2022 CADILLAC CT4 stop start

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
VEHICLE CARE 373
inflation pressure label, you should
determine the proper tire inflation
pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure
telltale when one or more of your tires
is significantly under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them to
the proper pressure. Driving on a
significantly under-inflated tire causes
the tire to overheat and can lead to
tire failure. Under-inflation also
reduces fuel efficiency and tire tread
life, and may affect the vehicle's
handling and stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver's responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the
level to trigger illumination of the
TPMS low tire pressure telltale.Your vehicle has also been equipped
with a TPMS malfunction indicator to
indicate when the system is not
operating properly. The TPMS
malfunction indicator is combined
with the low tire pressure telltale.
When the system detects a
malfunction, the telltale will flash for
approximately one minute and then
remain continuously illuminated. This
sequence will continue upon
subsequent vehicle start-ups as long
as the malfunction exists.
When the malfunction indicator is
illuminated, the system may not be
able to detect or signal low tire
pressure as intended. TPMS
malfunctions may occur for a variety
of reasons, including the installation
of replacement or alternate tires or
wheels on the vehicle that prevent the
TPMS from functioning properly.
Always check the TPMS malfunction
telltale after replacing one or more
tires or wheels on your vehicle to
ensure that the replacement or
alternate tires and wheels allow the
TPMS to continue to function
properly.See
Tire Pressure Monitor Operation
0 373.
See Radio Frequency Statement 0438.
Tire Pressure Monitor
Operation
This vehicle may have a Tire Pressure
Monitor System (TPMS). The TPMS is
designed to warn the driver when a
low tire pressure condition exists.
TPMS sensors are mounted onto each
tire and wheel assembly, excluding the
spare tire and wheel assembly. The
TPMS sensors monitor the air
pressure in the tires and transmit the
tire pressure readings to a receiver
located in the vehicle.
When a low tire pressure condition is
detected, the TPMS illuminates the
low tire pressure warning light located
on the instrument cluster. If the
warning light comes on, stop as soon

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
VEHICLE CARE 375
.The TPMS sensor matching process
was not done or not completed
successfully after rotating the tires.
The malfunction light and the DIC
message should go off after
successfully completing the sensor
matching process. See "TPMS
Sensor Matching Process" later in
this section.
.One or more TPMS sensors are
missing or damaged. The
malfunction light and the DIC
message should go off when the
TPMS sensors are installed and the
sensor matching process is
performed successfully. See your
dealer for service.
.Replacement tires or wheels do not
match the original equipment tires
or wheels. Tires and wheels other
than those recommended could
prevent the TPMS from functioning
properly. SeeBuying New Tires
0 379.
.Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction. If the TPMS is not functioning
properly it cannot detect or signal a
low tire pressure condition. See your
dealer for service if the TPMS
malfunction light and DIC message
come on and stay on.
Tire Fill Alert (If Equipped)
This feature provides visual and
audible alerts outside the vehicle to
help when inflating an underinflated
tire to the recommended cold tire
pressure.
When the low tire pressure warning
light comes on:
1. Park the vehicle in a safe, level place.
2. Set the parking brake firmly.
3. Place the vehicle in P (Park).
4. Add air to the tire that is underinflated. The turn signal lamp
will flash.
When the recommended pressure
is reached, the horn sounds once
and the turn signal lamp will stop
flashing and briefly turn solid. Repeat these steps for all
underinflated tires that have
illuminated the low tire pressure
warning light.
{Warning
Overinflating a tire could cause the
tire to rupture and you or others
could be injured. Do not exceed the
maximum pressure listed on the
tire sidewall. See
Tire Sidewall
Labeling 0366 and
Vehicle Load Limits 0228.
If the tire is overinflated by more than
35 kPa (5 psi), the horn will sound
multiple times and the turn signal
lamp will continue to flash for several
seconds after filling stops. To release
and correct the pressure, while the
turn signal lamp is still flashing,
briefly press the center of the valve
stem. When the recommended
pressure is reached, the horn
sounds once.
If the turn signal lamp does not flash
within 15 seconds after starting to
inflate the tire, the tire fill alert has
not been activated or is not working.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
SERVICE AND MAINTENANCE 415
The following list is intended to
explain the services and conditions to
look for that may indicate services are
required.
Battery
The 12-volt battery supplies power to
start the engine and operate any
additional electrical accessories.
.To avoid break-down or failure to
start the vehicle, maintain a battery
with full cranking power.
.Trained dealer technicians have the
diagnostic equipment to test the
battery and ensure that the
connections and cables are
corrosion-free.
Belts
.Belts may need replacing if they
squeak or show signs of cracking or
splitting.
.Trained dealer technicians have
access to tools and equipment to
inspect the belts and recommend
adjustment or replacement when
necessary. Brakes
Brakes stop the vehicle and are crucial
to safe driving.
.Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
.Trained dealer technicians have
access to tools and equipment to
inspect the brakes and recommend
quality parts engineered for the
vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See Recommended Fluids
and Lubricants 0417 for GM approved
fluids.
.Engine oil and windshield washer
fluid levels should be checked at
every fuel fill.
.Instrument cluster lights may come
on to indicate that fluids may be
low and need to be filled. Hoses
Hoses transport fluids and should be
regularly inspected to ensure that
there are no cracks or leaks. With a
multi-point inspection, your dealer
can inspect the hoses and advise if
replacement is needed.
Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage. The
brake lamps need to be checked
periodically to ensure that they light
when braking.
.With a multi-point inspection, your
dealer can check the lamps and
note any concerns.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
CONNECTED SERVICES 449
Connections
The following services help with
staying connected.
For coverage maps, see
www.onstar.com (U.S.) or
www.onstar.ca (Canada).
Ensuring Security
.Change the default passwords for
the Wi-Fi hotspot and myCadillac
mobile app. Make these passwords
different from each other and use a
combination of letters and numbers
to increase the security.
.Change the default name of the
SSID (Service Set Identifier). This is
your network’s name that is visible
to other wireless devices. Choose a
unique name and avoid family
names or vehicle descriptions.
Wi-Fi Hotspot (If Equipped)
The vehicle may have a built-in Wi-Fi
hotspot that provides access to the
Internet and web content at 4G LTE
speed. Up to seven mobile devices can
be connected. A data plan is required.
Use the in-vehicle controls only when
it is safe to do so. 1. To retrieve Wi-Fi hotspot
information, press
=to open the
OnStar app on the infotainment
display, then select Wi-Fi Hotspot.
On some vehicles, touch Wi-Fi or
Wi-Fi Settings on the screen.
2. The Wi-Fi settings will display the Wi-Fi hotspot name (SSID),
password, and on some vehicles,
the connection type (no Internet
connection, 3G, 4G, 4G LTE), and
signal quality (poor, good,
excellent). The LTE icon shows
connection to Wi-Fi. It is possible
that the icon may not illuminate
even though the vehicle has an
active connection.
3. To change the SSID or password, press
Qor call 1-888-4ONSTAR to
connect with an Advisor. On some
vehicles, the SSID and password
can be changed in the Wi-Fi
Hotspot menu.
After initial set-up, your vehicle’s
Wi-Fi hotspot will connect
automatically to your mobile devices.
Manage data usage by turning Wi-Fi
on or off on your mobile device, by
using the myCadillac mobile app, or by contacting an OnStar Advisor.
On some vehicles, Wi-Fi can also be
managed from the Wi-Fi
Hotspot menu.
MyCadillac Mobile App (If Available)
Download the myCadillac mobile app
to compatible Apple and Android
smartphones. Cadillac users can
access the following services from a
smartphone:
.Remotely start/stop the vehicle,
if factory-equipped.
.Lock/unlock doors, if equipped with
automatic locks.
.Activate the horn and lamps.
.Check the vehicle’s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
.Send destinations to the vehicle.
.Locate the vehicle on a map (U.S.
market only).
.Turn the vehicle's Wi-Fi hotspot on/
off, manage settings, and monitor
data consumption, if equipped.
.Locate a dealer and schedule
service.
.Request Roadside Service.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
452 INDEX
Antilock Brake System (ABS) . . . . . . 253Warning Light . . . . . . . . . . . . . . . . . . . . 102
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . . . . . . . 180
Assistance Systems for Driving . . . . 301
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . 295
Audio
Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . 235
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . 25
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 17
Emergency Braking (AEB) . . . . . . . . 303
Headlamp System . . . . . . . . . . . . . . . . 130
Transmission . . . . . . . . . . . . . . . . 242, 244
Transmission Fluid . . . . . . . . . . . . . . . 334
Vehicle Hold Light . . . . . . . . . . . . . . . . 103
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . 248, 249
Automatic Vehicle Hold (AVH) . . . . 256
Avoiding Untrusted Media
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147B
BatteryExterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Load Management . . . . . . . . . . . . . . . . 134
Power Protection . . . . . . . . . . . . . . . . . . 135
Battery - North America . . . . . .349, 390
Blade Replacement, Wiper . . . . . . . . . 350
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . 175, 176
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . 150
Brake Electric Boost . . . . . . . . . . . . . . . . . . . . . 253
Parking, Electric . . . . . . . . . . . . . . . . . . 254
System Warning Light . . . . . . . . . . . . 101
Brake Pad Life System . . . . . . . . . . . . . . 346
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
Pad Life System . . . . . . . . . . . . . . . . . . . 346
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211 Automatic Emergency (AEB) . . . . . 303
Reverse Automatic . . . . . . . . . . . . . . . . 299
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 305
Break-In, New Vehicle . . . . . . . . . . . . . . 231
Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . 41 Bulb Replacement
Front Turn Signal Lamps . . . . . . . . 353
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . 352
Headlamp Aiming . . . . . . . . . . . . . . . . 352
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . 352
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . . . . . . . 352
Buying New Tires . . . . . . . . . . . . . . . . . . . 379
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 323
California Proposition 65 Warning . . . . . . . . . . . . . . . . . . .349, 390, Back Cover
Camera Rear Vision (RVC) . . . . . . . . . . . . . . . . . 295
Canadian Vehicle Owners . . . . . . . . . . . . . 1
Capacities and Specifications . . . . . . 424
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . . . . . 241
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Winter Driving . . . . . . . . . . . . . . . . . . . . 226
Cargo
Management System . . . . . . . . . . . . . . 81
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
460 INDEX
S
Safety Defects ReportingCanadian Government . . . . . . . . . . . . 438
General Motors . . . . . . . . . . . . . . . . . . . 439
U.S. Government . . . . . . . . . . . . . . . . . . 438
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Safety System Check . . . . . . . . . . . . . . . . 47
Satellite Radio . . . . . . . . . . . . . . . . . . . . . . 146
Scheduling Appointments . . . . . . . . . . 434
Sealant Kit, Tire . . . . . . . . . . . . . . . . . . . . . 384
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Buckle To Drive . . . . . . . . . . . . . . . . . . . . 41
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . 44
Reminders . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Replacing after a Crash . . . . . . . . . . . . 48
Use During Pregnancy . . . . . . . . . . . . . 47
Seats Head Restraints . . . . . . . . . . . . . . . . . . . . 30
Heated and Ventilated Front . . . . . . 37
Lumbar Adjustment, Front . . . . . . . . 33
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Power Adjustment, Front . . . . . . . . . 31
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Seats (cont'd)
Reclining Seatbacks . . . . . . . . . . . . . . . 32
Securing Child Restraints . . . . . . . 73, 75
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Vehicle Alarm . . . . . . . . . . . . . . . . . . . . . . 20
Self-Sealing Tires . . . . . . . . . . . . . . . . . . . 365
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207 Accessories andModifications . . . . . . . . . . . . . . . . . . . . 323
Doing Your Own Work . . . . . . . . . . . 324
Maintenance Records . . . . . . . . . . . . 421
Maintenance, General Information . . . . . . . . . . . . . . . . . . . . . . 407
Parts Identification . . . . . . . . . . . . . . . 423
Scheduling Appointments . . . . . . . . 434
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Services
Special Application . . . . . . . . . . . . . . . 414
Servicing System . . . . . . . . . . . . . . . . . . . . 164
Servicing the Airbag . . . . . . . . . . . . . . . . . 58
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Shifting Into Park . . . . . . . . . . . . . . . . . . . . 238, 239
Out of Park . . . . . . . . . . . . . . . . . . 239, 240 Side Blind Zone Alert (SBZA) . . . . . . 307
Signals, Turn and Lane-Change . . . . 131
Software Updates . . . . . . . . . . . . . . . . . . . 142
Special Application Services . . . . . . . 414
Specifications and Capacities . . . . . . 424
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . 95
StabiliTrak
OFF Light . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . 256
Start Vehicle, Remote . . . . . . . . . . . . . . . 13
Starting the Engine . . . . . . . . . . . . . . . . . 234
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211 Heated Wheel . . . . . . . . . . . . . . . . . . . . . . 83
Wheel Adjustment . . . . . . . . . . . . . . . . . 83
Wheel Controls . . . . . . . . . . . . . . . . . . . . 83
Steering Wheel Controls . . . . . . . . . . . 139
Stop/Start System . . . . . . . . . . . . . . . . . . 235
Storage Areas
Cargo Management System . . . . . . . 81
Center Console . . . . . . . . . . . . . . . . . . . . . 80
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Umbrella . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Storage Compartments . . . . . . . . . . . . . . 79
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . . . . 390
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
Stuck Vehicle . . . . . . . . . . . . . . . . . . . . . . . 227