seats CADILLAC CT4 2021 Owner's Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Keys, Doors, and Windows . . . . . . . . . . 6
Seats and Restraints . . . . . . . . . . . . . . . 30
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Instruments and Controls . . . . . . . . . . 81
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Infotainment System . . . . . . . . . . . . . 134
Climate Controls . . . . . . . . . . . . . . . . . . 196
Driving and Operating . . . . . . . . . . . . 202
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 304
Service and Maintenance . . . . . . . . . 379
Technical Data . . . . . . . . . . . . . . . . . . . . 395
Customer Information . . . . . . . . . . . . 399
Reporting Safety Defects . . . . . . . . . 409
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413
Connected Services . . . . . . . . . . . . . . . 418
Index . . . . . . . . . . . . . . . . . . . . . . . . 421
Introduction
The names, logos, emblems, slogans,
vehicle model names, and vehicle
body designs appearing in this manual
including, but not limited to, GM, the
GM logo, the CADILLAC Emblem, and
CADILLAC CT4 are trademarks and/or
service marks of General Motors LLC,
its subsidiaries, affiliates, or licensors.
For vehicles first sold in Canada,
substitute the name“General Motors
of Canada Company ”for Cadillac
Motor Car Division wherever it
appears in this manual.
This manual describes features that
may or may not be on the vehicle
because of optional equipment that
was not purchased on the vehicle,
model variants, country specifications, features/applications that may not be
available in your region, or changes
subsequent to the printing of this
owner’s manual.
Refer to the purchase documentation
relating to your specific vehicle to
confirm the features.
Keep this manual in the vehicle for
quick reference.
Canadian Vehicle Owners
A French language manual can be
obtained from your dealer, at
www.helminc.com, or from:
Propriétaires Canadiens
On peut obtenir un exemplaire de ce
guide en français auprès du
concessionnaire ou à l'adresse
suivante:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
USA
Litho in U.S.A.
Part No. 84432194 B Second Printing©2020 General Motors LLC. All Rights Reserved.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
INTRODUCTION 5
1.Air Vents 0200.
2. Exterior Lamp Controls 0126.
Turn Signal Lever. See Turn and
Lane-Change Signals 0129.
3. Tap Shift Controls (If Equipped). See Manual Mode (Electronic Shifter)
0 235 or
Manual Mode (Mechanical Shifter)
0 234.
4. Cruise Control 0248.
Adaptive Cruise Control (Advanced)
0 251 (If Equipped).
Forward Collision Alert (FCA) System
0 283 (If Equipped).
Heated Steering Wheel 082 (If
Equipped).
5. Instrument Cluster (Base Level) 088
or
Instrument Cluster (Uplevel) 090.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) (Base Level) 0107 or
Driver Information Center (DIC)
(Uplevel) 0110.
6. Steering Wheel Controls 0137 (If
Equipped).
7. Windshield Wiper/Washer 082. 8. Infotainment. See
Overview0135.
9. Light Sensor. See Automatic
Headlamp System 0128.
10. Hazard Warning Flashers 0129.
11. Dual Automatic Climate Control
System 0196.
12. Heated and Ventilated Front Seats
037 (If Equipped).
13. Lane Keep Assist (LKA) 0291 (If
Equipped).
14. Traction Control/Electronic Stability
Control 0239.
Stop/Start Disable Switch. See Stop/
Start System 0221.
Automatic Vehicle Hold (AVH) 0239.
MODE Button or
«/ªButton
(V-Series Only). See Driver Mode
Control 0241.
15. Wireless Charging Pad (If Equipped) (Out of View). See
Wireless Charging 085.
16. Park Assist Button. See Assistance
Systems for Parking or Backing
0 277. 17. Shift Lever. See
Automatic
Transmission (Mechanical Shifter)
0 227 or
Automatic Transmission (Electronic
Shifter) 0229.
18. ENGINE START/STOP Button. See Ignition Positions 0219.
19. Horn 082.
20. Steering Wheel Adjustment 082.
21. Head-Up Display (HUD) 0112 (If
Equipped).
22. Hood Release (Out of View). See Hood 0307.
23. Instrument Panel Illumination
Control 0130.
24. Data Link Connector (DLC) (Out of View). See Malfunction Indicator
Lamp (Check Engine Light) 097.
25. Electric Parking Brake 0237 (If
Equipped).

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 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
24 KEYS, DOORS, AND WINDOWS
Power Mirrors
To adjust each mirror:1. Press
jor|to select the driver
or passenger side mirror. The
indicator light will illuminate.
2. Press the arrows on the control pad to move the mirror in the desired
direction.
3. Adjust each outside mirror so that a little of the vehicle and the area
behind it can be seen.
4. Press
jor|again to deselect the
mirror.
Memory Mirrors
The vehicle may have memory
mirrors. See Memory Seats 034.
Side Blind Zone Alert (SBZA)
The vehicle may have SBZA. See Side
Blind Zone Alert (SBZA) 0289.
Lane Change Alert (LCA)
The vehicle may have LCA. See Lane
Change Alert (LCA) 0289.
Folding Mirrors
Manual Folding Mirrors
The mirrors can be folded inward
toward the vehicle to prevent damage
when going through an automatic car
wash. Push the mirror outward to
return it to the original position.
Power Folding Mirrors
If equipped, pressgto power fold the
mirrors. Press
gagain to unfold.
The outside mirrors may
automatically unfold when the vehicle
is driven above 20 km/h (12 mph), but
may be folded with the power folding
mirror switch. If the vehicle speed is
driven above 40 km/h (25 mph), they
may automatically unfold and may
not be refolded with the power folding
mirror switch.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
KEYS, DOORS, AND WINDOWS 25
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 07.
2. If doors are locked by pressing the door handle 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 07.
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 07.
Heated Mirrors
K:The rear window defogger also
heats the outside mirrors.
See Dual Automatic Climate Control
System 0196.
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.
.The vehicle is driven in R (Reverse)
above a set speed.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 11/23/20
30 SEATS AND RESTRAINTS
Seats and Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . . . . . . 31
Front Seats
Power Seat Adjustment . . . . . . . . . . . 32
Lumbar Adjustment . . . . . . . . . . . . . . . 32
Thigh Support Adjustment . . . . . . . . 33
Reclining Seatbacks . . . . . . . . . . . . . . . 33
Memory Seats . . . . . . . . . . . . . . . . . . . . . . 34
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Rear Seats
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Seat Belts
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Buckle To Drive . . . . . . . . . . . . . . . . . . . . 41
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . 44
Seat Belt Use During Pregnancy . . . . . . . . . . . . . . . . . . . . . . . . . 46 Seat Belt Extender . . . . . . . . . . . . . . . . . 46
Safety System Check . . . . . . . . . . . . . . 47
Seat Belt Care . . . . . . . . . . . . . . . . . . . . . . 47
Replacing Seat Belt System Parts
after a Crash . . . . . . . . . . . . . . . . . . . . . . 47
Airbag System
Airbag System . . . . . . . . . . . . . . . . . . . . . 48
Where Are the Airbags? . . . . . . . . . . . 49
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
What Makes an Airbag Inflate? . . . 52
How Does an Airbag Restrain? . . . 52
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Passenger Sensing System . . . . . . . . 53
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Adding Equipment to the Airbag-Equipped Vehicle . . . . . . . . 58
Airbag System Check . . . . . . . . . . . . . . 58
Replacing Airbag System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . 59
Child Restraints
Older Children . . . . . . . . . . . . . . . . . . . . . 59
Infants and Young Children . . . . . . 60
Child Restraint Systems . . . . . . . . . . . 63
Where to Put the Restraint . . . . . . . 64
Lower Anchors and Tethers forChildren (LATCH System) . . . . . . . 65
Replacing LATCH System Parts After a Crash . . . . . . . . . . . . . . . . . . . . . 72
Securing Child Restraints (With the Seat Belt in the
Rear Seat) . . . . . . . . . . . . . . . . . . . . . . . . 72
Securing Child Restraints (With the Seat Belt in the
Front Seat) . . . . . . . . . . . . . . . . . . . . . . . 74

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.