2023 CADILLAC CT4 key

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Keys, Doors, and Windows 15
Warning (Continued)
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(Continued)
Caution (Continued)
the battery to environments
with extremely low air
pressures or high
temperatures.
Caution
If the remote key is not
reassembled properly,
liquids could enter the
housing and damage the
circuitry, resulting in a
remote key malfunction
and/or failure. To prevent
damage, always follow the
steps for remote key
reassembly in this manual to
ensure the remote key is
sealed properly whenever
the remote key is opened.
Replace the battery if the DIC
displays REPLACE BATTERY
IN KEY.
1. Press the button on the side of the remote key and
pull the mechanical key
out. Never pull the
mechanical key out without
pressing the button.

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 17
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 Key
09.
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 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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
18 Keys, Doors, and Windows
.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).
Door Locks
{Warning
Unlocked doors can be
dangerous.
.Passengers, especially
children, can easily open
the doors and fall out of a
moving vehicle. The doors
can be unlocked and
opened while the vehicle is
moving. The chance of
being thrown out of the(Continued)
Warning (Continued)
vehicle in a crash is
increased if the doors are
not locked. So, all
passengers should wear
seat belts properly and
the doors should be
locked whenever the
vehicle is driven.
.Young children who get
into unlocked vehicles may
be unable to get out.
A child can be overcome
by extreme heat and can
suffer permanent injuries
or even death from heat
stroke. Always lock the
vehicle whenever
leaving it.
.Outsiders can easily enter
through an unlocked door
when you slow down or
stop the vehicle. Locking
the doors can help
prevent this from
happening. To lock or unlock the doors
from outside the vehicle:
.PressQorKon the remote
key. See Remote Key
Operation 09.
.Use the mechanical key in
the driver door. The key lock
cylinder is covered with
a cap.
See “Driver Door Key Lock
Cylinder Access (In Case of
Dead Battery)” later in this
section.
To lock or unlock the doors
from inside the vehicle:
.PressQorKon the power
door lock switch.
.Pull once on the door handle
to unlock the door and again
to open the door.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Keys, Doors, and Windows 19
Keyless Access
When the doors are locked
and the remote key is within
1 m (3 ft) of the driver door
handle, press the lock/unlock
button. When unlocking from
the driver door, the first press
unlocks that door; press again
within five seconds to unlock
the passenger door and the
trunk. See Remote Key
Operation09. Driver Door Key Lock
Cylinder Access (In Case of
Dead Battery)
To access the driver door key
lock cylinder:
1. Pull the door handle (1) to the open position and hold
it open until the cap
removal is complete.
2. Insert the mechanical key into the slot (3) on the
bottom of the cap (2) and
lift the mechanical key
upward.
3. Move the cap (2) rearward and remove. 4. Use the mechanical key in
the cylinder.
To replace the cap: 1. Pull the door handle (1) to the open position and hold
it open until the cap
installation is complete.
2. Insert the two tabs (6) at
the back of the cap
between the seal (5) and
the metal base (4).

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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Keys, Doors, and Windows 21
WhenQis 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. 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 “Power Door Locks”.
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).
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.
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 “Power Door Locks”.
Lockout Protection
If the vehicle is on or in
accessory mode 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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
22 Keys, Doors, and Windows
Safety Locks
With Folding Mirrors
Without Folding MirrorsThe 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 031.
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.
Doors
Trunk
{Warning
Exhaust gases can enter the
vehicle if it is driven with the
liftgate or trunk/hatch open,
or with any objects that
pass through the seal
between the body and the
trunk/hatch or liftgate.
Engine exhaust contains
carbon monoxide (CO) which
cannot be seen or smelled.
It can cause
unconsciousness and even
death.
If the vehicle must be driven
with the liftgate or trunk/
hatch open:
.Close all of the windows.
.Fully open the air outlets
on or under the
instrument panel. (Continued)