check engine light JEEP LIBERTY 2006 KJ / 1.G Owners Manual

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
The Sentry Key Immobilizer System (SKIM) 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 or
unlocked. During normal operation, the “Sentry Key/ Security Alarm Indicator Light” (located in the instru-
ment cluster) 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 “Sentry Key/Security Alarm 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

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.
Rear Defroster Switch
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 163
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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 Monitoring Telltale Light
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your vehicle
has tires of a different size than the size indicated on the
vehicle placard or tire inflation pressure label, you should
determine the proper tire inflation pressure for those
tires.)
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system (TPMS)
that illuminates a low tire pressure telltale when one or
more of your tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illuminates, you
should stop and check your tires as soon as possible, and
UNDERSTANDING YOUR INSTRUMENT PANEL 173
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inflate them to the proper pressure. Driving on a signifi-
cantly under-inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may affect the vehicle’s
handling and stopping ability.
Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver ’s responsibility to
maintain correct tire pressure, even if under-inflation has
not reached the level to trigger illumination of the TPMS
low tire pressure telltale. (See page 268 for more infor-
mation.)
6. 4LO Mode Indicator Light — 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. (See page 234 for more infor-
mation.) 7. Fog Light Indicator Light — 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 position
before 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.
174 UNDERSTANDING YOUR INSTRUMENT PANEL

When the engine is running, the “Malfunction Indicator
Light” 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. (See page 316 for more
information.)
9. Anti-Lock Warning Light (ABS) — If Equipped This light monitors the Anti-Lock Brake System
(ABS) described elsewhere in this manual. This
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
four seconds. The light should then turn off unless 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
UNDERSTANDING YOUR INSTRUMENT PANEL 175
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the instrument cluster). For additional information, refer
to “Overhead Console — If Equipped” in Section 3. (See
page 135 for more information.)
NOTE: The warnings “LOCOOL” and “GASCAP” will
always be displayed in the odometer display.
U.S. federal regulations require that upon transfer of
vehicle ownership, the seller certify to the purchaser the
correct mileage that the vehicle has been driven. There-
fore, if the odometer reading is changed during repair or
replacement, be sure to keep a record of the reading
before and after the service so that the correct mileage can
be determined.
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. If
this 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.
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light doesn’t come on, stays on, or comes on while
driving, have the airbag system checked by an autho-
rized dealer.
24. O/D (Overdrive) Off Indicator Light This light will illuminate when the O/D OFF
button has been selected. The O/D OFF button is
located on the gear shift lever.
25. Seat Belt Indicator Light When the ignition switch is first turned ON, this
light will turn on for 5 to 8 seconds as a bulb check.
During the bulb check, if the driver’s seat belt is
unbuckled, a chime will sound. After the bulb check or
when driving, if the driver or front passenger seat belt
remains unbuckled, the Seat Belt Warning Light will flash
or remain on continuously. Refer to Enhanced Driver
Seat Belt Reminder System (BeltAlert) in the Occupant
Restraints section for more information. 26. Light Bar Indicator Light — If Equipped
This light indicates when the light bar lamps
are on.
27. Water In Fuel Warning Light — Diesel Models
Only This light indicates water has collected in the
fuel filter and should be drained immediately.
Refer to “Starting Procedures — Diesel Fuel
Water Separator” in Section 5 of this manual, or
see your authorized dealer for service
28. Electronic Throttle Control (ETC) Warning Light —
If Equipped This light informs you of a problem with the
Electronic Throttle Control System. If a prob-
lem is detected while the engine is running, the
light will either stay on or flash depending on
the nature of the problem. Cycle the ignition key when
180 UNDERSTANDING YOUR INSTRUMENT PANEL

the vehicle is safely and completely stopped and the gear
selector is placed in the P (Park) position. The light
should turn off. If the light remains on with the engine
running, your vehicle will usually be drivable, however,
see your dealer for service as soon as possible.
If the light continues to flash when the engine is running,
immediate service is required and you may experience
reduced performance, an elevated / rough idle, or engine
stall and your vehicle may require towing. The light will
come on when the ignition is first turned on and remain
on briefly as a bulb check. If the light does not come on
during starting, have the system checked by an autho-
rized dealer.
NOTE: “Two-footed” driving is not recommended. In-
advertently driving with the brake pedal depressed for
more than a few seconds when the accelerator pedal is
held in place can cause the ETC system to assume that a
stuck accelerator pedal has occurred. This will result in a loss of power. Returning the brake pedal to its normal
position or moving the accelerator pedal will cancel this
condition. If the depressed brake pedal and the constant
accelerator pedal position are maintained for an extended
period of time, the ETC warning light will begin to flash
and continue until the ignition switch is cycled in the
same manner as above.
29. Glow Plug Indicator Light — Diesel Models Only
This light will illuminate when the ignition
switch is first turned to the ON position. Wait
until the light turns off before starting the
vehicle. Refer to “Starting Procedures — Nor-
mal Starting Diesel Engines” in Section 5 of this manual.
UNDERSTANDING YOUR INSTRUMENT PANEL 181
4

30. Electronic Stability Program (ESP) Warning
Light/Brake Assist System (BAS) Warning Light — If
EquippedThe ESP/BAS warning light in the instrument
cluster comes on when the ignition switch is
turned to the “ON” position. The light should
go out with the engine running. If the ESP/
BAS warning light comes on continuously with the
engine running, a malfunction has been detected in either
the ESP or the BAS system. If this light stays illuminated,
have the ESP and BAS checked at your authorized dealer
as soon as possible. Refer to “Electronic Brake Control
System” in Section 5 for more information. 31. Electronic Stability Program (ESP) Indicator
Light/Traction Control System (TCS) Indicator Light —
If Equipped
If this indicator light flashes during accelera-
tion, apply as little throttle as possible. While
driving, ease up on the accelerator. Adapt your
speed and driving to the prevailing road con-
ditions, and do not switch off the ESP, or TCS — if
equipped. The indicator light will flash when the ESP or
TCS System is active and helping to improve vehicle
stability. If the indicator light is on solid, ESP or TCS may
not be able to function normally. Refer to “Electronic
Brake Control System” in Section 5 for more information.
182 UNDERSTANDING YOUR INSTRUMENT PANEL

If using a manual transmission vehicle for trailer towing,
all starts must be in FIRST gear to avoid excessive clutch
slippage.
Towing Tips — Automatic Transmission
The “D” range can be selected when towing. However, if
frequent shifting occurs while in this range, the “3” range
should be selected.
NOTE: Using the “3” range while operating the vehicle
under heavy operating conditions will improve perfor-
mance and extend transmission life by reducing exces-
sive shifting and heat build up. This action will also
provide better engine braking.
The automatic transmission fluid and filter should be
changed if you REGULARLY tow a trailer for more than
45 minutes of continuous operation. See Schedule “B” in
section 8 of this manual for transmission fluid change
intervals. NOTE:
Check the automatic transmission fluid level
before towing.
Towing Tips — O/D OFF (If Equipped)
To reduce potential for automatic transmission overheat-
ing, press the “O/D OFF” button when driving in hilly
areas or shift the transmission to Drive position 2 on
more severe grades. Refer to “Transmission Shifting” in
this section.
Towing Tips — Electronic Speed Control (If
Equipped)

Don’t use in hilly terrain or with heavy loads.
When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
STARTING AND OPERATING 293
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