2008 CADILLAC DTS display

Automatic Operation
AUTO9(Automatic Fan):When this position is
selected on the fan control, the system adjusts 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
the vehicle until warmer air is available. The system
starts 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 depends
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 the 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 automatically controls 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 is 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 runs automatically.
h(AUTO RECIRCULATION):If the AUTO position is
selected on either the fan or mode control, the system
automatically controls 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 recirculation button when
the light is lit. For vehicles without rear climate controls,
press the outside air button to force outside air. The next
time AUTO fan or mode is selected, the air inlet will reset
back to AUTO operation.
3-43

Manual Operation
9(Fan):Turn the left control knob clockwise or
counterclockwise 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 3-51.
9(Off):Turn the left control knob to this position to
turn the entire climate control system off. Outside air
still enters the vehicle and is directed to the oor.
The airow direction and temperature can be adjusted,
as indicated below.
If the temperature is adjusted while the system is off,
the display will light to show the current settings.
Mode Control:Turn the right knob clockwise or
counterclockwise to change the current airow mode.
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.
If recirculation is selected, it only stays on for
three minutes to reduce windshield fogging.
The mode control can also be used to select the oor/
defog mode. In this mode, the system automatically
uses outside air. Information on defogging and
defrosting can be found later in this section.
:(Outside Air):Press this button to allow outside
air to come into the vehicle. Press this button to turn the
outside air mode on or off. When the button is pressed,
the indicator light comes on. Pressing the recirculation
button will cancel this mode.
3-44

?(Recirculation):Press this button to recirculate
cabin air through the vehicle. An indicator light below the
button comes on to show that this mode is activated.
This mode can be used to prevent outside air and odors
from entering the vehicle or to help cool the air inside
the vehicle more quickly. This mode cannot be selected
while in the defog or defrost modes. If you try to
select the recirculation mode, the indicator light ashes
three times and turns off.
Operation in this mode during periods of high humidity
and cool outside temperatures may result in increased
window fogging. If window fogging is experienced, select
the defrost mode.
wx(Driver’s Temperature Controls):Press these
buttons next to the fan control to manually increase
or decrease the temperature inside the vehicle.
wx(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 turns it on.PASS (Passenger’s Climate Control):Press this
button to turn the passenger’s climate control systems
on or off. When the passenger’s climate control
system is on, the passenger’s temperature setting is
displayed. The temperature selected by the front
passenger also controls 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:If your vehicle has a rear climate control
system, press this button to turn the rear climate control
fan on for automatic operation. After the AUX button
is pressed, the indicator light comes on. Press the button
again to turn the auxiliary fan off. SeeRear Climate
Control System on page 3-49.#(Air Conditioning):Press the center of the left
control knob to override the automatic system and turn
the air conditioning system on or off. When in AUTO,
the air conditioning compressor comes on automatically,
as necessary.
The air conditioning system removes moisture from the
air, so a small amount of water may drip underneath
the vehicle while idling or after turning off the engine.
This is normal.
3-45

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.
3-46

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 km/h)
for 5 minutes.
Vehicle speed is above 32 mph (51 km/h)
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):Turn the control to this mode to
direct 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):Turn the control to this mode to direct
most of the air to the windshield and the side window
outlets. In this mode, the system automatically turns off
recirculation and runs 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.
3-47

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
automatically controls 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
automatically controls 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 splits the air between
the upper outlets and 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 3-42.
For more information on the air outlets, seeOutlet
Adjustment on page 3-48. Be sure to keep the area
under the front seats clear of any objects so that the
air inside of the vehicle can circulate effectively.
3-50

Speedometer and Odometer
The speedometer lets you see your speed in both miles
per hour (mph) and kilometers per hour (km/h). See
“MPH (km)” underDIC Operation and Displays on
page 3-70for more information.
The odometer mileage can be checked without the
vehicle running. Your vehicle’s odometer works together
with the driver information center. You can set a
Trip A and a Trip B odometer. See “Trip Fuel” under
DIC Operation and Displays on page 3-70for more
information.
If your vehicle ever needs a new odometer installed, the
new one will be set to the correct mileage total of the
old odometer.
Tachometer
This gage indicates
the engine speed in
revolutions per
minute (rpm).
3-55

Driver Information Center (DIC)
The Driver Information Center (DIC) gives you the
status of many of your vehicle’s systems. The DIC is
also used to display warning/status messages. All
messages will appear in the DIC display located at the
bottom of the instrument panel cluster, below the
tachometer and speedometer. The DIC buttons are
located on the instrument panel, to the left of the
steering wheel.
The DIC comes on when the ignition is on. After a short
delay, the DIC will display the information that was
last displayed before the engine was turned off.
The top line of the DIC display shows the vehicle system
information and the warning/status messages. The
bottom line of the DIC display shows the odometer on
the left side. The bottom line of the DIC display also
shows a digital speedometer on the right side.
If a problem is detected, a warning message will appear
on the display. Be sure to take any message that
appears on the display seriously and remember that
clearing the message will only make the message
disappear, not correct the problem.
DIC Operation and Displays
The Driver Information
Center (DIC) has different
displays which can be
accessed by pressing the
DIC buttons located on
the instrument panel, to the
left of the steering wheel.
3Trip/Fuel:Press this button to scroll through the
trip and fuel displays. See “Trip/Fuel Display Menu
Items” following for more information on these displays.
TVehicle Information:Press this button to scroll
through the vehicle information displays. See “Vehicle
Information Display Menu Items” following for more
information on these displays.
UCustomization:Press this button to scroll through
each of the customization features. SeeDIC Vehicle
Customization on page 3-87for more information on the
customization features.
3-70