Cadillac CT4 2021 User Manual
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Keys, Doors, and Windows . . . . . . . . . . 6
Seats and Restraints . . . . . . . . . . . . . . . 30
Storage . . . . . . . . . . . . . . . . . . . ... . . . . . . . . 78
Instruments and Controls . . . . . . . . . . 81
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Infotainment System . . . . . . . . . . . . . 133
Climate Controls . . . . . . . . . . . . . . . . . . 195
Driving and Operating . . . . . . . . . . . . 201
Vehicle Care . . . . . . . . . . . .. . . . . . . . . . . 302
Service and Maintenance . . . . . . . . . 377
Technical Data . . . . . . . . . . . . . . . . . .. . 392
Customer Information . . . . . . . . . . . . 396
Reporting Safety Defects . . . . . . . . . 406
OnStar ..... . . . . . . . . . . . . . . . . . . . . . . . . . 409
Connected Services . . . . . . . . . . . . . . . 414
Index . . . . . . . . . . . . . . . . . . . . . . . . 417
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 A First Printing
©
2020 General Motors LLC. All Rights Reserved.
CT4
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
2 INTRODUCTION
Using this Manual
To quickly locate information about
the vehicle, use the Index in the back
of the manual. It is an alphabetical
list of what is in the manual and the
page number where it can be found.
Danger, Warning, and Caution
Warning messages found on vehicle
labels and in this manual describe
hazards and what to do to avoid or
reduce them.
Danger
{
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
Warning
{
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means “Do not,”
“Do not do this,” or “Do not let this
happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message, gauge,
or indicator.
M : Shown when the owner’s manual
has additional instructions or
information.
* : Shown when the service manual
has additional instructions or
information.
0 : Shown when there is more
information on another page —
“see page.”
Vehicle Symbol Chart
Here are some additional symbols that
may be found on the vehicle and what
they mean. See the features in this
manual for information.
u : Air Conditioning System
G : Air Conditioning Refrigerant Oil
9 : Airbag Readiness Light
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
INTRODUCTION 3
! : Antilock Brake System (ABS)
$ : Brake System Warning Light
9 : Dispose of Used Components
Properly
P : Do Not Apply High Pressure
Water
B : Engine Coolant Temperature
_ : Flame/Fire Prohibited
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
S : Remote Vehicle Start
> : 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 - 7/13/20
4 INTRODUCTION
Instrument Panel Overview
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
1. Air Vents 0 199.
2. Exterior Lamp Controls 0 125.
Turn Signal Lever. See Turn and
Lane-Change Signals 0 128.
3. Tap Shift Controls (If Equipped).
See Manual Mode (Electronic Shifter)
0 234 or
Manual Mode (Mechanical Shifter)
0 233.
4. Cruise Control 0 247.
Adaptive Cruise Control (Advanced)
0 249 (If Equipped).
Forward Collision Alert (FCA) System
0 281 (If Equipped).
Heated Steering Wheel 0 82 (If
Equipped).
5. Instrument Cluster (Base Level) 0 88
or
Instrument Cluster (Uplevel) 0 90.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) (Base Level) 0 106 or
Driver Information Center (DIC)
(Uplevel) 0 109.
6. Steering Wheel Controls 0 136 (If
Equipped).
7. Windshield Wiper/Washer 0 82.
8. Infotainment. See Overview 0 134.
9. Light Sensor. See Automatic
Headlamp System 0 127.
10. Hazard Warning Flashers 0 128.
11. Dual Automatic Climate Control
System 0 195.
12. Heated and Ventilated Front Seats
0 37 (If Equipped).
13. Lane Keep Assist (LKA) 0 289 (If
Equipped).
14. Traction Control/Electronic Stability
Control 0 238.
Stop/Start Disable Switch. See Stop/
Start System 0 220.
Automatic Vehicle Hold (AVH) 0 238.
MODE Button or
(V-Series Only). See Driver Mode
Control 0 240.
15. Wireless Charging Pad (If
Equipped) (Out of View). See
Wireless Charging 0 85.
16. Park Assist Button. See Assistance
Systems for Parking or Backing
0 274.
« /ª Button
INTRODUCTION 5
17. Shift Lever. See Automatic
Transmission (Mechanical Shifter)
0 226 or
Automatic Transmission (Electronic
Shifter) 0 228.
18. ENGINE START/STOP Button. See
Ignition Positions 0 218.
19. Horn 0 82.
20. Steering Wheel Adjustment 0 82.
21. Head-Up Display (HUD) 0 112 (If
Equipped).
22. Hood Release (Out of View). See
Hood 0 305.
23. Instrument Panel Illumination
Control 0 129.
24. Data Link Connector (DLC) (Out of
View). See Malfunction Indicator
Lamp (Check Engine Light) 0 97.
25. Electric Parking Brake 0 236 (If
Equipped).
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
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 - 7/13/20
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
0 400.
With an active OnStar or connected
service plan, an OnStar Advisor may
remotely unlock the vehicle. See
OnStar Overview 0 409.
Remote Keyless Entry (RKE) System
See Radio Frequency Statement 0 405.
The mechanical key, inside the remote
key, is used for the driver door and
glove box.
If there is a decrease in the remote
key operating range:
.
Check the distance. The remote key
may be too far from the vehicle.
KEYS, DOORS, AND WINDOWS 7
.
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 7.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
8 KEYS, DOORS, AND WINDOWS
programmed to unlock all doors on
the first button press. See Vehicle
Personalization 0 116. 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
system. See Vehicle Alarm System 0 20.
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 0 116.
Pressing
system. See Vehicle Alarm System 0 20.
If equipped with remote folding
mirrors, pressing
may fold the mirrors. See Folding
Mirrors 0 24.
Q may also arm the alarm
Q on the remote key
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
Press and hold
three seconds to remotely open the
windows, if enabled. See Vehicle
Personalization 0 116.
If equipped with remote folding
mirror, pressing
may unfold the mirrors. See Folding
Mirrors 0 24.
S : Press S twice 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
K will disarm the alarm
K for about
K on the remote key
7 for more than
three seconds to sound the panic
alarm. The horn sounds and the turn
signal lamps flash for 30 seconds,
or until
vehicle is started.
7 is pressed again or the
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 0 116.
If equipped with memory seats,
remote keys 1 and 2 are linked to
seating positions of memory 1 or 2.
See Memory Seats 0 34.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
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. See Folding Mirrors 0 24.
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.
KEYS, DOORS, AND WINDOWS 9
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
and K on 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 0 116.
Q
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
10 KEYS, DOORS, AND WINDOWS
Enabling Keyless Unlocking:
With the vehicle off, press and hold
and K on the remote key at the same
time for approximately four seconds.
The turn signal lamps will flash twice
quickly to indicate access is enabled.
Enabling Keyless Unlocking may also
be configured under Vehicle
Personalization. See Vehicle
Personalization 0 116.
Passive (Walkaway) Locking
The Keyless Access system will lock
the vehicle several seconds after all
doors are closed if the vehicle is off
and at least one remote key has been
removed or none remain in the
vehicle.
If equipped, the fuel door will
also lock.
If other electronic devices interfere
with the remote key signal, the vehicle
may not detect the remote key inside
the vehicle. If passive (walkaway)
locking is enabled, the doors may lock
with the remote key inside the vehicle.
Do not leave the remote key in an
unattended vehicle.
To customize the doors to
automatically lock when exiting the
Q
vehicle, see Vehicle Personalization
0 116.
If equipped with remote folding
mirror, passive (walkaway) locking
may fold the mirrors. See Folding
Mirrors 0 24.
Temporary Disable of Passive
(Walkaway) Locking
Temporarily disable passive locking by
pressing and holding
interior door switch with a door open
for at least four seconds, or until three
chimes are heard. Passive (walkaway)
locking will then remain disabled until
the vehicle is turned on.
Remote Key Left In Vehicle Alert
When the vehicle is turned off and a
remote key is left in the vehicle, the
horn will chirp three times after all
doors are closed. To turn on or off see
Vehicle Personalization 0 116.
K on the
Remote Key No Longer In Vehicle
Alert
If the vehicle is on, with a door open,
and then all doors are closed, the
vehicle will check for a remote key
inside. If a remote key is not detected,
the Driver Information Center (DIC)
will display NO KEY FOUND and the
horn will chirp three times.
This occurs only once each time the
vehicle is driven. See Vehicle
Personalization 0 116.
Keyless Trunk Opening
Press the touch pad on the rear of the
trunk above the license plate if the
remote key is within 1 m (3 ft).
Mechanical Key Access
To access a vehicle with a weak
remote key battery, see Door Locks
0 15.
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
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
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 the
rear 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
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.
K or Q
KEYS, DOORS, AND WINDOWS 11
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
POCKET THEN START YOUR
VEHICLE, follow the steps shown
below:
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
12 KEYS, DOORS, AND WINDOWS
1. Place the remote key into the rear
cupholder.
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,
(Continued)
Warning (Continued)
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 - 7/13/20
1. 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.
3. Remove the seal by pulling on the
tab to access the battery.
4. Remove the old battery. Do not use
a metal object.
2. Use the mechanical key blade in
the slot to remove the battery
cover by hand.
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.
KEYS, DOORS, AND WINDOWS 13
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 0 37.
If equipped with a remote start heated
steering wheel, it may come on during
a remote start. See Heated Steering
Wheel 0 82.
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 - 7/13/20
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
0 7.
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
S twice 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.
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 - 7/13/20
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 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
(Continued)
Warning (Continued)
vehicle. Locking the doors can
help prevent this from
happening.
To lock or unlock the doors from
outside the vehicle:
.
Press Q or K on the remote key.
See Remote Keyless Entry (RKE)
System Operation 0 7.
.
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 Q or K on the power door
lock switch.
.
Pull once on the door handle to
unlock the door and again to open
the door.
KEYS, DOORS, AND WINDOWS 15
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
Keyless Entry (RKE) System Operation
0 7.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
16 KEYS, DOORS, AND WINDOWS
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).
3. Slide the cap forward and press the
forward edge to install the cap in
place.
4. Release the door handle.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
5. Check that the cap is secure.
Free-Turning Locks
The door key lock cylinder turns freely
when either the wrong mechanical key
is used, or the correct mechanical key
is not fully inserted. The free-turning
door lock feature prevents the lock
from being forced open. To reset the
lock, turn it to the vertical position
with the correct mechanical key fully
inserted. Remove the mechanical key
and insert it again. If this does not
reset the lock, turn the mechanical
key halfway around in the cylinder
and repeat the reset procedure.
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.
KEYS, DOORS, AND WINDOWS 17
When
Q is 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
Q on the door lock switch again,
or press
feature and lock the doors
immediately.
Delayed locking can be programmed.
See Vehicle Personalization 0 116.
Q on the key, to override this
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).
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
18 KEYS, DOORS, AND WINDOWS
To unlock the doors:
.
Press K on the power door lock
switch.
.
Shift the transmission into P (Park).
Automatic door locking cannot be
disabled. Automatic door unlocking
can be programmed. See Vehicle
Personalization 0 116.
Safety Locks
Lockout Protection
If the vehicle is on or in ACC/
ACCESSORY 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
power door lock switch.
Q on the
With Folding Mirrors
Without Folding Mirrors
The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.
Press
{ v to 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 0 26.
Press
{ v again 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.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
KEYS, DOORS, AND WINDOWS 19
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.
.
Adjust the climate control
system to a setting that brings in
only outside air and set the fan
speed to the highest setting. See
“Climate Control Systems” in the
Index.
(Continued)
Warning (Continued)
.
If the vehicle is equipped with a
power liftgate, disable the power
liftgate function.
See Engine Exhaust 0 225.
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 X twice 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 0 7.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
20 KEYS, DOORS, AND WINDOWS
Emergency Trunk Release
Handle
Caution
Do not use the emergency trunk
release handle as a tie-down or
anchor point when securing items
in the trunk as it could damage the
handle.
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 batter y
is disconnected, the trunk will not
open. If this happens, use the
emergency trunk release handle.
There is a glow-in-the-dark emergency
trunk release handle on the trunk lid.
This handle will glow following
exposure to light. Pull the release
handle to open the trunk from the
inside.
Vehicle Security
This vehicle has theft-deterrent
features; however, they do not make
the vehicle impossible to steal.
Vehicle Alarm System
This vehicle has an anti-theft alarm
system.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
.
Use the Keyless Access system.
.
With a door open, press Q on
the interior of the door.
3. After 30 seconds the alarm system
will arm, and the indicator light
will begin to slowly f lash indicating
the alarm system is operating.
Pressing
Q on the remote key a
second time will bypass the
30-second delay and immediately
arm the alarm system.
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.
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
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 f lash and the horn
K on the
KEYS, DOORS, AND WINDOWS 21
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:
.
Press K on 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 - 7/13/20
22 KEYS, DOORS, AND WINDOWS
How to Detect a Tamper
Condition
If K is pressed on the remote key and
the horn chirps and the lights flash
three times, a previous alarm occurred
while the system was armed.
If the alarm has been activated, a
message will appear on the DIC.
Power Sounder, Inclination
Sensor, and Intrusion Sensor
In addition to the standard
theft-deterrent system features, this
system may also have a power
sounder, inclination sensor, and
intrusion sensor.
The power sounder provides an
audible alarm which is distinct from
the vehicle’s horn. It has its own
power source, and can sound an alarm
if the vehicle’s battery is
compromised.
The inclination sensor can set off the
alarm if it senses movement of the
vehicle, such as when a tire is
removed. Make sure the vehicle's
alarm is not armed prior to any
jacking.
The intrusion sensor monitors the
vehicle interior, and can activate the
alarm if it senses unauthorized entry
into the vehicle's interior. Do not allow
passengers or pets to remain in the
vehicle when the intrusion sensor is
activated.
Before arming the theft-deterrent
system and activating the intrusion
sensor:
.
Make sure all doors and windows
are completely closed.
.
Secure any loose items such as sun
glasses.
.
Make sure there are no obstructions
blocking the sensors in the front
overhead console.
Inclination and Intrusion Sensor
Disable Switch
It is recommended that the intrusion
and inclination sensor be deactivated
if pets are left in the vehicle or the
vehicle is being transported. With the
vehicle turned off, press
front overhead console. The indicator
light will come on momentarily,
indicating that these sensors have
been disabled for the next alarm
system arming cycle.
o in the
Immobilizer
See Radio Frequency Statement 0 405.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
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 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
Operation 0 7.
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
KEYS, DOORS, AND WINDOWS 23
“Programming Remote Keys to the
Vehicle” under Remote Keyless Entry
(RKE) System Operation 0 7.
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 - 7/13/20
24 KEYS, DOORS, AND WINDOWS
Power Mirrors
Memory Mirrors
The vehicle may have memory
mirrors. See Memory Seats 0 34.
Side Blind Zone Alert (SBZA)
The vehicle may have SBZA. See Side
Blind Zone Alert (SBZA) 0 287.
Lane Change Alert (LCA)
The vehicle may have LCA. See Lane
Change Alert (LCA) 0 287.
Folding Mirrors
Power Folding Mirrors
To adjust each mirror:
1. Press
2. Press the arrows on the control pad
3. Adjust each outside mirror so that
4. Press
j or | to select the driver
or passenger side mirror. The
indicator light will illuminate.
to move the mirror in the desired
direction.
a little of the vehicle and the area
behind it can be seen.
j or | again to deselect the
mirror.
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.
If equipped, press g to power fold the
mirrors. Press
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.
g again to unfold.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
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
on the remote key, the mirrors will
fold. If doors are unlocked by
pressing
mirrors will unfold. See Remote
Keyless Entry (RKE) System
Operation 0 7.
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” in Remote Keyless
Entry (RKE) System Operation 0 7.
3. If passive locking is enabled and
doors are locked by that feature,
the mirrors will fold. See “Passive
Locking” in Remote Keyless Entry
(RKE) System Operation 0 7.
I on the remote key, the
H
KEYS, DOORS, AND WINDOWS 25
Heated Mirrors
K : The rear window defogger also
heats the outside mirrors.
See Dual Automatic Climate Control
System 0 195.
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 - 7/13/20
26 KEYS, DOORS, AND WINDOWS
Turn this feature on or off through
vehicle personalization. See Vehicle
Personalization 0 116.
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.
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.
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.
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 Keys 0 6.
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
Power windows work when the
ignition is on, in ACC/ACCESSORY,
or when Retained Accessory Power
(RAP) is active. See Retained Accessory
Power (RAP) 0 222.
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
.
Press { 2 to engage the rear
window lockout feature. The
indicator light is on when engaged.
The rear door safety locks will also
engage.
.
Press { 2 again 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
With Folding Mirrors, Without Folding
This feature stops the rear passenger
window switches from working.
Mirrors Similar
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
KEYS, DOORS, AND WINDOWS 27
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 - 7/13/20
28 KEYS, DOORS, AND WINDOWS
Programming the Power
Windows
Programming may be necessary if the
vehicle battery has been disconnected
or discharged. If the window is unable
to express-up, program each
express-close window:
1. Close all doors.
2. Turn the ignition on or to ACC/
ACCESSORY.
3. Par tially open the window to be
programmed. Then close it and
continue to pull the switch briefly
after the window has fully closed.
4. Open the window and continue to
press the switch briefly after the
window has fully opened.
Remote Window Operation
If equipped, this feature allows all the
windows to be opened remotely.
If enabled in vehicle personalization,
press and hold
for about three seconds. See Vehicle
Personalization 0 116.
K on the remote key
Sun Visors
Pull the sun visor down to block glare.
Detach the sun visor from the center
mount to pivot to the side window
and, if equipped, extend along the rod.
Roof
Sunroof
If equipped, the ignition must be on
or in ACC/ACCESSORY, or Retained
Accessory Power (RAP) must be active
to operate the sunroof. See Ignition
Positions 0 218 and
Retained Accessory Power (RAP) 0 222.
While operating in express, movement
can be stopped by pressing the switch
again.
The sunroof cannot be opened or
closed if the vehicle has an electrical
failure.
1. SLIDE Switch
2. TILT Switch
Sunroof Operation:
.
Press and release D (1) to
express-open to the fully open
position.
.
Pull and release D (1) to
express-close.
.
Press or pull and hold D (1) to
open or close without express.
Release
position.
D (1) at the desired
Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - crc - 7/13/20
Sunroof Vent Operation:
.
Press and release E (2) to vent the
sunroof.
.
Pull and release E (2) to close the
sunroof vent.
This sunroof also has a sunshade,
which must be opened and closed
manually.
Automatic Reversal System
The sunroof, if equipped, has an
automatic reversal system that is only
active when the sunroof is operated in
express-close mode.
If an object is in the path while
express-closing, the reversal system
will detect an object, stop, and open
the sunroof slightly.
If this condition occurs, attempt to
remove the object, then pull and
release the switch to express close.
If the reversal occurs multiple times,
the DIC message OPEN THEN CLOSE
SUNROOF will display, and express is
disabled. To operate sunroof while
express is disabled, the switch must
be either pressed or pulled and held.
KEYS, DOORS, AND WINDOWS 29
Dirt and debris may collect on the
sunroof seal or in the track. This
could cause an issue with sunroof
operation or noise. It could also plug
the water drainage system.
Periodically open the sunroof and
remove any obstacles or loose debris.
Wipe the sunroof seal and roof sealing
area using a clean cloth, mild soap,
and water. Do not remove grease from
the sunroof.
Loading...