2005 JEEP WRANGLER check engine light

keys that have been programmed to the vehicle can be
used to start and operate the vehicle for longer than the
2 second validation time period.
The Sentry Key Immobilizer System does not need to be
armed or activated. Operation of the system is automatic
regardless of whether or not the vehicle is locked or
unlocked. During normal operation, the SKIS indicator
light will come on for 3 seconds immediately after the
ignition switch is turned on for a bulb check. Afterwards,
if the bulb remains on, this indicates a malfunction in the
electronics. If the bulb begins to flash immediately after
the ignition switch is turned on, this indicates that an
invalid key is being used to start the vehicle. Both of
these conditions will result in the engine being shut
down after 2 seconds of running. Keep in mind that a key
which has not been programmed is also considered an
invalid key even if it is cut to fit the ignition for that
vehicle.If the SKIS indicator light comes on during normal
vehicle operation (it has been running for longer than 10
seconds) a fault has been detected in the electronics and
the vehicle should be serviced as soon as possible.
NOTE:
•The Sentry Key Immobilizer System is not compatible
with remote starting systems. Use of these systems
may result in vehicle starting problems and loss of
security protection.
•Mobil Speedpass™, additional Sentry Keys, or any
other transponder equipped components on the same
keychain will not cause a key-related (Transponder)
fault unless the additional part isphysically held
against the ignition keybeing used when starting the
vehicle. Also, cell phones, pagers, or other RF electron-
ics will not cause interference with this system.
All of the keys provided with your new vehicle have
been programmed to the vehicle electronics.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 15
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garage, and never sit in a parked vehicle with the
engine running for a extended period. If the vehicle is
stopped in an open area with engine running for more
than a short period, adjust the ventilation system to
force fresh, outside air into the vehicle.
•Guard against carbon monoxide with proper mainte-
nance. Have the exhaust system inspected every time
the vehicle is raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with all side
windows fully open.
•Always run the climate control in panel or floor mode
when driving with any windows open, even if only
slightly, to help keep fresh air circulating inside ve-
hicle. Otherwise poisonous gases could be drawn into
the vehicle.
•On hardtop models, keep the tailgate window closed
when driving your vehicle. On fabric top models, do
not drive with the rear window curtain up unless theside curtains are also open. This will prevent carbon
monoxide and other poisonous exhaust gases from
entering the vehicle.
Safety Checks You Should Make Inside The
Vehicle
Seat Belts
Inspect the belt system periodically, checking for cuts,
frays and loose parts. Damaged parts must be replaced
immediately. Do not disassemble or modify the system.
Seat belt assemblies must be replaced after an accident if
they have been damaged (bent retractor, torn webbing,
etc.). If there is any question regarding belt or retractor
condition, replace the belt.
Airbag Warning Light
The light should come on and remain on for 6 to 8
seconds as a indicator check when the ignition switch is
first turned on. If the indicator is not lit during starting,
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 45
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13. Oil Pressure Gauge
Indicates engine oil pressure. This gauge does not
indicate oil level, and pressure varies with engine
speed, temperature and oil viscosity. Consistent lower
readings indicate possible malfunction. Seek authorized
service.
14. Coolant Temperature Gauge
Indicates engine coolant temperature. The red
zone to the far right indicates possible overheat-
ing. Seek authorized service immediately if the
gauge operates in the red zone. In U.S. vehicles, tempera-
ture is indicated in degrees fahrenheit; in Canadian
vehicles in degrees centigrade.
15. Airbag Warning Light
This indicator lights and remains lit for 6 to 8
seconds when the ignition is first turned on. If
the light does not come on for 6 to 8 seconds,stays on or comes on while driving, have the airbag
system checked by an authorized dealer.
16. Check Gauges Warning Light
This light monitors the engine coolant tem-
perature, engine oil pressure, and voltage
gauges. If it detects an extreme condition a
chime will sound and the light will come on. If the light
comes on, check the operation of these gauges for a
malfunction condition.
17. Malfunction Indicator Light
This light is a part of an Onboard Diagnostic
System called OBD II that monitors engine, and
automatic transmission control 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.
UNDERSTANDING YOUR INSTRUMENT PANEL 145
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JUMP STARTING
WARNING!
To prevent personal injury or damage to clothing, do
not allow battery fluid to contact eyes, skin, or
fabrics. Do not lean over a battery when connecting
jumper cables or allow cable clamps to touch each
other. Keep open flames or sparks away from battery
vent holes. Always wear eye protection when work-
ing with batteries. Do not use a booster battery or
any other booster source that has a greater than
12–volt system, i.e. do not use a 24–volt power
source.
Your vehicle is equipped with a 12–volt battery. If it
becomes necessary to use a booster battery, with jumper
cables, to start the vehicle’s engine because it’s battery is
discharged, the following procedure should be followed:Set the parking brake, place an automatic transmission in
P (Park) (or N (Neutral) for a manual transmission). Turn
off lights, heater, and other electrical loads. Observe
charge indicator in the battery. If indicator is light or
yellow, replace the battery.
CAUTION!
Use the “Jump Starting” procedure only when the
charge indicator is dark in the center. Do not attempt
jump starting when the battery charge indicator is
bright or yellow. If the charge indicator is dark and
has a green dot in the center, failure to start is not
due to a discharged battery and the cranking system
should be checked.
242 WHAT TO DO IN EMERGENCIES

Once a Month
•Check the tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of the coolant reservoir, brake
master cylinder, and transmission, and add as needed.
•Check all lights and all other electrical items for correct
operation.
At Each Oil Change
•Change the engine oil filter.
•Inspect the exhaust system.
•Inspect brake hoses.
•Check the coolant level, hoses, and clamps.
•Inspect manual transmission fluid level — if
equipped.
•After completion of off-road operation, the underside
of the vehicle should be thoroughly inspected. Exam-
ine threaded fasteners for looseness.
302 MAINTENANCE SCHEDULES
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About Your Brakes....................... 198
ABS (Anti-Lock Brake) System............147,200
Add-A-Trunk........................... 72
Adding Washer Fluid..................... 138
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . 260
Air Conditioner Maintenance............... 262
Air Conditioning........................ 171
Air Conditioning Controls................. 172
Air Conditioning, Operating Tips............ 174
Air Conditioning Refrigerant............... 263
Air Filter.............................. 260
Air Pressure, Tires....................... 216
Airbag................................ 27
Airbag Deployment....................... 31
Airbag Light.........................33,145
Airbag Maintenance....................... 33
Alignment and Balance................... 220
Alterations/Modifications, Vehicle............. 9
Antenna, Satellite Radio................... 167Antifreeze (Engine Coolant)................ 295
Anti-Lock Brake System (ABS).............. 200
Anti-Lock Warning Light.................. 147
Appearance Care........................ 279
Automatic Dimming Mirror................. 50
Automatic Transmission................184,274
Adding Fluid......................... 276
Fluid and Filter Changes................. 274
Fluid Level Check...................... 275
Fluid Type........................... 274
Gear Ranges.......................... 185
Shifting............................. 184
Special Additives...................... 276
Torque Converter...................... 190
Auxiliary Electrical Outlet.................. 69
Auxiliary Power Outlet.................... 69
Battery............................... 261
Emergency Starting..................... 242
332 INDEX

Voltmeter............................ 143
Belts, Drive............................ 257
Belts, Seat.............................. 20
Body Mechanism Lubrication............... 264
B-Pillar Location........................ 211
Brake System........................... 272
Anti-Lock........................... 200
Hoses.............................. 272
Master Cylinder....................... 273
Parking............................. 196
Warning Light........................ 147
Brakes............................... 198
Brake/Transmission Interlock............... 185
Break-In Recommendations, New Vehicle........ 44
Bulb Replacement.....................290,291
Calibration, Compass...................... 52
Capacities, Fluid........................ 295Caps, Filler
Fuel................................ 226
Power Steering........................ 263
Car Washes............................ 280
Carbon Monoxide Warning................. 225
Carpeting............................. 283
Cassette Tape and Player Maintenance......... 167
Catalytic Converter...................... 258
Caution, Exhaust Gas...................... 44
CD Changer........................... 154
CD Player....................150,152,156,159
CD Player Maintenance................... 168
Cellular Phone.......................... 169
Center High Mounted Stop Light............ 294
Chains, Tire............................ 221
Changing A Flat Tire..................... 238
Chart, Tire Sizing........................ 208
Check Engine Light
(Malfunction Indicator Light)...........145,251
INDEX 333
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Oil Filter............................ 257
Oil Pressure Gauge..................... 145
Oil Selection.......................... 295
Overheating.......................... 237
Starting............................. 178
Temperature Gauge..................... 145
Engine Oil Viscosity...................... 256
Engine Oil Viscosity Chart................. 256
Entry System, Illuminated.................. 17
Exhaust Gas Caution...................44,225
Exhaust System......................... 266
Extender, Seat Belt........................ 26
Exterior Finish Care...................... 280
Fabric Care.........................280,283
Fabric Top............................. 280
Filters
Air Cleaner.......................... 260
Engine Fuel.......................... 260Engine Oil........................... 257
Finish Care............................ 280
Flashers
Hazard Warning....................... 236
Turn Signal.....................143,292,294
Flooded Engine Starting................... 179
Fluid Capacities......................... 295
Fluid Level Checks...................... 278
Automatic Transmission................. 274
Engine Oil........................... 253
Manual Transmission................... 276
Power Steering........................ 263
Fog Light Service........................ 292
Fog Lights...........................63,292
Folding Rear Seat........................ 57
Folding Windshield...................... 130
Four Wheel Drive....................... 190
Shifting............................. 192
Four Wheel Drive Operation.............190,191
336 INDEX