... .708
Lubricant Selection ..................... .746
Memory Seat ........................... .156
Methanol .............................. .569
Mirrors ............................... .128
Electric Powered ....................... .137
Heated .............................. .139
Memory ............................. .156
Outside ............................. .135
Rearview ............................ .128
Trailer Towing ........................ .141
Modifications/Alterations, Vehicle ...............7
Monitor, Tire Pressure System ................557
Mopar Parts ............................ .683
MTBE/ETBE ........................... .569
Multi-Function Control Lever .................172Navigation System (Uconnect® gps)
............202
New Vehicle Break-In Period .................114
Occupant Restraints ........................49
Occupant Restraints (Sedan) ..................70
Octane Rating, Gasoline (Fuel) ................568
Off-Pavement Driving (Off-Road) ..............466
Off-Road Driving (Off-Pavement) ..............466
Oil, Engine ............................. .685
Capacity ............................ .742
Change Interval ....................... .686
Dipstick ............................. .685
Disposal ............................. .688
Filter ............................... .688
Filter Disposal ........................ .688
Identification Logo ..................... .686
Recommendation ...................... .686
Synthetic ............................ .688
V
iscosity ............................ .687
Oil Filter, Selection ....................... .688
10
INDEX 779
Trailer Towing.......................... .581
Cooling System Tips .....................601
Hitches ............................. .585
Minimum Requirements ..................590
Mirrors ............................. .141
Trailer and Tongue Weight .................589
Wiring .............................. .598
Trailer Towing Guide ...................... .586
Trailer Weight ........................... .586
Transfer Case ........................... .708
Electronically Shifted .....................433
Fluid ............................... .746
Transmission ........................... .397
Automatic ........................... .397
Fluid ............................... .746
Maintenance .......................... .708
Shifting ............................. .394
Transmitter Battery Service (Remote Keyless Entry)....29
Transmitter Programming (Remote Keyless Entry) . . .23 Transmitter, Remote Keyless Entry (RKE)
.........23
Tread Wear Indicators ..................... .548
Turn Signals ............................ .172
Uniform Tire Quality Grades .................767
Universal Garage Door Opener (HomeLink®) Programming HomeLink® .................208
Unleaded Gasoline ....................... .568
Untwisting Procedure, Seat Belt ................60
Utility Rails, Rear Cargo Area ................255
Vehicle Identification Number (VIN) .............6
Vehicle Loading ......................... .536
Vehicle Modifications/Alterations ...............7
Vehicle Storage .......................... .375
Viscosity, Engine Oil ...................... .687
Warning Lights (Instrument Cluster Description) . . .278
Warnings and Cautions .......................6
Warranty Information ..................... .764
Washers, Windshield ...................... .175
Washing Vehicle ......................... .713
10
INDEX 785