2011 JEEP GRAND CHEROKEE 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” (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 drivability. 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)”
in “Understanding Your Instrument Panel” for further
information. Tighten the fuel filler cap properly and press
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MAINTAINING YOUR VEHICLE 485

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. Turn the ignition switch to the ON position, but do not
crank or start the engine.
2. If you crank or start the engine, you will have to start
this test over.
3. As soon as you turn the ignition switch to the ON
position, you will see the MIL symbol come on as part of
a normal bulb check.
486 MAINTAINING YOUR VEHICLE

MAINTENANCE SCHEDULE
The Scheduled Maintenance services listed in this
manual must be done at the times or mileages specified
to protect your vehicle warranty and ensure the 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
anytime a malfunction is suspected.
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
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.
Based on engine operation conditions the oil change
indicator message will illuminate, this means that serviceis required for your vehicle. Have your vehicle serviced
as soon as possible, within the next 500 miles (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.
•Change your engine oil more often if you drive your
vehicle off-road for an extended period of time.
•Under no circumstances should oil change intervals
exceed 8,000 miles (13,000 km) or 6 months, whichever
comes first.
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
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S538 MAINTENANCE SCHEDULES

Cargo Area Cover....................... 234
Cargo Area Features ...................... 231
Cargo Compartment ...................... 231
Light ............................... 233
Cargo Light ............................ 233
Cargo Tie-Downs ........................ 236
Cellular Phone ....................... 121,323
Center High Mounted Stop Light ............ 532
Certification Label ....................... 436
Chains, Tire ............................ 412
Changing A Flat Tire ..................... 463
Chart, Tire Sizing ........................ 395
Check Engine Light
(Malfunction Indicator Light) ............... 486
Checking Your Vehicle For Safety ............. 96
Checks, Safety ........................... 96
Child Restraint .................... 82,83,88,91
Child Restraint Tether Anchors .............86,88
Child Safety Locks ........................ 35 Clean Air Gasoline
....................... 425
Climate Control ......................... 323
Clock ............................. 289,298
Cold Weather Operation ................... 346
Compact Disc (CD) Maintenance ............. 323
Compact Spare Tire ...................... 407
Compass .............................. 277
Compass Calibration ..................... 278
Compass Variance ....................... 279
Computer, Trip/Travel .................... 274
Connector UCI ................................ 313
Universal Consumer Interface (UCI) ......... 313
Conserving Fuel ........................ 273
Console, Overhead ....................... 206
Contract, Service ........................ 557
Cooling System ......................... 502
Adding Coolant (Antifreeze) .............. 504
Coolant Capacity ...................... 533
566 INDEX

Light Bulbs............................ 100
Lights ............................. 100,146
Airbag ...................... 75,76,81,98,248
Anti-Lock ........................... 255
Automatic Headlights ................... 147
Back-Up ............................ 530
Brake Assist Warning ................... 392
Brake Warning ........................ 253
Bulb Replacement ...................... 527
Cargo .............................. 233
Center Mounted Stop ................... 532
Daytime Running ...................... 149
Dimmer Switch, Headlight ............... 146
Electronic Stability Program (ESP) Indicator . . . 392
Exterior ............................. 100
Fog ............................. 250,528
Fuses ............................... 520
Hazard Warning Flasher ................. 462
Headlights ........................... 527 Headlights On With Wipers
............... 147
High Beam Indicator .................... 250
Hill Descent Control Indicator ............. 250
Illuminated Entry ....................... 23
Low Fuel ............................ 268
Malfunction Indicator (Check Engine) ........ 248
Map Reading ......................... 152
Reading .......................... 152,206
Rear Servicing ........................ 530
Rear Tail ............................ 530
Seat Belt Reminder ..................... 253
Security Alarm (Theft Alarm) .............. 256
Service ............................. 527
Service Engine Soon (Malfunction Indicator) . . . 248
Side Marker .......................... 530
SmartBeams .......................... 148
Tire Pressure Monitoring (TPMS) ........... 251
Tow/Haul Indicator .................... 250
Traction Control ....................... 392
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INDEX 573

Turn Signal.................. 100,146,528,530
Vanity Mirror ......................... 111
Loading Vehicle ......................... 436
Tires ............................... 399
Locks ................................. 33
Child Protection ........................ 35
Door ................................ 33
Power Door ........................... 34
Lower Anchors and Tether for CHildren
(LATCH) ............................ 86,88
Lubrication, Body ....................... 496
Maintenance Free Battery .................. 493
Maintenance Procedures ................... 488
Maintenance Schedule .................... 538
Malfunction Indicator Light (Check Engine) . . 248,486
Manual, Service ......................... 559
Memory Feature (Memory Seat) ............. 140
Memory Seat ........................... 140 Memory Seats and Radio
.................. 140
Methanol ............................. 425
Mini-Trip Computer ...................... 274
Mirrors ............................... 108
Compass/Temperature .................. 109
Electric Powered ....................... 110
Electric Remote ....................... 110
Exterior Folding ....................... 110
Heated .............................. 111
Outside ............................. 110
Rearview ............................ 108
Vanity .............................. 111
Mode Fuel Saver ........................... 273
Modifications/Alterations, Vehicle ............. 9
Monitor, Tire Pressure System ............... 415
MOPAR Accessories ................... 487,558
MTBE/ETBE ........................... 425
Multi-Displacement Engine System ........... 379
574 INDEX

Schedule, Maintenance.................... 538
Seat Belt Reminder ....................... 65
Seat Belts ............................ 52,98
Adjustable Upper Shoulder Anchorage ........ 57
And Pregnant Women ................... 67
Child Restraint ....................... 82,91
Extender ............................. 67
Front Seat ............................ 52
Inspection ............................ 98
Maintenance ......................... 519
Pretensioners .......................... 61
Reminder ............................ 253
Shoulder Belt Anchorage ................. 57
Untwisting Procedure .................... 57
Seats ................................. 121
Adjustment .......................... 126
Cleaning ............................ 518
Easy Entry ........................... 143
Memory ............................ 140 Power
........................... 122,124
Rear Folding ......................... 137
Reclining ............................ 127
Security Against Theft ..................... 21
Security Alarm (Theft Alarm) .............21,256
Selec-Terrain ........................... 363
Selection of Oil ......................... 490
Sentry Key (Immobilizer) ................... 19
Sentry Key Programming ................... 20
Sentry Key Replacement ................... 20
Service Assistance ....................... 555
Service Contract ......................... 557
Service Engine Soon Light
(Malfunction Indicator) .................... 248
Service Manuals ........................ 559
Setting the Clock ..................... 289,298
Settings, Personal ........................ 280
Shift Lever Override ...................... 476
578 INDEX

Snow Tires........................... 413
Spare Tire ........................... 464
Spinning ............................ 409
Tread Wear Indicators ................... 410
Wheel Mounting ...................... 470
Tongue Weight/Trailer Weight .............. 445
Torque Converter Clutch .................. 356
Tow Hooks, Emergency ................... 475
Tow/Haul Indicator Light ................. 250
Towing ............................ 438,477
Disabled Vehicle ....................... 477
Guide .............................. 444
Recreational .......................... 453
Weight .............................. 444
Traction Control ......................... 382
Trailer Sway Control (TSC) ................. 387
Trailer Towing .......................... 438
Cooling System Tips .................... 452
Hitches ............................. 443 Minimum Requirements
................. 446
Trailer and Tongue Weight ............... 445
Wiring .............................. 449
Trailer Towing Guide ..................... 444
Trailer Weight .......................... 444
Transfer Case ........................... 510
Maintenance ......................... 510
Transmission Automatic ........................ 350,511
Maintenance .......................... 511
Shifting ............................. 349
Transmitter Battery Service
(Remote Keyless Entry) .................... 26
Transmitter Programming
(Remote Keyless Entry) .................... 23
Transmitter, Garage Door Opener (HomeLink®) . . 208
Transmitter, Remote Keyless Entry (RKE) ........ 23
Tread Wear Indicators .................... 410
Turn Signals ...................... 250,528,530
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INDEX 581