2008 JEEP LIBERTY service

INTRODUCTION
This manual has been prepared with the assistance of
service and engineering specialists to acquaint you with
the operation and maintenance of your new vehicle. It is
supplemented by a Warranty Information Booklet and
various customer oriented documents. You are urged to
read these publications carefully. Following the instruc-
tions and recommendations in this manual will help
assure safe and enjoyable operation of your vehicle.
NOTE: After you read the manual, it should be stored
in the vehicle for convenient reference and remain with
the vehicle when sold, so that the new owner will be
aware of all safety warnings.
When it comes to service, remember that your dealer
knows your vehicle best, has the factory-trained techni-
cians and genuine Mopartparts, and is interested in
your satisfaction.
ROLLOVER WARNING
Utility vehicles have a significantly higher rollover rate
than other types of vehicles. This vehicle has a higher
ground clearance, and a higher center of gravity than
many passenger cars. It is capable of performing better in
a wide variety of off-road applications. Driven in an
unsafe manner, all vehicles can be caused to go out of
control. Because of the higher center of gravity, if this
vehicle is out of control it may rollover when some other
vehicles may not.
Do not attempt sharp turns or abrupt maneuvers or other
unsafe driving actions that can cause loss of vehicle
control. Failure to operate this vehicle safely may result
in an accident, rollover of the vehicle, and severe or fatal
injury. Drive carefully.
4 INTRODUCTION

Replacement Keys
NOTE:Only keys that are programmed to the vehicle
electronics can be used to start and operate the vehicle.
Once a Sentry Key is programmed to a vehicle, it cannot
be programmed to any other vehicle.
CAUTION!
Always remove Sentry Keys from the vehicle and
lock all doors when leaving the vehicle unattended.
At the time of purchase, the original owner is provided
with a four-digit PIN number. Keep the PIN in a secure
location. This number is required for dealer replacement
of keys. Duplication of keys may be performed at an
authorized dealer or by using the Customer Key Pro-
gramming procedure. This procedure consists of pro-
gramming a blank key to the vehicle electronics. A blank
key is one, which has never been programmed.NOTE: When having the Sentry Key Immobilizer
System serviced, bring all vehicle keys with you to the
dealer.
Customer Key Programming
If you have two valid sentry keys, you can program new
sentry keys to the system by performing the following
procedure:
1. Cut the additional Sentry Key Transponder blank(s) to
match the ignition switch lock cylinder key code.
2. Insert the first valid key into the ignition switch. Turn
the ignition switch to the ªONº position for at least 3
seconds, but no longer than 15-seconds. Then, turn the
ignition switch to the ªLOCKº position and remove the
first key.
3. Insert the second valid key into the ignition switch.
Turn the ignition switch to the ªONº position within 15
seconds. After ten seconds, a chime will sound. In
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addition, the Vehicle Security Alarm Indicator Light will
begin to flash. Turn the ignition switch to the ªLOCKº
position and remove the second key.
4. Insert a blank Sentry Key into the ignition switch. Turn
the ignition switch to the ªONº position within 60
seconds. After 10 seconds, a single chime will sound. In
addition, the Vehicle Security Alarm Indicator Light will
stop flashing. To indicate that programming is complete,
the indicator light will turn on again for 3 seconds and
then turn off.
The new Sentry Key is programmed.The Keyless Entry
Transmitter will also be programmed during this pro-
cedure.
Repeat this procedure to program up to 8 keys. If you do
not have a programmed sentry key, contact your dealer
for details.NOTE:If a programmed key is lost, see your dealer to
have all remaining keys erased from the systems
memory. This will prevent the lost key from starting your
vehicle. The remaining keys must then be repro-
grammed. All vehicle keys must be taken to the dealer at
the time of service to be reprogrammed.
General Information
The Sentry Key system complies with FCC rules part 15
and with RSS-210 of Industry Canada. Operation is
subject to the following conditions:
²This device may not cause harmful interference.
²This device must accept any interference that may be
received, including interference that may cause undes-
ired operation.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 17
2

How to Disengage The Automatic Locking Mode
Disconnect the combination lap/shoulder belt from the
buckle and allow it to retract completely to disengage the
automatic locking mode and activate the vehicle sensitive
(emergency) locking mode.
Energy Management Feature
This vehicle has a safety belt system with an energy
management feature in the front seating positions to help
further reduce the risk of injury in the event of a head-on
collision.
This safety belt system has a retractor assembly that is
designed to release webbing in a controlled manner. This
feature is designed to help reduce the belt force acting on
the occupant's chest.
WARNING!
²The belt and retractor assembly must be replaced
if the seat belt assembly ªautomatic locking retrac-
torº feature or any other seat belt function is not
working properly when checked according to the
procedures in the Service Manual.
²Failure to replace the belt and retractor assembly
could increase the risk of injury in collisions.
Seat Belts and Pregnant Women
We recommend that pregnant women use the seat belts
throughout their pregnancy. Keeping the mother safe is
the best way to keep the baby safe.
Pregnant women should wear the lap part of the belt
across the thighs and as snug across the hips as possible.
50 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

will cause the system to turn the airbag on. In this case,
the OCS has classified the occupant of the seat as an
adult. An adult occupant needs to sit in a normal position
(with their feet on or near the floor) in order to be
properly classified. Reclining the seat back too far may
change how an occupant is classified by the OCS.
Drivers and adult passengers should verify that the
ªPAD Indicator Lightº is not illuminated when an adult
is riding in the front passenger seat. If an adult occu-
pant's weight is transferred to another part of the vehicle
(like the door or instrument panel), the weight sensors in
the seat may not properly classify the occupant. Objects
lodged under the seat or between the seat and the center
console can prevent the occupant's weight from being
measured properly and may result in the occupant being
improperly classified. Ensure that the front passenger
seat back does not touch anything placed on the back seatbecause this can also affect occupant classification. Also,
if you fold down the rear seat check to be sure it doesn't
touch the front passenger seat.
If the front passenger seat is damaged in any way, it
should only be serviced by an authorized dealer. If the
seat is removed (or even if the seat attachment bolts are
loosened or tightened in any way), take the vehicle to an
authorized dealer.
If there is a fault present in the OCS, the ªAirbag Warning
Lightº (a red light located in the center of the instrument
cluster directly in front of the driver) will be turned on.
This indicates that you should take the vehicle to an
authorized dealer. The ªAirbag Warning Lightº is turned
on whenever there is a fault that can affect the operation
of the airbag system. If there is a fault present in the OCS,
both the ªPAD Indicator Lightº and the ªAirbag Warning
Lightº are illuminated to show that the passenger airbag
is turned off until the fault is cleared. If an object is
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 61
2

WARNING!
Unapproved modifications or service procedures to
the front passenger seat assembly or its related com-
ponents may inadvertently change the airbag deploy-
ment in case of a frontal crash. This could result in
death or serious injury to the front seat passenger if
the vehicle is involved in an accident. A modified
vehicle may not comply with required Federal Motor
Vehicle Safety Standards (FMVSS).
If A Deployment Occurs
The airbag system is designed to deploy when the
Occupant Restraint Controller (ORC) detects a moderate-
to-severe collision, to help restrain the driver and front
passenger, and then to immediately deflate.NOTE:A collision that is not severe enough to need
airbag protection will not activate the system. This does
not mean something is wrong with the airbag system.
If you do have a collision, which deploys the airbags, any
or all of the following may occur:
²The nylon airbag material may sometimes cause abra-
sions and/or skin reddening to the driver and front
passenger as the airbags deploy and unfold. The
abrasions are similar to friction rope burns or those
you might get sliding along a carpet or gymnasium
floor. They are not caused by contact with chemicals.
They are not permanent and normally heal quickly.
However, if you haven't healed significantly within a
few days, or if you have any blistering, see your doctor
immediately.
64 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

²As the airbags deflate, you may see some smoke-like
particles. The particles are a normal by-product of the
process that generates the nontoxic gas used for airbag
inflation. These airborne particles may irritate the skin,
eyes, nose, or throat. If you have skin or eye irritation,
rinse the area with cool water. For nose or throat
irritation, move to fresh air. If the irritation continues,
see your doctor. If these particles settle on your
clothing, follow the garment manufacturer's instruc-
tions for cleaning.
²It is not advisable to drive your vehicle after the
airbags have deployed. If you are involved in another
collision, the airbags will not be in place to protect you.
WARNING!
Deployed airbags and seat belt pretensioners cannot
protect you in another collision. Have the airbags,
seat belt pretensioner, and seat belt retractor assem-
bly replaced by an authorized dealer as soon as
possible. Also, have the Occupant Classification Sys-
tem serviced as well.
Enhanced Accident Response System
In the event of an impact that causes airbag deployment,
with the vehicle stopped, and the vehicle communication
network intact, and the power intact, the Enhanced
Accident Response System performs the following func-
tions:
²Cuts off fuel to the engine.
²Flashes hazard lights.
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2

²Turns on the interior lights, which remain on as long as
the battery has power or until the ignition key is
removed.
²Unlocks the doors automatically.
NOTE:The interior lights can only be deactivated if the
key is removed from the ignition switch or the vehicle is
driven.
Maintaining Your Airbag System
WARNING!
²Modifications to any part of the airbag system could cause it to fail when
you need it. You could be injured if the airbag system is not there to
protect you. Do not modify the components or wiring, including adding
any kind of badges or stickers to the steering wheel hub trim cover or the
upper passenger side of the instrument panel. Do not modify the front
bumper or vehicle body structure.
²Do not attempt to modify any part of your advanced airbag system. The
airbag may inflate accidentally or may not function properly if modifica-
tions are made. Take your vehicle to an authorized dealer for any advanced
airbag system service. If your seat including your trim cover and cushion
needs to be serviced in any way (including removal or loosening/
tightening of seat attachment bolts), take the vehicle to your authorized
dealer. Only manufacturer approved seat accessories may be used. If it is
necessary to modify an advanced airbag system for persons with disabili-
ties, contact your authorized dealer.
²Do not place or hang any items such as add-on video players on the front
passenger seat back. The additional weight may cause the Occupant
Classification System to be unable to classify the front seat passenger
correctly. This could allow the passenger frontal airbag to inflate when it
is not desired.
²It is dangerous to try to repair any part of the airbag system yourself. Be
sure to tell anyone who works on your vehicle that it has an airbag system.
66 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE