2006 CADILLAC DTS Owners Manual

Automatic Operation
AUTO9(Automatic Fan):When this position is
selected on the fan control, the system will adjust the fan
speed. If the OnStar
®system is activated when this
position is selected, the climate control fan speed
will lower.
AUTO (Automatic Mode):
1. Turn the fan control to the AUTO position.
2. Turn the mode control to the AUTO position.
3. Adjust the temperature to a comfortable setting
between 68°F (21°C) and 78°F (26°C).
Choosing the coldest or warmest temperature
setting will not cause the system to heat or cool any
faster. 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 to warm
the interior will depend on the outside temperature
and temperature of the vehicle.
4. Wait 20 to 30 minutes for the system to stabilize in
order for the system to regulate automatically. Then
adjust the temperature as necessary to nd your
comfort setting.Do not cover the solar sensor located in the center of
the instrument panel near the windshield. For more
information on the solar sensor, see “Sensors” later in
this section.
After your vehicle is started, the display will show the
interior temperature settings and the outside
temperature.
If the AUTO position is selected on the fan or mode
control, the system will automatically control the
air conditioning compressor. The A/C compressor will
run automatically even at cool outside temperatures
in order to dehumidify the air. The A/C indicator light
will be lit when the system is operating automatically,
even at near freezing outside temperatures. Press
the A/C button on the fan control to turn off the A/C.
For improved window clearing performance in defog
or defrost modes, the A/C compressor will run
automatically in damp cool conditions.
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h(AUTO RECIRCULATION):If the AUTO position
is selected on either the fan or mode control, the
system will automatically control the air inlet to supply
fresh outside air or recirculate the interior air to cool
the car faster. The indicator light on the recirculation
button will light whenever the system switches to
recirculation. You may force outside air by pressing the
button when the light is lit. The next time AUTO fan
or mode is selected, the air inlet will reset back to
AUTO operation.
Manual Operation
9(Fan):Turn the left knob either to the left or right to
adjust the fan speed. Turning this control completely
counterclockwise will turn on the automatic fan
operation. Turning this control to the “O” position will
turn the climate control system off. If the airow seems
low when the fan speed is at the highest setting, the
passenger compartment air lter may need to be
replaced. SeePassenger Compartment Air Filter on
page 3-53.
9(Off):Turn the left control to this position to turn
the entire climate control system off.
To change the current mode, select one of the following
positions using the right control:
AUTO:Turn the control to this position to turn on the
automatic delivery mode operation.
F(Vent):Turn the control to this mode to direct air to
the instrument panel outlets.
*(Bi-Level):Turn the control to this mode to direct
approximately half of the air to the instrument panel
outlets and most of the remaining air to the oor outlets.
In automatic operation, cooler air is directed to the
upper outlets and warmer air to the oor outlets.
7(Floor):Turn the control to this mode to direct most
of the air to the oor outlets with some air directed to
the side window outlets and the windshield.
The mode control can also be used to select the
oor/defog mode. Information on defogging and
defrosting can be found later in this section.
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?(Recirculation):Press this button to keep outside
air from coming in the vehicle. It can be used to
prevent outside air and odors from entering your vehicle
or to help 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.
«ª(Driver’s Temperature Controls):Press these
buttons next to the fan control to manually increase
or decrease the temperature inside your vehicle.
«ª(Passenger’s Temperature Controls):Press
these buttons next to the mode control to manually
increase or decrease the temperature for the front
passenger. If the passenger’s climate control system
is off, pressing one of these buttons will turn it on.
PASS (Passenger’s Climate Control):Press
this button to turn the passenger’s climate control
systems on or off. The temperature selected by the
front passenger will also control the rear system
air temperature unless the rear seat passengers select
their own comfort setting.If the PASS button is pressed to turn the Passenger
temperature setting off, the driver’s temperature
knob will control the temperature for the entire vehicle.
AUX:Press this button to turn the rear climate
control fan on for automatic operation. After the AUX
button is pressed, the indicator light will come on.
Press the button again to turn the auxiliary fan off.
#(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.
The air-conditioning system removes moisture from
the air, so you may notice a small amount of water
dripping underneath your vehicle while idling or after
turning off the engine. This is normal.
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Sensors
The solar sensor, located in the defrost grille, middle of
the instrument panel, monitors the solar radiation.
Do not cover the solar sensor or the system will not
work properly.There is also an interior temperature sensor located
next to the steering wheel that measures the
temperature of the air inside your vehicle.
There is also an exterior temperature sensor located
behind the front grille. This sensor reads the outside air
temperature and helps maintain the temperature inside
the vehicle. Any cover on the front of the vehicle could
cause a false reading in the displayed temperature.
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In order to prevent false temperature readings at
startup, the displayed temperature will not change until
the following occurs:
Vehicle speed is above 10 mph (16 kmh) for
5 minutes.
Vehicle speed is above 32 mph (51 kmh) for
2 and a half minutes.
The climate control system uses the information from
these sensors to maintain your comfort setting by
adjusting the outlet temperature, fan speed, and the air
delivery mode. The system may also supply cooler
air to the side of the vehicle facing the sun. The
recirculation mode will also be used as needed to
maintain cool outlet temperatures.
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 to remove fog or
frost from the windshield more quickly.
W(Floor/Defog):Turning the control to this mode
directs approximately half of the air to the oor outlets
and the remaining air is directed to the side window
outlets and to the windshield. 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.
0(Defrost):Turning the control to this mode directs
most of the air to the windshield and the side window
outlets. In this mode, the system will automatically turn
off recirculation and run the air-conditioning compressor,
unless the outside temperature is at or below freezing.
Recirculation cannot be selected while in the defrost
mode. Do not drive the vehicle until all the windows
are clear.
For professional vehicles, air will be allowed to ow
through the rear outlets. For quicker defrost, press the
AUX button on the front climate control system so
that the light is not lit.
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Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
<(Rear Defogger):Press the center of the control
to turn the rear window defogger on or off. Be sure
to clear as much snow from the rear window as possible.
The rear window defogger will turn off approximately
20 minutes after the button is pressed if your vehicle is
moving at slower vehicle speeds. At higher vehicle
speeds, the rear defogger may stay on continuously.
Each additional press will run the defogger for
approximately 10 minutes.
The heated outside rearview mirrors will heat to help
clear fog or frost from the surface of the mirror when the
rear window defogger is on.
Notice:Do not use a razor blade or sharp object
to clear the inside rear window. Do not adhere
anything to the defogger grid lines in the rear glass.
These actions may damage the rear defogger.
Repairs would not be covered by your warranty.
Outlet Adjustment
For the front outlets, use the thumbwheel located below
each outlet to change the direction of the airow. Use the
thumbwheel located next to the outlets to shut the airow
or to open the outlets and re-direct the air.
For the rear outlets, slide the lever left or right and up
or down to change the direction of the airow.
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 deectors 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.
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Rear Climate Control System
If your vehicle has a rear climate-control system, the
rear-seat passengers can use it to adjust the direction of
the airow, 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.
If the AUX button located on the front climate control
panel is pressed, the rear climate control system will be
turned on. The rear system will operate in automatic
mode and the temperature settings selected for the front
climate control panel will also be selected for the rear
passengers.
If the rear passenger would like to adjust the rear
climate control system, they can select a different
temperature and a different mode or fan speed.
Whenever the rear passengers have adjusted settings
on the rear climate control system, the AUX light is lit on
the front climate control system. The driver can turn
off the auxiliary fan by pressing the AUX button.
When the front climate control system is turned off or
in defrost mode, the rear climate control system is
turned off. The rear system will turn back on once
another front mode is selected.
For more information on how to use the climate
control system, seeDual Climate Control System on
page 3-44. For more information on the air outlets,
seeOutlet Adjustment on page 3-50.
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Automatic Operation
«A ª(Fan):Press this button until AUTO appears
on the display to place the system in automatic mode.
When automatic operation is active, the system will
automatically control the fan speed. If in auto fan mode,
pressing the up arrow button will cancel automatic
operation and places the system in manual mode. If in
auto mode, pressing the down arrow will turn the
rear climate control system off.
«Nª(Mode):Press the this button until AUTO
appears on the display to place the system in automatic
mode. When automatic operation is active, the system
will automatically control the air delivery mode.
Manual Operation
«A ª(Fan):Press these up or down arrow
buttons to increase or decrease the fan speed.
«bª(Temperature):Press these up or down
arrow buttons to increase or decrease the temperature
for the rear seat passengers. Once the rear setting
temperature is altered from following the front setting
temperature, it will no longer follow changes to the front
setting temperature until the front climate control
AUX button resets it.
«Nª(Mode):Press these buttons to change the
air delivery mode. If in AUTO air delivery mode, pressing
the up arrow button will cancel automatic operation
and place the system in manual mode.
Y(Vent):This mode directs air to the upper outlets.
%(Bi-Level):This mode directs half the air to
the upper outlets, and the other half to the oor outlets.
[(Floor):This mode directs the air to the oor
outlets.
For more information on how to use the front climate
control system, seeDual Climate Control System
on page 3-44.
For more information on the air outlets, seeOutlet
Adjustment on page 3-50. 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.
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