check engine light JEEP WRANGLER 2009 Owners Manual

To Manually Lock the Steering Wheel
With the engine running, rotate the steering wheel one–
half revolution from the straight ahead position, turn off
the engine, and remove the key. Rotate the steering wheel
slightly in both directions until the lock engages.
To Release the Steering Wheel Lock
Insert the key in the ignition, and turn the wheel slightly
to the left or right, to disengage the lock.
NOTE:If you turned the wheel to the right to engage
the lock, you must turn the wheel slightly to the right to
disengage it. If you turned the wheel to the left to engage
the lock, turn the wheel slightly to the left to disengage it.
SENTRY KEY
The Sentry Key Immobilizer System prevents unautho-
rized vehicle operation by disabling the engine. The
system does not need to be armed or activated. Operation
is automatic, regardless of whether the vehicle is locked
or unlocked. The system uses ignition keys that have an embedded
electronic chip (transponder) to prevent unauthorized
vehicle operation. Therefore, only keys that are pro-
grammed to the vehicle can be used to start and operate
the vehicle. The system will shut the engine off in two
seconds if someone uses an invalid key to try to start the
engine.
NOTE:
A key that has not been programmed is also
considered an invalid key, even if it is cut to fit the
ignition switch lock cylinder for that vehicle.
During normal operation, after turning on the ignition
switch, the Vehicle Security Light will turn on for three
seconds for a bulb check. If the light remains on after the
bulb check, it indicates that there is a problem with the
electronics. In addition, if the Vehicle Security Light
begins to flash after the bulb check, it indicates that
14 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Airbag Warning Light
The light should come on and remain on for six to eight
seconds as a bulb check when the ignition switch is first
turned ON. If the light is not lit during starting, see your
authorized dealer. If the light stays on, flickers, or comes
on while driving, have the system checked by an autho-
rized dealer.
Defroster
Check operation by selecting the defrost mode and place
the blower control on high speed. You should be able to
feel the air directed against the windshield. See your
authorized dealer for service if your defroster is
inoperable.
Periodic Safety Checks You Should Make Outside
the Vehicle
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objectslodged in the tread. Inspect the tread and sidewall for
cuts and cracks. Check the wheel nuts for tightness.
Check the tires (including spare) for proper pressure.
Lights
Have someone observe the operation of exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Door Latches
Check for positive closing, latching, and locking.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
engine coolant, oil, or other fluid leaks. Also, if gasoline
fumes are detected or if fuel, power steering fluid, or
brake fluid leaks are suspected, the cause should be
located and corrected immediately.
76 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

INSTRUMENT CLUSTER DESCRIPTION
1. Fuel Gauge
The pointer shows the level of fuel in the fuel tank.
NOTE:When the ignition switch is turned to OFF, the
fuel gauge, voltmeter, oil pressure and temperature
gauges may not show accurate readings. When the
engine is not running, turn the ignition switch to ON to
obtain accurate readings.
2. Charging System Light This light shows the status of the electrical charg-
ing system. The light should come on when the
ignition switch is first turned ON, and remain on briefly
as a bulb check. If the light stays on or comes on while
driving, turn off some of the vehicle’s non-essential
electrical devices or increase engine speed (if at idle). If
the charging system light remains on, it means that the vehicle is experiencing a problem with the charging
system. Obtain SERVICE IMMEDIATELY. See an autho-
rized dealer.
If jump starting is required, refer to “Jump Starting
Procedures” in section 6 of this manual.
3. Front Fog Light Indicator — If Equipped
This indicator will illuminate when the front fog
lights are on.
4. Low Fuel Warning Light When the fuel level reaches approximately 2.8 gal
(10.6L) this light will turn on and a single chime
will sound.
5. Speedometer
Indicates vehicle speed.

13. Airbag Warning LightThis indicator lights and remains lit for six to
eight seconds when the ignition is first turned
on. If the light does not come on for six to eight
seconds, stays on or comes on while driving,
have the airbag system checked by an authorized dealer.
14. Rear Axle Lock Indicator — If Equipped This light indicates when the rear axle lock has
been activated.
15. Tachometer
Indicates the engine speed in revolutions per minute
(RPM).

NOTE:If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary repeat this procedure.
25. Malfunction Indicator Light (MIL) The Malfunction Indicator Light (MIL) is a part of
an Onboard Diagnostic System called OBD II that
monitors engine and automatic transmission con-
trol systems. The light will illuminate when the ignition
is in the ON position, before engine start. If the bulb does
not come on when turning the key from OFF to ON, have
the condition checked promptly.
Certain conditions such as a loose or missing gas cap,
poor quality fuel, etc. may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several typical driving styles. In most
situations, the vehicle will drive normally and will not
require towing.

WARNING!
If a warning light remains on the system may not be
working and you will not have the benefit of ESP or
BAS. Under certain driving conditions, where ESP or
BAS would be beneficial, you - if you have not
adjusted your driving speeds and stopping in or to
account for the lack of the feature, may be in acci-
dent.
30. Electronic Throttle Control (ETC) Light This light informs you of a problem with the
Electronic Throttle Control (ETC) system. If a
problem is detected while the engine is run-
ning, the light will either stay on or flash
depending on the nature of the problem. Cycle the
ignition key when the vehicle is safely and completely
stopped and the shift lever is placed in the PARK
position. The light should turn off. If the light remains on with the engine running, your vehicle will usually be
drivable; however, see an authorized dealer for service as
soon as possible.
If the light continues to flash when the engine is running,
immediate service is required and you may experience
reduced performance, an elevated/rough idle, or engine
stall and your vehicle may require towing. The light will
come on when the ignition is first turned ON and remain
on briefly as a bulb check. If the light does not come on
during starting, have the system checked by an autho-
rized dealer.
31. Compass / Mini-Trip Computer Display — If
Equipped
When the appropriate conditions exist, this display
shows the Mini-Trip Computer messages. Refer to “Mini-
Trip Computer” later in this section.

ABS (Anti-Lock Brake System)............203,316
Adding Fuel ........................... 361
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 409
Air Conditioner Maintenance ............... 410
Air Conditioning ..................... 266,269
Air Conditioning Controls ................. 269
Air Conditioning, Operating Tips ............ 270
Air Conditioning Refrigerant ................ 411
Air Conditioning System .................. 269
Air Filter .............................. 409
Air Pressure, Tires ....................... 343
Airbag ................................ 48
Airbag Deployment ....................... 56
Airbag Light ....................... 58,76,204
Airbag Maintenance ....................... 58
Airbag, Side ............................ 55
Alarm Light ........................... 204
Alarm (Security Alarm) .................... 17
Alterations/Modifications, Vehicle ............. 8Antenna, Satellite Radio
................... 259
Antifreeze (Engine Coolant) ................ 447
Anti-Lock Brake System (ABS) ............316,319
Anti-Lock Warning Light .................. 203
Appearance Care ........................ 428
Arming Theft System (Security Alarm) ......... 18
Auto Down Power Windows ................ 36
Automatic Transmission ................... 423
Fluid and Filter Changes ................. 423
Fluid Level Check ..................... 424
Fluid Type ........................... 423
Gear Ranges ......................... 288
Shifting ............................. 287
Special Additives ...................... 425
Torque Converter ...................... 291
Auxiliary Electrical Outlet (Power Outlet) ...... 106
Auxiliary Power Outlet ................... 106
Axle Lock .......................... 296,297
482 INDEX

Fuel Requirements.................. 356,447
Jump Starting ......................... 394
Oil .............................. 406,447
Oil Disposal .......................... 408
Oil Filter ............................ 408
Oil Selection .......................... 447
Overheating .......................... 388
Starting ............................. 277
Temperature Gauge .................... 204
Engine Oil Viscosity ...................... 408
Engine Oil Viscosity Chart ................. 408
Enhanced Accident Response Feature .......... 57
Entry System, Illuminated .................. 19
Event Data Recorder ...................... 59
Exhaust Gas Caution ................... 74,360
Exhaust System ....................... 74,413
Extender, Seat Belt ........................ 48
Exterior Finish Care ...................... 429
Exterior Lights .......................... 76 Fabric Care
......................... 432,433
Fabric Top ............................. 433
Filters Air Cleaner .......................... 409
Engine Oil ........................... 408
Finish Care ............................ 429
Flashers Hazard Warning ....................... 388
Turn Signal ................... 76,201,445,446
Flooded Engine Starting ................... 278
Fluid Capacities ......................... 447
Fluid Leaks ............................. 76
Fluid Level Checks ...................... 427
Automatic Transmission ................. 423
Engine Oil ........................... 406
Manual Transmission ................... 426
Power Steering ........................ 314
Fluids, Lubricants and Genuine Parts .......... 448
Fog Light Service ........................ 445
486 INDEX