JEEP LIBERTY 2007 KJ / 1.G Owners Manual

EMERGENCY TOW HOOKS — IF EQUIPPED
If your vehicle is equipped with tow hooks, they are
mounted in the front and the rear.
CAUTION!
Tow hooks are for emergency use only, to rescue a
vehicle stranded off road. Do not use tow hooks for tow
truck hookup or highway towing. You could damage
your vehicle. Tow straps are recommended when tow-
ing the vehicle, chains may cause vehicle damage.
WARNING!
Stand clear of vehicles when pulling with tow
hooks. Tow straps and chains may break, causing
serious injury.
TOWING A DISABLED VEHICLE
2WD Models Only
Provided the transmission is operable, tow only in N
(Neutral) at speeds not exceeding 30 mph (48 km/h), for
distances of not more than 15 miles (24 km). Towing at
more than 30 mph (48 km/h) or for more than 15 miles
(24 km) can cause severe transmission damage. If the
transmission is not operable, or the vehicle must be
towed faster than 30 mph (48 km/h) or farther than 15
miles (24 km), tow with all four wheelsOFFthe ground.
Acceptable methods are to tow the vehicle on a flatbed or
with one end of the vehicle raised and the other end on
a towing dolly. Removing the driveshaft for towing is not
recommended since this can allow fluid to drain from the
transmission.
WHAT TO DO IN EMERGENCIES 311
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4WD Models Only
The manufacturer recommends towing with all four
wheelsOFFthe ground. Acceptable methods are to tow
the vehicle on a flatbed or with one end of the vehicle
raised and the other end on a towing dolly.
312 WHAT TO DO IN EMERGENCIES

MAINTAINING YOUR VEHICLE
CONTENTS

Engine Compartment – 3.7L...............316

Onboard Diagnostic System — OBD II........317
▫Loose Fuel Filler Cap Message............317

Emissions Inspection And
Maintenance Programs...................318

Replacement Parts......................319

Dealer Service.........................319

Maintenance Procedures..................320
▫Engine Oil..........................320▫Drive Belts — Check Condition And Tension . . 323
▫Spark Plugs.........................324
▫Spark Plug Wires.....................324
▫Engine Air Cleaner Filter................324
▫Catalytic Converter....................325
▫Crankcase Emission Control System........327
▫Maintenance-Free Battery................327
▫Air Conditioner Maintenance.............329
▫Power Steering Fluid Check..............330
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▫Driveline And Steering Component
Lubrication..........................331
▫Body Lubrication.....................331
▫Windshield Wiper Blades................331
▫Windshield Washers...................332
▫Exhaust System......................333
▫Cooling System.......................333
▫Hoses And Vacuum/Vapor Harnesses.......338
▫Fuel System Connections................339
▫Brake System........................339
▫Clutch Hydraulic System —
Manual Transmission Only..............342
▫Front/Rear Axle Fluid..................342
▫Transfer Case........................343▫Manual Transmission..................344
▫Automatic Transmission................345
▫Appearance Care And Protection
From Corrosion......................347

Fuse Panel...........................353
▫Interior Fuses........................353
▫Underhood Fuses
(Power Distribution Center)..............356

Vehicle Storage........................361

Replacement Bulbs......................361

Bulb Replacement......................362
▫Head Light..........................362
▫Front Turn Signal.....................363
▫Front Fog Light (Front Fascia Mounted).....364
314 MAINTAINING YOUR VEHICLE

▫Rear Tail, Stop, Turn Signal, And
Back-Up Lights.......................365
▫Center High Mounted Stop Light (CHMSL) . . . 365

Fluids And Capacities...................366
Fluids, Lubricants, And Genuine Parts........367
▫Engine.............................367
▫Chassis............................368
MAINTAINING YOUR VEHICLE 315
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ENGINE COMPARTMENT – 3.7L
316 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
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light.” 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 dealer for service as soon as
possible.CAUTION!
•Prolonged driving with the “Malfunction Indica-
tor Light” on could cause further damage to the
emission control system. It could also affect fuel
economy and driveability. The vehicle must be
serviced before any emissions tests can be per-
formed.
•If the “Malfunction Indicator Light” is flashing
while the engine is running, severe catalytic con-
verter damage and power loss will soon occur.
Immediate service is required.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines that the fuel
filler cap is loose, improperly installed, or damaged, a
“GAS CAP” message will be displayed in the odometer
(located on the instrument cluster). Replace, or tighten
MAINTAINING YOUR VEHICLE 317
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the fuel filler cap properly to turn the message off (light
will time out). If the problem continues, the message will
appear the next time the vehicle is started.
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 batteryreplacement. 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:
318 MAINTAINING YOUR VEHICLE

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 shouldnot
proceed 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.
If your OBD system isnot ready,you should see your
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your
vehicle as you normally would in order for your OBD
system to update. A recheck with the above test routine
may then indicate that the system is now ready.
Regardless of whether your vehicle’s OBD system is
ready or not ready, if the MIL symbol is illuminatedduring normal vehicle operation, you should have your
vehicle serviced before going to the I/M station. The I/M
station can fail your vehicle because the MIL symbol is on
with the engine running.
REPLACEMENT PARTS
Use of genuine Moparparts for normal/scheduled
maintenance and repairs is highly recommended to in-
sure the designed performance. Damage or failures
caused by the use of non-Moparparts for maintenance
and repairs will not be covered by the manufacturer’s
warranty.
DEALER SERVICE
Your dealer has the qualified service personnel, special
tools, and equipment to perform all service operations in
an expert manner. Service Manuals are available which
include detailed service information for your vehicle.
Refer to these manuals before attempting any procedure
yourself.
MAINTAINING YOUR VEHICLE 319
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NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
WARNING!
You can be badly injured working on or around a
motor vehicle. Only do service work for which you
have the knowledge and the proper equipment. If you
have any doubt about your ability to perform a service
job, take your vehicle to a competent mechanic.
MAINTENANCE PROCEDURES
The pages that follow contain therequiredmaintenance
services determined by the engineers who designed your
vehicle.
Besides the maintenance items for which there are fixed
maintenance intervals, there are other items that should
operate satisfactorily without periodic maintenance.However, if a malfunction of these items does occur, it
could adversely affect the engine or vehicle performance.
These items should be inspected if a malfunction is
observed or suspected.
Engine Oil
Checking Oil Level
To assure proper lubrication of your vehicle’s engine, the
engine oil must be maintained at the correct level. Check
the oil level at regular intervals, such as every fuel stop.
The best time to check the engine oil level is about 5
minutes after a fully warmed engine has been shut off, or
before starting the engine after it has sat overnight.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Maintain
the oil level between the ADD and SAFE markings on the
dipstick. Adding 1 U.S. Quart (0.95L) of oil when the
reading is at the ADD mark will result in a SAFE reading
on these engines.
320 MAINTAINING YOUR VEHICLE