climate control CADILLAC DTS 2007 1.G User Guide

If the battery continues to discharge, even with
the engine idling at a higher rpm setting, some
electrical loads will automatically be reduced. When
this occurs, the rear window defogger may take
slightly longer to clear the glass, the heated seats
may not get as warm as they usually do and the
climate control fan may cut back to a lower speed.
For more battery saving information, see “Battery
Saver Active Message” underDIC Warnings and
Messages on page 246.
Electric Power Management
The vehicle has Electric Power Management (EPM)
that estimates the battery’s temperature
and state of charge. It then adjusts the voltage for
best performance and extended life of the battery.
When the battery’s state of charge is low, the
voltage is raised slightly to quickly put the charge
back in. When the state of charge is high, the
voltage is lowered slightly to prevent overcharging.
If the vehicle has a voltmeter gage or voltage
display on the Driver Information Center (DIC),
you may see the voltage move up or down.
This is normal. If there is a problem, an alert
will be displayed.The battery can be discharged at idle if the
electrical loads are very high. This is true for all
vehicles. This is because the generator (alternator)
may not be spinning fast enough at idle to produce
all the power that is needed for very high electrical
loads.
A high electrical load occurs when several of the
following loads are on: headlamps, high beams, fog
lamps, rear window defogger, climate control fan at
high speed, heated seats, engine cooling fans,
trailer loads, and loads plugged into accessory
power outlets.
EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator’s
output and the vehicle’s electrical needs. It can
increase engine idle speed to generate more
power, whenever needed. It can temporarily
reduce the power demands of some accessories.
Normally, these actions occur in steps or levels,
without being noticeable. In rare cases at the
highest levels of corrective action, this action
may be noticeable to the driver. If so, a Driver
Information Center (DIC) message might be
displayed, such as Battery Saver Active or Service
Battery Charging System. If this message is
displayed, it is recommended that the driver reduce
the electrical loads as much as possible. SeeDIC
Warnings and Messages on page 246.
201

Ashtray(s) and Cigarette Lighter
Notice:If you put papers, pins, or other
ammable items in the ashtray, hot cigarettes
or other smoking materials could ignite
them and possibly damage your vehicle.
Never put ammable items in the ashtray.
Front Ashtray
With the full oor console, the ashtray is located
below the climate control system. To open, push
down and then release the cover. To clean the
ashtray, push the lip of the ashtray to remove it.
Push the opposite side of the ashtray’s lip to install.
For vehicles without the oor console, pull the tray
located below the climate controls to reveal the
ashtray. The ashtray can be removed by pulling
on the ledge located at the top of the ashtray.
Rear Ashtray
The ashtrays are located on the door armrests.
To use an ashtray, lift the lid.
Cigarette Lighter
Notice:Holding a cigarette lighter in while it is
heating does not let the lighter back away from
the heating element when it is hot. Damage from
overheating can occur to the lighter or heating
element, or a fuse could be blown. Do not hold a
cigarette lighter in while it is heating.
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. SeeAccessory Power
Outlet(s) on page 208for more information.
209

Analog Clock
The analog clock is located on the instrument
panel above the radio. The clock is not connected
with any other vehicle system and runs by
itself. To adjust the clock, do the following:
1. Locate the adjustment button directly below
the clock face.
2. Push and hold the adjustment button to
advance the clock hands. Holding the
button down will cause the clock to advance
faster. Release the buttonbeforeyou get
to the desired time.
3. Push and release the button to increase the
time by one minute increments until the
desired time is reached.
Climate Controls
Dual Climate Control System
With this system you can control the heating,
cooling, and ventilation for the vehicle.
To avoid window fogging on rainy and humid
days at temperatures above freezing, run the
air conditioning compressor. Also, it is best
to avoid the use of recirculation mode except
when maximum air conditioning performance
is needed for a short amount of time to avoid
exterior odors and fogging.
Dual Climate Control System
210

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.
Dual Climate Control System for Vehicles with
Rear Climate Control
211

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 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.
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 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.
Manual Operation
9(Fan):Turn the left control 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 220.
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.
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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. In this mode, the system
will automatically use outside air. If recirculation
is selected, it will only stay on for three minutes
to reduce windshield fogging. 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. It is used to
prevent the air inside the vehicle from becoming
too dry. Press this button to turn the outside
air mode on or off. When the button is pressed,
the indicator light will come on. Pressing the
recirculation button will cancel this mode.
?(Recirculation):Press this button to keep
outside air from coming in the vehicle. It is used
to prevent outside air and odors from entering the
vehicle or to help cool the air inside the vehicle
faster. Press this button to turn the recirculation
mode on or off. When the button is pressed,
an indicator light will come on.
wx(Driver’s Temperature Controls):Press
these buttons next to the fan control to manually
increase or decrease the temperature inside
your 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
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.
213

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
will come on. Press the button again to turn the
auxiliary fan off. SeeRear Climate Control System
on page 218.
#(Air Conditioning):Press the center of the
left control 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.
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.
214

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.In order to prevent false temperature readings
at start up, 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.
215

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 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.
216

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 210. For more information on the air
outlets, seeOutlet Adjustment on page 217.
218