2023 CADILLAC CT4 light

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
Introduction 3
Danger, Warning, and
Caution
Warning messages found on
vehicle labels and in this
manual describe hazards and
what to do to avoid or
reduce them.
{Danger
Danger indicates a hazard
with a high level of risk
which will result in serious
injury or death.
{Warning
Warning indicates a hazard
that could result in injury or
death.
Caution
Caution indicates a hazard
that could result in property
or vehicle damage.
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: Shown when the owner’s
manual has additional
instructions or information.
*: Shown when the service
manual has additional
instructions or information.
0: Shown when there is more
information on another page —
“see page.”
Vehicle Symbol Chart
Here are some additional
symbols that may be found on
the vehicle and what they
mean. See the features in this
manual for information.
u: Air Conditioning System
G:Air Conditioning
Refrigerant Oil
9: Airbag Readiness Light
!:Antilock Brake
System (ABS)
$: Brake System Warning
Light
9: Dispose of Used
Components Properly
P: Do Not Apply High
Pressure Water
B: Engine Coolant
Temperature
_: Flame/Fire Prohibited

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
Introduction 7
18. ENGINE START/STOPButton. See Ignition
Positions 0261.
19. Horn 099.
20. Steering Wheel Adjustment 098.
21. Head-Up Display (HUD) 0136 (If Equipped).
22. Hood Release (Out of View). See Hood 0371.
23. Instrument Panel Illumination Control 0150.
24. Data Link Connector (DLC) (Out of View). See
Malfunction Indicator
Lamp (Check Engine Light)
0118.
25. Electric Parking Brake 0287 (If Equipped).

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
10 Keys, Doors, and Windows
Other conditions can impact
the performance of the
remote key. See Remote Key
09.
Q:Press to lock all doors and
the fuel door, if equipped. The
turn signal indicators may
flash and/or the horn may
sound on the second press to
indicate locking. To view
available settings for this
feature, touch the Settings
icon on the infotainment home
page. Select “Vehicle”to
display the list of available
options and select “Remote
Lock, Unlock, Start”. Pressing
Qmay also arm the
alarm system. See Vehicle
Alarm System 024.
If equipped with remote
folding mirrors, double
pressing and holding
Qon the
remote key may fold the
mirrors. See Folding Mirrors
0 29.
K:Press to unlock the driver
door and the fuel door,
if equipped. Press again within
five seconds to unlock all
doors. The remote key can be
programmed to unlock all
doors on the first button
press. To view available
settings for this feature, touch
the Settings icon on the
infotainment home page.
Select “Vehicle” to display the
list of available options and
select “Remote Lock, Unlock,
Start”. When remotely
unlocking the vehicle at night,
the headlamps and back-up
lamps may come on for about
30 seconds to light your approach to the vehicle. The
turn signal indicators may
flash to indicate unlocking.
Pressing
Kwill disarm the
alarm system. See Vehicle
Alarm System 024.
Double press and hold
Kfor
about three seconds to
remotely open the windows,
if enabled. To view available
settings for this feature, touch
the Settings icon on the
infotainment home page.
Select “Vehicle” to display the
list of available options and
select “Remote Lock, Unlock,
Start”.
If equipped with remote
folding mirror, double pressing
and holding
Kon the remote
key may unfold the mirrors.
See Folding Mirrors 029.
S:PressStwice to start the
engine from outside the
vehicle using the remote key.
See Remote Vehicle Start 016.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
14 Keys, Doors, and Windows
Mechanical Key Access
To access a vehicle with a
weak remote key battery, see
Door Locks018.
Programming Remote
Keys to the Vehicle
Only remote keys programmed
to the vehicle will work. If a
remote key is lost or stolen, a
replacement can be purchased
and programmed through your
dealer. The vehicle can be
reprogrammed so that lost or
stolen remote keys no longer
work. Each vehicle can have
up to eight remote keys
matched to it.
Starting the Vehicle with a
Low Remote Key Battery
For improved vehicle security,
the remote key is equipped
with a motion sensor. When
starting the vehicle, if the
remote key has been idle for a
while, the DIC may display KEY
IN SLEEP MODE, MOVE KEY,
THEN START. Move the remote key slightly and try
starting the vehicle. When
starting the vehicle, if the
remote key battery is depleted
or there is signal interference,
the DIC may display NO KEY
FOUND, REPLACE BATTERY
IN KEY or NO REMOTE KEY
WAS DETECTED PLACE KEY
IN KEY POCKET THEN START
YOUR VEHICLE, follow the
steps shown below:
1. Place the remote key into
the rear cupholder. 2. With the vehicle in P (Park)
or N (Neutral) press the
brake pedal and ENGINE
START/STOP.
Replace the remote key
battery as soon as
possible.
Battery Replacement
{Warning
Never allow children to play
with the remote key. The
remote key contains a small
battery, which can be a
choking hazard. If swallowed,
internal burns can occur,
resulting in severe injury or
death. Seek medical
attention immediately if a
battery is swallowed.
{Warning
To avoid personal injury, do
not touch metal surfaces on
the remote key when it has
been exposed to extreme
(Continued)

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
20 Keys, Doors, and Windows
3. Slide the cap forward andpress the forward edge to
install the cap in place.
4. Release the door handle. 5. Check that the cap is
secure.
Free-Turning Locks
The door key lock cylinder
turns freely when either the
wrong key is used, or the
correct key is not fully
inserted. The free-turning
door lock feature prevents the
lock cylinder from being forced
open. To reset the lock
cylinder, ensure the correct
key is fully inserted into the
lock cylinder. Rotate the key
until you feel the lock cylinder
click back into place. Remove
the key and reinsert fully,
rotate the key to unlock the
vehicle.
Power Door Locks
Q: Press to lock the doors.
The indicator light in the
switch will illuminate when
locked.
K: Press to unlock the doors.
If equipped, the fuel door is
also locked or unlocked using
these features.
Delayed Locking
This feature delays the actual
locking of the doors until
five seconds after all doors
are closed.