Page 201 of 470

Black plate (39,1)Cadillac DTS Owner Manual - 2011
The heated outside rearview mirrors will turn on 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.
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 the
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.
4-39
Page 202 of 470

Black plate (40,1)Cadillac DTS Owner Manual - 2011
In order to prevent false temperature readings at
startup, the displayed temperature will not change until
the following occurs:
.Vehicle speed is above 16 km/h (10 mph) for
5 minutes.
.Vehicle speed is above 51 km/h (32 mph) 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.
Outlet Adjustment
For the front outlets, use the thumbwheel located below
each outlet to change the direction of the airflow. Use
the thumbwheel located next to the outlets to shut the
airflow 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 airflow.
Operation Tips
.Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may block
the flow of air into your vehicle.
.Use of non-GM approved hood deflectors 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.
Rear Climate Control System
For vehicles with a rear climate control system, the rear
seat passengers can adjust the direction of the airflow,
fan speed and temperature for the rear seating area.
This system also works with the main climate control
system in the vehicle.
4-40
Page 203 of 470

Black plate (41,1)Cadillac DTS Owner Manual - 2011
The rear climate control system is located on the back
of the center console.A. Display
B. Fan Control C. Temperature Control
D. Air Delivery Mode Control
AUX (Auxiliary): Press the AUX button located on
the front climate control panel to turn the rear climate
control system on or off. When turned on the rear
system operates in automatic mode and the
temperature settings selected for the front climate
control panel will also be selected for the rear
passengers. To adjust the rear climate control system, the rear
passenger can select a different temperature, 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.
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 front climate
control system, see
Dual Climate Control System
on
page 4‑34. For more information on the air outlets, see
Outlet Adjustment on page 4‑40.
Automatic Operation
« A ª(Fan Control): Press 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(Air Delivery Mode Control): Press until
AUTO appears on the display to place the system in
automatic mode. When automatic operation is active,
the system controls the air delivery mode.
4-41
Page 204 of 470

Black plate (42,1)Cadillac DTS Owner Manual - 2011
Manual Operation
« A ª(Fan Control):Press to increase or
decrease the fan speed.
« bª(Temperature Control): Press to increase or
decrease the temperature for the rear seat passengers.
Once the rear temperature setting is changed from
following the front temperature setting, it will no longer
follow changes to the front temperature setting until the
front climate control AUX button resets it.
« Nª(Air Delivery Mode Control): 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): Air is directed to the upper outlets.
%(Bi-Level): Air is divided between the upper outlets
and the floor outlets.
[(Floor): Air is directed to the floor outlets.
Passenger Compartment Air Filter
The passenger compartment air filter traps most of the
pollen from the air entering the vehicle. The filter may
need to be changed periodically. For how often to
change the passenger compartment air filter, see
Scheduled Maintenance on page 7‑3.
The access panel for the passenger compartment air
filter is located under the hood near the windshield, on
the passenger's side of the vehicle.
4-42
Page 205 of 470
Black plate (43,1)Cadillac DTS Owner Manual - 2011
To access the passenger compartment air filter:1. Use a tool to remove the cover. If the vehicle has tabs that allow the cover to be unlatched with your
fingers, a tool will not be needed for this step.2. Then, insert a tool behind the push pin located onthe inboard side of the air filter compartment to
carefully pry the pin out.
4-43
Page 206 of 470

Black plate (44,1)Cadillac DTS Owner Manual - 2011
3. To remove the air filter, insert a tool between theair filter and the compartment wall on the outboard
side of the vehicle. Then, push in to flatten the pin
holding the air filter in place. Gently remove the air
filter and any loose debris that may be inside the
air filter compartment.
4. Insert the new air filter by pushing until you hear a click. Then, reinstall the push pin and snap the
cover into place.
Warning Lights, Gauges, and
Indicators
Warning lights and gauges can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to the
warning lights and gauges could prevent injury.
Warning lights come on when there might be or there is
a problem with one of the vehicle's functions. Some
warning lights come on briefly when the engine is
started to indicate they are working.
Gauges can indicate when there might be or there is
a problem with one of the vehicle's functions. Often
gauges and warning lights work together to indicate a
problem with the vehicle.
When one of the warning lights comes on and stays on
while driving, or when one of the gauges shows there
could be a problem, check the section that explains
what to do. Follow this manual's advice. Waiting to do
repairs can be costly and even dangerous.
4-44
Page 207 of 470
Black plate (45,1)Cadillac DTS Owner Manual - 2011
Instrument Panel Cluster
English Shown, Metric Similar
4-45
Page 208 of 470
Black plate (46,1)Cadillac DTS Owner Manual - 2011
Speedometer and Odometer
The speedometer shows the speed in both miles
per hour (mph) and kilometers per hour (km/h). See
“MPH (km)”underDIC Operation and Displays
on
page 4‑60for more information.
The odometer mileage can be checked without the
vehicle running. The vehicle's odometer works together
with the driver information center. Trip A and Trip B can
be set on the odometer. See “Trip Fuel”underDIC
Operation and Displays
on page 4‑60for more
information.
If the vehicle ever needs a new odometer installed, the
new one is set to the correct mileage total of the old
odometer.
Tachometer
This gauge indicates
the engine speed
in revolutions per
minute (rpm).
4-46