2013 CADILLAC CTS air conditioning

Black plate (4,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
iv Introduction
Danger, Warnings, and
Cautions
Warning messages found on vehicle
labels and in this manual describe
hazards and what to do to avoid or
reduce them.
Dangerindicates a hazard with a
high level of risk which will result in
serious injury or death.
Warning orCaution indicates a
hazard that could result in injury or
death.
{WARNING
These mean there is something
that could hurt you or other
people.
Notice: This means there is
something that could result in
property or vehicle damage. This
would not be covered by the
vehicle's warranty.
A circle with a slash through it is a
safety symbol which means “Do
Not,” “Do not do this,” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message,
gauge, or indicator.
M: This symbol is shown when
you need to see your owner manual
for additional instructions or
information.
*: This symbol is shown when
you need to see a service manual
for additional instructions or
information. Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. For more
information on the symbol, refer to
the Index.
9:
Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
%:Audio Steering Wheel Controls
or OnStar®
$: Brake System Warning Light
":Charging System
I:Cruise Control
B: Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.: Fuel Gauge
+:Fuses
3: Headlamp High/Low-Beam
Changer
(: Heated Steering Wheel

Black plate (15,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
In Brief 1-15
Climate Controls
The heating, cooling, and ventilation for the vehicle can be controlled with
this system.
1. Driver and Passenger Displays
2. Fan
3. Power
4. AUTO (Automatic Operation)
5. PASS (Passenger ClimateControl)
6. Defrost
7. Air Delivery Mode 8. Temperature and Heated/
Ventilated Seat
9. Air Conditioning
10. Recirculation
11. Outside Air
12. Rear Window Defogger
See Dual Automatic Climate Control
System on page 8‑1.
Transmission
Automatic Transmission
Driver Shift Control (DSC) or Tap
Shift
Driver Shift Control (DSC) allows
shifting an automatic transmission
similar to a manual transmission.
DSC can be enabled through the
shift lever or the Tap Shift controls,
located on the back of the steering
wheel (if equipped). See Manual
Mode on page 9‑26.
Manual Transmission
Skip Shift (CTS‐V)
Under light acceleration, the
transmission will only allow shifting
from 1 (First) to 4 (Fourth). This
helps improve fuel mileage. Under
harder acceleration, Skip Shift is
disabled, and all gears are
available. See Manual Transmission
on page 9‑29.

Black plate (34,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
5-34 Instruments and Controls
CALIBRATION COMPLETE
This message displays when the
compass calibration is complete.
SeeCompass on page 5‑7 for more
information.
Cruise Control Messages
CRUISE SET TO XXX MPH
(KM/H)
This message displays whenever
the cruise control is set. See Cruise
Control on page 9‑39 for more
information.
Door Ajar Messages
DRIVER DOOR OPEN
This message displays when the
driver door is not closed completely.
Close the door completely.
HOOD OPEN
This message displays when the
hood is not closed completely. Make
sure that the hood is closed
completely.
LEFT REAR DOOR OPEN
This message displays when the
driver side rear door is not closed
completely. Make sure that the door
is closed completely.
PASSENGER DOOR OPEN
This message displays when the
passenger side front door is not
closed completely. Make sure that
the door is closed completely.
REAR ACCESS OPEN (Wagon)
This message displays when the
liftgate is not closed completely.
Make sure that the liftgate is closed
completely.
RIGHT REAR DOOR OPEN
This message displays when the
passenger side rear door is not
closed completely. Make sure that
the door is closed completely.
TRUNK OPEN (Sedan and
Coupe)
This message displays when the
trunk is not closed completely. Make
sure that the trunk is closed
completely.
Engine Cooling System
Messages
ENGINE HOT A/C (AIR
CONDITIONING) OFF
This message displays when the
engine coolant becomes hotter than
the normal operating temperature.
See Engine Coolant Temperature
Gauge on page 5‑16. To avoid
added strain on a hot engine, the air
conditioning compressor
automatically turns off. When the
coolant temperature returns to
normal, the air conditioning
compressor turns back on. You can
continue to drive the vehicle.

Black plate (43,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
Instruments and Controls 5-43
START ABORTED BY THEFT
DETERRENT
This message displays if there is a
communication problem between
the keyless access system and the
vehicle. The vehicle cannot be
started when this message displays.
See your dealer for service.
THEFT ATTEMPTED
This message displays if the
theft-deterrent system has detected
a break-in attempt while you were
away from the vehicle. SeeVehicle
Alarm System on page 2‑22 for
more information.
Service Vehicle Messages
SERVICE A/C SYSTEM
This message displays when the
electronic sensors that control the
air conditioning and heating
systems are no longer working.
Have the climate control system
serviced by your dealer if you notice
a drop in heating and air
conditioning efficiency.
SERVICE VEHICLE SOON
This message displays when a
non-emissions related malfunction
occurs. Have the vehicle serviced
by your dealer as soon as possible.
Tire Messages
SERVICE TIRE MONITOR
SYSTEM
This message displays if a part on
the Tire Pressure Monitor System
(TPMS) is not working properly. The
tire pressure light also flashes and
then remains on during the same
ignition cycle. See Tire Pressure
Light on page 5‑25. Several
conditions may cause this message
to appear. See Tire Pressure
Monitor Operation on page 10‑69 for
more information. If the warning
comes on and stays on, there may
be a problem with the TPMS. See
your dealer.
TIRE LEARNING ACTIVE
This message displays when the
Tire Pressure Monitor System
(TPMS) is re-learning the tire
positions on the vehicle. The tire
positions must be re-learned after
rotating the tires or after replacing a
tire or sensor. See Tire Rotation on
page 10‑72, Tire Pressure Monitor
System on page 10‑68, and Tire
Pressure on page 10‑66 for more
information.
TIRE LOW ADD AIR TO TIRE
On vehicles with the Tire Pressure
Monitor System (TPMS), this
message displays when the
pressure in one or more of the
vehicle’s tires is low. This message
also displays LEFT FRONT, RIGHT
FRONT, LEFT REAR, or RIGHT
REAR to indicate the location of the
low tire.
The low tire pressure warning light
will also come on. See Tire
Pressure Light on page 5‑25.

Black plate (1,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
Climate Controls 8-1
Climate Controls
Climate Control Systems
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 8-1
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . 8-6
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Climate Control Systems
Dual Automatic Climate Control System
The heating, cooling, and ventilation for the vehicle can be controlled with
this system.
1. Driver and Passenger Displays
2. Fan
3. Power
4. AUTO (Automatic Operation)
5. PASS (Passenger Climate
Control) 6. Defrost
7. Air Delivery Mode
8. Temperature and Heated/
Ventilated Seat
9. Air Conditioning
10. Recirculation

Black plate (2,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
8-2 Climate Controls
11. Outside Air
12. Rear Window Defogger
Automatic Operation
AUTO (Automatic):The system
automatically controls fan speed, air
delivery, and air conditioning in
order to heat or cool the vehicle to
the desired temperature. When the
indicator light is on, the system is in
full automatic operation. If the air
delivery mode or fan setting is
manually adjusted, the auto
indicator turns off and displays will
show the selected settings.
1. Press the AUTO button.
2. Adjust the temperature to a comfortable setting 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.
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.
English can be changed to metric
units through the Driver Information
Center (DIC). See Driver
Information Center (DIC) on
page 5‑27.
Q/R(Temperature Control): The
temperature can be adjusted
separately for the driver and the
passenger. Press to increase or
decrease the automatic temperature
settings. PASS (Passenger Climate
Control):
Press to set a different
temperature for the passenger.
Then adjust the passenger
temperature buttons to a
comfortable setting.
Pressing the PASS button again
automatically sets the passenger's
temperature to the driver's setting.
Turning the passenger's
temperature display off does not
shut the passenger's climate control
system off.
Manual Operation
O(Power): Press to turn the
climate control system on or off.
When the climate control system is
turned off the air inlet defaults to
outside air.
D C(Fan Control): Press the
buttons to increase or decrease the
fan speed. Pressing either button
cancels automatic fan control. Press
AUTO to return to automatic

Black plate (3,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
Climate Controls 8-3
operation. The blower may reduce
during an Onstar®session to limit
background noise.
If the airflow seems low when the
fan speed is at the highest setting,
the passenger compartment air filter
might need to be replaced. For more
information, see Passenger
Compartment Air Filter on page 8‑6.
H G(Air Delivery Mode Control):
Press the buttons to change the
direction of the airflow. The current
mode appears in the display screen.
Changing the mode cancels the
automatic air delivery. Press AUTO
to return to automatic operation.
The outboard air outlets always
receive some airflow in every mode,
except defrost.
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 outboard
outlets.
-(Defog): This mode clears the
windows of fog or moisture. Air is
directed to the windshield, floor, and
side window 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 defog mode, it is
cancelled after 10 minutes.
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. In this mode, the
system automatically turns off
recirculation and runs the air-conditioning compressor, unless
the outside temperature is at or
below freezing.
This mode can also cause the fan
speed and air temperature to
increase.
#(Air Conditioning):
Press to
turn the air conditioning system on
or off and override the automatic
system. When in AUTO, the air
conditioning compressor comes on
automatically, as needed.
The air conditioning system
removes moisture from the air, so
water might drip under the vehicle
while idling or after turning off the
engine. This is normal.
M(Recirculation): Press to turn
on recirculation. An indicator light
comes on. Air is recirculated inside
the vehicle. It helps to quickly cool
the air inside the vehicle or prevent
outside air and odors from entering.
Press the AUTO button to have the
system select the best air delivery
mode for the temperature setting.

Black plate (22,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
10-22 Vehicle Care
.Idles for long periods in traffic.
.Tows a trailer.
If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest
fan speed. Open the windows as
necessary.
3. In heavy traffic, let the engine idle in N (Neutral) while stopped.
If it is safe to do so, pull off the
road, shift to P (Park) or
N (Neutral) and let the
engine idle.
If the temperature overheat gauge is
no longer in the overheat zone or an
overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slow
for about 10 minutes. Keep a safe
vehicle distance from the car in front
of you. If the warning does not come
back on, continue to drive normally. If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down. Also, see
“Overheated
Engine Protection Operating Mode”
next in this section.
Overheated Engine
Protection
Operating Mode
This operating mode allows the
vehicle to be driven to a safe place
in an emergency. Should a hot
engine condition exist, an overheat
protection mode which alternates
firing groups of cylinders helps
prevent engine damage. In this
mode, there is a loss in power and
engine performance. Driving
extended distances and/or towing a
trailer in the overheat protection
mode should be avoided.
Power Steering Fluid
See Engine Compartment Overview
on page 10‑5 for the location of the
power steering fluid reservoir.
When to Check Power Steering
Fluid
It is not necessary to regularly
check power steering fluid unless
you suspect there is a leak in the
system or you hear an unusual
noise. A fluid loss in this system
could indicate a problem. Have the
system inspected and repaired.
How to Check Power Steering
Fluid
To check the power steering fluid:
1. Turn the key off and let the engine compartment cool down.