2008 JEEP PATRIOT Owners Manual

front wheels. Then shift back and forth between RE-
VERSE and 1st gear. Usually the least accelerator pedal
pressure to maintain the rocking motion without spin-
ning the wheels is most effective.
WARNING!
Fast spinning tires can be dangerous. Forces gener-
ated by excessive wheel speeds may cause axle, tire
damage or failure. A tire could explode and injure
someone. Do not spin your vehicle’s wheels faster
than 30 mph (48 km/h) or for longer than 30 seconds
continuously without stopping when you are stuck.
And don’t let anyone near a spinning wheel, no
matter what the speed.
CAUTION!
Racing the engine or spinning the wheels too fast
may lead to transaxle overheating and failure. It can
also damage the tires. Do not spin the wheels above
30 mph (48 km/h). Do not spin the wheels continu-
ously for more than 30 seconds.
TOWING A DISABLED VEHICLE
With Ignition Key
Automatic And Manual Transaxle
Front wheel drive vehicles must have the front wheels
elevated; 4-wheel drive vehicles must be hauled on a
flatbed truck.
WHAT TO DO IN EMERGENCIES 343
6

2All Transaxles
CAUTION!
If the vehicle being towed requires steering, the
ignition switch must be in the ACC position, not in
the LOCK position.
Do not attempt to use sling type equipment when
towing. When securing the vehicle to a flat bed truck,
do not attach to front or rear suspension components.
Damage to your vehicle may result from improper
towing.
If it is necessary to use the accessories while being towed
(wipers, defrosters, etc.), the key must be in the ON
position, not the ACC position. Make certain the trans-
mission remains in NEUTRAL.
Without The Ignition Key
Special care must be taken when the vehicle is towed
with the ignition in the LOCK position. A dolly should be
used under the front wheels if the rear wheels are raised.
Proper towing equipment is necessary to prevent dam-
age to the vehicle.
Battery power is required to release the brake/
transmission interlock system. There is a removable plug
in the right side of the shift lever housing that allows you
to insert your finger to override the system. The ignition
key must be in the ON position to use the override lever.
Towing this Vehicle Behind Another Vehicle (Flat
Towing with All Four Wheels on the Ground)
CAUTION!
DO NOT flat tow this vehicle. Damage to the driv-
etrain will result.
344 WHAT TO DO IN EMERGENCIES

MAINTAINING YOUR VEHICLE
CONTENTS

Engine Compartment — Gasoline...........348

Onboard Diagnostic System — OBD II........349
▫Loose Fuel Filler Cap Message............349

Emissions Inspection And Maintenance
Programs............................350

Replacement Parts......................351

Authorized Dealer Service................352

Maintenance Procedures..................352
▫Engine Oil..........................352▫Drive Belt — Check Condition............356
▫Spark Plugs.........................356
▫Catalytic Converter....................356
▫Crankcase Emission Control System........358
▫Fuel Filter..........................358
▫Air Cleaner Element (Filter)..............358
▫Maintenance-Free Battery................359
▫Air Conditioner Maintenance.............361
▫Power Steering — Fluid Check............362
7

▫Front Suspension Ball Joints..............362
▫Body Lubrication.....................363
▫Windshield Wiper Blades................363
▫Windshield Washer Fluid Reservoir........364
▫Exhaust System......................364
▫Cooling System.......................365
▫Hoses And Vacuum/Vapor Harnesses.......370
▫Fuel System Connections................370
▫Brake System........................371
▫Automatic Transaxle (CVT)..............373
▫Manual Transaxle.....................374
▫Rear Drive Assembly (RDA) – AWD/4WD
Models Only........................375▫Power Transfer Unit (PTU) – AWD/4WD
Models Only........................375
▫Appearance Care And Protection
From Corrosion......................376

Fuses/Integrated Power Module (IPM).......382

Vehicle Storage........................385

Replacement Bulbs......................385

Bulb Replacement......................386
▫Headlamps..........................386
▫Fog Lights..........................389
▫Tail Lights, Rear Turn Signals And Backup
Lights — Replacement..................389
▫License Lights........................391
▫Center High-Mounted Stoplight...........392
346 MAINTAINING YOUR VEHICLE

▫Auxiliary Off-Road Light................393

Fluids And Capacities...................395

Fluids, Lubricants, And Genuine Parts........396▫Engine.............................396
▫Chassis............................397
MAINTAINING YOUR VEHICLE 347
7

ENGINE COMPARTMENT — GASOLINE
348 MAINTAINING YOUR VEHICLE

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
MAINTAINING YOUR VEHICLE 349
7

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.
350 MAINTAINING YOUR VEHICLE