remote start CADILLAC CT4 2021 Owner's Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INTRODUCTION 3
H:Flammable
[:Forward Collision Alert
R:Fuse Block Cover Lock Location
+:Fuses
j:ISOFIX/LATCH System Child
Restraints
Q: Keep Fuse Block Covers Properly
Installed
|: Lane Change Alert
@:Lane Departure Warning
A:Lane Keep Assist
*: Malfunction Indicator Lamp
::Oil Pressure
X:Park Assist
~:Pedestrian Ahead Indicator
O:Power
7:Rear Cross Traffic Alert
I:Registered Technician
/:Remote Vehicle Start
h:Risk of Electrical Fire
>:Seat Belt Reminders
I:Side Blind Zone Alert
h:Stop/Start
7:Tire Pressure Monitor
d:Traction Control/StabiliTrak/
Electronic Stability Control (ESC)
a: Under Pressure
V: Vehicle Ahead Indicator

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
6 KEYS, DOORS, AND WINDOWS
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . . . . . . 7
Remote Vehicle Start . . . . . . . . . . . . . . 13
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Door Locks . . . . . . . . . . . . . . . . . 17
Delayed Locking . . . . . . . . . . . . . . . . . . . 17
Automatic Door Locks . . . . . . . . . . . . 17
Lockout Protection . . . . . . . . . . . . . . . . 18
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . 18
Doors
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . 20
Vehicle Alarm System . . . . . . . . . . . . . 20
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . 22
Immobilizer Operation . . . . . . . . . . . . 23
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . 23
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . 24
Folding Mirrors . . . . . . . . . . . . . . . . . . . . 24
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . 25
Automatic Dimming Mirror . . . . . . . 25
Reverse Tilt Mirrors . . . . . . . . . . . . . . . 25
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . 26
Manual Rearview Mirror . . . . . . . . . . 26
Automatic Dimming Rearview Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Power Windows . . . . . . . . . . . . . . . . . . . . 26
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with a
remote key is dangerous and
children or others could be
seriously injured or killed. They
could operate the power windows
or other controls or make the
vehicle move. The windows will
function with the remote key in the
vehicle, and children or others
could be caught in the path of a
closing window. Do not leave
children in a vehicle with a
remote key.

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
KEYS, DOORS, AND WINDOWS 9
Keyless Unlocking/Locking from the
Driver Door
When the doors are locked and the
remote key is within 1 m (3 ft) of the
door handle, pressing the door handle
button on the driver door handle will
unlock the driver door. If the door
handle button is pressed again within
five seconds, all passenger doors will
unlock.
If equipped with remote folding
mirror, pressing the driver door
handle button may fold and unfold
the mirrors. SeeFolding Mirrors024.
Driver Door Shown, Passenger Similar Pressing the door handle button will
cause all doors to lock if any of the
following occur:
.It has been more than five seconds
since the first door handle button
press.
.Two door handle button presses
were used to unlock all doors.
.Any vehicle door has opened and all
doors are now closed.
Keyless Unlocking/Locking from the
Passenger Doors
When the doors are locked and the
remote key is within 1 m (3 ft) of the
door handle, pressing the door handle
button on a passenger door handle
will unlock all doors. Pressing the
door handle button will cause all
doors to lock if any of the following
occur:
.The door handle button was used to
unlock all doors.
.Any vehicle door has opened and all
doors are now closed. Disable/Enable Keyless Unlocking of
Exterior Door Handles and Trunk
If equipped, keyless unlocking of the
exterior door handles and trunk can
be disabled and enabled.
Disabling 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 four
times quickly to indicate access is
disabled. Using any exterior handle to
unlock the doors or open the trunk
will cause the turn signal lamps to
flash four times quickly, indicating
access is disabled. If disabled, disarm
the alarm system before starting the
vehicle.
Disabling Keyless Unlocking may also
be configured under Vehicle
Personalization. See Vehicle
Personalization 0117.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
KEYS, DOORS, AND WINDOWS 11
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.
Programming with Recognized
Remote Keys
A new key can be programmed to the
vehicle when there are two
recognized keys.
To program, the vehicle must be in
RUN and both the recognized and new
remote keys must be with you.1. Place the two recognized remote keys on the passenger seat.
2. Scroll to the DIC menu to "Remote Key Relearn" and select.
The DIC displays READY FOR
REMOTE #3, 4, 5, etc.
3. Place the new remote key into therear cupholder.
4. Press ENGINE START/STOP. When the remote key is learned the DIC
display will show that it is ready to
program the next remote key.
5. Remove the remote key from the rear cupholder and press
KorQ
on the remote key.
To program additional remote keys,
repeat Steps 4–5. When all additional remote keys
are programmed, press and hold
ENGINE START/STOP for
approximately 12 seconds to exit
programming mode.
Programming without Recognized
Remote Keys
If two currently recognized remote
keys are not available, see your dealer
to program new remote keys.
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

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
12 KEYS, DOORS, AND WINDOWS
POCKET THEN START YOUR
VEHICLE, follow the steps shown
below:
1. Place the remote key into the rearcupholder.
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 heat. These surfaces can be
hot to the touch at temperatures
above 59 °C (138 °F).
Caution
When replacing the battery, do not
touch any of the circuitry on the
remote key. Static from your body
could damage the remote key.
Caution
Always replace the battery with the
correct type. Replacing the battery
with an incorrect type could
potentially create a risk of battery
explosion. Dispose of used batteries
according to instructions and local
laws. Do not attempt to burn,
crush, or cut the used battery, and
avoid exposing the battery to
environments with extremely low
air pressures or high temperatures.
Replace the battery if the DIC displays
REPLACE BATTERY IN KEY.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
KEYS, DOORS, AND WINDOWS 13
1. Press the button on the side of theremote key near the bottom and
pull the mechanical key out. Never
pull the mechanical key out
without pressing the button.
2. Use the mechanical key blade inthe slot to remove the battery
cover by hand.
3. Remove the seal by pulling on thetab to access the battery.
4. Remove the old battery. Do not use a metal object.
5. Insert the new battery, negative side facing down. Replace with a
CR2450 or equivalent battery.
6. Replace the seal, pushing it into the groove around the battery
compartment.
7. Replace the battery cover by snapping it back into the
remote key.
8. Reinsert the mechanical key.
Remote Vehicle Start
This feature allows the engine to be
started from outside the vehicle.
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 037.
If equipped with a remote start heated
steering wheel, it may come on during
a remote start. See Heated Steering
Wheel 082.
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-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 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
KEYS, DOORS, AND WINDOWS 23
Immobilizer Operation
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the vehicle is
turned off.
The immobilization system is
disarmed when the ignition is turned
on or to ACC/ACCESSORY and a valid
remote key is present in the vehicle.
The security light, in the instrument
cluster, comes on if there is a problem
with arming or disarming the
theft-deterrent system.
The system has one or more remote
keys matched to an immobilizer
control unit in the vehicle. Only a
correctly matched remote key willstart the vehicle. If the remote key is
ever damaged, you may not be able to
start your vehicle.
When trying to start the vehicle, the
security light may come on briefly.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
ignition off and try again.
If the vehicle will not change ignition
modes (ACC/ACCESSORY, on, off), and
the remote key appears to be
undamaged, try another remote key.
Or, you may try placing the remote
key in the backup location. See
Remote Keyless Entry (RKE) System
Operation
07.
If the ignition modes will not change
with the other remote key or in the
backup location, the vehicle needs
service. If the ignition does change
modes, the first remote key may be
faulty. See your dealer.
It is possible for the immobilizer
system to learn new or replacement
remote keys. Up to eight remote keys
can be programmed for the vehicle. To
program additional remote keys, see “Programming Remote Keys to the
Vehicle
”under Remote Keyless Entry
(RKE) System Operation 07.
Do not leave the remote key or device
that disarms or deactivates the
theft-deterrent system in the vehicle.
Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things,
like other vehicles, look farther
away than they really are. If you cut
too sharply into the right lane, you
could hit a vehicle on the right.
Check the inside mirror or glance
over your shoulder before changing
lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from the
driver seat.