2004 DODGE GRAND CARAVAN ECO mode

speed positions. This allows the second seat occupants to
control the volume of air circulated in the rear of the
vehicle.
CAUTION!Interior air enters the Manual Rear Zone Climate
Control system through an intake grille located in
the passenger side trim panel behind the third seat.
The heater outlets are located in the passenger side
trim panel just behind the sliding door. Do not block
or place objects directly in front of the inlet grille or
heater outlets. The electrical system could overload
causing damage to the blower motor. Rear Temperature And Mode Control
When the center knob on the front climate control unit is
set to the ªREARº position, the second seat occupants
also have control of the rear temperature and modes as
follows:
² The rear temperature knob controls both the rear
temperature and mode. When the temperature knob is
in the cold position, cold air will be delivered from the
headliner outlets. As the rear temperature knob is
turned towards hot, the air will get warmer, and the
air will be delivered from both the headliner and floor
outlets. When the rear temperature knob reaches the
full hot position, all of the air will be delivered from
the floor outlets.
² When the center knob on the front climate control unit
is set to any position other than ªREARº, the rear UNDERSTANDING YOUR INSTRUMENT PANEL 207
4

temperature selection follows the setting of the driv-
er's temperature control on the front climate control
unit. The rear mode selection follows the setting of the
front mode control.
Rear Economy Mode
If rear economy mode is desired, set the center knob on
the front control unit to the ªREARº position. Turn the
A/C button OFF and select any mode except ªMIXº or
ªDEFROSTº.
The rear temperature knob and the rear blower speed can
be adjusted as desired by the second seat occupants.
Infrared Three-Zone Automatic Temperature
Control Ð If Equipped
The Infrared Three-Zone Automatic Temperature Control
System automatically maintains the interior comfort level
desired by the driver and all passengers. This is accom-
plished by using three infrared sensors, two located in
the center of the instrument panel and one in the rear control unit. The three infrared sensors independently
measure the surface temperature of the driver and pas-
sengers. Based on the sensor input, the system automati-
cally adjusts the air temperature, the air flow volume,
and amount of outside air recirculation. This maintains a
comfortable temperature even under changing condi-
tions.
Operation of the system is quite simple. Begin by press-
ing the auto rocker switch to the ªHIº or ªLOº position,
the word ªAUTOº will illuminate in the front ATC208 UNDERSTANDING YOUR INSTRUMENT PANEL

display along with ªHIº or ªLOº. The system will then
automatically regulate the amount of air flow. Next, dial
in the temperature you would like the system to maintain
by pressing the driver's or passenger's temperature con-
trol button. The rear temperature can only be adjusted
from the front when the ªREAR SYSTEMº knob on the
front ATC unit is in the ªAUTOº position. Once the
desired temperature is displayed, the system will achieve
and maintain that comfort level automatically. When the
system is set up for your comfort level, it is not necessary
to change the settings. You will experience the greatest
efficiency by simply allowing the system to function
automatically.
NOTE:
² It is not necessary to move the temperature settings for
cold or hot vehicles. The system automatically adjusts
the temperature, mode and fan speed to provide
comfort as quickly as possible. ² The temperature can be displayed in U.S. or Metric by
selecting the US/M customer programmable feature.
Refer to the ªOverhead Console-Customer Program-
mable Featuresº in Section 3 of this manual.
To provide you with maximum comfort in the automatic
mode, during cold start-ups the blower fan will remain
off and ªDELAYº will appear in the front ATC display
until the engine warms up. Also, an estimate of the time
remaining until the ªDELAYº is over will appear peri-
odically in the display. However, the fan will engage
immediately if the defrost mode is selected or by rotating
the blower control to any fixed blower speed.
This feature may be disabled using the following proce-
dure:
² Press and hold the Heated Rear Window and Auto LO
buttons for 5 seconds. UNDERSTANDING YOUR INSTRUMENT PANEL 209
4

² The ªDELAYº symbol will flash to indicate that the
feature as been disabled.
This feature may be enabled using the following proce-
dure:
² Press and hold the Heated Rear Window and Auto HI
buttons for 5 seconds.
² The ªDELAYº symbol will flash to indicate that the
feature as been enabled.
Power Button
This button turns the entire system ON/OFF. When the
system is turned on it will return to the previous settings. Manual Operation
This system offers a full complement of manual override
features. The ªAUTOº symbol in the front ATC display
will be turned off when the system is being used in the
manual mode.
The left blower control knob can be set to any fixed
blower speed by rotating the knob from low to high. This
allows the front occupants to control the volume of air
circulated in the vehicle and cancel the ªAUTOº mode.
The operator can also select the direction of the air by
rotating the right mode control knob to one of the
following positions.210 UNDERSTANDING YOUR INSTRUMENT PANEL

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
4

improve window clearing operation. Recirculation will
be disabled automatically if these modes are selected.
Auxiliary Rear Automatic Temperature Control Ð
If Equipped
The Rear Automatic Temperature Control System has
floor air outlets to the rear of the right side sliding door
and overhead outlets at each outboard rear seating
position. The unit provides heated air through the floor
outlets or cool, dehumidified air through the headliner
outlets.
The ªREAR SYSTEMº knob for the Rear Automatic
Temperature Control System is on the front ATC control
unit located on the instrument panel.
Selecting the ªAUTOº position for the Rear Automatic
Temperature Control System from the front ATC control
unit, illuminates a ªLOCKº symbol in the rear display.
The rear temperature and air source are controlled from
the front ATC control unit. The ªREAR SYSTEMº knob on the front ATC control unit
has three positions, ªREAR CONTROLº, ªOFFº, and
ªAUTOº. Only when the ªREAR SYSTEMº knob is in the
ªREAR CONTROLº position do the second seat occu-
pants have control of the Rear Automatic Temperature
Control System.
The Rear Automatic Temperature Control System is
located in the headliner near the center of the vehicle.214 UNDERSTANDING YOUR INSTRUMENT PANEL

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
4

Rear Washer Operation Ð Automatic
Temperature Control Only
Press and hold the button as long as spray is
desired. If the switch is depressed while the wipers
are on, the wipers will operate for a few seconds
after the switch is released then resume the previously set
mode of intermittent wiper or continuous wipe. If the
switch is depressed when the wipers are off, the wipers
will operate for two cycles, then turn off.
NOTE: The washers will stop spraying if the switch is
pressed longer than 10 seconds.
Adding Washer Fluid
The fluid reservoir for the windshield washers and the
rear window washer is shared. It is located in the front of
the engine compartment on the passenger side and
should be checked for fluid level at regular intervals. Fill the reservoir with windshield washer solvent (not radia-
tor antifreeze) and operate the system for a few seconds
to flush out the residual water.
The washer fluid reservoir will hold a full gallon of fluid
when the Low Washer Fluid Light illuminates. UNDERSTANDING YOUR INSTRUMENT PANEL 221
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