2013 JEEP WRANGLER check engine light

gas cap is properly tightened. Press the odometer reset
button to turn the message off. If the problem persists,
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. Cycle 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 cycle 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 571

CAUTION!
If the fluid temperature is below 50° F (10° C), it may
not register on the dipstick. Do not add fluid until
the temperature is elevated enough to produce an
accurate reading. Run the engine at idle, in PARK, to
warm the fluid.
7. Check for leaks. Release the parking brake.
NOTE: To prevent dirt and water from entering the
transmission after checking or replenishing fluid, make
sure that the dipstick cap is properly reseated. It is
normal for the dipstick cap to spring back slightly from
its fully seated position, as long as its seal remains
engaged in the dipstick tube.
Fluid And Filter Changes
Refer to the “Maintenance Schedule” for the proper
maintenance intervals. In addition, change the fluid and filter if the transmission
is disassembled for any reason.
Clutch Hydraulic System (Manual Transmission) –
If Equipped
The clutch hydraulic system is fed by a segregated
volume of fluid within the brake system master cylinder
reservoir. In the event of leakage or wear, use only the
manufacturer’s recommended brake fluid. Refer to “Flu-
ids, Lubricants, and Genuine Parts” in “Maintaining Your
Vehicle” for further information.
Manual Transmission – If Equipped
Selection Of Lubricant
Use only manufacturer’s recommended manual transmis-
sion fluid. Refer to “Fluids, Lubricants, and Genuine Parts”
in “Maintaining Your Vehicle” for further information.
7
MAINTAINING YOUR VEHICLE 597

NOTE:Under no circumstances should oil change inter-
vals exceed 10,000 miles (16,000 km) or twelve months,
whichever comes first.
Once A Month Or Before A Long Trip:
• Check engine oil level
• Check windshield washer fluid level
• Check the tire inflation pressures and look for unusual
wear or damage
• Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering and transmission 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 irregu-
lar wear, even if it occurs before the oil indicator
system turns on.
• Inspect battery and clean and tighten terminals as
required
• Inspect automatic transmission fluid if equipped
with dipstick
• 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 conditions
• Inspect all door latches for presence of grease,
reapply if necessary.
8
M
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SMAINTENANCE SCHEDULES 623

Cellular Phone...........................115
Center High Mounted Stop Light ..............617
Certification Label ........................ .519
Chains, Tire ............................ .499
Changing A Flat Tire ...................... .547
Chart, Tire Sizing ........................ .477
Check Engine Light (Malfunction Indicator Light) . .315
Checking Your Vehicle For Safety ..............100
Checks, Safety .......................... .100
Child Restraint ............................75
Child Safety Locks .........................42
Clean Air Gasoline ....................... .513
Cleaning Wheels .............................. .602
Climate Control ......................... .395
Clock ................................. .341
Cold Weather Operation ....................416
Compact Disc (CD) Maintenance ..............394
Compact Spare Tire ....................... .493Compass
.............................. .319
Compass Calibration ...................... .322
Compass Variance ........................ .321
Computer, Trip/Travel ..................... .319
Connector UCI................................ .386
Universal Consumer Interface (UCI) ..........386
Console ............................... .191
Console, Floor .......................... .191
Contract, Service ......................... .636
Coolant Pressure Cap (Radiator Cap) ...........589
Cooling System .......................... .586
Adding Coolant (Antifreeze) ...............588
Coolant Capacity ...................... .618
Coolant Level ......................... .591
Disposal of Used Coolant .................590
Drain, Flush, and Refill ...................587
Inspection ........................... .587
Points to Remember .....................591
646 INDEX

Extender, Seat Belt.........................61
Exterior Lights .......................... .103
Fabric Care ............................. .603
Fabric Top ............................. .604
Filters Air Cleaner .......................... .577
Air Conditioning ...................... .407
Engine Oil ........................... .576
Engine Oil Disposal .....................576
Flashers Hazard Warning ....................... .546
Turn Signal .......................... .103
Flash-To-Pass ........................... .172
Flooded Engine Starting ....................416
Fluid Capacities ......................... .618
Fluid Leaks ............................ .104
Fluid Level Checks ....................... .599
Engine Oil ........................... .574Manual Transmission
....................598
Power Steering ........................ .456
Fluids, Lubricants and Genuine Parts ...........619
Fog Lights ............................. .172
Fog Light Service ........................ .616
Fold and Tumble Rear Seat ..................163
Folding Rear Seat ........................ .165
Folding Windshield ....................... .290
Four-Way Hazard Flasher ...................546
Four Wheel Drive ........................ .433
Four Wheel Drive Operation .................433
Freeing A Stuck Vehicle .....................559
Front Axle (Differential) .....................599
Fuel .................................. .513
Adding ............................. .517
Additives ............................ .515
Clean Air ............................ .513
Ethanol ............................. .514
Filler

Cap (Gas Cap) .....................517
10
INDEX 649

Jack Operation.......................... .547
Jump Starting ........................... .555
Key-In Reminder ..........................16
Keyless Entry System .......................24
Key, Programming .........................20
Key, Replacement ..........................19
Keys ...................................15
Key, Sentry (Immobilizer) ....................18
Lane Change and Turn Signals ................305
Lane Change Assist ....................... .171
Lap Belts ................................50
Lap/Shoulder Belts .........................50
Latches ............................... .104
Lead Free Gasoline ....................... .513
Leaks, Fluid ............................ .104
Life of Tires ............................ .496
Light Bulbs ............................. .103Lights
................................ .103
Airbag ................................73
Alarm .............................. .309
Anti-Lock ............................ .307
Anti-Lock Warning ..................... .307
Automatic Headlights ....................170
Back-Up ............................. .617
Brake Assist Warning ....................472
Brake Warning ........................ .306
Bulb Replacement ...................... .615
Cargo .............................. .174
Center Mounted Stop ....................617
Check Engine (Malfunction Indicator) .........315
Cruise .............................. .310
Daytime Running ...................... .173
Electronic Stability Program (ESP) Indicator .....472
Electronic Throttle Control Warning ..........318
Exterior ............................. .103
Fog ................................ .172
652 INDEX

Maintenance Schedule..................... .622
Malfunction Indicator Light (Check Engine) .......315
Manual, Service ......................... .638
Manual Transmission ..................... .418
Fluid Level Check ...................... .598
Lubricant Selection ..................... .597
Shift Speeds .......................... .419
Master Cylinder (Brakes) ....................593
Methanol .............................. .514
Mini-Trip Computer ...................... .319
Mirrors .................................111
Automatic Dimming .....................113
Electric Powered ........................114
Electric Remote .........................114
Heated ...............................114
Outside ..............................112
Rearview .............................111
Vanity ...............................115
Modifications/Alterations, Vehicle ...............9Modular Hard Top
....................... .206
Monitor, Tire Pressure System ................501
Mopar Parts ............................ .572
MTBE/ETBE ........................... .514
New Vehicle Break-In Period ..................99
Occupant Restraints ........................47
Octane Rating, Gasoline (Fuel) ................513
Odometer .............................. .312
Trip ................................ .310
Oil Change Indicator ...................... .315
Oil Change Indicator, Reset ..................315
Oil, Engine ............................. .574
Capacity ............................ .618
Change Interval ....................... .329
Dipstick ............................. .574
Disposal ............................. .576
Filter ............................... .576
654 INDEX