2008 DODGE GRAND CARAVAN fuel pressure

Front and Side Impact Sensors
Impact Sensors trigger airbag deployment in front and
side impacts, and aid the ORC in determining appropri-
ate response to impact events. Additional sensors in the
ORC determine the level of airbag deployment and
provide verification.
Acceleration Sensors
Acceleration Sensors trigger airbag deployment based on
dramatic acceleration change of the vehicle.
Pressure Sensors
Pressure Sensors trigger airbag deployment based on
door cavity pressure changes.
Rollover Sensors
Rollover Sensors trigger airbag deployment in the event
of vehicle rollover and aid the ORC in deploying Side
Airbag Inflatable Curtains (SABIC) for rollover events.
Supplemental Side Airbag Inflatable Curtain
(SABIC) Ð If Equipped
The ORC deploys the SABIC during collision with other
vehicles and during collisions where the impact is con-
fined to a particular area of the vehicle Ð such as
collisions with poles, trees or similar objects.
It will deploy the SABIC only on the impact side of the
vehicle.
NOTE:The ORC does detect and protect for rollover
when equipped with SABIC airbags.
Enhanced Accident Response System
In the event of an impact causing airbag deployment, and
the vehicle communication network intact, and the
power intact, the Enhanced Accident Response System
performs the following functions:
²Cuts off fuel to the engine.
²Flashes hazard lights.
74 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Airbag Light
The light should come on and remain on for four seconds
as a bulb check when the ignition switch is first turned
ON. If the LED is not lit during starting and/or the light
stays on or comes ON while driving, have the system
checked by an authorized dealer.
Defroster
Check operation by selecting the defrost mode and place
the blower control on high speed. You should be able to
feel the air directed against the windshield.
NOTE:If the defroster is not working or you are unable
to feel air against the windshield in defrost mode, please
see your authorized dealer service center for repairs.
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 area under vehicle after overnight parking for fuel,
engine coolant, oil or other fluid leaks. Also, if gasoline
fumes are detected or fuel, power steering fluid, trans-
mission fluid or brake fluid leaks are suspected, the cause
should be located and corrected immediately.
94 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

during starting, stays on, or turns on while driving, have
the system inspected by an authorized dealer as soon as
possible.
23. Voltage Light
This light monitors the electrical system voltage.
The light should turn on momentarily as the
engine is started. If the light stays on or turns on while
driving, it indicates a problem with the charging system.
Immediate service should be obtained.
24. Low Fuel Light
When the fuel level reaches approximately 2.0
gallons (7.8 liters) this light will turn on and remain
on until fuel is added.25. Tire Pressure Monitoring Telltale Lamp Ð If
Equipped
Each tire, including the spare (if provided),
should be checked monthly when cold and in-
flated 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 deter-
mine 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.
Accordingly, when the low tire pressure telltale illumi-
nates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Underinflation also
234 UNDERSTANDING YOUR INSTRUMENT PANEL

reduces fuel efficiency and tire tread life, and may affect
the vehicle's handling and stopping ability.
NOTE:Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver 's responsi-
bility to maintain correct tire pressure, even if underin-
flation 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 varietyof reasons, including the installation of replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly.
NOTE:
Always check the TPMS malfunction telltale after
replacing one or more tires or wheels on your vehicle to
ensure that the replacement or alternate tires and wheels
allow the TPMS to continue to function properly.
CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use aftermarket tire sealants
or balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
UNDERSTANDING YOUR INSTRUMENT PANEL 235
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For additional information on TPMS, refer to Section 5 Ð
Starting and Operating, ªTire Pressure Monitoring Sys-
temº of this manual.
For additional information on Tire Pressures, refer to
Section 5 Ð Starting and Operating, ªTire Inflation
Pressuresº of this manual.
26. Electronic Stability Program (ESP) Indicator Light
The malfunction lamp for the ESP is combined
with BAS. The yellow ªESP/BAS Warning
Lampº comes on when the ignition switch is
turned to the ªONº position. They should go
out with the engine running. If the ªESP/BAS Warning
Lampº comes on continuously with the engine running,
a malfunction has been detected in either the ESP or the
BAS system. If this light remains on after several ignition
cycles, and the vehicle has been driven several miles/
kilometers at speeds greater than 30 mph (48 km/h), see
your authorized dealer as soon as possible.27. Compass Mini-Trip Computer (CMTC) Reset
Button
Press the reset button to scroll through sub menus (i.e.,
Trip Functions: AVG Fuel Economy, DTE, Elapsed Time,
and Units.
NOTE:For more detailed operation, refer to ªCompass
Mini-Trip Computerº later in this section.
28. Compass Mini-Trip Computer (CMTC) Display /
Electronic Vehicle Information Center (EVIC) DisplayÐ
If Equipped
Compass Mini-Trip Computer (CMTC) Ð If Equipped
On vehicles equipped with CMTC, the display provides
the outside temperature, one of eight compass headings
to indicate the direction the vehicle is facing and the
current radio station. Refer to ªCompass Mini-Trip Com-
puterº later in this section.
236 UNDERSTANDING YOUR INSTRUMENT PANEL

NFlowing/Rising Water..................346
mTire Safety Information...................348
NTire Markings........................348
NTire Loading And Tire Pressure...........353
mTires Ð General Information...............357
NTire Pressure.........................357
mTire Chains...........................367
mSnow Tires...........................368
mTire Rotation..........................368
mTire Pressure Monitor System (TPMS)........369
NBasic TPMS Without EVIC Ð If Equipped....371
NPremium TPMS With EVIC Ð If Equipped . . . 373
mFuel Requirements......................377N3.3L & 3.8L Gasoline Engine..............377
mAdding Fuel..........................382
NFuel Filler Cap (Gas Cap)...............382
NLoose Fuel Filler Cap Message............384
mFlexible Fuel Ð 3.3L Engines Only..........384
NE-85 General Information................384
NEthanol Fuel (E-85)....................385
NFuel Requirements....................386
NSelection Of Engine Oil For Flexible Fuel
Vehicles (FFV) E-85 And Gasoline Vehicles . . . 387
NStarting............................387
NCruising Range.......................387
NReplacement Parts.....................387
322 STARTING AND OPERATING

WARNING!
²Unequal tire pressures can cause steering problems.
You could lose control of your vehicle.
²Unequal tire pressures from one side of the vehicle
to the other can cause the vehicle to drift to the right
or left.
²Always drive with each tire inflated to the recom-
mended cold tire inflation pressure.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.
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 ªBº
pillar.
358 STARTING AND OPERATING

CAUTION!
After inspecting or adjusting the tire pressure always
reinstall the valve stem cap. This will prevent mois-
ture and dirt from entering the valve stem, which
could damage the TPMS SENSOR.
NOTE:
²The TPMS is not intended to replace normal tire care
and maintenance, or to provide warning of a tire
failure or condition.
²The TPMS should not be used as a tire pressure gauge
while adjusting your tire pressure.
²Driving on a significantly 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.
²The TPMS is not a substitute for proper tire mainte-
nance, and it is the driver's responsibility to maintain
correct tire pressure, using an accurate tire pressure
gage, even if under-inflation has not reached the level
to trigger illumination of the TPMS Warning Lamp.
NOTE:Seasonal temperature changes will affect tire
pressure, and the TPMS will monitor the actual tire
pressure in the tire.
BASIC TPMS WITHOUT EVIC Ð IF EQUIPPED
The TPMS uses wireless technology with wheel rim
mounted electronic sensors to monitor tire pressure lev-
els. Sensors, mounted to each wheel as part of the valve
stem, transmit tire pressure readings to the Receiver
Module.
NOTE:It is particularly important, for you to check the
tire pressure in all of your tires regularly and to maintain
the proper pressure.
STARTING AND OPERATING 371
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