fuel CADILLAC CT4 2021 Owner's Manual

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
14 KEYS, DOORS, AND WINDOWS
If your vehicle is low on fuel, do not
use the remote start feature. The
vehicle may run out of fuel.
The remote key range may be shorter
while the vehicle is running.
Other conditions can affect the
performance of the remote key. See
Remote Keyless Entry (RKE) System
07.
You are allowed multiple starts
totaling 30 minutes of engine run
time. The maximum run time of a
single start is 15 minutes, and it will
shut off automatically. You could do
three 10 minute starts if you manually
shut off after 10 minutes. The last
10 minute start would shut off
automatically as your total
30 minutes will have been used.
Starting the Engine Using Remote
Start
1. Press
Stwice on the remote key.
The turn signal lamps will flash.
The lamps flash to confirm the
request to remote start the vehicle
has been received. During the
remote start, the doors will be locked and the parking lamps will
remain on as long as the engine is
running.
2. The engine will shut off after 15 minutes or after the remainder
of the 30 minute total running
time is used, unless you stop the
remote start before engine running
has completed or the vehicle is
turned on.
3. After entering the vehicle during a remote start, press the brake and
ENGINE START/STOP with the
remote key in the vehicle to drive
the vehicle.
Additional Engine Run Time
Remote start can be used for up to
30 minutes of total engine run time.
After two remote starts of 15 minutes,
or multiple shorter time starts
totaling 30 minutes have been used,
the vehicle must be started normally
before the remote start can be used
again. Canceling a Remote Start
To cancel a remote start, do any of
the following:
.PressS. The parking lamps will
turn off.
.Turn on the hazard warning
flashers.
.Turn the vehicle on and then
back off.
Conditions in Which Remote Start
Will Not Work
The remote start will not operate if
any of the following occur:
.The ignition is in any mode other
than off.
.A remote key is in the vehicle.
.The hood is not closed.
.The hazard warning flashers are on.
.There is an emission control system
malfunction.
.The engine coolant temperature is
too high.
.The oil pressure is low.
.The 30 minutes of engine run time
have been used.
.The vehicle is not in P (Park).

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
KEYS, DOORS, AND WINDOWS 17
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 mechanical key
is used, or the correct mechanical key
is not fully inserted. The free-turning
door lock feature prevents the lock
from being forced open. To reset the
lock, turn it to the vertical position
with the correct mechanical key fully
inserted. Remove the mechanical key
and insert it again. If this does not
reset the lock, turn the mechanical
key halfway around in the cylinder
and repeat the reset procedure.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. When
Qis pressed on the power door
lock switch with the door open, a
chime will sound three times
indicating that delayed locking is
active.
The doors will then lock automatically
five seconds after all doors are closed.
If a door is reopened before
five seconds have elapsed, the
five-second timer will reset once all
the doors are closed again.
Press
Qon the door lock switch again,
or press
Qon the key, to override this
feature and lock the doors
immediately.
Delayed locking can be programmed.
See Vehicle Personalization 0117.
Automatic Door Locks
The doors will lock automatically
when all doors are closed, the ignition
is on, and the vehicle is shifted out of
P (Park).
If a vehicle door is unlocked, and then
opened and closed, the doors will lock
either when your foot is removed from
the brake or the vehicle speed
becomes faster than 13 km/h (8 mph).

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
26 KEYS, DOORS, AND WINDOWS
Turn this feature on or off through
vehicle personalization. SeeVehicle
Personalization 0117.
Interior Mirrors
Interior Rearview Mirrors
Adjust the rearview mirror for a clear
view of the area behind the vehicle.
Do not spray glass cleaner directly on
the mirror. Use a soft towel dampened
with water.
Manual Rearview Mirror
If equipped, push the tab forward for
daytime use and pull it rearward for
nighttime use to avoid glare of the
headlamps from behind.
Automatic Dimming
Rearview Mirror
If equipped, automatic dimming
reduces the glare of headlamps from
behind. The dimming feature comes
on when the vehicle is started.
Windows
{
Warning
Never leave a child, a helpless adult,
or a pet alone in a vehicle,
especially with the windows closed
in warm or hot weather. They can
be overcome by the extreme heat
and suffer permanent injuries or
even death from heat stroke.
The vehicle aerodynamics are
designed to improve fuel economy
performance. This may result in a
pulsing sound when either rear
window is down and the front windows are up. To reduce the sound,
open either a front window or the
sunroof, if equipped.
Power Windows
{Warning
Children could be seriously injured
or killed if caught in the path of a
closing window. Never leave the
remote key in a vehicle with
children. When there are children in
the rear seat, use the window
lockout switch to prevent operation
of the windows. See
Keys06.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
SEATS AND RESTRAINTS 53
{Warning
When an airbag inflates, there may
be dust in the air. This dust could
cause breathing problems for
people with a history of asthma or
other breathing trouble. To avoid
this, everyone in the vehicle should
get out as soon as it is safe to do
so. If you have breathing problems
but cannot get out of the vehicle
after an airbag inflates, then get
fresh air by opening a window or a
door. If you experience breathing
problems following an airbag
deployment, you should seek
medical attention.
The vehicle has a feature that may
automatically unlock the doors, turn
on the interior lamps and hazard
warning flashers, and shut off the fuel
system after the airbags inflate. The
feature may also activate, without
airbag inflation, after an event that
exceeds a predetermined threshold.
After turning the ignition off and then
on again, the fuel system will return
to normal operation; the doors can be locked, the interior lamps can be
turned off, and the hazard warning
flashers can be turned off using the
controls for those features. If any of
these systems are damaged in the
crash they may not operate as normal.
{Warning
A crash severe enough to inflate the
airbags may have also damaged
important functions in the vehicle,
such as the fuel system, brake and
steering systems, etc. Even if the
vehicle appears to be drivable after
a moderate crash, there may be
concealed damage that could make
it difficult to safely operate the
vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag.
.Airbags are designed to inflate only
once. After an airbag inflates, you
will need some new parts for the
airbag system. If you do not get
them, the airbag system will not be
there to help protect you in another
crash. A new system will include
airbag modules and possibly other
parts. The service manual for the
vehicle covers the need to replace
other parts.
.The vehicle has a crash sensing and
diagnostic module which records
information after a crash. See
Vehicle Data Recording and Privacy
0 410 and
Event Data Recorders 0411.
.Let only qualified technicians work
on the airbag system. Improper
service can mean that an airbag
system will not work properly. See
your dealer for service.
Passenger Sensing System
The vehicle has a passenger sensing
system for the front outboard
passenger position. The passenger
airbag status indicator will light on
the overhead console when the vehicle
is started.

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
88 INSTRUMENTS AND CONTROLS
Instrument Cluster (Base Level)
English Base Level Cluster Shown, Metric Similar
1.Tachometer 093
2. Driver Information Center (DIC)
(Base Level) 0107 or
Driver Information Center (DIC)
(Uplevel) 0110
3. Speedometer 093 4.
Engine Coolant Temperature Gauge
(Base Level) 094 or
Engine Coolant Temperature Gauge
(Uplevel) 095
5. Fuel Gauge 094
Cluster Menu
There is an interactive display area in
the center of the instrument cluster.
Use the right steering wheel control to
open and scroll through the different
items and displays.
Press
SorTto access the cluster
applications. Use the thumbwheel to
scroll through the list of available
features within the applications. Not
all applications or features will be
available on all vehicles.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
INSTRUMENTS AND CONTROLS 89
.Info App. This is where the selected
Driver Information Center (DIC)
displays can be viewed. SeeDriver
Information Center (DIC) (Base Level)
0 107 or
Driver Information Center (DIC)
(Uplevel) 0110.
.Audio
.Navigation
.Phone
.Options
Audio
In the Audio menu browse for music,
select from the favorites, or change
the audio source. Use the thumbwheel
to change the station or go to the next
or previous track.
Navigation
If there is an active route, press the
thumbwheel to cancel or resume route
guidance, or turn the voice prompts
on or off. Phone
In the Phone menu, if there is no
active phone call, view recent calls,
or scroll through contacts. If there is
an active call, mute the phone or
switch to handset operation.
Options
Use the thumbwheel to scroll through
items in the Options menu.
Head-up Display (HUD) :
If equipped,
this feature allows for adjusting the
angle of the HUD image and changing
or turning off the Speed Limit Sign.
HUD Rotation (Uplevel): Press the
thumbwheel while Adjust Rotation is
highlighted to enter Adjust Mode.
Scroll to adjust the angle of the HUD
display. Press the thumbwheel to
confirm and save the setting. This
feature may only be available in
P (Park).
Speed Sign: If equipped, press the
thumbwheel while Speed Sign is
highlighted to turn it on or off.
Units : Choose US or metric units by
pressing the thumbwheel while the
desired item is highlighted. Info Page Options :
Press the
thumbwheel to select the items to be
displayed in the Info app. See Driver
Information Center (DIC) (Base Level)
0 107 or
Driver Information Center (DIC)
(Uplevel) 0110.
Display : Press the thumbwheel to
enter the Display menu. Select to turn
on or off the speedometer, time, fuel
range, or, if equipped, compass or
speed sign.
Speed Warning : The Speed Warning
display allows the driver to set a
warning at a speed that they do not
want to exceed. To set the Speed
Warning press the thumbwheel when
Speed Warning is displayed. Use the
thumbwheel to adjust the value and
press to set the speed.
Once the speed is set, this feature can
be turned off by pressing the
thumbwheel while viewing this page.
If the selected speed limit is exceeded,
a pop-up warning is displayed with a
chime.
Software Information : Displays open
source software information.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
90 INSTRUMENTS AND CONTROLS
Instrument Cluster (Uplevel)
Tour Mode Shown, Other Modes Similar
1.Driver Information Center (DIC)
(Base Level) 0107 or
Driver Information Center (DIC)
(Uplevel) 0110 2.
Fuel Gauge 094
3. Speedometer 093
4. Tachometer 093
Cluster Menu
There is an interactive display area in
the center of the instrument cluster.
Use the right steering wheel control to
open and scroll through the different
items and displays.
PressSorTto access the cluster
applications. Use the thumbwheel to
scroll
yorzthrough the list of
available features. Press the
thumbwheel to select. Not all
applications will be available on all
vehicles.