2020 CADILLAC CT4 keyless entry

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
KEYS, DOORS, AND WINDOWS 7
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . . . . 14
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 16
Power Door Locks . . . . . . . . . . . . . . . . . 18
Delayed Locking . . . . . . . . . . . . . . . . . . . 18
Automatic Door Locks . . . . . . . . . . . . 19
Lockout Protection . . . . . . . . . . . . . . . . 19
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . 19
Doors
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . 22
Vehicle Alarm System . . . . . . . . . . . . . 22
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . 24
Immobilizer Operation . . . . . . . . . . . . 24
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . 25
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . 26 Folding Mirrors . . . . . . . . . . . . . . . . . . . . 26
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . 27
Automatic Dimming Mirror . . . . . . . 27
Reverse Tilt Mirrors . . . . . . . . . . . . . . . 27
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . 28
Manual Rearview Mirror . . . . . . . . . . 28
Automatic Dimming Rearview
Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Power Windows . . . . . . . . . . . . . . . . . . . . 29
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
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-13183937) -
2020 - crc - 4/28/20
8 KEYS, DOORS, AND WINDOWS
The mechanical key, inside the remote
key, is used for the driver door and
glove box.To remove the mechanical key, press
the button on the side of the remote
key near the bottom, and pull the
mechanical key out. Never pull the
mechanical key out without pressing
the button.
If it becomes difficult to turn the key,
inspect the key blade for debris.
Periodically clean with a brush
or pick.
See your dealer if a new mechanical
key is needed.
Contact Roadside Service if locked out
of the vehicle. See
Roadside Service
0 325.
With an active OnStar or connected
service plan, an OnStar Advisor may
remotely unlock the vehicle. See
OnStar Overview 0335.
Remote Keyless Entry
(RKE) System
See Radio Frequency Statement 0330.
If there is a decrease in the remote
key operating range: .
Check the distance. The remote
key may be too far from the
vehicle.
. Check the location. Other vehicles
or objects may be blocking the
signal.
. Check the remote key battery. See
“Battery Replacement ”later in this
section.
. If the remote key is still not
working correctly, see your dealer
or a qualified technician for
service.
Remote Keyless Entry
(RKE) System Operation
The Keyless Access system allows for
vehicle entry when the remote key is
within 1 m (3 ft). See “Keyless Access
Operation ”later in this section.
The remote key functions may work
up to 60 m (197 ft) away from the
vehicle.
Other conditions can impact the
performance of the remote key. See
Remote Keyless Entry (RKE) System
0 8.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
KEYS, DOORS, AND WINDOWS 15
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. SeeHeated and Ventilated
Front Seats 040.
If equipped with a remote start heated
steering wheel, it may come on during
a remote start. See Heated Steering
Wheel 086.
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.
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
0 8. 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:
. Press
S. The parking lamps will
turn off.
. Turn on the hazard warning
flashers.
. Turn the vehicle on and then
back off.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
16 KEYS, DOORS, AND WINDOWS
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).
Door Locks
{Warning
Unlocked doors can be dangerous.
(Continued)
Warning (Continued)
.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 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
(Continued)
Warning (Continued)
the vehicle. Locking the doors
can help prevent this from
happening.
To lock or unlock the doors from
outside the vehicle:
. Press
QorKon the remote key.
See Remote Keyless Entry (RKE)
System Operation 08.
. 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:
. Press
QorKon 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-13183937) -
2020 - crc - 4/28/20
KEYS, DOORS, AND WINDOWS 17
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. SeeRemote
Keyless Entry (RKE) System Operation
0 8. 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-13183937) -
2020 - crc - 4/28/20
KEYS, DOORS, AND WINDOWS 21
Warning (Continued)
set the fan speed to the
highest setting. See“Climate
Control Systems” in the Index.
. If the vehicle is equipped with
a power liftgate, disable the
power liftgate function.
See Engine Exhaust 0168.
Manual Trunk
To release the trunk, the vehicle must
be off or the shift lever must be in
P (Park).
.
Press|on the driver door.
. Press
Xtwice quickly on the
remote key.
. Press the touch pad on the rear of
the trunk above the license plate
when all doors are unlocked.
The trunk can be opened while the
vehicle is locked by pressing the touch
pad above the license plate while the
remote key is within 1 m (3 ft) of the
rear of the vehicle. See Remote Keyless
Entry (RKE) System Operation 08.
Close the trunk by pulling on the
handle. Do not use the handle as a
tie-down. Do not press the touch pad
while closing the trunk; this will cause
the trunk lid to be unlatched.
The trunk has an electric latch. If the
vehicle has lost power or the battery
is disconnected, the trunk will not
open. If this happens, use the
emergency trunk release handle.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
KEYS, DOORS, AND WINDOWS 25
The system has one or more remote
keys matched to an immobilizer
control unit in the vehicle. Only a
correctly matched remote key will
start 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
Operation08.
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 08.
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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-13183937) -
2020 - crc - 4/28/20
KEYS, DOORS, AND WINDOWS 27
Resetting the Power Folding
Mirrors
Reset the power folding mirrors if:
.The mirrors are accidentally
obstructed while folding.
. They are accidentally manually
folded/unfolded.
. The mirrors do not stay in the
unfolded position.
. The mirrors vibrate at normal
driving speeds.
Fold and unfold the mirrors one time
using the mirror controls to reset
them to their normal position. A noise
may be heard during the resetting of
the power folding mirrors. This sound
is normal after a manual folding
operation.
Remote Mirror Folding
If equipped with power folding
mirrors, and the mirrors have been
folded with the power folding mirror
switch, they may not be automatically
unfolded by the Remote Mirror
Folding feature. If equipped with power folding
mirrors, and the mirrors have not
been folded with the power folding
mirror switch and the vehicle is in
P (Park), they may be automatically
folded/unfolded as follows:
1. If doors are locked by pressing
H
on the remote key, the mirrors
will fold. If doors are unlocked by
pressing
Ion the remote key,
the mirrors will unfold. See
Remote Keyless Entry (RKE)
System Operation 08.
2. If doors are locked by pressing the door handle lock/unlock
button, the mirrors will fold.
If doors are unlocked by pressing
the door handle button, the
mirrors will unfold. See “Keyless
Unlocking/Locking from the
Driver Door” inRemote Keyless
Entry (RKE) System Operation 08.
3. If passive locking is enabled and doors are locked by that feature,
the mirrors will fold. See “Passive
Locking” inRemote Keyless Entry
(RKE) System Operation 08.
Heated Mirrors
K:The rear window defogger also
heats the outside mirrors.
See Dual Automatic Climate Control
System 0134.
Automatic Dimming Mirror
If the vehicle has the automatic
dimming mirror, the driver outside
mirror automatically adjusts for the
glare of headlamps behind you.
Reverse Tilt Mirrors
If equipped with reverse tilt mirrors
and memory seats, the passenger and/
or driver mirror tilts to a preselected
position when the vehicle is in
R (Reverse). This allows the curb to be
seen when parallel parking. The
mirror(s) may move from their tilted
position when:
.
The vehicle is shifted out of
R (Reverse), or remains in
R (Reverse) for about 30 seconds.
. The ignition is turned off.