light JEEP LIBERTY 2005 KJ / 1.G Repair Manual

Diesel Fuel-Water Separator
A diesel fuel-water separator separates the water nor-
mally found in diesel fuel. A manual hand prime pump is
located on the filter head for re-priming the fuel system.
The fuel-water separator is located on the driver side
cowl in the engine compartment. Refer to “2.8L Turbo
Diesel Engine Compartment” in Section 7 for location.
NOTE:If the “Water-In-Fuel Warning Light” (located in
the instrument cluster) comes on, this indicates that
water has collected in the fuel filter and should be
drained immediately. See your authorized dealer for
service.Should your vehicle run out of fuel, the fuel system must
be re-primed in order to start the engine. Factors such as
temperature, which affects the viscosity of the fuel, how
long the vehicle has been sitting and other factors will
influence how quickly the engine starts.
Re-Priming the Diesel Fuel System
The following procedure must be followed after com-
pletely running out of fuel.
1. Add a minimum of 2 gallons (7.57L) of diesel fuel to
the fuel tank.
2. Open the hood.
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WARNING!
Remember to disconnect the cord before driving.
Damage to the 110-115 volt AC electrical cord could
cause electrocution.
Use the heater when temperatures below 0°F (-18°C) are
expected to last for several days.
TRANSMISSION SHIFTING
6-Speed Manual Transmission
Follow the shift pattern on the gearshift knob.
NOTE:The backup lights will come on when your
vehicle is in R (Reverse) gear and the ignition is in the ON
position.Manual Shift Controls
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Overdrive (O/D)
For most city and highway driving. The transmission
contains an electronically controlled Overdrive, and will
automatically shift from D (Drive) to O/D (Overdrive) if
the following conditions are present:
•The transmission selector is in D (Drive).
•The O/D OFF button has not been activated.
•Vehicle speed is above approximately 30 mph (48
km/h).
•Transmission has reached normal operating tempera-
ture.
When frequent transmission shifting occurs while using
Overdrive, such as when operating the vehicle under
heavy load conditions (for example, in hilly terrain,
strong head winds, or trailer towing), turning off over-
drive will improve performance and extend transmission
life by reducing excessive shifting and heat buildup.Overdrive can be locked out by pressing the O/D OFF
button located on side of the gearshift lever. The O/D
OFF indicator light will illuminate to show that the
switch has been activated. When the indicator light is on,
Overdrive is locked out. Pressing the switch a second
time restores the Overdrive function. The lockout feature
is useful when towing a trailer or carrying a heavy load.O/D Off Button
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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:
•The torque converter clutch (TCC) will not engage
until the transmission fluid and engine coolant are
warm (usually after 1–3 miles (1.6–4.8 km) of driving)
and the vehicle speed is above approximately 30 mph
(48 km/h). To understand the difference in operation,
drive the vehicle so that TCC engagement conditions
are correct, and then press and release the “O/D OFF”
button once to disengage the TCC. Wait a few seconds,
and then press and release the “O/D OFF” button
again to engage the TCC. You will notice that the
engine runs at a higher RPM when driving at vehicle
speeds above approximately 30 mph (48 km/h) with
the TCC not engaged. This is a normal condition.
•If 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
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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.
Rocking the Vehicle
If the vehicle becomes stuck in snow, sand, or mud, it can
often be moved by a rocking motion. Move the gear
selector rhythmically between “First” and R (Reverse),
while applying slight pressure to the accelerator.
The least amount of accelerator pedal pressure to main-
tain the rocking motion without spinning the wheels or
racing the engine is most effective. Racing the engine or
spinning the wheels, due to the frustration of not freeing
the vehicle, may lead to transmission overheating and
failure. Allow the engine to idle with the transmission
selector in N (Neutral) for at least one minute after every
five rocking-motion cycles. This will minimize overheat-
ing and reduce the risk of transmission failure during
prolonged efforts to free a stuck vehicle.
CAUTION!
When “rocking” a stuck vehicle by moving between
“First” and R (Reverse), do not spin the wheels faster
than 15 mph (24 km/h), or drivetrain damage may
result.
FOUR-WHEEL DRIVE OPERATION
Command-TracOperating
Information/Precautions
The Command-Tractransfer case provides 4 mode
positions-2(rear) wheel drive high range, 4-wheel drive
high range, neutral, and 4-wheel drive low range.
This transfer case is intended to be driven in the 2-wheel
drive position (2H) for normal street and highway con-
ditions such as dry hard surfaced roads.
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When additional traction is required the transfer case 4H
and 4L positions can be used to lock the front and rear
driveshafts together and force the front and rear wheels
to rotate at the same speed. This is accomplished by
simply moving the shift lever to these positions. The 4H
and 4L positions are intended for loose, slippery road
surfaces only. Driving in the 4H and 4L positions on dry
hard surfaced roads may cause increased tire wear and
damage to the driveline components.
The PART TIME indicator light, located in the instrument
cluster, illuminates when the transfer case is shifted to the
4H position.
The 4 LO MODE indicator light, located in the instru-
ment cluster, illuminates when the transfer case is shifted
to the 4L position. There is no light for the 2H or N
(Neutral) positions.CAUTION!
•Do not attempt to make a shift while only the
front or rear wheels are spinning. The Command-
Trac transfer case is not equipped with a synchro-
nizer and therefore the front and rear driveshaft
speeds must be equal for the shift to take place.
Shifting while only the front or rear wheels are
spinning can cause damage to the transfer case.
•When operating your vehicle in 4L, the engine
speed is approximately three times that of the 2H
or 4H positions at a given road speed. Take care
not to overspeed the engine and do not exceed 25
mph (40 km/h).
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The PART TIME indicator light, located on the instru-
ment cluster, illuminates when the transfer case is shifted
to the 4 PART TIME position.
The FULL TIME indicator light, located on the instru-
ment cluster, illuminates when the transfer case is shifted
to the 4 FULL TIME position.
The 4LO MODE indicator light, located on the instru-
ment cluster, illuminates when the transfer case is shifted
to the 4LO position. There is no light for the 2WD, or N
(Neutral) positions.CAUTION!
•Do not attempt to make a shift while only the
front or rear wheels are spinning. The Selec-Trac
transfer case is not equipped with a synchronizer
and therefore the front and rear driveshaft speeds
must be equal for the shift to take place. Shifting
while only the front or rear wheels are spinning
can cause damage to the transfer case.
•When operating your vehicle in 4LO, the engine
speed is approximately three times that of the
2WD, 4 PART TIME, or 4 FULL TIME positions at
a given road speed. Take care not to overspeed the
engine and do not exceed 25 mph (40 km/h).
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TRAC-LOK™ REAR AXLE — IF EQUIPPED
The optional Trac-Lok™ rear axle provides a constant
driving force to both rear wheels and reduces wheel spin
caused by the loss of traction at one driving wheel. If
traction differs between the two rear wheels, the differ-
ential automatically proportions the usable torque by
providing more torque to the wheel that has traction.
Trac-Lok™ is especially helpful during slippery driving
conditions. With both rear wheels on a slippery surface, a
slight application of the accelerator will supply maxi-
mum traction. When starting with only one rear wheel on
an excessively slippery surface, slight application of the
parking brake may be necessary to gain maximum trac-
tion.WARNING!
On vehicles equipped with a limited-slip differen-
tial, never run the engine with one rear wheel off the
ground. The vehicle may drive through the rear
wheel remaining on the ground and cause you to
lose control of your vehicle.
PARKING BRAKE
To set the parking brake, pull the lever up as firmly as
possible. When the parking brake is applied with the
ignition ON, the “Brake Warning Light” in the instru-
ment cluster will light.
NOTE:The instrument cluster “Brake Warning Light”
indicates only that the parking brake is applied. You must
be sure the parking brake is fully applied before leaving
the vehicle.
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To release the parking brake, pull up slightly, press the
center button, then lower the lever completely.
Before leaving the vehicle parked on a hill, you must
make sure the parking brake is fully applied and place
the gear selector in the P (Park) position. Make certain the
transfer case is in gear. Failure to do so may cause the
vehicle to roll and cause damage or injury.
When parking on a hill, it is important to set the parking
brake before placing the gear selector in P (Park), other-
wise the load on the transmission locking mechanism
may make it difficult to move the selector out of P (Park).WARNING!
•Leaving children unattended in a vehicle is dan-
gerous for a number of reasons. A child or others
could be injured. Children should be warned not
to touch the parking brake or the gear selector
lever. Don’t leave the keys in the ignition. A child
could operate power windows, other controls, or
move the vehicle.
•Do not leave children or animals inside parked
vehicles in hot weather. Interior heat build up
may cause serious injury or death.
Be sure the parking brake is fully disengaged before
driving. Failure to do so can lead to brake failure.
NOTE:Parking brake adjustment and maintenance
should be performed by your authorized dealer.
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ANTI-LOCK BRAKE SYSTEM — IF EQUIPPED
The Anti-Lock Brake System is designed to aid the driver
in maintaining vehicle control under adverse braking
conditions. The system operates with a separate com-
puter to modulate hydraulic pressure to prevent wheel
lock-up and help avoid skidding on slippery surfaces.
All vehicle wheels and tires must be the same size and
type and tires must be properly inflated to produce
accurate signals for the computer.
WARNING!
Significant over or under-inflation of tires, or mixing
sizes of tires or wheels on the vehicle can lead to loss
of braking effectiveness.
The Anti-Lock Brake System conducts a low speed self-test
at about 12 mph (20 km/h). If for any reason, your foot is
on the brake when the vehicle reaches 12 mph (20 km/h),
this check will be delayed until 25 mph (40 km/h).
The Anti-Lock Brake System pump motor runs during
the self-test and during an ABS stop to provide the
regulated hydraulic pressure. The motor pump makes a
low humming noise during operation, this is normal.
During off-road use, loss of traction can temporarily
defeat the system and cause the warning light to illumi-
nate. Turn the ignition OFF and ON again to restore
Anti-Lock Brake System function.
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