2023 CADILLAC CT4 climate control

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . .1
Keys, Doors, and Windows . . . . .8
Seats and Restraints . . . . . . . . . .36
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Instruments and Controls . . . . .97
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . .145
Infotainment System . . . . . . . . . .154
Climate Controls . . . . . . . . . . . . . . .225
Driving and Operating . . . . . . . .232
Vehicle Care . . . . . . . . . . . . . . . . . . . .368
Service and Maintenance . . .467
Technical Data . . . . . . . . . . . . . . . . .478
Customer Information . . . . . . .483
Reporting Safety Defects . . .495
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . .499
Connected Services . . . . . . . . . .506
Index . . . . . . . . . . . . . . . . . . . . . . . 509
Introduction
California Proposition 65 Warning
Litho in U.S.A.
Part No. 84946627 A First Printing©2022 General Motors LLC. All Rights Reserved.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
6 Introduction
1. Air Vents0230.
2. Exterior Lamp Controls 0145.
Turn Signal Lever. See
Turn and Lane-Change
Signals 0149.
3. Tap Shift Controls (If Equipped). See Manual
Mode (Electronic Shifter)
0281 or
Manual Mode (Mechanical
Shifter) 0280.
4. Cruise Control 0301.
Adaptive Cruise Control
(Advanced) 0304 (If
Equipped).
Forward Collision Alert
(FCA) System 0342 (If
Equipped).
Heated Steering Wheel
0 98 (If Equipped).
5. Instrument Cluster (Base Level) 0106 or
Instrument Cluster
(Uplevel) 0108. Driver Information Center
(DIC) Display. See Driver
Information Center (DIC)
(Base Level)
0129 or
Driver Information Center
(DIC) (Uplevel) 0132.
6. Steering Wheel Controls 0158 (If Equipped).
7. Windshield Wiper/Washer 099.
8. Infotainment. See Overview 0155.
9. Light Sensor. See Automatic Headlamp
System 0148.
10. Hazard Warning Flashers 0149.
11. Dual Automatic Climate Control System 0225.
12. Heated and Ventilated Front Seats 045 (If
Equipped).
13. Lane Keep Assist (LKA) 0351 (If Equipped). 14. Traction Control/
Electronic Stability Control
0290.
Stop/Start Disable Switch.
See Stop/Start System
0 264.
Automatic Vehicle Hold
(AVH) 0289.
MODE Button or
«/ª
Button (V-Series Only). See
Driver Mode Control 0292.
15. Wireless Charging Pad (If Equipped) (Out of View).
See Wireless Charging
0102.
16. Park Assist Button. See Assistance Systems for
Parking or Backing 0335.
17. Shift Lever. See Automatic Transmission (Mechanical
Shifter) 0272 or
Automatic Transmission
(Electronic Shifter) 0275.
See Manual Transmission
0 283.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
16 Keys, Doors, and Windows
2. Use the mechanical keyblade in the slot to remove
the battery cover by hand.
3. Remove the seal by pullingon the tab to access the
battery.
4. Remove the old battery. Do not use a metal object.
5. Insert the new battery, positive side toward the
back cover. Replace with a
CR2450 or equivalent
battery.
6. Place the seal back into the groove around the
battery compartment.
7. Reassemble the battery cover by snapping it back
on the remote key.
8. Reinsert the mechanical key.
Remote Vehicle Start
This feature allows the engine
to be started from outside the
vehicle. It is not available on
vehicles with a manual
transmission.
S:This button on the remote
key is for remote start. The climate control system will
use the previous settings
during a remote start. The
rear window defogger may
come on during remote start
based on cold ambient
conditions. The rear defog
indicator light does not come
on during remote start.
If equipped, the heated and
ventilated front seats may
also come on when the vehicle
personalization setting is
enabled. See Heated and
Ventilated Front Seats
045.
If equipped with a remote
start heated steering wheel, it
may come on during a remote
start. See Heated Steering
Wheel 098.
Laws in some local
communities may restrict the
use of remote starters. For
example, some laws may
require a person using remote
start to have the vehicle in
view. Check local regulations
for any requirements.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Keys, Doors, and Windows 23
Warning (Continued)
.Adjust the climate control
system to a setting that
brings in only outside air
and set the fan speed to
the highest setting. See
“Climate Control Systems”
in the Index.
.If the vehicle is equipped
with a power liftgate,
disable the power liftgate
function.
See Engine Exhaust 0271.
Manual Trunk
To release the trunk, the
vehicle must be off or the shift
lever must be in P (Park).
.Press|on the driver door.
.PressXtwice quickly on the
remote key.
.Press the touch pad on the
rear of the trunk above the
license plate when all doors
are unlocked.
The trunk can be opened while
the vehicle is locked by
pressing the touch pad above
the license plate while the
remote key is within 1 m (3 ft)
of the rear of the vehicle. See
Remote Key Operation 09.
Close the trunk by pulling on
the handle. Do not use the
handle as a tie-down. Do not
press the touch pad while

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
30 Keys, Doors, and Windows
not be automatically unfolded
by the Remote Mirror Folding
feature.
If equipped with power folding
mirrors, and the mirrors have
not been folded with the
power folding mirror switch
and the vehicle is in P (Park),
they may be automatically
folded/unfolded as follows:1. If doors are locked by pressing
Hon the remote
key, the mirrors will fold.
If doors are unlocked by
pressing
Ion the remote
key, the mirrors will unfold.
See Remote Key Operation
0 9.
2. If doors are locked by pressing the door handle
button, the mirrors will
fold. If doors are unlocked
by pressing the door
handle button, the mirrors
will unfold. See “Keyless
Unlocking/Locking from
the Driver Door” in Remote
Key Operation 09. 3. If passive locking is
enabled and doors are
locked by that feature, the
mirrors will fold. See
“Passive Locking” in
Remote Key Operation 09.
Heated Mirrors
K:The rear window defogger
also heats the outside mirrors.
See Dual Automatic Climate
Control System 0225.
Automatic Dimming
Mirror
If the vehicle has the
automatic dimming mirror, the
driver outside mirror
automatically adjusts for the
glare of headlamps
behind you.
Do not spray glass cleaner or
chrome cleaner directly onto
the mirror. Only use a soft
towel dampened with water.
Reverse Tilt Mirrors
If equipped with reverse tilt
mirrors and memory seats, the
passenger and/or driver
mirror tilts to a preselected
position when the vehicle is in
R (Reverse). This allows the
curb to be seen when parallel
parking.
The mirror(s) may move from
their tilted position when:
.The vehicle is shifted out of
R (Reverse), or remains in
R (Reverse) for about
30 seconds.
.The vehicle is turned off.
.The vehicle is driven in
R (Reverse) above a set
speed.
To view available settings
from the infotainment screen,
touch Settings > Vehicle >
Comfort and Convenience.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Seats and Restraints 45
If manual transmission
equipped, Seat Exit Memory
will continue if the parking
brake is released prior to
reaching the save memory
position.
Seat Exit Memory is not linked
to the driver’s remote key. The
seating position saved to
Bis
used for all drivers.
Cancel Memory Seating
Recalls
.During any memory recall:
Press a power seat control
Press SET memory button
.During Manual memory
recall:
Release 1, 2, or
Bmemory
button
.During Auto Seat Entry
Memory Recall:
Turn vehicle off
Press SET, 1, 2, or
B
memory buttons
.During Auto Seat Exit
Memory Recall: Press SET, 1, 2, or
B
memory buttons
Obstructions
If something has blocked the
seat while recalling a memory
position, the recall may stop.
Remove the obstruction and
try the recall again. If the
memory position still does not
recall, see your dealer.
Heated and
Ventilated Front
Seats
{Warning
If temperature change or
pain to the skin cannot be
felt, the seat heater may
cause burns. To reduce the
risk of burns, use care when
using the seat heater,
especially for long periods of
time. Do not place anything
on the seat that insulates
against heat, such as a (Continued)
Warning (Continued)
blanket, cushion, cover,
or similar item. This may
cause the seat heater to
overheat. An overheated
seat heater may cause a
burn or may damage
the seat.
If equipped, the buttons are
near the climate controls on
the center stack. To operate,
the engine must be running.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
102 Instruments and Controls
Retained Accessory Power
(RAP) is turned off and then
back on. See Retained
Accessory Power (RAP)0267.
Wait one minute to allow the
circuit breaker to reset before
reconnecting devices or
turning RAP back on. If the
problem continues, the issue
could be within your device.
Try another known good
device to make sure the circuit
breaker is operating properly.
If this does not resolve your
problem, see your dealer.
Caution
Failure to replace the circuit
breaker with the minifuse
could overheat the cigar
lighter and damage the
vehicle.
When adding electrical
equipment, be sure to follow
the proper installation
instructions included with the
equipment. See Add-On
Electrical Equipment 0366.
Caution
Hanging heavy equipment
from the power outlet can
cause damage not covered
by the vehicle warranty. The
power outlets are designed
for accessory power plugs
only, such as cell phone
charge cords.
Always unplug electrical
equipment when not in use
and do not plug in equipment
that exceeds the maximum
15 amps rating.
Wireless Charging
If equipped and enabled, the
vehicle has wireless charging
in the bin below the climate
control system. The system
operates at 145 kHz and
wirelessly charges one Qi
compatible smartphone. The
power output of the system is
capable of charging at a rate
up to 3 amp (15 W), as requested by the compatible
smartphone. See Radio
Frequency Statement
0494.
{Warning
Wireless charging may
affect the operation of an
implanted pacemaker or
other medical devices. If you
have one, it is recommended
to consult with your doctor
before using the wireless
charging system.
The vehicle must be on, in
accessory mode, or Retained
Accessory Power (RAP) must
be active. The wireless
charging feature may not
correctly indicate charging
when the vehicle is in RAP,
during a Bluetooth phone call,
or when phone projection (e.g.
Apple CarPlay / Android Auto)
is active. See Retained
Accessory Power (RAP) 0267.
The operating temperature is
−40 °C (−40 °F) to 85 °C
(185 °F) for the charging

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
152 Lighting
The exterior and interior lamps
remain on for a set amount of
time, then automatically
turn off.
The interior lights turn on
when the vehicle is turned off.
The exterior lamps turn off
immediately by turning the
exterior lamp control off.
This feature can be changed.
On the infotainment home
screen, select the Settings
icon
TVehicleTExit Lighting.
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 thestate 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)
0129 or
Driver Information Center
(DIC) (Uplevel) 0132.