2004 JEEP WRANGLER service indicator

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 which have an I/M (Inspection and
Maintenance) requirement, this check verifies the
following: the MIL (Malfunction Indicator Lamp)
is functioning and is not on when the engine is running,
and that the OBD (On Board Diagnostic) system is ready
for testing.
Normally, the OBD system will be ready. The OBD
system maynotbe ready if your vehicle was recently
serviced, if you recently had a dead battery, or a battery
replacement. If the OBD 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 system is ready, you must do
the following:
1. Insert your ignition key into the ignition switch.2. Turn the ignition to the ON position, but do not crank
or start the engine.
3. If you crank or start the engine, you will have to start
this test over.
4. As soon as you turn your key to the ON position, you
will see your MIL symbol come on as part of a normal
bulb check.
5. Approximately 15 seconds later, one of two things will
happen:
a. The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn off
the ignition key or start the engine. This means that
your vehicle's OBD system isnot readyand you
shouldnotproceed to the I/M station.
b. The MIL will not flash at all and will remain fully
illuminated until you turn off the ignition key or
start the engine. This means that your vehicle's OBD
system isreadyand you can proceed to the I/M
station.
226 MAINTAINING YOUR VEHICLE

To determine the battery charge, check the battery test
indicator (if equipped) on top of the battery. Refer to the
illustration.
CAUTION!
It is essential when replacing the cables on the
battery that the positive cable is attached to the
positive post and the negative cable is attached to the
negative post. Battery posts are marked (+) positive
and negative (-) and identified on the battery case.
Also, if a ªfast chargerº is used while battery is in the
vehicle, disconnect both vehicle battery cables be-
fore connecting the charger to battery. Do not use a
ªfast chargerº to provide starting voltage.
Air Conditioner Maintenance
For best possible performance, your air conditioner
should be checked and serviced by an Authorized Dealer
at the start of each warm season. This service should
include cleaning of the condenser fins and a performance
test. Drive belt tension should also be checked at this
time.
MAINTAINING YOUR VEHICLE 235
7

REPLACEMENT BULBS Ð IF EQUIPPED
Interior Lights Bulb Type
Auto. Trans. Indicator Light................. 658
Courtesy Lights, Under Dash (1).............. 906
Heater Control Lights (2)................... 194
Rocker Switch Indicator Light (Rear Window
Defogger, and Rear Wash/Wipe)............... **
Soundbar Dome Light..................... 912
** Bulbs only available from authorized dealer.
Instrument Cluster Bulb Type
Telltale (High Beam)....................... 74
Illumination............................ 103Exterior Lights Bulb Type
Backup Lights (2)........................1156
Center High Mounted Stop Light (1).... 921orW16W
Fog Lights.............................. H3
Front Park/Turn Lights (2).................3157
Front Side Marker Lights (2).......... 168orW3W
Headlights (2)...................... H6024BL
Stop/Tail/Turn Lights (2)..................1157
Underhood Light......................... 561
License Light...........................1157
NOTE:Numbers refer to commercial bulb types that
can be purchased from your local authorized dealer.
If a bulb needs to be replaced, visit your authorized
dealer or refer to the applicable Service Manual.
MAINTAINING YOUR VEHICLE 257
7

Daytime Running...................... 58
Dimmer Switch, Headlight............... 57
Fog ................................ 58
Headlight Switch...................... 57
High Beam.......................... 117
High Beam Indicator................... 117
Instrument Cluster..................... 57
Interior.............................. 56
Lights On Reminder.................... 57
Low Fuel........................... 120
Passing............................. 57
Seat Belt Reminder.................... 117
Sentry Key.......................... 116
Turn Signal........................58,116
Upshift Indicator...................... 117
Warning (Instrument Cluster Description) . . . 116
Loading Vehicle
Tires ............................... 188
Locks................................ 15
Door............................... 15
Steering Wheel........................ 14
Lower Anchors and Tether for
CHildren (LATCH)...................... 33Lubrication, Body....................... 237
Lug Nuts............................. 215
Maintenance, Airbag..................... 29
Maintenance Free Battery................. 234
Maintenance Procedures.................. 228
Maintenance Schedule................... 262
Schedule9A9......................... 274
Schedule9B9......................... 265
Maintenance Schedules.................. 262
Malfunction Indicator Light............ 118,226
Manual, Service........................ 285
Manual Transmission.................163,246
Fluid Level Check..................... 247
Lubricant Selection.................... 246
Shift Speeds......................... 164
Master Cylinder........................ 244
Mirrors............................... 46
Automatic Dimming.................... 46
Compass/Temperature.................. 46
Outside............................. 49
Rearview............................ 46
Modifications/Alterations, Vehicle............ 8
294 INDEX

Sentry Key............................ 12
Sentry Key Programming.................. 13
Sentry Key Replacement.................. 13
Service Assistance...................... 280
Service Contract........................ 282
Service Manuals........................ 285
Setting the Clock....................... 120
Shift Indicator Light..................... 117
Shift Speeds, Manual Transmission.......... 164
Shifting.............................. 163
Automatic Transmission................ 165
Manual Transmission.................. 163
Shoulder Belt Upper Anchorage............. 21
Shoulder Belts.......................... 17
Signals, Turn........................58,116
Snow Chains.......................... 196
Snow Plow........................... 205
Soft Top............................... 82
Spare Tire............................ 213
Spark Plugs........................... 232
Specifications
Fuel............................... 197
Oil ................................ 230Speed Control.......................... 60
Speedometer.......................... 117
Starting.............................. 160
Automatic Transmission................ 160
Emergency (Jump Starting).............. 216
Engine Block Heater................... 162
Engine Fails to Start................... 161
Manual Transmission.................. 160
Starting Procedures..................... 160
Steering
Power............................. 236
Tilt Column.......................... 60
Wheel Lock.......................... 14
Wheel, Tilt........................... 60
Storage............................65,256
Storage, Vehicle........................ 256
Storing Your Vehicle..................... 256
Supplemental Restraint System - Airbag....... 22
Tachometer........................... 116
Temperature Gauge, Engine Coolant......... 118
Tether Anchor, Child Restraint.............. 33
Tilt Steering Column..................... 60
INDEX 297
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