2008 JEEP LIBERTY service

service attendant of this. As long as the engine operating
temperature is satisfactory, the coolant bottle need only
be checked once a month.
When additional coolant is needed to maintain the
proper level, it should be added to the coolant bottle. Do
not overfill.
Points To Remember
NOTE:When the vehicle is stopped after a few miles
(kilometers) of operation, you may observe vapor coming
from the front of the engine compartment. This is nor-
mally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot coolant to
enter the radiator.
If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
²Do not overfill the coolant bottle.
²Check coolant freeze point in the radiator and in the
coolant recovery bottle. If coolant needs to be added,
contents of coolant recovery bottle must also be pro-
tected against freezing.
²If frequent coolant additions are required, or if the
level in the coolant recovery bottle does not drop when
the engine cools, the cooling system should be pres-
sure tested for leaks.
²Maintain coolant concentration at 50% HOAT engine
coolant (minimum) and distilled water for proper
corrosion protection of your engine, which contains
aluminum components.
²Make sure that the radiator and coolant recovery
bottle hoses are not kinked or obstructed.
420 MAINTAINING YOUR VEHICLE

Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically.
Suggested service intervals can be found in the ªMainte-
nance Scheduleº in Section 8 of this manual.
WARNING!
Riding the brakes can lead to brake failure and
possibly an accident. Driving with your foot resting
or riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You wouldn't have your full
braking capacity in an emergency.
Brake and Power Steering System Hoses
When servicing the vehicle for scheduled maintenance,
inspect the surface of the hoses and nylon tubing for
evidence of heat and mechanical damage. Hard andbrittle rubber, cracking, tears, cuts, abrasions, and exces-
sive swelling suggest deterioration of the rubber. Particu-
lar attention should be made to examining those hose
surfaces nearest to high heat sources, such as the exhaust
manifold.
Insure nylon tubing in these areas has not melted or
collapsed.
Inspect all hose clamps and couplings to make sure they
are secure and no leaks are present.
NOTE:
²Often, fluids such as oil, power steering fluid, and
brake fluid are used during assembly plant operations
to ease the assembly of hoses to couplings. Therefore,
oil wetness at the hose-coupling area is not necessarily
an indication of leakage. Actual dripping of hot fluid
when systems are under pressure (during vehicle
operation) should be noted before a hose is replaced
based on leakage.
422 MAINTAINING YOUR VEHICLE

²Inspect the brake hoses whenever the brake system is
serviced and at every engine oil change. Inspect hy-
draulic brake hoses for surface cracking, scuffing, or
worn spots. If there is any evidence of cracking,
scuffing, or worn spots, the hose should be replaced
immediately! Eventual deterioration of the hose can
take place resulting in a possibility of a burst failure.
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.
Master Cylinder - Brake Fluid Level Check
Check the fluid level in the master cylinder immediately
if the brake system warning light indicates system fail-
ure.Check the fluid level in the master cylinder when per-
forming underhood services.
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 brake fluid reser-
voir.
Overfilling of fluid is not recommended because it may
cause leaking in the system.
Fluid level can be expected to fall as the brake pads wear.
Brake fluid level should be checked when pads are
replaced. However, low fluid level may be caused by a
leak and a checkup may be needed.
Use only manufacturer's recommended brake fluid. Re-
fer to ªFluids, Lubricants, and Genuine Partsº in this
section for the correct fluid type.
MAINTAINING YOUR VEHICLE 423
7

Manual Transmission Ð If Equipped
Fluid Level Check
Check the fluid level by removing the fill plug. The fluid
level should be between the bottom of the fill hole and a
point not more than 3/16º (4.76 mm) below the bottom of
the hole.
Add fluid, if necessary, to maintain the proper level.
Lubricant Selection
Use only manufacturer's recommended manual trans-
mission fluid. Refer to ªFluids, Lubricants, and Genuine
Partsº in this section for the correct fluid type.
Frequency of Fluid Change
Under normal operating conditions, the fluid installed at
the factory will give satisfactory lubrication for the life of
the vehicle. Fluid changes are not necessary unless the
fluid becomes contaminated with water. Change the fluid
immediately if contaminated with water.
NOTE:Be sure to follow the ªtrailer tow, snow plow,
heavy load, taxi, police, commercial service, off-road,
desert, or sustained high speeds during hot weatherº
maintenance interval if applicable.
Transfer Case
Fluid Level Check
The fluid level should be to the bottom edge of the fill
hole (1) when the vehicle is in a level position.
426 MAINTAINING YOUR VEHICLE

REPLACEMENT LIGHT BULBS
LIGHT BULBS Ð Interior Bulb No.
Cargo Light........................WL212±2
Overhead Console Light.............. PLW214±2A
Reading Light.......................WL212±2
LIGHT BULBS Ð Exterior Bulb No.
Headlight..........................9008 H13
Front Park/Turn Signal Light.............3757AK
Front Side Marker Light.................... 168
Back-Up Light.........................3157K
Center High Mounted Stop Light
(CHMSL)............................. LED
(Serviced at Dealer)
Fog Light.......................... H109145
License Plate Light....................... 168
Rear Tail/Stop.........................3157K
Rear Turn Signal Light..................3757AK
BULB REPLACEMENT
Headlight
1. Open the hood.
2. Reach behind the headlight housing to access the
headlight bulb lock ring.
3. Firmly grasp the lock ring and rotate it counterclock-
wise to unlock it.
4. Remove the bulb and connector assembly from the
headlight housing.
5. Disconnect the bulb from the electrical connector and
then connect the replacement bulb.
MAINTAINING YOUR VEHICLE 443
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EMISSION CONTROL SYSTEM MAINTENANCE
The ªScheduledº maintenance services, listed inbold
typemust be done at the times or mileages specified to
assure the continued proper functioning of the emission
control system. These, and all other maintenance services
included in this manual, should be done to provide best
vehicle performance and reliability. More frequent main-
tenance may be needed for vehicles in severe operating
conditions such as dusty areas and very short trip
driving.
Inspection and service also should be done any time a
malfunction is suspected.
NOTE:Maintenance, replacement, or repair of the emis-
sion control devices and systems on your vehicle may be
performed by any automotive repair establishment or
individual using any automotive part, which has been
certified pursuant to U.S. EPA or, in the State of Califor-
nia, California Air Resources Board regulations.
MAINTENANCE SCHEDULE
The oil change indicator system will remind you that it is
time to take your vehicle in for scheduled maintenance.
On Electronic Vehicle Information Center (EVIC)
equipped vehicles, ªOil Change Requiredº will be dis-
played in the EVIC and a single chime will sound,
indicating that an oil change is necessary.
On Non-EVIC equipped vehicles, ªChange Oilº will flash
in the instrument cluster odometer and a single chime
will sound, indicating that an oil change is necessary.
Based on engine operation conditions the oil change
indicator message will illuminate, this means that service
is required for your vehicle. Have your vehicle serviced
as soon as possible, within the next 500 miles (805 km).
452 MAINTENANCE SCHEDULES
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Perform Maintenance Every(Where time and mileage
are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Inspect the front suspension, tie rod ends and boot
seals, and replace if necessary.24,000 40 000 24
Replace the engine air cleaner filter.30,000 50 000 30
Change the manual transmission fluid if using your
vehicle for any of the following: trailer towing, snow
plowing, heavy loading, taxi, police, delivery service
(commercial service), off-road, desert operation, or
more then 50% of your driving is at sustained high
speeds during hot weather, above 90ÉF (32ÉC).30,000 50 000 30
Inspect the transfer case fluid. 30,000 50 000 30
Replace the spark plugs.30,000 50 000 30
Change the automatic transmission fluid & filter if
using your vehicle for police, taxi, fleet, off-road, or
frequent trailer towing.60,000 100 000 60
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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 right equipment. If
you have any doubt about your ability to perform a
service job, take your vehicle to a competent
mechanic.
458 MAINTENANCE SCHEDULES
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