2007 JEEP LIBERTY service indicator

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.” 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 dealer for service as soon as
possible.CAUTION!
•Prolonged driving with the “Malfunction Indica-
tor Light” 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 per-
formed.
•If the “Malfunction Indicator Light” is flashing
while the engine is running, severe catalytic con-
verter 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
“GAS CAP” message will be displayed in the odometer
(located on the instrument cluster). Replace, or tighten
MAINTAINING YOUR VEHICLE 317
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the fuel filler cap properly to turn the message off (light
will time out). If the problem continues, the message will
appear the next time the vehicle is started.
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, which have an I/M (Inspection and
Maintenance) requirement, this check verifies the
following: the MIL (Malfunction Indicator Lamp)
is functioning and is not on when the engine is running,
and that the OBD (On Board Diagnostic) system is ready
for testing.
Normally, the OBD system will be ready. The OBD
system maynotbe ready if your vehicle was recently
serviced, if you recently had a dead battery, or a batteryreplacement. If the OBD 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 system is ready, you must do
the following:
1. Insert your ignition key into the ignition switch.
2. Turn the ignition to the ON position, but do not crank
or start the engine.
3. If you crank or start the engine, you will have to start
this test over.
4. As soon as you turn your key to the ON position, you
will see your MIL symbol come on as part of a normal
bulb check.
5. Approximately 15 seconds later, one of two things will
happen:
318 MAINTAINING YOUR VEHICLE

Catalytic Converter...................... 325
Caution, Exhaust Gas................... 74,144
CD (Compact Disc) Changer..........181,182,194
CD (Compact Disc) Player.........177,180,184,187
CD (Compact Disc) Player Maintenance........ 202
Cellular Phone........................ 85,202
Center High Mounted Stop Light............ 365
Certification Label....................... 280
Chains, Tire............................ 260
Changing A Flat Tire..................... 304
Charging System Light.................... 169
Chart, Tire Sizing........................ 246
Check Engine Light
(Malfunction Indicator Light)............... 318
Child Restraint...................... 64,69,71
Child Restraint Tether Anchors............. 68,69
Child Safety Locks........................ 30
Climate Control......................... 203
Clock .............................176,192Clutch Interlocking Ignition System........ 211,216
Command-Trac Operation.................. 226
Compact Disc (CD) Maintenance............. 202
Compass.............................. 141
Compass Calibration..................... 141
Compass Variance....................... 141
Computer, Trip/Travel.................... 139
Console, Overhead....................... 133
Contract, Service........................ 394
Converter, Catalytic...................... 325
Cooling System......................... 333
Adding Coolant (Antifreeze).............. 335
Coolant Capacity...................... 366
Coolant Level......................... 337
Disposal of Used Coolant................ 337
Drain, Flush, and Refill.................. 334
Inspection........................... 333
Points to Remember.................... 337
Pressure Cap......................... 336
402 INDEX

Rear Servicing........................ 365
Rear Tail............................ 365
Seat Belt Reminder..................... 173
Security Alarm (Theft Alarm).............. 172
Sentry Key........................... 172
Service.............................. 362
Side Marker.......................... 365
Tire Pressure Monitoring (TPMS)........... 166
Traction Control....................130,175
Transfer Case......................171,172
Transmission Warning................... 171
Turn Signal............... 117,119,166,363,365
Warning (Instrument Cluster Description)..... 166
Loading Vehicle......................... 280
Tires ............................... 249
Locks................................. 26
Automatic Door........................ 29
Child Protection........................ 30
Door.............................. 26,28Power Door........................... 29
Steering Wheel......................... 16
Lower Anchors and Tether for CHildren
(LATCH)............................ 68,69
Lubrication, Body....................... 331
Luggage Carrier......................... 159
Luggage Rack (Roof Rack)................. 159
Maintenance Free Battery.................. 327
Maintenance Procedures................... 320
Maintenance Schedule.................... 370
Schedule “A”......................... 385
Schedule “B”......................... 373
Maintenance Schedules.................... 370
Maintenance, Sunroof..................... 150
Malfunction Indicator Light (Check Engine) . . 168,318
Manual, Service......................... 396
Manual Transmission..................216,344
Fluid Level Check...................... 344
INDEX 409
10

Towing ............................282,311
Disabled Vehicle....................... 311
Guide .............................. 287
Recreational.......................... 296
Weight .............................. 287
Trac-Lok Rear Axle...................... 234
Traction Control......................... 127
Traction Control Light.................... 175
TrailerTowing .......................... 282
Cooling System Tips.................... 296
Hitches............................. 286
Minimum Requirements................. 290
Trailer and Tongue Weight................ 289
Wiring .............................. 293
TrailerTowingGuide ..................... 287
TrailerWeight .......................... 287
Transfer Case........................226,343
Four-Wheel-Drive Operation.............. 226
Maintenance.......................... 343Transmission
Automatic........................221,345
Maintenance.......................344,345
Manual............................. 216
Shifting ............................. 220
Warning Light........................ 171
Transmitter Battery Service
(Remote Keyless Entry).................... 26
Transmitter, Garage Door Opener (HomeLink) . . 143
Transmitter Programming
(Remote Keyless Entry).................... 24
Transporting Pets........................ 73
Tread Wear Indicators.................... 257
Trip Odometer.......................... 170
Turn Signals................... 119,166,363,365
UConnect™ (Hands-Free Phone).............. 85
Underhood Fuses........................ 356
Uniform Tire Quality Grades................ 397
416 INDEX