2022 CADILLAC CT4 climate control

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
134 LIGHTING
If the vehicle has remained parked for
an extended period of time with no
remote key use or keyless access
operation, approach detection will be
disabled. To reactivate, press any
button on the remote key or open and
close all vehicle doors to re-enable the
entry lighting feature on approach.
Exit Lighting
Some exterior lamps and interior
lamps turn on when the driver door is
opened after the ignition is turned off.
The interior lights turn on when the
ignition is turned off.
The exterior and interior lamps
remain on for a set amount of time,
then automatically turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
This feature can be changed. See
Vehicle Personalization0120.
Battery Load Management
The vehicle has Electric Power
Management (EPM), which 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 bring the charge back up.
When the state of charge is high, the
voltage is lowered slightly to prevent
overcharging. If the vehicle has a
voltmeter gauge or a 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 are on, such
as: headlamps, high beams, fog lamps,
rear window defogger, climate control
fan at high speed, heated seats, engine
cooling fans, 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 DIC
message might be displayed. If a
battery message is displayed, it is
recommended that the driver reduce
the electrical loads as much as
possible. See
Driver Information Center
(DIC) (Base Level) 0109 or
Driver Information Center (DIC)
(Uplevel) 0112.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
140 INFOTAINMENT SYSTEM
Wi-Fi Hotspot
Touch the Wi-Fi Hotspot icon to
display the Wi-Fi Hotspot information.
SeeSettings 0182.
Climate
Touch the Climate icon to display the
Climate main page. See Dual
Automatic Climate Control System
0 202.
Users
If equipped, touch the Users icon to
sign in or create a new user profile,
and follow the on-screen instructions.
Only four user profiles can be active at
one time in the vehicle. It may be
necessary to remove a profile from the
menu before creating or signing into
an existing profile. The removed
profile can be logged into at a
later time.
Settings
Touch the Settings icon to display the
Settings menu. See Settings0182.
Apple CarPlay
Touch the Apple CarPlay icon to
activate Apple CarPlay if equipped
after a supported device is connected.
See Apple CarPlay and Android Auto
0 180.
Android Auto
Touch the Android Auto icon to
activate Android Auto, if equipped,
after a supported device is connected.
See Apple CarPlay and Android Auto
0 180.
Apps
If equipped, in-vehicle apps are
available for download. Touch the
Apps icon on the Home Page to begin.
Downloading and using in-vehicle
apps requires Internet connectivity
which can be accessed with a data
plan through the vehicle’s built-in
4G LTE Wi-Fi hotspot, if equipped,
or a compatible mobile device hotspot.
On most mobile devices, activation of
the Wi-Fi hotspot is in the device’s
Settings menu under Mobile Network
Sharing, Personal Hotspot, Mobile
Hotspot, or similar. Availability of apps and connectivity
varies by vehicle, conditions, and
location. Data plan rates apply.
Features are subject to change. For
more information, see
www.my.cadillac.com/learn.
OnStar Services
If equipped, touch the OnStar Services
icon to display the OnStar Services
and Account pages. See
OnStar
Overview 0442.
Shortcut Tray
The shortcut menu is on the left side
of the display. It shows the Home
application and four other
applications.
Infotainment Display Features
Infotainment display features show on
the display when available. When a
feature is unavailable, it may gray out.
When a feature is touched, it may
highlight.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
INFOTAINMENT SYSTEM 187
.Bose AudioPilot Noise
Compensation Technology (If
Equipped): This feature adjusts the
volume based on the noise in the
vehicle and the speed.
Touch Off or On.
.Manage Favorites: Touch to display
a list of Audio, Mobile Devices, and
Navigation favorites.
Favorites can be moved, renamed,
or deleted.
To move, touch and hold the
favorite, and then drag up or down
to rearrange the position.
.Set Number of Audio Favorites:
Touch to select how many favorites
pages can be viewed from the audio
application. The Auto setting will
automatically adjust this number
based on the number of favorites
you have saved. Touch Auto, 5, 10,
15, 20, 25, 30, 35, or 40.
.RDS: This allows the Radio Data
System (RDS) to be turned on or off.
Touch the controls on the
infotainment display to disable or
enable.
.HD Radio: This allows HD Radio
reception to be turned on or off.
Touch the controls on the
infotainment display to disable or
enable.
.Explicit Content Filter: This setting
allows access to explicit content
SiriusXM channels.
Touch Off or On.
.Manage Phones: Select to connect
to a different phone source,
disconnect a phone, or delete a
phone.
.Reset Music Index: This allows the
music index to be reset if you are
having difficulty accessing all of the
media content on your device.
Touch Yes or No.
Climate
Touch and the following may display:
.Auto Fan Speed: This setting
specifies the amount of airflow
when the climate control fan setting
is Auto Fan.
Touch Low, Medium, or High.
.Air Quality Sensor: This setting
switches the system into
Recirculation Mode based on the
quality of the outside air.
Touch Off, Low Sensitivity, or High
Sensitivity.
.Auto Cooled Seats: This setting
automatically turns on and
regulates the ventilated seats when
the cabin temperature is warm.
Touch the controls on the
infotainment display to disable or
enable.
.Auto Heated Seats: This setting
automatically turns on and
regulates the heated seats when the
cabin temperature is cool. The auto
heated seats can be turned off by
using the heated seat controls on
the center stack.
Touch the controls on the
infotainment display to disable or
enable.
.Auto Defog: This setting
automatically turns the front
defogger on when the vehicle engine
is started.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
202 CLIMATE CONTROLS
Climate Controls
Climate Control Systems
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Climate Control Systems
Dual Automatic Climate Control System
The climate control buttons on the center stack and on the climate control
display are used to adjust the heating, cooling, and ventilation system.
Center Stack Climate Controls
1. ON/OFF (Power)
2. AUTO (Automatic Operation)
3. Air Delivery Mode Control
4. Driver Temperature Controls
5. Fan Control
6. Passenger Temperature Controls 7. A/C (Air Conditioning)
8. Recirculation
9. SYNC (Synchronized Temperature)
10. Defrost
11. Rear Window Defogger

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
CLIMATE CONTROLS 203
Climate Control Display
1. Driver and Passenger TemperatureDisplays
2. Fan Control
3. Driver and Passenger Temperature Controls
4. Sync (Synchronized Temperature)
5. Recirculation
6. Air Delivery Mode Control
7. Auto (Automatic Operation)
8. A/C (Air Conditioning)
9. On/Off (Power) The fan speed, air delivery mode, air
conditioning, driver and passenger
temperatures, recirculation, and Sync
settings can be controlled by touching
CLIMATE icon on the infotainment
Home Page or the climate button in
the application tray. A selection can
then be made on the front climate
control page displayed. See the
infotainment manual.
Climate Control Status Display
The climate control status display
appears briefly when the center stack
climate controls are adjusted.
Climate Control Influence on
Fuel Economy
The climate control system depends
on other vehicle systems for heat and
power input. Certain climate control
settings can lead to higher fuel usage.
The following climate control settings
use more fuel:
.MAX air conditioning mode
.Defrost mode
.Extreme temperature settings, such
as 15° C (60° F) or 32° C (90° F)
.High fan speed settings
To help reduce fuel usage:
.Use the full automatic control as
described under “Automatic
Operation.”
.Select a temperature setting that is
higher in hot weather and lower in
cold weather.
.Turn off the air conditioning when
it is not needed.
.Only use defrost to clear the
windows.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
204 CLIMATE CONTROLS
Automatic Operation
The system automatically controls the
following four functions to heat or
cool the vehicle to the desired
temperature:
.Fan Speed
.Air Delivery Mode
.Air Conditioning
.Recirculation
When the AUTO indicator light is lit,
all four functions are operating
automatically. Each function can be
manually set and the selected setting
will be shown. This cancels full
automatic operation and the AUTO
indicator light turns off. Functions
that are not manually set will
continue to be automatically
controlled, although the AUTO
indicator light will not be lit.
To place the system in
automatic mode: 1. Press AUTO.
2. Set the driver and passenger temperature. To find your comfort setting, start
with 22 °C (72 °F) and allow the
system time to stabilize. Then
adjust the temperature as needed
for best comfort.
To improve fuel efficiency and to cool
the vehicle faster, recirculation may be
automatically selected in warm
weather.
The recirculation light will not come
on when automatically controlled.
Press
@to manually select
recirculation; press it again to select
outside air.
Do not cover the solar sensor on the
top of the instrument panel near the
windshield. This sensor regulates air
temperature based on sun load. See
“Sensors ”later in this section.
Manual Operation
On/Off : Press to turn the climate
control system on or off. When the
system is off, outside air will be
prevented from entering the vehicle.
When the system is on or a button is
pressed, the climate control system
will turn on and deliver airf low per
the current setting.
9: Press button up or down to
increase or decrease the fan speed.
Press AUTO to return to automatic
operation.
Driver and Passenger Temperature
Control : The temperature can be
adjusted separately for the driver and
passenger.
Press button up or down to increase
or decrease the driver or passenger
temperature setting.
The driver side or passenger side
temperature display shows the
temperature setting increasing or
decreasing.
SYNC : Press to link the passenger
and rear climate temperature settings,
if equipped, to the driver setting. The
SYNC indicator light will turn on.
When the passenger or rear climate
temperature settings are adjusted, the
SYNC indicator light is off.
Air Delivery Mode Control : Press
Y,
[, orzto change the direction of
the airf low. An indicator light comes

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
CLIMATE CONTROLS 205
on in the selected mode button.
Multiple buttons can be selected
simultaneously.
Changing the mode cancels the
automatic operation and the system
goes into manual mode. Press AUTO
to return to automatic operation.
z:This mode clears the windows of
fog or moisture. Air is directed to the
windshield and side window vents.
The system automatically forces
outside air into the vehicle and the air
conditioning compressor will run,
unless the outside temperature is
close to freezing.
Y: Air is directed to the instrument
panel outlets.
[: Air is directed to the floor
outlets, with some to the windshield,
side window outlets, outboard panel
outlets, and second row floor outlets.
0: Press to clear the windshield of
fog or frost more quickly. Air is
directed to the windshield and the
side window outlets. The air conditioning compressor also comes
on, unless the outside temperature is
below freezing.
Do not drive the vehicle until all
windows are clear.
See
Air Vents 0207.
A/C : Press to turn the air
conditioning system on or off. An
indicator light comes on to show that
the air conditioning is enabled. If the
fan is turned off, the air conditioner
will not run. The A/C light will stay on
even if the outside temperatures are
below freezing.
@: Press to turn on recirculation.
An indicator light comes on. Air is
recirculated to quickly cool the inside
of the vehicle. It can also be used to
help reduce outside air and odors that
enter the vehicle. The air conditioning
compressor also comes on when this
mode is activated.
Rear Window Defogger
The rear window defogger uses a
warming grid to remove fog from the
rear window.
K: Press to turn the rear window
defogger on or off. An indicator light
on the button comes on to show that
the rear window defogger is on.
The rear window defogger only works
when the ignition is on. The defogger
turns off if the ignition is turned to
off or ACC/ACCESSORY.
Caution
Using a razor blade or sharp object
to clear the inside rear window can
damage the rear window defogger.
Repairs would not be covered by
the vehicle warranty. Do not clear
the inside rear window with sharp
objects.
Heated Mirror : If equipped with
heated outside mirrors, the mirrors
heat to help clear fog or frost from the
surface of the mirror when the rear
window defog button is pressed. See
Heated Mirrors 025.
Remote Start Climate Control
Operation : If equipped with remote
start, the climate control system may
run when the vehicle is started
remotely. The rear defog may come on

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
206 CLIMATE CONTROLS
during remote start based on cold
ambient conditions. The rear defog
indicator light does not come on
during a remote start.
If equipped, the heated seats will turn
on if it is cold outside or the
ventilated seats will turn on if it is hot
outside. The heated and ventilated
seat indicator lights may not come on
during a remote start. If equipped, the
heated steering wheel will come on in
a remote start if it is cold outside. The
heated steering wheel indicator light
may not come on.
Ionizer :If equipped with an ionizer,
this feature helps to clean the air
inside the vehicle and remove
contaminants such as pollen, odors,
and dust. If the climate control
system is on and the ionizer is
enabled, the ionizer status indicator
will be lit on the climate control
display. To turn the ionizer on or off,
see Climate and Air Quality under
Vehicle Personalization 0120.Sensors
The solar sensor, located in the
defrost grille in the middle of the
instrument panel, monitors the solar
heat. Do not cover the solar sensor or
the system will not work properly.
There is also an exterior temperature
sensor 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. The climate control system uses the
information from these sensors to
maintain comfort settings by
adjusting the outlet temperature, fan
speed, and 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.
Afterblow Feature
If equipped, under certain conditions,
the fan may stay on or may turn on
and off several times after you turn
off and lock the vehicle. This is
normal.