2004 JEEP LIBERTY oil

2. This device must accept any interference that may be
received, including interference that may cause undes-
ired operation.
If your Remote Keyless Entry fails to operate from a
normal distance, check for these two conditions:
1. Weak batteries in transmitter. The expected life of
batteries is from one to two years
2. Closeness to a radio transmitter such as a radio station
tower, airport transmitter, and some mobile or CB radios.
Transmitter Battery Service
The recommended replacement battery is the Panasonic
CR2016 or equivalent.
1. Pry the transmitter halves apart with a dime or similar
object. Make sure not to damage the rubber gasket
material during removal.2. Remove and replace the batteries. Avoid touching the
new batteries with your fingers. Skin oils may cause
battery deterioration. If you touch the battery, clean it
with rubbing alcohol.
3. Reassemble the transmitter case. Snap the halves
together and test transmitter operation.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 27
2

ENGINE BREAK-IN RECOMMENDATIONS
A long break-in period is not required for the engine in
your new vehicle.
Drive moderately during the first 300 miles (500 km).
After the initial 60 miles (100 km), speeds up to 50 or 55
mph (80 or 90 km/h) are desirable.
While cruising, brief full-throttle acceleration, within the
limits of local traffic laws, contributes to a good break-in.
Wide open throttle acceleration in low gear can be
detrimental and should be avoided.
The engine oil installed in the engine at the factory is a
high quality energy conserving type lubricant. Oil
changes should be consistent with anticipated climate
conditions under which vehicle operations will occur.
The recommended viscosity and quality grades are
shown in Section 7 of this manual. NON-DETERGENT
OR STRAIGHT MINERAL OILS MUST NEVER BE
USED.A new engine may consume some oil during its first few
thousand miles (kilometers) of operation. This should be
considered as a normal part of the break-in and not
interpreted as an indication of difficulty.
SAFETY TIPS
Exhaust Gas
WARNING!
Exhaust gases can injure or kill. They contain carbon
monoxide (CO) which is colorless and odorless.
Breathing it can make you unconscious and can
eventually poison you. To avoid breathing (CO)
follow the safety tips below.
68 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Defrosters
Check operation by selecting the defrost mode and place
the blower control on high speed. You should feel the air
directed against the windshield.
Safety Checks You Should Make Outside The
Vehicle
Tires
Examine tires for excessive tread wear or uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread. Inspect for tread cuts or sidewall
cracks. Check wheel nuts for tightness and tires (includ-
ing spare) for proper pressure.
Lights
Have someone observe the operation of all exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
coolant, oil or other fluid leaks. Also, if gasoline fumes
are detected, the cause should be located and corrected
immediately.
70 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

14. Cruise Indicator Light
This indicator lights when the speed control
system is turned ON.
15. Oil Pressure Warning Light
Shows low engine oil pressure. The light will come
on and remain on when the ignition switch is
turned from the OFF to the ON position, and the light
will turn off after the engine is started. If the bulb does
not come on, have the system checked by your autho-
rized dealer.
If the warning light comes on and remains on while
driving, stop the vehicle and shut off the engine. DO
NOT OPERATE THE VEHICLE UNTIL THE CAUSE IS
CORRECTED. Also, a single chime will sound.
16. Transmission Temperature Warning Light
This light indicates that there is excessive trans-
mission fluid temperature that might occur with
severe usage such as trailer towing or snow plowing. Ifthis light comes on, stop the vehicle and run the engine at
idle or faster, with the transmission in N (Neutral) until
the light goes off.
17. Part Time Indicator Light Ð If Equipped
This light alerts the driver that the vehicle is in
the PART TIME four±wheel drive high range
mode, and the front and rear driveshafts are
mechanically locked together forcing the front and rear
wheels to rotate at the same speed.
18. Brake Warning Light
This light monitors various brake functions,
including brake fluid level and parking brake
application. If the light comes on, it may indi-
cate that the parking brake is applied, or there
is a low brake fluid level. On vehicles equipped with
Anti-Lock brakes (ABS), it may also indicate an ABS
malfunction that could lead to reduced braking perfor-
mance.
UNDERSTANDING YOUR INSTRUMENT PANEL 155
4

Window Fogging
In mild but rainy or humid weather, windows will fog on
the inside. To rapidly clear the fog off all the windows,
select the defrost mode, turn the temperature control
knob fully clockwise, and position the blower control to
its highest speed. Once the windshield has been cleared,
adjust the controls for your comfort.
On air conditioned vehicles, the compressor will operate
when in the Mix or Defrost modes and when the outside
temperature is approximately 30ÉF (-1ÉC) to provide
additional defrost/defog.
Summer Operation
Air conditioned vehicles must be protected with a high
quality anti-freeze coolant during summer to provide
proper corrosion protection and to raise the boiling point
of the coolant for protection against overheating. A 50%
concentration is recommended.
Winter Operation
When operating the system during the winter months,
make sure the air intake, located directly in front of the
windshield, is free of ice, slush, snow, or other obstruc-
tions.
REAR WINDOW FEATURES
Rear Window Wiper/Washer
A rotary ring switch on the control lever, located on the
right side of the steering column, controls operation of
the rear wiper/washer function. Rotating the center of
the switch up to the DEL (Delay) position or the ON
position will activate the wiper. Rotating the switch ring
beyond the ON or OFF position will activate the rear
washer. The wash pump will continue to operate as long
as the lever or ring is engaged. Upon release, the wipers
will cycle three times before returning to the set position.
UNDERSTANDING YOUR INSTRUMENT PANEL 203
4

Over Temperature Mode
The transmission electronics constantly monitor the
transmission oil temperature. If the transmission gets too
hot, the transmission will change the way it shifts to help
control the condition. This may result in a slightly
different feeling or response during normal operation in
D (Drive) position. If the transmission becomes hot
enough the TRANS TEMP warning light in the instru-
ment cluster will come on. After the transmission cools
down, it will return to normal operation.
Torque Converter Clutch
A feature designed to improve fuel economy has been
added to the automatic transmission of this vehicle. A
clutch within the torque converter engages automatically
at calibrated speeds. This may result in a slightly differ-
ent feeling or response during normal operation in high
gear. When the vehicle speed drops or during accelera-
tion, the clutch automatically and smoothly disengages.NOTE:
²The torque converter clutch will not engage until the
transmission fluid and engine coolant is warm (usu-
ally after 1±3 miles (1.6±4.8 km) of driving). Because
engine speed is higher when the torque converter
clutch is not engaged, it may seem as if the transmis-
sion is not shifting into ªOverdriveº when cold. This is
considered a normal condition. Pressing the ªO/D
OFFº switch will show that the transmission is able to
shift into and out of ªOverdrive.º
²If the vehicle has not been driven for several days, the
first few seconds of operation after shifting the trans-
mission into gear may seem sluggish. This is due to the
transmission fluid partially draining from the torque
converter into the transmission. This is considered a
normal condition and will not cause damage to the
transmission. The torque converter will refill within 5
seconds of shifting from P (Park) into any other gear
position.
STARTING AND OPERATING 221
5

MAINTAINING YOUR VEHICLE
CONTENTS
m2.4L Engine...........................285
m3.7L Engine...........................286
mOnboard Diagnostic System Ð OBD II........287
mEmissions Inspection And Maintenance
Programs............................288
mReplacement Parts......................289
mDealer Service.........................289
mMaintenance Procedures..................290
NEngine Oil..........................290NDrive Belts Ð Check Condition And Tension . . 294
NSpark Plugs.........................295
NCatalytic Converter....................295
NEngine Timing Belt Ð 2.4L Engine.........297
NIgnition Wiring System Ð 2.4L Engine......297
NCrankcase Emission Control System........297
NAir Cleaner Filter.....................297
NMaintenance-Free Battery................298
NAir Conditioner Maintenance.............299
7

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. Do only that 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.
290 MAINTAINING YOUR VEHICLE