check engine JEEP LIBERTY 2004 KJ / 1.G Owners Manual

NDriver And Front Passenger Supplemental
Restraint Systems (SRS) Ð Airbags..........46
NChild Restraint........................58
mEngine Break-In Recommendations...........68
mSafety Tips............................68NExhaust Gas..........................68
NSafety Checks You Should Make Inside The
Vehicle..............................69
NSafety Checks You Should Make Outside The
Vehicle..............................70
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 11
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Key-In-Ignition Reminder
If you open the driver's door and the key is fully inserted
in the ignition switch, a chime will sound to remind you
to remove the key.
SENTRY KEY IMMOBILIZER SYSTEM Ð IF
EQUIPPED
The Sentry Key Immobilizer System (SKIS) prevents
unauthorized operation of the vehicle by disabling the
engine. The system will shut the engine down after 2
seconds of running if an invalid key is used to start the
vehicle. This system utilizes ignition keys which have an
electronic chip (transponder) embedded into them. Only
keys that have been programmed to the vehicle can be
used to start and operate the vehicle for longer than the
2 second validation time period.
The Sentry Key Immobilizer System does not need to be
armed or activated. Operation of the system is automatic
regardless of whether or not the vehicle is locked orunlocked. During normal operation, the SKIS indicator
light will come on for 3 seconds immediately after the
ignition switch is turned on for a bulb check. Afterwards,
if the bulb remains on, this indicates a malfunction in the
electronics. If the bulb begins to flash immediately after
the ignition switch is turned on, this indicates that an
invalid key is being used to start the vehicle. Both of
these conditions will result in the engine being shut
down after 2 seconds of running. Keep in mind that a key
which has not been programmed is also considered an
invalid key even if it is cut to fit the ignition for that
vehicle.
If the SKIS indicator light comes on during normal
vehicle operation (it has been running for longer than 10
seconds) a fault has been detected in the electronics and
the vehicle should be serviced as soon as possible.
14 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

²Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas which can kill.
Never run the engine in a closed area, such as a
garage, and never sit in a parked vehicle with the
engine running for a extended period. If the vehicle is
stopped in an open area with engine running for more
than a short period, adjust the ventilation system to
force fresh, outside air into the vehicle.
²Guard against carbon monoxide with proper mainte-
nance. Have the exhaust system inspected every time
the vehicle is raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with all side
windows fully open.
²Always run the climate control in panel or floor mode
when driving with any windows open, even if only
slightly, to help keep fresh air circulating inside ve-
hicle. Otherwise poisonous gases could be drawn into
the vehicle.
Safety Checks You Should Make Inside The
Vehicle
Seat Belts
Inspect the belt system periodically, checking for cuts,
frays and loose parts. Damaged parts must be replaced
immediately. Do not disassemble or modify the system.
Seat belt assemblies must be replaced after an accident if
they have been damaged (bent retractor, torn webbing,
pretensioners, etc.). If there is any question regarding belt
or retractor condition, replace the belt.
NOTE:The ªSeat Belt Indicator Lightº will remain on
until the driver's seat belt is buckled.
Airbag Warning Light
The light should come on and remain on for 6 to 8
seconds as a bulb check when the ignition switch is first
turned on. If the bulb is not lit during starting, have the
system checked by an authorized dealer.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 69
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INSTRUMENT CLUSTER DESCRIPTION
1. Tachometer
Indicates the permissible engine revolutions-per-minute
for each gear range. Before reaching the red area, ease up
on the accelerator to prevent engine damage.
2. Turn Signal Indicator Light
The arrows will flash in unison with the exterior
turn signals, when using the multi-function control
lever. A chime will sound if the turn signals are left on
continuously for 2 miles (3 km) until they are deacti-
vated.
3. High Beam Indicator Light
This light shows that the headlights are on high
beam. Pull the multi-function control lever to-
wards the steering wheel to switch the headlights from
high to low beam.4. Speedometer
Indicates vehicle speed.
5. Tire Pressure Monitor Warning Light Ð If Equipped
This light will turn on when there is a low tire
pressure condition. The light will also turn on
if a problem exist with any tire sensor. The light
will remain on until the tire pressure is prop-
erly set or the problem with the sensor is corrected.
This light will turn on momentarily as a bulb check when
the engine is started.
When the ªTire Pressure Monitor Warning Lightº is lit,
one or more of your tires is significantly under-inflated.
You should stop and check your tires as soon as possible,
and inflate them to the proper pressure as indicated on
the vehicle's tire information placard. Driving on a
significantly under-inflated tire causes the tire to over-
heat and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and may affect
UNDERSTANDING YOUR INSTRUMENT PANEL 151
4

the vehicle's handling and stopping ability. Each tire,
including the spare, should be checked monthly when
cold and set to the recommended inflation pressure as
specified on the vehicle placard.
6. 4LO Mode Indicator Light Ð If Equipped
This light alerts the driver that the vehicle is in
the 4 LO four±wheel drive mode. The front and
rear driveshafts are mechanically locked to-
gether forcing the front and rear wheels to
rotate at the same speed.
7. Fog Light Indicator Light Ð If Equipped
This light shows when the front fog lights are on.
8. Malfunction Indicator Light
This light is part of an onboard diagnostic system
called OBD II which monitors engine and auto-
matic transmission control systems. This light
will illuminate when the ignition is in the ON positionbefore engine start. If the bulb does not come on when
turning the ignition key from OFF to ON, have the
condition checked promptly.
Certain conditions such has a loose or missing gas cap,
poor fuel quality, etc. may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several typical driving cycles. In most
situations, the vehicle will drive normally and will not
require towing.
When the engine is running, the ªMalfunction Indicator
Lightº may flash to alert of serious conditions that could
lead to immediate loss of power or severe catalytic
converter damage. The vehicle should be serviced as
soon as possible if this occurs.
9. Anti-Lock Warning Light (ABS) Ð If Equipped
This light monitors the Anti-Lock Brake System
(ABS) described elsewhere in this manual. This
152 UNDERSTANDING YOUR INSTRUMENT PANEL

light will come on when the ignition switch is turned to
the ON position and may stay on for as long as three
seconds.
If the light comes back on immediately or comes on
during driving, it indicates that the Anti-Lock portion of
the brake system is not functioning and that service is
required, however, the conventional brake system will
continue to operate normally provided that the BRAKE
warning light is not on. Also, a chime will sound if the
light comes back on.
If the ABS light is on, the brake system should be serviced
as soon as possible to restore the benefit of Anti-Lock
Brakes.
The operation of the ABS light can be checked by turning
the ignition switch from the OFF position to the ON
position. The light should illuminate for approximately
two seconds. The light should then turn off unless theparking brake is applied or a brake fault is detected. If the
light does not illuminate, have the light inspected by an
authorized dealer.
10. Charging System Warning Light
This light shows the status of the electrical charg-
ing system. The light should come on for three
seconds when the ignition is first turned ON. If the light
comes back on immediately or comes on while driving, it
means that there is a problem with the charging system
or the battery is low. Also, a chime will sound if the light
comes back on. See your authorized dealer immediately.
11. Temperature Gage
Indicates engine coolant temperature. Any read-
ing within the normal range indicates that the
cooling system is operating satisfactorily.
The gage pointer will likely indicate a higher temperature
(above center scale) when driving in hot weather, up
mountain grades, in heavy stop and go traffic, or when
UNDERSTANDING YOUR INSTRUMENT PANEL 153
4

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

If the rear wiper is operating when the ignition is turned
OFF, the wiper will automatically return to the ªParkº
position. When the vehicle is restarted, the wiper will
resume function at whichever position the switch is set
at.
If the swing gate flip-up window is open or the swing
gate is open, connection to the rear window wiper is
interrupted preventing activation of the rear wiper blade.
When the swing gate flip-up window or the swing gate is
closed, the rear wiper switch or the ignition switch needs
to be turned OFF, and then to ON to restart the rear
wiper.
NOTE: The rear swing gate will lock while the rear
wiper is operating. The gate will stay locked until the
wiper is turned off and the gate is unlocked (by key,
lock switch, or key fob).Adding Washer Fluid
The fluid reservoir for the windshield washers and the
rear window washer is shared. It is located in the front of
the engine compartment on the passenger side and
should be checked for fluid level at regular intervals. Fill
the reservoir with windshield washer solvent (not radia-
tor antifreeze) and operate the system for a few seconds
to flush out the residual water.
Rear Window Defroster
On the top of the climate control panel is a push
button for rear window defrosting. An amber
indicator in the push button will light when the defroster
is turned on. Push again to turn off the defroster prior to
an automatic time-out.
204 UNDERSTANDING YOUR INSTRUMENT PANEL

Remember, never drive diagonally across a hill-always
drive straight up or down.
If the wheels start to slip as you approach the crest of a
hill, ease off the accelerator and maintain headway by
turning the front wheels sharply left and right. This will
provide fresh ªbiteº into the surface and will usually
provide traction to complete the climb.
Traction Downhill
Shift the transmission into a low gear and the transfer
case to 4L or 4 LO range. Let the vehicle go slowly down
the hill with all four wheels turning against engine
compression drag. This will permit you to control the
vehicle speed and direction.
When descending mountains or hills, repeated braking
can cause brake fade with loss of braking control. Avoid
repeated heavy braking by downshifting the transmis-
sion whenever possible.
After Driving Off-Road
Off-road operation puts more stress on your vehicle than
does most on-highway driving. After going off-road it is
always a good idea to check for damage. That way you
can get any problems taken care of right away and have
your vehicle ready when you need it.
²Completely inspect the underbody of your vehicle.
Check tires, body structure, steering, suspension, and
exhaust system for damage.
²Check threaded fasteners for looseness, particularly on
the chassis, drivetrain components, steering, and sus-
pension. Retighten them, if required, and torque to the
values specified in the Service Manual.
²Check for accumulations of plants or brush. These
things could be a fire hazard. They might hide damage
to fuel lines, brake hoses, axle pinion seals, and
propeller shafts.
238 STARTING AND OPERATING

9. Finish tightening the lug nuts securely in crisscross
pattern. Have an authorized service technician check that
the torque is 85-110 ft. lbs. (115-149 N´m) as soon as
possible.
10. Remove jack assembly and wheel blocks.
11. Secure jack, lug wrench, jack handle driver, jack
extension, and tire in proper locations.WARNING!
Carefully follow these tire changing warnings to
help prevent personal injury or damage to your
vehicle:
²Always park on a firm, level surface as far from the
edge of the roadway as possible before raising the
vehicle.
²Apply the parking brake firmly before jacking.
²Always block the wheel diagonally opposite the wheel
being raised.
²Do not raise the vehicle higher than is necessary to
remove the tire.
²Never start the engine with the vehicle on a jack.
278 WHAT TO DO IN EMERGENCIES