2003 CADILLAC DEVILLE climate control

Ashtrays and Cigarette Lighter
Notice:Don't put papers or other ¯ammable items
into your ashtrays. Hot cigarettes or other smoking
materials could ignite them, causing a damaging ®re.
Front Ashtray
With the full ¯oor console, the ashtray is located below
the climate control system. To open, push down on
the cover. To clean the ashtray, lift it out by gripping
the sides.
For vehicles without the ¯oor console, pull the tray
located below the radio to reveal the ashtray. The
ashtray can be removed for cleaning.
Rear Ashtray
The ashtrays are located on the door armrests.
To use an ashtray, lift the lid.
Cigarette Lighter
Notice:Don't hold a cigarette lighter in with your
hand while it is heating. If you do, it won't be able to
back away from the heating element when it's
ready. That can make it overheat, damaging the
lighter and the heating element.
The cigarette lighter is located near the front ashtray.
Press the lighter all the way in and release it. It will pop
back out by itself once the element has heated for use.
Cigarette lighters can be used to provide electrical
power to accessories. See
Accessory Power Outlets
on page 3-27for more information.
3-28

Climate Controls
Dual Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
Automatic Operation
AUTO (Automatic):When this button is pressed and
the temperature is set, the system will automatically
control the inside temperature, the air delivery mode and
the fan speed. AUTO will appear on the display.
1. Press the AUTO button.
2. Adjust the temperature to a comfortable setting
between 70ÉF (21ÉC) and 80ÉF (27ÉC).
Choosing the coldest or warmest temperature
setting will not cause the system to heat or cool any
faster. If you set the system at the warmesttemperature setting, the system will remain in
manual mode at that temperature and it will not go
into automatic mode.
In cold weather, the system will start at reduced fan
speeds to avoid blowing cold air into your vehicle
until warmer air is available. The system will
start out blowing air at the ¯oor but may change
modes automatically as the vehicle warms up
to maintain the chosen temperature setting. The
length of time needed for warm up will depend on
the outside temperature and the length of time
that has elapsed since your vehicle was last driven.
3. Wait for the system to regulate. This may take from
10 to 30 minutes. Then adjust the temperature, if
necessary.
Do not cover the solar sensor located in the center of
the instrument panel, near the windshield. For more
information on the solar sensor, seeSensorslater in this
section.
When your vehicle is ®rst started, the display will show
the driver's temperature setting, the fan speed, the
air delivery mode and the outside temperature.
When the ENG/MET (English/metric) button on the
Driver Information Center (DIC) is pressed, the display
will show readings in Fahrenheit or Celsius. Use the
ENG/MET button to toggle between them.
3-29

Manual Operation
yMODEz:Pressing the MODE switch and changing
the mode cancels automatic operation and places the
system in manual mode. Press AUTO to return to
automatic operation.
To change the current mode, select one of the following:
F(Vent):This mode directs air to the instrument
panel outlets.
*(Bi-Level):This mode directs approximately half of
the air to the instrument panel outlets, and then
directs most of the remaining air to the ¯oor outlets.
Some air may be directed toward the windshield.
In automatic operation, cooler air is directed to the upper
outlets and warmer air to the ¯oor outlets.
7(Floor):This mode directs most of the air to the
¯oor outlets with some air directed to the outboard
outlets (for the side windows) a little air directed to the
windshield.
The MODE switch can also be used to select the
¯oor/defog mode. Information on defogging and
defrosting can be found later in this section.
y9z(Fan):Press this switch to increase or
decrease the fan speed. Pressing this switch cancels
automatic operation and places the system in manual
mode. Press AUTO to return to automatic operation.
If the air¯ow seems low when the fan speed is at
the highest setting, the passenger compartment air ®lter
may need to be replaced. For more information, see
Passenger Compartment Air Filter on page 3-36andPart A: Scheduled Maintenance Services on
page 6-4.
?(Recirculation):This mode keeps outside air from
coming in the vehicle. It can be used to prevent outside
air and odors from entering your vehicle or to help heat or
cool the air inside your vehicle more quickly. Press this
button to turn the recirculation mode on or off. When the
button is pressed, an indicator light will come on. The
air-conditioning compressor also comes on.
Driver's Temperature Knob:Press this knob to turn
the entire climate control system on or off. Turn this knob
clockwise or counterclockwise to manually increase or
decrease the temperature inside your vehicle.
3-30

yPASS TEMPz(Passenger's
Temperature):Press this switch to turn the passengers'
climate control systems on. Press this switch to
manually increase or decrease the temperature for the
front passenger.
PASS OFF (Passenger's Climate Control):Press this
button to turn all passenger climate control systems off.
If the passenger's temperature switch is turned off, the
driver's temperature knob will control the temperature for
the entire vehicle.
A/C (Air Conditioning):Press this button to override
the automatic system and turn the air-conditioning
system on or off. When in AUTO the air-conditioning
compressor will come on automatically, as necessary.
On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for your vehicle to cool down. It also helps
the system to operate more efficiently.For quick cool down on hot days:
1. Select the vent mode.
2. Select the recirculation mode.
3. Select A/C.
4. Select the coolest temperature.
5. Select the highest fan speed.
6. Open all outlets.
Using these settings together for long periods of time
may cause the air inside your vehicle to become too dry.
To prevent this from happening, after the air in your
vehicle has cooled, turn the recirculation mode off.
The air-conditioning system removes moisture from the
air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling
or after turning off the engine. This is normal.
If your vehicle has the memory option, it can be used to
recall your climate control settings. For more information,
see
Climate Controls Personalization on page 3-39.
3-31

Sensors
The solar sensor on your vehicle monitors the solar
radiation and the air inside your vehicle, then uses the
information to maintain the selected temperature by
initiating needed adjustments to the temperature, the fan
speed and the air delivery system. The system may
also supply cooler air to the side of the vehicle facing the
sun. The recirculation mode will also be activated, as
necessary. Do not cover the solar sensor located in the
middle of the instrument panel, near the windshield,
or the system will not work properly.There is also a sensor located behind the front grill.
This sensor reads the outside air temperature and helps
to maintain the temperature inside the vehicle. Any
cover on the front of the vehicle could cause a false
reading in the temperature.
Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass. This
can be minimized if the climate control system is
used properly. There are two modes to clear fog from
your windshield. Use the ¯oor/defog mode to clear
the windows of fog or moisture and warm the
passengers. Use the defrost mode (FRONT) to remove
fog or frost from the windshield more quickly.
yMODEz:Press this button until the ¯oor/defog
symbol appears on the display.
.(Floor/Defog):This mode directs the air equally
between the windshield and the ¯oor outlets. When you
select this mode, the system turns off recirculation
and runs the air-conditioning compressor unless
the outside temperature is at or below freezing. The
recirculation mode cannot be selected while in the
¯oor/defog mode.
3-32

Operation Tips
·
Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the ¯ow of air into your vehicle.
·Use of non-GM approved hood de¯ectors may
adversely affect the performance of the system.
·Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
·If the air¯ow seems low when the fan speed is at
the highest setting, the passenger compartment
air ®lter may need to be replaced. For more
information, see
Passenger Compartment Air Filter
on page 3-36andPart A: Scheduled Maintenance
Services on page 6-4.
Rear Climate Control System
Your vehicle has a rear climate-control system that
allows the rear-seat passengers to adjust the direction
of the air¯ow, the fan speed and the temperature for the
rear-seating area. This system also works with the
main climate-control system in your vehicle.
The control panel for this system is located on the back
of the center console.
3-34

yPASS TEMPz:Press this switch located on the
main climate control panel in the front of the vehicle on
the instrument panel to turn on the system.
OFF:Turn the mode knob located on the rear climate
control panel to this position to turn off the air¯ow.
If the PASS OFF button located on the main climate
control panel is pressed, the rear climate control system
will be turned off and the settings selected for the
main climate control panel will also be selected for the
rear seat passengers.
For more information on how to use the climate control
system, see
Dual Climate Control System on
page 3-29. For more information on the air outlets, seeOutlet Adjustment on page 3-33.
Automatic Operation
AUTO (Automatic):Press the MODE button until
AUTO appears on the display to place the system in
automatic mode. When automatic operation is active, the
system will control the inside temperature, the air
delivery mode and the fan speed.
Manual Operation
yMODEz:Pressing this switch cancels automatic
operation and places the system in manual mode. Select
the AUTO mode to return to automatic operation.
To change the current mode, select one of the following:
F(Vent):This mode directs air to the upper outlets,
with some air directed to the ¯oor outlets.
*(Bi-Level):This mode directs half the air to the
upper outlets, and then directs the remaining air to the
¯oor outlets.
7(Floor):This mode directs the air to the ¯oor
outlets.
3-35

y9z(Fan):Pressing this switch cancels automatic
operation and places the system in manual mode.
Press this switch to increase or decrease the fan speed.
Press the MODE switch until AUTO is displayed to
return to automatic operation.
yTEMPz(Temperature):Press this switch to
increase or decrease the temperature for the rear seat
passengers.
For cool air to be sent to the rear of the vehicle, the
air-conditioning system on the main climate-control
panel must be on. If it is not on, then the temperature in
the rear of the vehicle will remain at cabin temperature.
Be sure to keep the area under the front seats clear
of any objects so that the air inside of your vehicle can
circulate effectively.
Passenger Compartment Air Filter
The passenger compartment air ®lter traps most of the
pollen from the air entering your vehicle. Like your
vehicle's engine air cleaner/®lter, it may need to
be changed periodically. For how often to change the
passenger compartment air ®lter, see
Part A: Scheduled
Maintenance Services on page 6-4.
The access panel for the passenger compartment air
®lter is located under the hood near the windshield,
on the passenger's side of the vehicle.
3-36