2021 CADILLAC CT4 warning

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.

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
KEYS, DOORS, AND WINDOWS 27
Power windows work when the
ignition is on, in ACC/ACCESSORY,
or when Retained Accessory Power
(RAP) is active. SeeRetained Accessory
Power (RAP) 0223.
Using the window switch, press to
open or pull to close the window.
The windows may be temporarily
disabled if they are used repeatedly
within a short time.
Window Lockout
With Folding Mirrors, Without Folding Mirrors Similar
This feature stops the rear passenger
window switches from working.
.Press{ 2to engage the rear
window lockout feature. The
indicator light is on when engaged.
The rear door safety locks will also
engage.
.Press{ 2again to disengage.
The rear door safety locks will also
disengage.
Window Express Movement
All windows can be opened without
holding the window switch. Press the
switch down fully and quickly release
to express open the window.
If equipped, pull the window switch
up fully and quickly release to express
close the window. Briefly press or pull
the window switch in the same
direction to stop that window’s
express movement.
Window Automatic Reversal
System
The express-close feature will reverse
window movement if it comes in
contact with an object. Extreme cold
or ice could cause the window to auto-reverse. The window will operate
normally after the object or condition
is removed.
Automatic Reversal System
Override
{Warning
If automatic reversal system
override is active, the window will
not reverse automatically. You or
others could be injured and the
window could be damaged. Before
using automatic reversal system
override, make sure that all people
and obstructions are clear of the
window path.
When the engine is on, override the
automatic reversal system by pulling
and holding the window switch if
conditions prevent it from closing.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
SEATS AND RESTRAINTS 31
Head Restraints{
Warning
With head restraints that are not
installed and adjusted properly,
there is a greater chance that
occupants will suffer a neck/spinal
injury in a crash. Do not drive until
the head restraints for all occupants
are installed and adjusted properly.
Adjust the head restraint so that the
top of the restraint is at the same
height as the top of the occupant's
head. This position reduces the
chance of a neck injury in a crash.
Front Seats
The vehicle's front seats have
adjustable head restraints in the
outboard seating positions.
The height of the head restraint can
be adjusted.
To raise or lower the head restraint,
press the button located on the side of
the head restraint, and pull up or
push the head restraint down and
release the button. Pull and push on
the head restraint after the button is
released to make sure that it is locked
in place.
The front seat outboard head
restraints are not removable.
Rear Seats
The vehicle's rear seat has adjustable
head restraints in the outboard
seating positions.
The height of the head restraint can
be adjusted. Pull the head restraint up
to raise it. Try to move the head
restraint to make sure that it is locked
in place.
To lower the head restraint, press the
button, located on the top of the
seatback, and push the head restraint
down. Try to move the head restraint
after the button is released to make
sure that it is locked in place.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
32 SEATS AND RESTRAINTS
Rear outboard head restraints are not
removable.
The rear seat outboard head restraints
are not intended to be removed.
If removal is required see your dealer
for assistance with removal.
Front Seats
Power Seat Adjustment
{Warning
You can lose control of the vehicle
if you try to adjust a driver seat
while the vehicle is moving. Adjust
the driver seat only when the
vehicle is not moving.
{Warning
The power seats will work with the
ignition off. Children could operate
the power seats and be injured.
Never leave children alone in the
vehicle.
To adjust the seat:
.Move the seat forward or rearward
by sliding the control forward or
rearward.
.Raise or lower the seat by moving
the rear of the control up or down.
.If equipped, raise or lower the front
part of the seat cushion by moving
the front of the control up or down.
For vehicles not equipped with front
cushion tilt, the front part of the
control will raise and lower the seat.
If the vehicle is not in P (Park), seat
travel may be limited. Release and
press the seat switch again to
continue movement. If something has blocked the seat
during movement, the movement may
stop. Remove the obstruction and try
the adjustment again. If movement is
still not available, see your dealer.
To adjust the seatback, see
Reclining
Seatbacks 033.
To adjust the lumbar support, see
Lumbar Adjustment 032.
Some vehicles are equipped with a
Safety Alert Seat. This feature
activates a vibrating pulse alert in the
driver seat to help the driver avoid
crashes.
Lumbar Adjustment

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
SEATS AND RESTRAINTS 33
1. To adjust lumbar support,if equipped:
.If equipped, press Up (1) to
move lumbar support upward.
.Press Rearward (2) to move
lumbar support rearward.
.If equipped, press Down (3) to
move lumbar support down.
.Press Forward (4) to move
lumbar support forward.
Uplevel Seat Adjustment
To adjust lumbar support, if equipped:
.Press and release or hold Feature
Select (1) to scroll to lumbar
support on the infotainment display.
.Press Forward (5) or Rearward (3) to
adjust lumbar forward or rearward.
.Press Up (2) or Down (4) to adjust
lumbar up or down.
Bolster Support
To adjust bolster support, if equipped:
Press and release or hold Feature
Select (1) to scroll to bolster support
on the infotainment display. Press
Forward (5) or Rearward (3) to adjust
bolster support inward or outward.
Thigh Support Adjustment
If equipped, pull up on the lever. Then
pull or push on the support to
lengthen or shorten. Release the lever
to lock in place.
Reclining Seatbacks
{Warning
Sitting in a reclined position when
the vehicle is in motion can be
dangerous. Even when buckled up,
the seat belts cannot do their job.
The shoulder belt will not be
against your body. Instead, it will be
in front of you. In a crash, you
could go into it, receiving neck or
other injuries.
The lap belt could go up over your
abdomen. The belt forces would be
there, not at your pelvic bones. This
could cause serious internal
injuries.
For proper protection when the
vehicle is in motion, have the
seatback upright. Then sit well back
in the seat and wear the seat belt
properly.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
SEATS AND RESTRAINTS 37
Obstructions
If something has blocked the driver
seat while recalling a memory
position, the recall may stop. Remove
the obstruction and try the recall
again. If the memory position still
does not recall, see your dealer.
Heated and Ventilated
Front Seats
{Warning
If temperature change or pain to
the skin cannot be felt, the seat
heater may cause burns. To reduce
the risk of burns, use care when
using the seat heater, especially for
long periods of time. Do not place
anything on the seat that insulates
against heat, such as a blanket,
cushion, cover, or similar item. This
may cause the seat heater to
overheat. An overheated seat heater
may cause a burn or may damage
the seat.If equipped, the buttons are near the
climate controls on the center stack.
To operate, the engine must be
running.
Press
Jorzto heat the driver or
passenger seat cushion and seatback.
Press
Cor{to ventilate the driver
or passenger seat.
Press the button once for the highest
setting. With each press of the button,
the seat will change to the next lower
setting, and then to the off setting.
The indicator lights next to the
buttons indicate three for the highest
setting and one for the lowest. If the front heated seats are on high, the
level may automatically be lowered
after approximately 30 minutes.
When this feature is off, the heated
and ventilated seat symbols on the
buttons are white. A ventilated seat
has a fan that pulls air through the
seat. The air is not cooled. When a
heated seat is turned on, the symbol
turns red. When a ventilated seat is
turned on, the symbol turns blue.
The passenger seat may take longer to
heat up.
Auto Heated and Ventilated Seats
If the vehicle is equipped with auto
heated or ventilated seats, and the
engine is running, this feature will
automatically activate the heated or
ventilated seats at the level required
by the vehicle's interior temperature.
The active high, medium, low, or off
heated or ventilated seat level will be
indicated by the manual heated and
ventilated seat buttons on the center
stack. Use the manual heated and
ventilated seat buttons on the center
stack to turn auto heated or ventilated
seats off. If the passenger seat is

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
40 SEATS AND RESTRAINTS
Raising the Seatback
{Warning
If either seatback is not locked, it
could move forward in a sudden
stop or crash. That could cause
injury to the person sitting there.
Always push and pull on the
seatbacks to be sure they are
locked.
{Warning
A seat belt that is improperly
routed, not properly attached,
or twisted will not provide the
protection needed in a crash. The
person wearing the belt could be
seriously injured. After raising the
rear seatback, always check to be
sure that the seat belts are properly
routed and attached, and are not
twisted.To raise a seatback:
1. Lift the seatback up. Make sure the center seat belt and latch do not
get trapped behind the seat. Push
the seatback rearward to lock it in
place.
A red tab near the seatback lever
retracts when the seatback is
locked in place.
2. Push and pull the top of the seatback to be sure it is locked into
position.
3. Reconnect the center seat belt mini-latch to the mini-buckle. Do
not let the belt twist.
4. Pull on the center seat belt to make sure the mini-latch is secure.
5. Repeat the steps to raise the other seatback, if necessary.
When the seat is not in use, it should
be kept in the upright, locked position.
Seat Belts
This section describes how to use seat
belts properly, and some things not
to do.
{Warning
Do not let anyone ride where a seat
belt cannot be worn properly. In a
crash, if you or your passenger(s)
are not wearing seat belts, injuries
can be much worse than if you are
wearing seat belts. You can be
seriously injured or killed by hitting
things inside the vehicle harder or
by being ejected from the vehicle.
In addition, anyone who is not
buckled up can strike other
passengers in the vehicle.
It is extremely dangerous to ride in
a cargo area, inside or outside of a
vehicle. In a collision, passengers
riding in these areas are more likely
to be seriously injured or killed. Do
not allow passengers to ride in any
area of the vehicle that is not
equipped with seats and seat belts.
Always wear a seat belt, and check
that all passenger(s) are restrained
properly too.