2008 JEEP PATRIOT fuel pressure

Periodic 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 tread and sidewall for cuts or
cracks. Check wheel nuts for tightness and tires (includ-
ing spare) for proper pressure.
Lights
Have someone observe the operation of exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Fluid Leaks
Check the area under the vehicle after overnight parking
for fuel, engine coolant, oil or other fluid leaks. Also, if
gasoline fumes are detected or fuel, power steering fluid,
transmission fluid or brake fluid leaks are suspected, the
cause should be located and corrected immediately.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 71
2

UNDERSTANDING YOUR INSTRUMENT PANEL
CONTENTS

Instrument Panel Features.................170

Instrument Cluster — Premium.............171

Instrument Cluster Descriptions............172

Electronic Vehicle Information Center (EVIC) —
If Equipped...........................183
▫Engine Oil Change Indicator System........184
▫EVIC Functions.......................185
▫Compass/Temperature/Audio............186
▫Average Fuel Economy.................186▫Distance To Empty (DTE)...............187
▫Elapsed Time........................187
▫Tire Pressure Monitor (TPM).............187
▫Personal Settings (Customer-Programmable
Features)...........................187

Radio General Information................193
▫Radio Broadcast Signals.................193
▫Two Types Of Signals..................1944

4. 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 light does
not come on during starting, have the system checked by
an authorized dealer.
If the 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.
The light does not show the quantity of oil in the engine.
This can be determined using the procedure shown in
Section 7.
5. Low Fuel Warning Light
When the fuel level drops to two gallons, the fuel
symbol will light and a single chime will sound.6. Speedometer
Indicates vehicle speed.
7. Airbag Warning Light
The light comes on and remains on for six to
eight seconds as a bulb check when the ignition
switch is first turned ON. If the light does not
come on during starting, stays on, or comes on
while driving, have the system checked by an authorized
dealer.
8. Turn Signal Indicator Light
The arrows will flash in unison with the exterior
turn signal, when using the turn signal lever.
9. High Beam Indicator Light
This light shows that the headlights are on high
beam. Push the turn signal lever away from the
steering wheel to switch the headlights from high or low
beam.
UNDERSTANDING YOUR INSTRUMENT PANEL 173
4

22. 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
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.
Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system is not
operating properly. The TPMS malfunction indicator is
combined with the low tire pressure telltale. When the
system detects a malfunction, the telltale will flash for
approximately one minute and then remain continuously
illuminated. This sequence will continue upon subse-
quent vehicle start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the sys-
tem may not be able to detect or signal low tire pressure
as intended. TPMS malfunctions may occur for a variety
of reasons, including the installation of replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the
178 UNDERSTANDING YOUR INSTRUMENT PANEL

•Distance To Empty (DTE)
•Elapsed Time
•Tire Pressure Monitor (TPM)
•Personal Settings
To Reset The Display
Pressing and holding the EVIC button once will clear the
function currently being displayed. Reset will only occur
if a resettable function is currently being displayed. To
reset all resettable functions, press and release the EVIC
button a second time within three seconds of resetting the
currently displayed function. Reset ALL will be dis-
played during this three second window.
Compass/Temperature/Audio
Press and release the EVIC button to display one of eight
compass headings to indicate the direction the vehicle is
facing, the outside temperature and the current radio
station.
For additional information regarding the compass, refer
to Personal Settings (Customer-Programmable Features)
in this Section.
Average Fuel Economy
Shows the average fuel economy since the last reset.
When the fuel economy is reset, the display will read
“RESET” or show dashes for two seconds. Then, the
history information will be erased, and the averaging will
continue from the last fuel reading before the reset.
186 UNDERSTANDING YOUR INSTRUMENT PANEL

Distance To Empty (DTE)
Shows the estimated distance that can be traveled with
the fuel remaining in the tank. This estimated distance is
determined by a weighted average of the instantaneous
and average fuel economy, according to the current fuel
tank level. This is not resettable.
NOTE:Significant changes in driving style or vehicle
loading will greatly affect the actual drivable distance of
the vehicle, regardless of the DTE displayed value.
When the DTE value is less than 30 mi (48.3 km)
estimated driving distance, the DTE display will change
to a text display ofLOW FUEL. This display will
continue until the vehicle runs out of fuel. Adding a
significant amount of fuel to the vehicle will turn off the
LOW FUELtext and a new DTE value will be dis-
played, based on the current values in the DTE calcula-
tion and the current fuel tank level.
Elapsed Time
Shows the total elapsed time of travel since the last reset
when the ignition switch is in the ACC position. Elapsed
time will increment when the ignition switch is in the ON
or START position.
Tire Pressure Monitor (TPM)
Refer to Section 5, “Tire Pressure Monitoring System
(TPMS)” for system operation.
Personal Settings (Customer-Programmable
Features)
This allows the driver to set and recall features when the
transmission is in PARK (automatic transmission) or the
vehicle is stopped (manual transmissions).
Press and release the EVIC button until “Personal Set-
tings” is displayed in the EVIC.
UNDERSTANDING YOUR INSTRUMENT PANEL 187
4

Brake System..........................278
▫Anti-Lock Brake System (ABS) —
If Equipped.........................279

Power Steering........................282

Tire Safety Information...................283
▫Tire Markings........................283
▫Tire Loading And Tire Pressure...........287

Tires — General Information...............291
▫Tire Pressure.........................291

Tire Chains...........................300

Tire Rotation Recommendations............300

Tire Pressure Monitoring System (TPMS) —
If Equipped...........................301
▫Base System — If Equipped..............304▫Premium System — If Equipped..........306
▫General Information...................310

Snow Tires...........................310

Fuel Requirements......................311
▫Gasoline Engines.....................311
▫Reformulated Gasoline.................311
▫Gasoline/Oxygenate Blends..............312
▫MMT In Gasoline.....................312
▫Materials Added To Fuel................313
▫Fuel System Cautions..................313
▫Carbon Monoxide Warnings..............314

Adding Fuel..........................314
▫Fuel Filler Cap (Gas Cap)...............314
STARTING AND OPERATING 237
5

WARNING!
•Unequal tire pressures can cause steering problems.
You could lose control of your vehicle.
•Unequal tire pressures from one side of the vehicle
to the other can cause the vehicle to drift to the right
or left.
•Always drive with each tire inflated to the recom-
mended cold tire inflation pressure.
2. Economy—
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 Stability—
Proper tire inflation contributes to a comfortable ride.
Over-inflation produces a jarring and uncomfortable
ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed either on
the face of the driver’s door or on the driver’s side “B”
pillar.
Some vehicles may have Supplemental Tire Pressure
Information for vehicle loads that are less than the
maximum loaded vehicle condition. These pressure con-
ditions will be found in the “Supplemental Tire Pressure
Information” section of this manual.
292 STARTING AND OPERATING