2004 JEEP LIBERTY fuel pressure

Defrosters
Check operation by selecting the defrost mode and place
the blower control on high speed. You should feel the air
directed against the windshield.
Safety Checks You Should Make Outside The
Vehicle
Tires
Examine tires for excessive tread wear or uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread. Inspect for tread cuts or sidewall
cracks. Check wheel nuts for tightness and tires (includ-
ing spare) for proper pressure.
Lights
Have someone observe the operation of all exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
coolant, oil or other fluid leaks. Also, if gasoline fumes
are detected, the cause should be located and corrected
immediately.
70 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Average Miles/GAL
Shows the average fuel economy in miles per gallon
(MPG), or liters per 100 km (L/100 km) since the last
reset.
Miles To Empty
Shows the estimated distance that can be traveled before
the fuel gauge shows E (Empty). The distance is calcu-
lated by multiplying the amount of fuel remaining by the
projected fuel economy. The distance predicted will
change every few seconds to a higher or lower number as
these factors change. This display cannot be reset.
Trip Miles
Shows the distance travelled since the last reset.
Time Elapsed
Shows the accumulated ignition ON time since the last
reset.Miles To Service
Shows the amount of miles remaining until service is
required (owner selected).
Tire PSI
Shows the pressure and location of each tire, except for
the spare tire. The tire location will blink when under
pressure.
Blank Screen
Shows a blank screen. Pressing the C/T button returns to
the Compass and Temperature display. Pressing the STEP
button returns you to the Average Miles per Gallon
display.
Automatic Compass Calibration
This compass is self-calibrating which eliminates the
need to manually set the compass. When the vehicle is
new, the compass may appear erratic and the CAL
symbol will be displayed.
122 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

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

NTire Pressure Monitor System/4±Lo Mode
Ð If Equipped.......................256
NGeneral Information...................256
mTire Chains...........................257
mTire Rotation Recommendations............258
mFuel Requirements......................259
NReformulated Gasoline.................260
NGasoline/Oxygenate Blends..............260
NMMT In Gasoline.....................261
NSulfur In Gasoline.....................261NMaterials Added To Fuel................262
mFuel Tank Filler Cap (Gas Cap).............262
mTrailer Towing.........................264
NWarranty Requirements.................264
mRecreational Towing (Behind Motorhome, Etc.) . . 267
NTowing ± 2WD Models.................267
NTowing Ð 4WD Models................267
mSnow Plow...........................270
STARTING AND OPERATING 209
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2. EconomyÐ
Improper inflation pressures can cause uneven wear
patterns to develop across the tire tread. These abnormal
wear patterns will reduce tread life resulting in a need for
earlier tire replacement. Under inflation also increases
tire rolling resistance and results in higher fuel consump-
tion.
3. Ride Comfort and Vehicle StabilityÐ
Proper tire inflation contributes to a comfortable ride.
Over inflation produces a jarring and uncomfortable ride.
Both under inflation and over inflation affect the stability
of the vehicle and can produce a feeling of sluggish
response or over responsiveness in the steering.
Unequal tire pressures can cause erratic and unpredict-
able steering response.
Unequal tire pressure from side to side may cause the
vehicle to drift left or right.Tire Inflation Pressures
The proper cold tire inflation pressure for passenger cars
is listed on either the face of the driver's door or the
driver's side ªBº pillar. For vehicles other than passenger
cars, the cold tire inflation pressures are listed on either
the ªBº pillar or the Certification Label.
STARTING AND OPERATING 249
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Tread Wear Indicators
These indicators are narrow strips 1/16 inch (1.6 mm)
thick and are found in the tread pattern grooves.
When the tread pattern is worn down to these treadwear
indicators, the tires should be replaced.
Overloading your vehicle, long trips in very hot weather,
and driving on bad roads may result in greater wear.
Replacement Tires
The tires on your new vehicle provide a balance of many
characteristics. They should be inspected regularly for
wear and correct inflation pressure. The manufacture
strongly recommends that you use tires equivalent to the
originals in quality and performance when replacement
is needed (see section on tread wear indicators). Failure
to use equivalent replacement tires may adversely affect
the safety, handling, ride and fuel economy of your
vehicle. We recommend that you contact your original
equipment tire dealer on any questions you may have on
tire specifications or capability.
252 STARTING AND OPERATING

NOTE:The Tire Pressure Monitor system must be
retrained following a tire rotation. See your authorized
dealer for service.
The suggested rotation method is the ªforward-crossº
shown in the following diagram.FUEL REQUIREMENTS
Your engine is designed to meet all emis-
sions regulations and provide excellent
fuel economy and performance when us-
ing high quality unleaded gasoline having
an octane rating of 87. The use of premium
gasoline is not recommended. The use of
premium gasoline will provide no benefit over high
quality regular gasoline, and in some circumstances may
result in poorer performance.
Mid-grade gasoline (89 octane) will enhance engine per-
formance during the following conditions (3.7L Only):
²Hot weather
²Towing
²Hard accelerations
²Hilly terrain
²Low humidity
STARTING AND OPERATING 259
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