2007 CHRYSLER PACIFICA Owners Manual

Dual-Zone Automatic Temperature Control
The Dual Zone Automatic Temperature Control (ATC)
System automatically maintains the interior comfort level
desired by the driver and front seat passenger. This is
accomplished by using two infrared sensors located in
the center of the instrument panel. The two infrared
sensors independently measure the surface temperature
of the driver and front seat passenger. Based on the
sensor input, the system automatically adjusts the air
temperature, the airflow volume, the airflow distribu-
tion, and amount of inside air recirculation to maintain
front seat occupant comfort, even under changing out-
side weather conditions.
To operate the system, press either theAUTO HIor
AUTO LObuttons. The system now automatically
regulates the heating and air conditioning system includ-
ing blower speed, outlet air temperature, and airflow
distribution through the various outlets within the in-
strument panel. Using theTEMPbuttons, adjust the
Dual-Zone Automatic Temperature Control
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temperature you would like the system to maintain.
When the system is set to your comfort level, it is not
necessary to change the settings. You will experience the
greatest efficiency by allowing the system to function
automatically. The system will operate fully automati-
cally in eitherAUTO HIorAUTO LO. TheAUTO
LOsetting will limit the maximum fan speed and should
be used when more quiet operation is desired. Use the
AUTO HIsetting when the quickest cool-down or
warm-up performance is desired.
NOTE:
•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.
•The temperature can be displayed in U.S. or Metric by
selecting the US/M customer programmable feature.Refer to the “Electronic Vehicle Information Center-
Customer Programmable Features” 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 “DELAY” will appear in the display until the
engine warms up. An estimate of the time remaining
until the “DELAY” is complete will appear periodically
in the display. However, the fan will engage immediately
if the defrost mode is selected or by pushing the blower
switch and manually adjusting the fan speed.
This feature may be disabled using the following proce-
dure:
•Press and hold the Heated Rear Window and Auto LO
buttons for 5 seconds.
•The “DELAY” symbol will flash to indicate that the
feature as been disabled.
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This feature may be enabled using the following proce-
dure:
•Press and hold the Heated Rear Window and Auto HI
buttons for 5 seconds.
•The “DELAY” 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.
Dual/Single Zone Operation
WhenDUALis displayed in the ATC control unit, the
driver and passenger air outlet temperatures can be
individually adjusted from the two independentTEMP
buttons. When a front seat passenger is not present,
pressing theDUALbutton will match the passenger’s
temperature setting to the driver’s temperature setting.
This will help equalize air outlet temperatures across theleft and right side of the instrument panel. The outside
temperature will replace the passenger’s temperature
setting in the display. Pressing theDUALbutton a
second time or adjusting the passenger’sTEMPbutton
will return the system to dual independent temperature
operation.
Manual Operation
This system offers a full complement of manual override
features. The indicator light in both theAUTO HIor
AUTO LObuttons will turn off when the system is
being used in the manual mode. The fan speed, airflow
distribution, and outside air/recirculated air can be
manually adjusted.
NOTE:Each of these features operate independently
from each other. If any one feature is controlled manually,
the remaining features will continue to operate automati-
cally.
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4

The front blower control can be set to any fixed
blower speed by pressing the rocker switch up or
down. This allows the front occupants to control the
volume of air circulated in the vehicle and cancel the auto
mode. The fan will now operate at a fixed speed until
additional speeds are selected or until either theAUTO
HIorAUTO LObuttons are pressed. The system will
continue to automatically adjust air temperature and
airflow distribution.
The operator can also select the direction of the air by
pressing the mode control rocker switch located to the
left of the A/C button and selecting one of the following
positions.Panel Mode
Air comes from the outlets in the instrument panel. Each of
these outlets can be individually adjusted to direct the flow
of air. Moving the knob up, down, left, or right will direct the
air accordingly. The thumbwheel next to each outlet can be
rotated to reduce or shut off the air flow from these outlets.
Panel Outlets
252 UNDERSTANDING YOUR INSTRUMENT PANEL

Bi-Level ModeAir comes from both the instrument panel outlets and
floor outlets. A slight amount of air is also directed
through the defrost and side window demister outlets.
NOTE:In many temperature positions, the bi-level
mode is designed to provide cooler air out of the panel
outlets and warmer air from the floor outlets.
Bi-Level Outlets
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4

Floor Mode
Air comes from the floor outlets. A slight amount of air is
directed through the defrost and side window demister
outlets.Mix Mode
Air comes from the floor, defrost and side window
demist outlets. This mode is not used when operating in
eitherAUTO HIorAUTO LO. This mode should be
used when airflow to the floor and windshield is desired.
Floor OutletsMix Outlets
254 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. If a fog or mist on thewindshield or side glass starts to impair visibility, press
the front blower button and increase the fan speed to
maximum.
NOTE:While operating inAUTO HIorAUTO LO,
the system will not automatically sense the presence fog,
mist, or ice on the windshield. The defrost button must be
pressed to clear the windshield and side glass.
Depress the “A/C” 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.
NOTE:If a fog or mist appears on the windshield or
side glass, press the “A/C” button to engage the com-
pressor or press the defrost button. If a fog or mist on the
Defrost Outlets
UNDERSTANDING YOUR INSTRUMENT PANEL 255
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windshield or side glass starts to impair visibility, press
the front blower button and increase the fan speed to
maximum.
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 button. The recircu-
lation mode should only be used temporarily. The recir-
culate symbol will illuminate in the display when this
button is selected. Push the button a second time to allow
outside air into the vehicle.
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
improve window clearing operation. Recirculation will
be disabled automatically if these modes are selected.
A/C Recirculation Programming
The recirculation control is programmed to cancel the
recirculation mode when the ignition key is turned OFF
and will reset to the outside air mode when the ignition
key is turned “ON”. The frequent use of outside air will
help keep odors from building up within the air
conditioner-heater housing. It is recommended that the
recirculation mode be used as little as possible, especially
in humid climates.
For hot and dry climates, or people who are allergic to
pollen and find frequent use of the recirculation mode
necessary, the recirculation mode can be programmed to
not automatically reset to the outside mode by using the
following procedures:
•Turn the ignition switch to the OFF position.
•Press and hold the recirculation button.
256 UNDERSTANDING YOUR INSTRUMENT PANEL