horn CADILLAC CT4 2021 Owner's Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INTRODUCTION 5
1.Air Vents 0200.
2. Exterior Lamp Controls 0126.
Turn Signal Lever. See Turn and
Lane-Change Signals 0129.
3. Tap Shift Controls (If Equipped). See Manual Mode (Electronic Shifter)
0 235 or
Manual Mode (Mechanical Shifter)
0 234.
4. Cruise Control 0248.
Adaptive Cruise Control (Advanced)
0 251 (If Equipped).
Forward Collision Alert (FCA) System
0 283 (If Equipped).
Heated Steering Wheel 082 (If
Equipped).
5. Instrument Cluster (Base Level) 088
or
Instrument Cluster (Uplevel) 090.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) (Base Level) 0107 or
Driver Information Center (DIC)
(Uplevel) 0110.
6. Steering Wheel Controls 0137 (If
Equipped).
7. Windshield Wiper/Washer 082. 8. Infotainment. See
Overview0135.
9. Light Sensor. See Automatic
Headlamp System 0128.
10. Hazard Warning Flashers 0129.
11. Dual Automatic Climate Control
System 0196.
12. Heated and Ventilated Front Seats
037 (If Equipped).
13. Lane Keep Assist (LKA) 0291 (If
Equipped).
14. Traction Control/Electronic Stability
Control 0239.
Stop/Start Disable Switch. See Stop/
Start System 0221.
Automatic Vehicle Hold (AVH) 0239.
MODE Button or
«/ªButton
(V-Series Only). See Driver Mode
Control 0241.
15. Wireless Charging Pad (If Equipped) (Out of View). See
Wireless Charging 085.
16. Park Assist Button. See Assistance
Systems for Parking or Backing
0 277. 17. Shift Lever. See
Automatic
Transmission (Mechanical Shifter)
0 227 or
Automatic Transmission (Electronic
Shifter) 0229.
18. ENGINE START/STOP Button. See Ignition Positions 0219.
19. Horn 082.
20. Steering Wheel Adjustment 082.
21. Head-Up Display (HUD) 0112 (If
Equipped).
22. Hood Release (Out of View). See Hood 0307.
23. Instrument Panel Illumination
Control 0130.
24. Data Link Connector (DLC) (Out of View). See Malfunction Indicator
Lamp (Check Engine Light) 097.
25. Electric Parking Brake 0237 (If
Equipped).

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
8 KEYS, DOORS, AND WINDOWS
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. See Vehicle
Personalization 0117.
Pressing
Qmay also arm the alarm
system. See Vehicle Alarm System 020.
If equipped with remote folding
mirrors, pressing
Qon the remote key
may fold the mirrors. See Folding
Mirrors 024.
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. See
Vehicle
Personalization 0117. 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 020.
Press and hold
Kfor about
three seconds to remotely open the
windows, if enabled. See Vehicle
Personalization 0117.
If equipped with remote folding
mirror, pressing
Kon the remote key
may unfold the mirrors. See Folding
Mirrors 024.
S:PressStwice to start the engine
from outside the vehicle using the
remote key. See Remote Vehicle Start
0 13.
7:Press and release one time to
initiate vehicle locator. The exterior
lamps flash and the horn chirps three
times. Press and hold
7for more than three seconds to sound the panic
alarm. The horn sounds and the turn
signal lamps flash for 30 seconds,
or until
7is pressed again or the
vehicle is started.
X: Press twice to release the trunk.
Keyless Access Operation
The Keyless Access system lets you
lock and unlock the doors and access
the trunk without removing the
remote key from your pocket, purse,
briefcase, etc. The remote key must be
within 1 m (3 ft) of the trunk or door
being opened. The button is on the
outside door handle.
The Keyless Access system can be
programmed to be turned off or to
unlock all doors on the first door
handle press from the driver door.
Keyless unlocking can also be turned
off. See Vehicle Personalization 0117.
If equipped with memory seats,
remote keys 1 and 2 are linked to
seating positions of memory 1 or 2.
See Memory Seats 034.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
10 KEYS, DOORS, AND WINDOWS
Enabling Keyless Unlocking:
With the vehicle off, press and hold
Q
andKon the remote key at the same
time for approximately four seconds.
The turn signal lamps will flash twice
quickly to indicate access is enabled.
Enabling Keyless Unlocking may also
be configured under Vehicle
Personalization. See Vehicle
Personalization 0117.
Passive (Walkaway) Locking
The Keyless Access system will lock
the vehicle several seconds after all
doors are closed if the vehicle is off
and at least one remote key has been
removed or none remain in the
vehicle.
If equipped, the fuel door will
also lock.
If other electronic devices interfere
with the remote key signal, the vehicle
may not detect the remote key inside
the vehicle. If passive (walkaway)
locking is enabled, the doors may lock
with the remote key inside the vehicle.
Do not leave the remote key in an
unattended vehicle. To customize the doors to
automatically lock when exiting the
vehicle, see
Vehicle Personalization
0 117.
If equipped with remote folding
mirror, passive (walkaway) locking
may fold the mirrors. See Folding
Mirrors 024.
Temporary Disable of Passive
(Walkaway) Locking
Temporarily disable passive locking by
pressing and holding
Kon the
interior door switch with a door open
for at least four seconds, or until three
chimes are heard. Passive (walkaway)
locking will then remain disabled until
the vehicle is turned on.
Remote Key Left In Vehicle Alert
When the vehicle is turned off and a
remote key is left in the vehicle, the
horn will chirp three times after all
doors are closed. To turn on or off see
Vehicle Personalization 0117. Remote Key No Longer In Vehicle
Alert
If the vehicle is on, with a door open,
and then all doors are closed, the
vehicle will check for a remote key
inside. If a remote key is not detected,
the Driver Information Center (DIC)
will display NO KEY FOUND and the
horn will chirp three times.
This occurs only once each time the
vehicle is driven. See
Vehicle
Personalization 0117.
Keyless Trunk Opening
Press the touch pad on the rear of the
trunk above the license plate if the
remote key is within 1 m (3 ft).
Mechanical Key Access
To access a vehicle with a weak
remote key battery, see Door Locks
0 15.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
18 KEYS, DOORS, AND WINDOWS
To unlock the doors:
.PressKon the power door lock
switch.
.Shift the transmission into P (Park).
Automatic door locking cannot be
disabled. Automatic door unlocking
can be programmed. See Vehicle
Personalization 0117.
Lockout Protection
If the vehicle is on or in ACC/
ACCESSORY and the power door lock
switch is pressed with the driver door
open, all the doors will lock and only
the driver door will unlock.
If the vehicle is off and locking is
requested while a door is open, when
all doors are closed the vehicle will
check for keys inside. If any remote
key programmed to the vehicle is
detected and the number of keys
inside has not reduced, the driver door
will unlock and the horn will chirp
three times.
Lockout Protection can be manually
overridden with the driver door open
by pressing and holding
Qon the
power door lock switch.
Safety Locks
With Folding Mirrors
Without Folding Mirrors The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.
Press
{
vto activate the safety locks
on the rear doors. The indicator light
in the switch will illuminate when
activated.
The rear door power windows are also
disabled. See Power Windows 026.
Press
{ vagain to deactivate the
safety locks.
If an inside rear door handle is being
pulled at the same time the safety
lock is deactivated, only that door will
remain locked and the indicator light
may flash. Release the handle, then
press the safety lock twice to
deactivate the safety locks.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
KEYS, DOORS, AND WINDOWS 21
The indicator light, on the instrument
panel near the windshield, indicates
the status of the system.
Off :Alarm system is disarmed.
On Solid : Vehicle is secured during
the delay to arm the system.
Fast Flash : Vehicle is unsecured.
A door, the hood, or the trunk is open.
Slow Flash : Alarm system is armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle in one of
three ways:
.Use the remote key.
.Use the Keyless Access system.
.With a door open, pressQon
the interior of the door.
3. After 30 seconds the alarm system will arm, and the indicator light
will begin to slowly flash indicating
the alarm system is operating.
Pressing
Qon the remote key a
second time will bypass the
30-second delay and immediately
arm the alarm system.
The vehicle alarm system will not arm
if the doors are locked with the
mechanical key.
If the driver door is opened without
first unlocking with the remote key,
the horn will chirp and the lights will
flash to indicate pre-alarm. If the
vehicle is not started, or the door is
not unlocked by pressing
Kon the
remote key during the 10-second
pre-alarm, the alarm will be activated.
The alarm will also be activated if a
passenger door, the trunk, or the hood
is opened without first disarming the
system. When the alarm is activated,
the turn signals flash and the horn sounds for about 30 seconds. The
alarm system will then re-arm to
monitor the next unauthorized event.
Disarming the Alarm System
To disarm the alarm system or turn
off the alarm if it has been activated:
.PressKon the remote key.
.Unlock the vehicle using the Keyless
Access system.
.Start the vehicle.
To avoid setting off the alarm by
accident:
.Lock the vehicle after all occupants
have left the vehicle and all doors
are closed.
.Always unlock a door with the
remote key or use the Keyless
Access system.
Unlatching the driver door with the
mechanical key will not disarm the
system or turn off the alarm.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
22 KEYS, DOORS, AND WINDOWS
How to Detect a Tamper
Condition
IfKis pressed on the remote key and
the horn chirps and the lights flash
three times, a previous alarm occurred
while the system was armed.
If the alarm has been activated, a
message will appear on the DIC.
Power Sounder, Inclination
Sensor, and Intrusion Sensor
In addition to the standard
theft-deterrent system features, this
system may also have a power
sounder, inclination sensor, and
intrusion sensor.
The power sounder provides an
audible alarm which is distinct from
the vehicle’s horn. It has its own
power source, and can sound an alarm
if the vehicle’s battery is
compromised.
The inclination sensor can set off the
alarm if it senses movement of the
vehicle, such as when a tire is
removed. Make sure the vehicle's
alarm is not armed prior to any
jacking. The intrusion sensor monitors the
vehicle interior, and can activate the
alarm if it senses unauthorized entry
into the vehicle's interior. Do not allow
passengers or pets to remain in the
vehicle when the intrusion sensor is
activated.
Before arming the theft-deterrent
system and activating the intrusion
sensor:
.Make sure all doors and windows
are completely closed.
.Secure any loose items such as sun
glasses.
.Make sure there are no obstructions
blocking the sensors in the front
overhead console.
Inclination and Intrusion Sensor
Disable SwitchIt is recommended that the intrusion
and inclination sensor be deactivated
if pets are left in the vehicle or the
vehicle is being transported. With the
vehicle turned off, press
oin the
front overhead console. The indicator
light will come on momentarily,
indicating that these sensors have
been disabled for the next alarm
system arming cycle.
Immobilizer
See Radio Frequency Statement 0409.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
INSTRUMENTS AND CONTROLS 81
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . . . . 82
Steering Wheel Controls . . . . . . . . . . 82
Heated Steering Wheel . . . . . . . . . . . . 82
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Windshield Wiper/Washer . . . . . . . . 82
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Power Outlets . . . . . . . . . . . . . . . . . . . . . . 85
Wireless Charging . . . . . . . . . . . . . . . . . 85
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . 87
Instrument Cluster (Base Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Instrument Cluster (Uplevel) . . . . . 90
Speedometer . . . . . . . . . . . . . . . . . . . . . . . 93
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Trip Odometer . . . . . . . . . . . . . . . . . . . . . 93
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . 93
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . . 94
Engine Coolant Temperature
Gauge (Base Level) . . . . . . . . . . . . . . . 94 Engine Coolant Temperature
Gauge (Uplevel) . . . . . . . . . . . . . . . . . . 95
Seat Belt Reminders . . . . . . . . . . . . . . . 95
Airbag Readiness Light . . . . . . . . . . . . 96
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Charging System Light . . . . . . . . . . . . 97
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . . 97
Brake System Warning Light . . . . . 99
Electric Parking Brake Light . . . . . 100
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . 100
Performance Shifting Light . . . . . . 101
Automatic Vehicle Hold (AVH) Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Lane Keep Assist (LKA) Light . . . 101
Automatic Emergency Braking (AEB) Disabled Light . . . . . . . . . . . 101
Vehicle Ahead Indicator . . . . . . . . . 102
Pedestrian Ahead Indicator . . . . . . 102
Traction Off Light . . . . . . . . . . . . . . . . 102
StabiliTrak OFF Light . . . . . . . . . . . . 102
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . 103
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . 103
Driver Mode Control Light . . . . . . . 103 Tire Pressure Light . . . . . . . . . . . . . . . 104
Engine Oil Pressure Light . . . . . . . . 104
Low Fuel Warning Light . . . . . . . . . 105
Security Light . . . . . . . . . . . . . . . . . . . . . 105
High-Beam On Light . . . . . . . . . . . . . 105
Lamps On Reminder . . . . . . . . . . . . . 106
Cruise Control Light (Base
Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Cruise Control Light (Uplevel) . . . 106
Door Ajar Light . . . . . . . . . . . . . . . . . . . 107
Information Displays
Driver Information Center (DIC) (Base Level) . . . . . . . . . . . . . . . . . . . . . 107
Driver Information Center (DIC) (Uplevel) . . . . . . . . . . . . . . . . . . . . . . . . . 110
Head-Up Display (HUD) . . . . . . . . . 112
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . 116
Engine Power Messages . . . . . . . . . . 117
Vehicle Speed Messages . . . . . . . . . 117
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . 117
Universal Remote System
Universal Remote System . . . . . . . . 122
Universal Remote System
Programming . . . . . . . . . . . . . . . . . . . 122
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . . . . . . 124

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
82 INSTRUMENTS AND CONTROLS
Controls
Steering Wheel Adjustment
To adjust the steering wheel:1. Pull the lever down.
2. Move the steering wheel up or down.
3. Pull or push the steering wheel closer or away from you.
4. Pull the lever up to lock the steering wheel in place.
Do not adjust the steering wheel while
driving.
Steering Wheel Controls
The infotainment system can be
operated by using the steering wheel
controls. See Steering Wheel Controls
0 137.
Heated Steering Wheel
(:If equipped, press to turn the
heated steering wheel on or off. An
indicator light next to the button
displays when the feature is
turned on.
The steering wheel takes about
three minutes to be fully heated. Automatic Heated Steering Wheel
If equipped with remote start, the
heated steering wheel will turn on
automatically during a remote start
along with the heated seats when it is
cold outside. The heated steering
wheel indicator light may not
come on.
If equipped with auto heated seats,
the heated steering wheel will turn on
when the auto heated seat is
activated. The heated steering wheel
indicator will display the state of the
steering wheel heat. See
Heated and
Ventilated Front Seats 037.
Horn
Pressaon the steering wheel pad to
sound the horn.
Windshield Wiper/Washer

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
INSTRUMENTS AND CONTROLS 121
Remote Lock, Unlock, and Start
Touch and the following may display:
.Remote Unlock Light Feedback
.Remote Lock Feedback
.Remote Door Unlock
.Remote Start Auto Cool Seats
.Remote Start Auto Heat Seats
.Remote Window Operation
.Passive Door Unlock
.Passive Door Lock
.Remote Left in Vehicle Alert
.Remote Removed from Vehicle Alert
Remote Unlock Light Feedback
This setting flashes the exterior lamps
when the vehicle is unlocked with the
remote key.
Touch Off or Flash Lights.
Remote Lock Feedback
This setting specifies how the vehicle
responds when the vehicle is locked
with the remote key.
Touch Off, Lights and Horn, Lights
Only, or Horn Only. Remote Door Unlock
This setting specifies whether all
doors, or just the driver door, unlock
when pressing
Kon the remote key.
Touch All Doors or Driver Door.
Remote Start Auto Cool Seats
This setting automatically turns on
the ventilated seats when using the
remote start function on warm days.
See Heated and Ventilated Front Seats
0 37 and
Remote Vehicle Start 013.
Touch Off or On.
Remote Start Auto Heat Seats
This setting automatically turns on
the heated seats when using the
remote start function on cold days.
See Heated and Ventilated Front Seats
0 37 and
Remote Vehicle Start 013.
If equipped with Auto Heated Steering
Wheel, this feature will turn on when
the Remote Start Auto Heated Seats
turn on.
Touch Off or On. Remote Window Operation
If equipped, this feature enables
remote operation of the windows with
the remote key. See
Remote Keyless
Entry (RKE) System Operation 07.
Touch Off or On.
Passive Door Unlock
This setting specifies which doors
unlock when using the button on the
driver door handle to unlock the
vehicle.
Touch All Doors or Driver Door Only.
Passive Door Lock
This setting specifies if the vehicle will
automatically lock, or lock and
provide an alert after all the doors are
closed, and you walk away from the
vehicle with the remote key. See
Remote Keyless Entry (RKE) System
Operation 07.
Touch Off, On with Horn Chirp, or On.
Remote Left in Vehicle Alert
This feature sounds an alert when the
remote key is left in the vehicle. This
menu also enables Remote No Longer
in Vehicle Alert.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
122 INSTRUMENTS AND CONTROLS
Touch Off or On.
Remote Removed from Vehicle
Alert
This feature beeps the horn three
times when exiting a running vehicle
with the remote key.
Touch Off or On.
Seating Position
Touch and the following may display:
.Seat Entry Memory
.Seat Exit Memory
Seat Entry Memory
This feature automatically recalls the
previously stored 1 or 2 button
positions when the ignition is changed
from off to on or ACC/ACCESSORY.
See Memory Seats 034.
Touch Off or On.
Seat Exit Memory
This feature automatically recalls the
previously stored exit button positions
when the ignition is changed from on
or ACC/ACCESSORY to off if the driver
door is open or opened. See Memory
Seats 034. Touch Off or On.
Teen Driver
See
“Teen Driver” underSettings 0176.
Valet Mode
This will lock the infotainment system
and steering wheel controls. It may
also limit access to vehicle storage
locations, if equipped.
To enable valet mode:
1. Enter a four-digit code on the keypad.
2. Touch Enter to go to the confirmation screen.
3. Re-enter the four-digit code.
Touch Lock or Unlock to lock or
unlock the system. Touch Back to go
back to the previous menu.
Universal Remote
System
See Radio Frequency Statement 0409.
Universal Remote System
Programming
If equipped, these buttons are in the
overhead console.
This system can replace up to three
remote control transmitters used to
activate devices such as garage door
openers, security systems, and home
automation devices. These
instructions refer to a garage door
opener, but can be used for other
devices.
Do not use the Universal Remote
system with any garage door opener
that does not have the stop and