
Black plate (43,1)Cadillac STS Owner Manual - 2011
Climate Controls
Dual Climate Control System
The heating, cooling, and ventilation can be controlled
for the vehicle with this system.
Automatic Operation
Vehicles With Heated and Ventilated Seats Shown,Vehicles Without Similar
A. Driver and Passenger Side Power Buttons
B. Ventilated Seat
C. AUTO
D. Recirculation E. Air Conditioning F. Heated Seat
G. Fan Control H. Defrost I. Rear Window Defogger
J. Air Delivery Mode Control AUTO (Automatic):
The system automatically controls
the fan speed, air delivery, air conditioning and
recirculation modes in order to heat or cool the vehicle
to the desired temperature.
To place the system in automatic mode:
1. Press the AUTO button.
2. Adjust the temperature to a comfortable setting, generally, between 21°C (70°F) and 27°C (80°F).
Choosing the coldest or warmest temperature
setting will not cause the system to heat or cool
any faster. If the system is set at the warmest
temperature setting, the system will try to
continuously heat the vehicle and will not adjust
the system down as the vehicle warms up.
To avoid blowing cold air in cold weather, the
system delays turning on the fan until warm air is
available. The system starts out blowing air at the
floor, but can automatically change modes as
the vehicle warms up to maintain the chosen
temperature setting. The length of time needed for
warm up depends on the outside temperature and
the length of time that has elapsed since the
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.
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Black plate (44,1)Cadillac STS Owner Manual - 2011
The display can be changed from English to metric
units through the Driver Information Center (DIC). See
DIC Operation and Displays on page 4‑70.
Manual Operation
O(Driver's Temperature Control): Press to turn the
entire climate control system on or off. Turn the knob to
increase or decrease the temperature inside the
vehicle.
O (Passenger's Temperature Control): Press to turn
the passenger climate control system on. Turn the knob
to increase or decrease the temperature for the front
passenger only. The passenger side power button does
not turn off the climate control system. The system is
set to the same setting as the driver.
y A z (Fan Control): Press to increase or decrease
the fan speed. This cancels automatic operation and
lets the amount of airflow be adjusted manually. Press
AUTO to return to automatic operation.
If the airflow seems low when the fan speed is at the
highest setting, the passenger compartment air filter
may need to be replaced. For more information, see
Passenger Compartment Air Filter
on page 4‑50and
Scheduled Maintenance on page 7‑3. yN
z(Air Delivery Mode): Press to change the
direction of the airflow in the vehicle. This cancels
automatic operation and lets the air delivery mode be
adjusted manually. Press AUTO to return to automatic
operation.
The outboard air outlets always receive airflow
regardless of the mode selected. See Outlet Adjustment
on page 4‑48to change this airflow from the outboard
outlets.
To change the current mode, select one of the following:
Y (Vent): Air is directed to the instrument panel outlets.
\ (Bi-Level): Air is divided between the instrument
panel outlets and the floor outlets. In automatic
operation, cooler air is directed to the upper outlets
and warmer air to the floor outlets.
[ (Floor): Air is directed to the floor outlets, with some
air directed to the windshield and side windows.
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Black plate (45,1)Cadillac STS Owner Manual - 2011
-(Defog): This mode clears the windows of fog or
moisture. Air is directed to the windshield and floor
outlets, with some air directed to the side windows
and outboard panel outlets. When this mode is
selected, the system turns off recirculation and runs
the air-conditioning compressor unless the outside
temperature is at or below freezing. If recirculation is
selected while in the defog mode, it is cancelled after
10 minutes.
If there is fogging on the side windows, remain in defog
or defrost mode until they clear.
0 (Defrost): This mode clears the windshield of fog or
frost more quickly. Air is directed to the windshield, with
some air directed to the side windows and outboard
panel outlets. The air-conditioning compressor runs
automatically in this setting, unless the outside
temperature is at or below freezing. Recirculation
cannot be selected while in the defrost mode.
This mode can also cause the fan speed and air
temperature to increase. ^
(Air Conditioning): Press to turn the air conditioning
off. Press AUTO to return to automatic operation. To
limit fogging on the windshield, the air conditioning
compressor cannot be off while in the defrost mode.
h (Recirculation): Press once to select recirculation
mode or twice to select outside air. If in AUTO mode,
press
honce to select recirculation. This mode
recirculates and helps to quickly cool the air inside the
vehicle. It can be used to prevent outside air and odors
from entering the vehicle.
Recirculation is not available in the defrost mode and
shuts off when defog mode is selected. Both of these
features are designed to limit fogging in the vehicle.
If recirculation is selected during defog mode, it
automatically turns off after 10 minutes.
Using the recirculation for long periods of time might
cause the air inside the vehicle to become too dry or
stuffy. To prevent this from happening, after the air in
the vehicle has cooled, press the recirculation button
again to select outside air or press the AUTO button.
4-45

Black plate (46,1)Cadillac STS Owner Manual - 2011
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
The defogger only works when the ignition is on or
during remote start, if programmed. See“Personal
Settings Menu” underVehicle Personalization
on
page 3‑59for additional information.
= (Rear Window Defogger): Press to turn the rear
window defogger on or off. The rear window defogger
stays on for 10 minutes, before turning off.
If the vehicle's speed is above 48 km/h (30 mph), the
rear defogger stays on continuously. If turned on again,
the defogger only runs for about five minutes before
turning off. The defogger can also be turned off by
turning off the engine. The heated outside rearview mirrors also heat to help
clear fog or frost from the surface of the mirror when
the rear window defogger is on. See
Outside Heated
Mirrors on page 3‑40.
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.
{ (Ventilated Seat): If the vehicle has this feature,
press to turn the driver or passenger side ventilated
seat on. See Heated and Ventilated Seats
on
page 2‑5.
J (Heated Seat): If the vehicle has this feature, press
to turn the driver or passenger side heated seat and
seatback on. See Heated and Ventilated Seats
on
page 2‑5.
4-46

Black plate (77,1)Cadillac STS Owner Manual - 2011
BATTERY NOT CHARGING SERVICE
CHARGING SYS (System)
This symbol appears
with this message.
This message displays when a problem with the
charging system has been detected. Have your vehicle
serviced by your dealer.
BATTERY SAVER ACTIVE
This message displays when the system detects that
the battery voltage is dropping beyond a reasonable
level. The battery saver system starts reducing certain
features of the vehicle that may be noticeable. At the
point that the features are disabled, this message is
displayed. It means that the vehicle is trying to save the
charge in the battery.
Turn off all unnecessary accessories to allow the
battery to recharge.
The normal battery voltage range is 11.5 to 15.5 volts.
To monitor battery voltage on the DIC, press the
information button until BATTERY VOLTS displays.
BATTERY VOLTAGE HIGH
This symbol appears
with this message.
This message displays when the electrical charging
system is overcharging the battery. When the system
detects that the battery voltage is above an estimated
16 volts, this message displays.
To reduce the charging overload, use the vehicle's
accessories:
.Turn on the exterior lamps and radio.
.Set the climate control on AUTO and the fan speed
on the highest setting.
.Turn the rear window defogger on.
The normal battery voltage range is 11.5 to 15.5 volts
when the engine is running. To monitor battery voltage
on the DIC, press the information button until BATTERY
VOLTS displays.
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Black plate (126,1)Cadillac STS Owner Manual - 2011
XM™Satellite Radio Service
XM Satellite Radio Service gives digital radio reception
from coast-to-coast in the 48 contiguous United States,
and in Canada. Just as with FM, tall buildings or hills
can interfere with satellite radio signals, causing the
sound to fade in and out. In addition, traveling or
standing under heavy foliage, bridges, garages,
or tunnels may cause loss of the XM signal for a
period of time.
Cellular Phone Usage
Cellular phone usage may cause interference with
the vehicle's radio. This interference may occur
when making or receiving phone calls, charging the
phone's battery, or simply having the phone on. This
interference causes an increased level of static while
listening to the radio. If static is received while listening
to the radio, unplug the cellular phone and turn it off.
Backglass Antenna
The AM-FM antenna is integrated with the rear window
defogger, located in the rear window. Make sure that the
inside surface of the rear window is not scratched and
that the lines on the glass are not damaged. If the
inside surface is damaged, it could interfere with radio
reception. For proper radio reception, the antenna
connector needs to be properly attached to the post on
the glass. If a cellular telephone antenna needs to be attached to
the glass, make sure that the grid lines for the AM-FM
antenna are not damaged. There is enough space
between the grid lines to attach a cellular telephone
antenna without interfering with radio reception.
Notice:
Using a razor blade or sharp object to clear
the inside rear window can damage the rear window
antenna and/or the rear window defogger. Repairs
would not be covered by the vehicle warranty. Do
not clear the inside rear window with sharp objects.
Notice: Do not apply aftermarket glass tinting
with metallic film. The metallic film in some tinting
materials will interfere with or distort the incoming
radio reception. Any damage caused to your
backglass antenna due to metallic tinting materials
will not be covered by the vehicle warranty.
XM™ Satellite Radio Antenna
System
The XM Satellite Radio antenna is located on the roof
or the rear of the vehicle. Keep the antenna clear of
obstructions for clear radio reception.
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Black plate (18,1)Cadillac STS Owner Manual - 2011
Before Leaving on a Long Trip
To prepare your vehicle for a long trip, consider having
it serviced by your dealer before departing.
Things to check on your own include:
.Windshield Washer Fluid:Reservoir full? Windows
clean —inside and outside?
.Wiper Blades: In good shape?
.Fuel, Engine Oil, Other Fluids: All levels checked?
.Lamps:Do they all work and are lenses clean?
.Tires:Are treads good? Are tires inflated to
recommended pressure?
.Weather and Maps: Safe to travel? Have
up-to-date maps?
Highway Hypnosis
Always be alert and pay attention to your surroundings
while driving. If you become tired or sleepy, find a safe
place to park your vehicle and rest.
Other driving tips include:
.Keep the vehicle well ventilated.
.Keep interior temperature cool.
.Keep your eyes moving —scan the road ahead
and to the sides.
.Check the rearview mirror and vehicle instruments
often.
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Black plate (21,1)Cadillac STS Owner Manual - 2011
Blizzard Conditions
Being stuck in snow can be in a serious situation. Stay
with the vehicle unless there is help nearby. If possible,
use theRoadside Service
on page 8‑8. To get help
and keep everyone in the vehicle safe:
.Turn on the Hazard Warning Flasherson
page 4‑3.
.Tie a red cloth to an outside mirror.
{WARNING:
Snow can trap engine exhaust under the vehicle.
This may cause exhaust gases to get inside.
Engine exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in the snow:
.Clear away snow from around the base of
your vehicle, especially any that is blocking
the exhaust pipe.
.Check again from time to time to be sure
snow does not collect there.
(Continued)
WARNING: (Continued)
.Open a window about 5 cm (two inches) on
the side of the vehicle that is away from the
wind to bring in fresh air.
.Fully open the air outlets on or under the
instrument panel.
.Adjust the Climate Control system to a setting
that circulates the air inside the vehicle and
set the fan speed to the highest setting. See
Climate Control System in the Index.
For more information about carbon monoxide, see
Engine Exhaust on page 3‑36.
Snow can trap exhaust gases under your vehicle.
This can cause deadly CO (carbon monoxide) gas
to get inside. CO could overcome you and kill you.
You cannot see it or smell it, so you might not
know it is in your vehicle. Clear away snow from
around the base of your vehicle, especially any
that is blocking the exhaust.
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