2008 JEEP PATRIOT light

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
transaxle control systems. When these systems are oper-
ating properly, your vehicle will provide excellent per-
formance and fuel economy, as well as engine emissions
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 or
improperly installed. A “gASCAP” message will be dis-
played in the instrument cluster. Tighten the gas cap until
aclickingsound is heard. This is an indication that the
gas cap is properly tightened. Press the trip odometer
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RESET button to turn off the message. 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
light off.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of this 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 maynotbe ready if the 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, the vehicle may fail the test.
This vehicle has a simple ignition key-actuated test,
which you can use prior to going to the test station. To
check if this vehicle’s OBD II system is ready, you must
do the following:
1. Insert the 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 the ignition key to the ON
position, you will see the MIL symbol come on as part of
a normal bulb check.
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NOTE:Inspection of brake hoses should be done when-
ever the brake system is serviced and at every engine oil
change.
WARNING!
Worn brake hoses can burst and cause brake failure.
You could have an accident. If you see any signs of
cracking, scuffing, or worn spots, have the brake
hoses replaced immediately.
Brake Master Cylinder
The fluid level in the master cylinder should be checked
when performing under hood services, or immediately if
the brake system warning light is on.
Be sure to clean the top of the master cylinder area before
removing the cap. If necessary, add fluid to bring the
fluid level up to the requirements described on the brakefluid reservoir. Fluid level can be expected to fall as the
brake pads wear. The brake fluid level should be checked
when the pads are replaced. However, low fluid level
may be caused by a leak and a checkup may be needed.
NOTE:If your vehicle is equipped with amanual
transaxle, the brake fluid reservoir supplies fluid to both
the brake system and the clutch release system. The two
systems are separated in the reservoir, and a leak in one
system will not affect the other system. Themanual
transaxleclutch release system should not require fluid
replacement during the life of the vehicle. If the brake
fluid reservoir is low and the brake system does not
indicate any leaks or other problems, it may be a result of
a leak in the hydraulic clutch release system. See your
local authorized dealer for service.
Use only manufacturer’s recommended brake fluid. Re-
fer to “Fluids, Lubricants, and Genuine Parts” under
Section 8.
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Cleaning Headlights
Your vehicle has plastic headlights that are lighter and
less susceptible to stone breakage than glass headlights.
Plastic is not as scratch resistant as glass and, therefore,
different lens cleaning procedures must be followed.
To minimize the possibility of scratching the lenses and
reducing light output, avoid wiping with a dry cloth. To
remove road dirt, wash with a mild soap solution fol-
lowed by rinsing.
Do not use abrasive cleaning components, solvents, steel
wool or other aggressive material to clean the lenses.
Glass Surfaces
All glass surfaces should be cleaned on a regular basis
with MoparGlass Cleaner or any commercial
household-type glass cleaner. Never use an abrasive type
cleaner. Use caution when cleaning the inside rear win-
dow equipped with electric defrosters or the right rearquarter window equipped with the radio antenna. Do
not use scrapers or other sharp instruments which may
scratch the elements. When cleaning the rearview mirror,
spray cleaner on the towel or rag that you are using. Do
not spray cleaner directly on the mirror.
Instrument Panel Cover
The instrument panel cover has a low glare surface which
minimizes reflections on the windshield. Do not use
protectants or other products which may cause undesir-
able reflections. Use soap and warm water to restore the
low glare surface.
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Cavity Cartridge
FuseMini-
FuseDescription
13 20 Amp
YellowPwr run/Acc Outlet
RR
14 10 Amp
RedIOD CCN/ Interior
Lighting
15 40 Amp
GreenRAD Fan Relay Bat-
tery Feed
16 15 Amp
Lt BlueIGN Run/Acc Cigar
Ltr/Sunroof
17 10 Amp
RedIOD Feed Mod-Wcm
18 40 Amp
GreenASD Relay Contact
PWR Feed
19 20 Amp
YellowPWR Amp 1 & Amp
2 Feed
20 15 Amp
Lt BlueIOD Feed RadioCavity Cartridge
FuseMini-
FuseDescription
21 10 Amp
RedIOD Feed Intrus
Mod/Siren
22 10 Amp
RedIGN RUN Heat/AC/
Compass Sensor
23 15 Amp
Lt BlueENG ASD Relay Feed
3
24 15 Amp
Lt BluePower Sunroof Feed
25 10 Amp
RedHeated Mirror
26 15 Amp
Lt BlueENG ASD Relay Feed
2
27 10 Amp
RedIGN RUN Only ORC
Feed
28 10 Amp
RedIGN RUN ORC/OCM
Feed
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CAUTION!
•When installing the IPM cover, it is important to
ensure the cover is properly positioned and fully
latched. Failure to do so may allow water to get
into the IPM, and possibly result in an electrical
system failure.
•When replacing a blown fuse, it is important to
use only a fuse having the correct amperage rating.
The use of a fuse with a rating other than indicated
may result in a dangerous electrical system over-
load. If a properly rated fuse continues to blow, it
indicates a problem in the circuit that must be
corrected.
VEHICLE STORAGE
If you will not be using your vehicle for more than 21
days, you may want to take steps to preserve your
battery.
•Disengage the mini-fuse in the Power Distribution
Center labeled IOD (Ignition Off-Draw).
•Disconnect the negative cable from the battery.
REPLACEMENT BULBS
All the inside bulbs are brass or glass wedge base.
Aluminum base bulbs are not approved and should not
be used for replacement.
LIGHT BULBS — Interior Bulb Number
Front Header Lamp......................T578
Center Dome Lamp......................T578
Rear Cargo/Flashlight.................8–A35LF
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LIGHTS BULBS — Exterior Bulb No.
Low Beam/High Beam Headlight............ H13
Front Park/Turn Signal/Side
Marker Light..................3157AK or 3157A
Front Fog Light.........................9145
Center High Mounted Stop
Light (CHMSL).................. LEDAssembly
Rear Tail/Stop..........................3157
Rear Turn Signal...............3757AK or 3757A
Backup Light..................... W16W(921)
License Light.......................... W5W
Off-Road Light........................... H3BULB REPLACEMENT
Headlamps
1. Raise the hood and locate the connector behind the
headlight.
Headlight Connector
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Fog Lights
See your authorized dealer for replacement.
Tail Lights, Rear Turn Signals And Backup Lights
— Replacement
1. Remove the two push-pins from the tail light housing.
Removing Push-Pins
Push-Pins Removed
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