2013 JEEP WRANGLER UNLIMITED odometer

WARNING! (Continued)• A fire may result if gasoline is pumped into a
portable container that is inside of a vehicle. You
could be burned. Always place gas containers on
the ground while filling.
NOTE:
• When the fuel nozzle “clicks” or shuts off, the fuel tank
is full.
• Tighten the gas cap about 1/4 turn until you hear one
click. This is an indication that the cap is properly
tightened.
• If the gas cap is not tightened properly, the MIL will
come on. Be sure the gas cap is tightened every time
the vehicle is refueled. Loose Fuel Filler Cap Message
After fuel has been added, the vehicle diagnostic system
can determine if the fuel filler cap is possibly loose,
improperly installed, or damaged. If the system detects a
malfunction, the “gASCAP” message will display in the
odometer display. Tighten the gas cap until a  clicking 
sound 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, the message
will appear the next time the vehicle is started. This
might indicate a damaged cap. If the problem is detected
twice in a row, the system will turn on the MIL. Resolving
the problem will turn the MIL off.512 STARTING AND OPERATING

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
 clicking  sound is heard. This is an indication that the562 MAINTAINING YOUR VEHICLE

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 not be 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 563

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 service
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 “Change Oil” or “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).
On Electronic Vehicle Information Center (EVIC) equipped
vehicles, “Oil Change Required” will be displayed in the
EVIC and a single chime will sound, indicating that an oil
change is necessary. 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.
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 refer-
ring to the steps described under “Electronic Vehicle Infor-
mation Center (EVIC)/Oil Change Required” in “Under-
standing Your Instrument Panel” or under “Instrument
Cluster Description/Odometer/Trip Odometer” in “Under-
standing Your Instrument Panel” for further information.
NOTE: Under no circumstances should oil change inter-
vals exceed 10,000 miles (16,000 km) or twelve months,
whichever comes first.
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S 614 MAINTENANCE SCHEDULES

Requirements ........................ .506
Tank Capacity ........................ .610
Fueling ............................... .510
Fuses ................................. .598
Gas Cap (Fuel Filler Cap) .................. .510
Gasoline, Clean Air ....................... .507
Gasoline (Fuel) .......................... .506
Gasoline, Reformulated .................... .507
Gauges
Coolant Temperature ................... .305
Fuel ............................... .300
Odometer ........................... .308
Speedometer ......................... .300
Tachometer .......................... .304
Gear Ranges ............................ .415
Gear Select Lever Override ................. .554
General Information ........................19
Glass Cleaning .......................... .594 Gross Axle Weight Rating .................. .516
Gross Vehicle Weight Rating ................. .515
GVWR ................................ .513
Hands-Free Phone (Uconnect™) ...............114
HardTop.............................. .202
Hard Top, Modular ....................... .202
Hard Top Removal ....................... .210
Hazard Warning Flasher ................... .538
Headlights
Automatic ........................... .168
Bulb Replacement ..................... .607
High Beam .......................... .170
High Beam/Low Beam Select Switch ........ .170
Passing ............................. .170
Replacing ........................... .607
Switch ............................. .167
Head Restraints ......................... .160
Heated Mirrors ...........................113640 INDEX

Master Cylinder (Brakes) ................... .583
Methanol .............................. .507
Mini-Trip Computer ...................... .315
Mirrors .................................111
Electric Powered .......................113
Electric Remote ........................113
Heated ..............................113
Outside ..............................112
Rearview .............................111
Vanity ...............................114
Modifications/Alterations, Vehicle ...............9
Modular Hard Top ....................... .202
Monitor, Tire Pressure System ............... .495
Mopar Parts ............................ .564
MTBE/ETBE ........................... .507
New Vehicle Break-In Period ..................98
Occupant Restraints ........................45 Octane Rating, Gasoline (Fuel) ............... .506
Odometer .............................. .308
Trip ............................... .306
Oil Change Indicator .......................311
Oil Change Indicator, Reset ..................311
Oil, Engine ............................. .566
Capacity ............................ .610
Change Interval ....................... .325
Dipstick ............................ .566
Disposal ............................ .568
Filter .............................. .569
Filter Disposal ........................ .568
Identification Logo ..................... .567
Materials Added to .................... .568
Pressure Warning Light ................. .301
Recommendation ...................... .567
Synthetic ............................ .568
Viscosity ............................ .568
Oil Filter, Selection ....................... .569644 INDEX

Recreational ......................... .532
Weight ............................. .519
Towing Assistance ........................ .130
Trac-Lok Rear Axle ....................... .432
Traction Control ......................... .457
Trailer Sway Control (TSC) ................. .469
Trailer Towing .......................... .515
Cooling System Tips ................... .531
Hitches ............................. .518
Minimum Requirements ................. .525
Trailer and Tongue Weight ............... .524
Wiring ............................. .529
Trailer Towing Guide ...................... .519
Trailer Weight ........................... .519
Transfer Case ........................... .589
Four-Wheel-Drive Operation .............. .428
Maintenance ......................... .589
Transmission ........................... .585
Automatic ........................... .420 Manual ............................. .414
Range Indicator ....................... .306
Shifting ............................. .418
Transmitter Battery Service
(Remote Keyless Entry) ....................27
Tread Wear Indicators ..................... .490
Trip Computer .......................... .315
Trip Odometer .......................... .308
Trip Odometer Reset Button ................. .306
Turn Signals ............................ .169
UCI Connector .......................... .382
Uconnect™ (Hands-Free Phone) ...............114
Uniform Tire Quality Grades ................ .631
Universal Consumer Interface (UCI) Connector . . . .382
Unleaded Gasoline ....................... .506
Untwisting Procedure, Seat Belt ................55
Upholstery Care ......................... .594650 INDEX