cooling DODGE GRAND CARAVAN 2004 Owners Manual

SAFETY TIPS
Exhaust Gas
WARNING!Exhaust gases can injure or kill. They contain carbon
monoxide (CO) which is colorless and odorless.
Breathing it can make you unconscious and can
eventually poison you. To avoid breathing (CO)
follow the safety tips below.
Do not run the engine in a closed garage or in confined
areas any longer than needed to move your vehicle in or
out of the area.
If it is necessary to sit in a parked vehicle with the engine
running, adjust your heating or cooling controls to force
outside air into the vehicle. Set the blower at high speed. WARNING!If you are required to drive with the liftgate open,
make sure that all windows are closed, and the
climate control blower switch is set at high speed.
DO NOT use the recirculation mode.
Safety Checks You Should Make Inside The
Vehicle
Seat Belts
Inspect the belt system periodically, checking for cuts,
frays and loose parts. Damaged parts must be replaced
immediately. Do not disassemble or modify the system.
Front seat belt assemblies must be replaced after a
collision. Rear seat belt assemblies must be replaced after
a collision if they have been damaged (bent retractor, torn
webbing, etc. If there is any question regarding belt or
retractor condition, replace the belt. THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 71
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12. Engine Temperature Warning Light
This light warns of an overheated engine condi-
tion. If the engine is critically hot, a continuous
chime will sound for 4 minutes. After the chime
turns off, the engine will still be critically hot until the
light turns off.
13. Vehicle Theft Alarm Light Ð If Equipped
This light will flash for approximately 15 sec-
onds when the vehicle theft alarm is arming.
14. Temperature Gauge
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily. The gauge pointer will likely indicate a higher tempera-
ture when driving in hot weather, up mountain grades,
or when towing a trailer. It should not be allowed to
exceed the upper limits of the normal operating range.
CAUTION!Driving with a hot engine cooling system could
damage your vehicle. If temperature gauge reads (H),
pull over and stop the vehicle. Idle the vehicle with
the air conditioner turned off until the pointer drops
back into the normal range. If the pointer remains on
the ªHº, and you hear continuous chimes, turn the
engine off immediately, and call for service.154 UNDERSTANDING YOUR INSTRUMENT PANEL

WARNING!A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call a service center if your
vehicle overheats. If you decide to look under the
hood yourself, see Section 7 of this manual. Follow
the warnings under the Cooling System Pressure
Cap paragraph.
15. Washer Fluid Light
This light turns on when the washer fluid level
falls below approximately 1/4 filled. The light will
remain on until fluid is added.
16. Transmission Range Indicator
This vacuum fluorescent display indicator shows the
automatic transaxle gear selection. 17. Oil Pressure Warning Light
This light shows low engine oil pressure. The light
should turn on momentarily when the engine is
started. If the light turns on while driving, stop the
vehicle and shut off the engine as soon as possible. A
chime will sound for 4 minutes when this light turns on.
Do not operate the vehicle until the cause is corrected.
This light does not show how much oil is in the engine.
The engine oil level must be checked under the hood.
18. Malfunction Indicator Light
This light is part of an onboard diagnostic system
called OBD that monitors engine and automatic
transmission control systems. The light will illu-
minate when the key is in the ON position before engine
start. If the bulb does not come when turning the key
from OFF to ON, have the condition checked promptly.
Certain conditions such as a loose or missing gas cap,
poor fuel quality, etc. may illuminate the light after UNDERSTANDING YOUR INSTRUMENT PANEL 155
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Defrost Mode
Air comes from the windshield and side window demist
outlets. Use this setting when necessary to defrost your
windshield and side windows.
Depress the ªA/Cº button to turn on and off the
air conditioning during manual operation only.
Cool dehumidified air comes through the outlets selected by the Mode Control. To turn off the air condi-
tioning, press the A/C button a second time. The A/C
symbol in the display will turn off.
Recirculation Control
When the outside air contains smoke, odors,
high humidity, or if rapid cooling is desired
you may wish to recirculate interior air by
pressing the recirculation icon button. The re-
circulation mode should only be used temporarily. The
recirculate symbol will illuminate in the display when
this button is selected. You may select the recirculation
mode separately or with the A/C feature, if rapid cooling
is desired. Push in on the buttons a second time to turn
the systems off.
NOTE: In cold weather, use of the Recirculation mode
may lead to excessive window fogging. The Recirculation
mode is not allowed in the Mix and Defrost modes to UNDERSTANDING YOUR INSTRUMENT PANEL 213
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Bi-Level Mode
Air comes from both the headliner outlets and the
floor outlets.
NOTE: In many temperature positions, the bi-level
mode is designed to provide cooler air out of the head-
liner outlets and warmer air from the floor outlets.
Headliner Mode
Air comes from the outlets in the headliner. Each of
these outlets can be individually adjusted to direct
the flow of air. Moving the air vane knob on the outlets to
one side will shut off the air flow.
Summer Operation
The engine cooling system in air conditioned vehicles
must be protected with a high-quality antifreeze coolant
to provide proper corrosion protection and to protect
against engine overheating. A 50% solution of ethylene glycol antifreeze coolant in water is recommended. Refer
to section 7, Maintenance Procedures, of this manual for
proper coolant selection.
Winter Operation
The air from the heater system will heat faster in cold
weather if you use only low blower speeds for the first 10
minutes of vehicle operation. Use of the air Recirculation
mode during winter months is not recommended be-
cause it may cause window fogging.
Vacation Storage
Anytime you store your vehicle, or keep it out of service
(i.e. vacation) for two weeks or more, run the air condi-
tioning system at idle for about five minutes in the fresh
air and high blower setting. This will insure adequate
system lubrication to minimize the possibility of com-
pressor damage when the system is started again. UNDERSTANDING YOUR INSTRUMENT PANEL 217
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IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
² On the highways Ð Slow down.
² In city traffic Ð While stopped, put transaxle in
neutral, but do not increase engine idle speed.
NOTE: There are steps that you can take to slow down
an impending overheat condition. If your air conditioner
is on, turn it off. The air conditioning system adds heat to
the engine cooling system and turning off the A/C
removes this heat. You can also turn the Temperature
control to maximum heat, the Mode control to floor, and
the fan control to High. This allows the heater core to act
as a supplement to the radiator and aids in removing heat
from the engine cooling system. CAUTION!Driving with a hot cooling system could damage
your vehicle. If temperature gauge reads ªHº, pull
over and stop the vehicle. Idle the vehicle with the
air conditioner turned off until the pointer drops
back into the normal range. If the pointer remains on
the ªHº, turn the engine off immediately, and call for
service. WHAT TO DO IN EMERGENCIES 281
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WARNING!A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call a service center if your
vehicle overheats. If you decide to look under the
hood yourself, see Section 7, Maintenance, of this
manual. Follow the warnings under the Cooling
System Pressure Cap paragraph. JACKING AND TIRE CHANGING
WARNING!² Getting under a jacked-up vehicle is dangerous.
The vehicle could slip off the jack and fall on you.
You could be crushed. Never get any part of your
body under a vehicle that is on a jack. If you need
to get under a raised vehicle, take it to a service
center where it can be raised on a lift.
² The jack is designed to use as a tool for changing
tires only. The jack should not be used to lift the
vehicle for service purposes. The vehicle should
be jacked on a firm level surface only. Avoid ice or
slippery areas.282 WHAT TO DO IN EMERGENCIES

JUMP-STARTING PROCEDURES IF BATTERY IS
LOW
WARNING!Take care to avoid the radiator cooling fan whenever
the hood is raised. It can start anytime the ignition
switch is on. You can be hurt by the fan. WARNING!² Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
mission cannot be started this way. Unburned fuel
could enter the catalytic converter and once the en-
gine has started, ignite and damage the converter and
vehicle. If the vehicle has a discharged battery,
booster cables may be used to obtain a start from
another vehicle. This type of start can be dangerous if
done improperly, so follow this procedure carefully.
² Battery fluid is a corrosive acid solution; do not allow
battery fluid to contact eyes, skin or clothing. Don't
lean over battery when attaching clamps or allow the
clamps to touch each other. If acid splashes in eyes or
on skin, flush contaminated area immediately with
large quantities of water.
² A battery generates hydrogen gas which is flammable
and explosive. Keep flame or spark away from the
vent holes. Do not use a booster battery or any other
booster source with an output that exceeds 12 volts.288 WHAT TO DO IN EMERGENCIES

N Front Suspension Ball Joints ..............314
N Steering Shaft Seal ....................314
N Steering Linkage ......................315
N Drive Shaft Universal Joints ..............315
N Body Lubrication .....................315
N Windshield Wiper Blades ................316
N Windshield And Rear Window Washers .....316
N Exhaust System ......................317
N Cooling System .......................318
N Hoses And Vacuum/Vapor Harnesses .......322
N Brakes .............................323
N Master Cylinder Ð ABS Brakes Brake Fluid
Level Check .........................324 N Fuel System Hoses ....................326
N Automatic Transmission ................326
N All Wheel Drive (AWD) .................329
N Front And Rear Wheel Bearings ...........330
N Appearance Care And Protection From
Corrosion ...........................330
N Cleaning The Instrument Panel And
Underseat Cup Holders .................334
m Integrated Power Module (IPM) ............336
m Vehicle Storage ........................337
m Replacement Light Bulbs .................338
m Bulb Replacement ......................339
N Headlights ..........................339296 MAINTAINING YOUR VEHICLE

WARNING!² Use only refrigerants approved by this manufac-
turer for your air conditioning system. Some un-
approved refrigerants are flammable and can ex-
plode, injuring you. Other unapproved
refrigerants can cause the system to fail, requiring
costly repairs.
² Never add air conditioning refrigerant to correct a
non-cooling problem unless pressure gauges are
connected to the system by a certified technician.
Lack of cooling could be due to a restriction and
adding refrigerant may cause a dangerous pres-
sure rise and you could be injured.
Refrigerant Recovery And Recycling
The air conditioning system of your vehicle contains
R-134a, a refrigerant that does not deplete the ozone layer
in the upper atmosphere. The manufacturer recommends that air conditioning service be done by facilities using
refrigerant recycling and recovery equipment that meets
SAE standard J1991.
A/C Air Filter
The filter access door is located under the instrument
panel on the passenger side. To replace the filter slide the
lock toward the rear of the vehicle (unlock position).
Remove the access door and pull the filter downward.
When installing a new filter, ensure its proper orienta-
tion. Align the black arrow on the bottom of the filter
frame with the direction of airflow (away from the
blower motor and towards the center of the car).
Refer to the ªMaintenance Schedulesº section of this
manual for the recommended air conditioning filter
replacement intervals. MAINTAINING YOUR VEHICLE 313
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