service indicator JEEP WRANGLER 2011 JK / 3.G User Guide

Poor quality gasoline can cause problems such as hard
starting, stalling and hesitations. If you experience these
symptoms, try another brand of gasoline before consid-
ering service for the vehicle.
Over 40 auto manufacturer’s worldwide have issued and
endorsed consistent gasoline specifications (the World-
wide Fuel Charter, WWFC) to define fuel properties
necessary to deliver enhanced emissions, performance,
and durability for your vehicle. The manufacturer recom-
mends the use of gasoline that meets the WWFC speci-
fications if they are available.
Reformulated Gasoline
Many areas of the country require the use of cleaner
burning gasoline referred to as “Reformulated Gasoline.”
Reformulated gasoline contains oxygenates, and are spe-
cifically blended to reduce vehicle emissions and im-
prove air quality.The manufacturer supports the use of reformulated gaso-
line. Properly blended reformulated gasoline will pro-
vide excellent performance and durability for the engine
and fuel system components.
Gasoline/Oxygenate Blends
Some fuel suppliers blend unleaded gasoline with oxy-
genates such as Ethanol. Fuels blended with oxygenates
may be used in your vehicle.
CAUTION!
DO NOT use gasoline containing Methanol or gaso-
line containing more than 10% Ethanol. Use of these
blends may result in starting and driveability prob-
lems, damage critical fuel system components, cause
emissions to exceed the applicable standard, and/or
cause the “Malfunction Indicator Light” to illumi-
nate. Pump labels should clearly communicate if a
fuel contains greater than 10% Ethanol.
5
STARTING AND OPERATING 453

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
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is possibly loose, improp-
erly installed, or damaged. A “gASCAP” message will be
displayed in the odometer. Tighten the gas cap until a
clickingsound is heard. This is an indication that the
gas cap is properly tightened. Press the odometer reset
button to turn the message off. If the problem persists,
506 MAINTAINING YOUR VEHICLE

the message will appear the next time the vehicle is
started. This might indicate a damaged cap. If the prob-
lem is detected twice in a row, the system will turn on the
MIL. Resolving the problem will turn the MIL off.
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.
7
MAINTAINING YOUR VEHICLE 507

CAUTION! (Continued)
•When replacing a blown fuse, it is important to
use only a fuse having the correct amperage rating.
The use of a fuse with a rating other than indicated
may result in a dangerous electrical system over-
load. If a properly rated fuse continues to blow, it
indicates a problem in the circuit that must be
corrected.
VEHICLE STORAGE
If you are leaving your vehicle dormant for more than
21 days, you may want to take steps to protect your
battery. You may:
•Remove Cartridge fuse #J13 in the Power Distribution
Center (PDC) labeled Ignition-Off Draw (IOD) and
store it in a safe location within the PDC.
•Or, disconnect the negative cable from the battery.
•Anytime you store your vehicle, or keep it out of
service (i.e., 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
Interior LightsBulb Type
Auto. Trans. Indicator Lamp ................. 658
Heater Control Lamps (2) ................... 194
Rocker Switch Indicator Lamp
(Rear Window Defogger, and Rear Wash/Wipe) .... **
Soundbar Dome Lamp ..................... 912
** Bulbs only available from authorized dealer.
7
MAINTAINING YOUR VEHICLE 545

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 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.
Based on engine operation conditions the oil change
indicator message will illuminate, this means that service
is 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 vehicle’s
oil if it has been six months since your last oil change
even if the oil change indicator message is NOT
illuminated.
•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 six months, which-
ever comes first.
Your dealer will reset the oil change indicator message
after completing the scheduled oil change. If this sched-
uled oil change is performed by someone other than your
dealer, the message can be reset by referring to the steps
described under “Instrument Cluster Description/
Odometer/Trip Odometer” in “Understanding Your In-
strument Panel” for further information.
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S554 MAINTENANCE SCHEDULES

Check Engine Light
(Malfunction Indicator Light).............277,507
Checking Your Vehicle For Safety ............. 85
Checks, Safety ........................... 85
Child Restraint .................... 71,72,78,81
Child Restraint Tether Anchors .............76,78
Child Safety Locks ........................ 38
Child Seat .............................. 75
Climate Control ......................... 351
Clock ........................... 300,318,328
Compact Disc (CD) Maintenance ............. 350
Compact Spare Tire ...................... 440
Compass ........................ 281,285,292
Compass Calibration .................. 285,293
Compass Variance .................... 284,293
Computer, Trip/Travel .................281,290
Connector UCI .............................. 342
Universal Consumer Interface (UCI) ....... 342Console
.............................. 169
Console, Floor .......................... 169
Contract, Service ........................ 575
Cooling System ......................... 520
Adding Coolant (Antifreeze) ............. 522
Coolant Capacity ..................... 549
Coolant Level ....................... 524
Disposal of Used Coolant ............... 523
Drain, Flush, and Refill ................ 521
Inspection .......................... 520
Points to Remember .................. 524
Pressure Cap ........................ 523
Selection of Coolant (Antifreeze) .......521,549
Corrosion Protection ..................... 532
Cruise Light ........................... 272
Cupholders ............................ 168
Customer Assistance ..................... 573
584 INDEX

Instrument Cluster................... 150
Interior ............................ 154
Lights On Reminder .................. 152
Low Fuel .......................... 266
Oil Pressure ........................ 267
Passing ............................ 152
Rear Servicing ....................... 548
Rear Tail ........................... 548
Seat Belt Reminder ................... 266
Security Alarm (Theft Alarm) ............ 271
Service ............................ 546
Side Marker ........................ 548
Theft Alarm (Security Alarm) ............ 271
Tire Pressure Monitoring (TPMS) ......... 272
Traction Control ..................... 422
Turn Signal .............. 89,151,267,547,548
Voltage ............................ 266
Warning (Instrument Cluster Description) . . . 266 Loading Vehicle
......................... 459
Tires .............................. 431
Locking Axle ........................... 388
Locks Automatic Door ...................... 35
Child Protection ...................... 38
Door .............................. 34
Power Door ......................... 34
Lower Anchors and Tether for CHildren
(LATCH) ............................ 76,78
Lubrication, Body ....................... 515
Maintenance Free Battery .................. 513
Maintenance Procedures ................... 509
Maintenance Schedule .................... 554
Malfunction Indicator Light (Check Engine) . . 277,507
Manual Transmission .................. 373,530
Fluid Level Check .................... 530
Lubricant Selection ................... 530
10
INDEX 591

Shift Speeds........................ 375
Manual, Service ......................... 577
Master Cylinder (Brakes) .................. 526
Methanol ............................. 453
Mini-Trip Computer ................... 281,290
Mirrors ................................ 96
Electric Powered ...................... 98
Electric Remote ....................... 98
Outside ............................ 97
Rearview ........................... 96
Vanity ............................. 98
Modifications/Alterations, Vehicle ............. 9
Modular Hard Top ....................... 176
Monitor, Tire Pressure System ............... 447
Mopar Parts ......................... 508,576
MTBE/ETBE ........................... 453
Multi-Function Control Lever ............... 149
New Vehicle Break-In Period ................ 85Occupant Restraints
....................... 43
Octane Rating, Gasoline (Fuel) .............. 452
Odometer .......................... 274,281
Trip ........................ 272,274,281
Off-Pavement Driving (Off-Road) ............ 392
Off-Road Driving (Off-Pavement) ............ 392
Oil Change Indicator .................. 276,289
Oil Change Indicator, Reset ..............276,289
Oil Pressure Light ....................... 267
Oil, Engine ............................ 510
Capacity ........................... 549
Change Interval ..................... 289
Dipstick ........................... 510
Filter ............................. 512
Identification Logo ................... 511
Materials Added to ................... 512
Pressure Warning Light ................ 267
Recommendation .................. 51 1,549
Viscosity ........................ 51 1,549
592 INDEX

Towing............................ 461,498
24-Hour Towing Assistance ............. 114
Disabled Vehicle ..................... 498
Guide ............................. 465
Recreational ........................ 478
Weight ............................ 465
Towing Assistance ....................... 114
Trac-Lok Rear Axle ...................... 387
Traction Control ......................... 411
Trailer Sway Control (TSC) ................. 423
Trailer Towing .......................... 461
Cooling System Tips .................. 477
Hitches ......................... 452,464
Minimum Requirements ................ 471
Trailer and Tongue Weight .............. 470
Wiring ............................ 474
Trailer Towing Guide ..................... 465
Trailer Weight .......................... 465 Transfer Case
........................... 531
Four-Wheel-Drive Operation ............ 383
Maintenance ........................ 531
Transmission Automatic ......................... 378
Maintenance ..................... 527,530
Manual ........................... 373
Range Indicator ...................... 272
Shifting ........................... 377
Transmitter Battery Service
(Remote Keyless Entry) .................... 25
Transporting Pets ........................ 84
Tread Wear Indicators .................... 442
Trip Computer .......................... 281
Trip Odometer .......................... 274
Trip Odometer Reset Button ................ 272
Turn Signals ................... 151,267,547,548
598 INDEX