2023 CADILLAC CT5 ECU

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
OnStar 501
OnStar
OnStar Overview
OnStar Overview . . . . . . . . . . 501
OnStar Services
Emergency . . . . . . . . . . . . . . . . . . 502
Security . . . . . . . . . . . . . . . . . . . . . . 503
OnStar Additional
Information
OnStar AdditionalInformation . . . . . . . . . . . . . . . . 503
OnStar Overview
=Voice Command Button
QBlue OnStar Button
>Red Emergency Button
This vehicle may be equipped
with a comprehensive,
in-vehicle system that can
connect to an OnStar Advisor
for Emergency, Security,
Navigation, Connections, and
Diagnostics Services. OnStar
services may require a paid
service plan and data plan.
OnStar requires the vehicle
battery and electrical system,
cellular service, and GPS
satellite signals to be available
and operating. OnStar acts as
a link to existing emergency
service providers. OnStar may
collect information about you and your vehicle, including
location information. See
OnStar User Terms, Privacy
Statement, and Software
Terms for more details
including system limitations at
www.onstar.com (U.S.) or
www.onstar.ca (Canada).
The OnStar system status
light is next to the OnStar
buttons. If the status light is:.Solid Green: System is ready.
.Flashing Green: On a call.
.Red: Indicates a problem.
.Off: System is off. PressQ
twice to speak with an
OnStar Advisor.
Press
Qor call
1-888-4ONSTAR
(1-888-466-7827) to speak to
an Advisor.
Functionality of the Voice
Command button may vary by
vehicle and region.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
502 OnStar
Press=to:
.Open the OnStar app on the
infotainment display.
If equipped, the infotainment
system has OnStar controls
in the embedded OnStar app
on the Home Page. Most
OnStar functions that can be
performed with the buttons
can be done using the app.
To open the app, touch the
OnStar icon on the Home
Page. App updates require a
corresponding service plan.
Features vary by region and
model. Features are subject
to change. For more
information, see
my.cadillac.com/learn or
press
Q.
Or
.Give OnStar Turn-by-Turn
Navigation voice commands.
.Obtain and customize the
Wi-Fi hotspot name or SSID
and password, if equipped. Press
Qto connect to an
Advisor to:
.Verify account information
or update contact
information.
.Get driving directions.
.Receive a Diagnostic check
of the vehicle's key
operating systems.
.Receive Roadside
Assistance.
.Manage Wi-Fi Settings,
if equipped.
Press
>to get a priority
connection to an OnStar
Advisor available 24/7 to:
.Get help for an emergency.
.Be a Good Samaritan or
respond to an AMBER Alert.
.Get assistance in severe
weather or other crisis
situations and find
evacuation routes.
OnStar Services
Emergency
Emergency Services require
an active safety and security
plan. With Automatic Crash
Response, built-in sensors can
automatically alert a specially
trained OnStar Advisor who is
immediately connected in to
the vehicle to help.
Press
>for a priority
connection to an OnStar
Advisor who can contact
emergency service providers,
direct them to your exact
location, and relay important
information.
With OnStar Crisis Assist,
specially trained Advisors are
available 24 hours a day,
7 days a week, to provide a
central point of contact,
assistance, and information
during a crisis.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
OnStar 503
With Roadside Assistance,
Advisors can locate a nearby
service provider to help with a
flat tire, a battery jump, or an
empty gas tank.
Security
If equipped, OnStar provides
these services:
.With Stolen Vehicle
Assistance, OnStar Advisors
can use GPS to pinpoint the
vehicle and help authorities
quickly recover it.
.With Remote Ignition Block,
if equipped, OnStar can
block the vehicle from being
restarted.
.With Stolen Vehicle
Slowdown, if equipped,
OnStar can work with law
enforcement to gradually
slow the vehicle down.
Theft Alarm Notification
If equipped, if the doors are
locked and the vehicle alarm
sounds, a notification by text,
e-mail, or phone call will besent. If the vehicle is stolen, an
OnStar Advisor can work with
authorities to recover the
vehicle.
OnStar Additional
Information
In-Vehicle Audio
Messages
Audio messages may play
important information at the
following times:
.Prior to vehicle purchase.
Press
Qto set up an
account.
.After change in ownership
and at 90 days.
Transferring Service
PressQto request account
transfer eligibility information.
The Advisor can cancel or
change account information.
Selling/Transferring the
Vehicle
Call 1-888-4ONSTAR
(1-888-466-7827) immediately
to terminate your OnStar or
connected services if the
vehicle is disposed of, sold,
transferred, or if the
lease ends.
Reactivation for
Subsequent Owners
PressQand follow the
prompts to speak to an
Advisor as soon as possible.
The Advisor will update vehicle
records and explain OnStar or
connected service options.
How OnStar Service
Works
Automatic Crash Response,
Emergency Services, Crisis
Assist, Stolen Vehicle
Assistance, Remote Services,
and Roadside Assistance are
available on most vehicles. Not
all OnStar services are
available everywhere or on all

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
506 OnStar
Unable to Connect to
OnStar Message
If there is limited cellular
coverage or the cellular
network has reached
maximum capacity, this
message may come on. Press
Qto try the call again or try
again after driving a few miles
into another cellular area.
Vehicle and Power Issues
OnStar services require a
vehicle electrical system,
wireless service, and GPS
satellite technologies to be
available and operating for
features to function properly.
These systems may not
operate if the battery is
discharged or disconnected.
Add-on Electrical
Equipment
The OnStar system is
integrated into the electrical
architecture of the vehicle. Do
not add any electrical equipment. See Add-On
Electrical Equipment
0372.
Added electrical equipment
may interfere with the
operation of the OnStar
system and cause it to not
operate.
Vehicle Software Updates
OnStar or GM may remotely
deliver software updates or
changes to the vehicle without
further notice or consent.
These updates or changes
may enhance or maintain
safety, security, or the
operation of the vehicle or the
vehicle systems. Software
updates or changes may
affect or erase data or
settings that are stored in the
vehicle, such as saved
navigation destinations or
pre-set radio stations. Neither
OnStar nor GM is responsible
for any affected or erased
data or settings. These
updates or changes may also
collect personal information.
Such collection is described in the OnStar privacy statement
or separately disclosed at the
time of installation. These
updates or changes may also
cause a system to
automatically communicate
with GM servers to collect
information about vehicle
system status, identify
whether updates or changes
are available, or deliver
updates or changes. An active
OnStar agreement constitutes
consent to these software
updates or changes and
agreement that either OnStar
or GM may remotely deliver
them to the vehicle.
Privacy
The complete OnStar Privacy
Statement may be found at
www.onstar.com (U.S.),
or www.onstar.ca (Canada).
We recommend that you
review it. If you have any
questions, call
1-888-4ONSTAR
(1-888-466-7827) or press
Q
to speak with an Advisor.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Connected Services 509
if equipped. After the call
ends, the navigation screen
will provide prompts to begin
driving directions. Routes that
are sent to the navigation
screen can only be canceled
through the navigation
system.
See www.onstar.com (U.S.) or
www.onstar.ca (Canada).
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 the
network 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

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/11/22
INDEX 511
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . 374
Accessory Power . . . . . . . . . . . .273
Active Fuel Management . . . . . . . . . . 275
Rev Match . . . . . . . . . . . . . . . . . . . 286
Adaptive Cruise Control . . . . . . . . . . . . . . 305
Add-On Electrical
Equipment . . . . . . . . . . . . . . . . . . . .372
Additional OnStar Information . . . . . . . 503
Adjustments
Lumbar, Front Seats . . . . . . . 46
Thigh Support . . . . . . . . . . . . . . . . 45
Agreements Trademarks andLicense . . . . . . . . . . . . . . . . . . . . . 223
Air Cleaner/Filter, Engine . . . . 389
Conditioning . . . . . . . . . . . . . . . . 233
Filter Life System . . . . . . . . . 389
Filter, PassengerCompartment . . . . . . . . . . . . . 239
Vents . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Airbag System . . . . . . . . . . . . . . . . . 65 Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Airbag System (cont'd)
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 70
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . . . 72
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 70
What Will You See after an Airbag Inflates? . . . . . . . . . 71
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 69
Where Are the
Airbags? . . . . . . . . . . . . . . . . . . . . . . 67
Airbags Adding Equipment tothe Vehicle . . . . . . . . . . . . . . . . . . . 77
Passenger Status Indicator . . . . . . . . . . . . . . . . . . . . . 124
Readiness Light . . . . . . . . . . . . . 123
Replacing System Parts after a Crash . . . . . . . 78
Servicing Airbag-Equipped
Vehicles . . . . . . . . . . . . . . . . . . . . . . 77
Alarm Vehicle Security . . . . . . . . . . . . . 28
Alert Lane Change . . . . . . . . . . . . . . . 353

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/11/22
INDEX 513
C
CalibrationCompass . . . . . . . . . . . . . . . . . . . . . . 107
California Perchlorate Materials
Requirements . . . . . . . . . . . . . 374
California Proposition 65 Warning . . . . . . . . . . . . . . . . 1, 452
Camera Rear Vision (RVC) . . . . . . . . . 336
Canadian Vehicle Owners . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . 482
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . 276
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Winter Driving . . . . . . . . . . . . . . 259
Cargo Tie-Downs . . . . . . . . . . . . . . . . . . . . 102
Caution, Danger, and Warning . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Center Console Storage . . . . . . . . . . . . . . . . . . . . . . . 101
Chains, Tire . . . . . . . . . . . . . . . . . . . 442
Charging
System Light . . . . . . . . . . . . . . . . 124
Wireless . . . . . . . . . . . . . . . . . . . . . . . 109 Check Engine Light
(Malfunction Indicator) . . . . 125
Child Restraints Infants and YoungChildren . . . . . . . . . . . . . . . . . . . . . . . . 81
Lower Anchors and Tethers for Children . . . . . . 87
Older Children . . . . . . . . . . . . . . . . 79
Securing . . . . . . . . . . . . . . . . . . 94, 96
Systems . . . . . . . . . . . . . . . . . . . . . . . . 83
Child Safety Locks . . . . . . . . . . . . 22
Circuit Breakers . . . . . . . . . . . . . . .411
Cleaning
Exterior Care . . . . . . . . . . . . . . . 457
Interior Care . . . . . . . . . . . . . . . . 463
Climate Control Systems
Dual Automatic . . . . . . . . . . . . . 233
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Cluster, Instrument . . . . . 113, 115
Clutch, Hydraulic . . . . . . . . . . . . 388
Collision Damage Repair . . . . . . . . . . . . . . . . . . . . . . . . . 493
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 100
Compass . . . . . . . . . . . . . . . . . . . . . . . . 107
Competitive
Driving Mode . . . . . . . . . . . . . . . . 299
Composite Materials . . . . . . . 266 Compressor Kit, Tire
Sealant . . . . . . . . . . . . . . . . . . . . . . . . 444
Connected Services Connections . . . . . . . . . . . . . . . . 509
Diagnostics . . . . . . . . . . . . . . . . . . . 510
Navigation . . . . . . . . . . . . . . . . . . . 508
Connections
Connected Services . . . . . . 509
Control Traction andElectronic Stability . . . . . . . 291
Control of a Vehicle . . . . . . . . 243
Controls Steering Wheel . . . . . . . . . . . . . 165
Convex Mirrors . . . . . . . . . . . . . . . . 32
Coolant EngineTemperature
Gauge . . . . . . . . . . . . . . . . . . 121, 122
Engine Temperature Warning Light . . . . . . . . . . . . . . 131
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . 233
Cooling System . . . . . . . . . . . . . . 392
Cornering Lamps . . . . . . . . . . . . . 156
Courtesy Lamps . . . . . . . . . . . . . . 157
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . 492

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/11/22
514 INDEX
Coverage Explanations . . . . . 193
Cruise Control . . . . . . . . . . . . . . . . 302Adaptive . . . . . . . . . . . . . . . . . . . . . 305
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Super . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Cupholders . . . . . . . . . . . . . . . . . . . . .100
Customer Assistance Offices . . . . . . . . . . . . . . . . . . . . . . . . 487
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . . 488
Customer Information
Publications OrderingInformation . . . . . . . . . . . . . . . . 496
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . 485
Cybersecurity . . . . . . . . . . . . . . . . 499
D
Damage Repair,
Collision . . . . . . . . . . . . . . . . . . . . . . . 493
Danger, Warning, and
Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Dashboard . . . . . . . . . . . . . . . . . . . . . . . . . 5
Data Collection Infotainment System . . . . . 500
OnStar . . . . . . . . . . . . . . . . . . . . . . . . 500
Data Recorder Performance . . . . . . . . . . . . . . . . 200 Data Recorders, Event . . . . 499
Database Coverage
Explanations . . . . . . . . . . . . . . . . . 193
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . 154
Defensive Driving . . . . . . . . . . . . 242
Delayed Locking . . . . . . . . . . . . . . . . 21
Destination . . . . . . . . . . . . . . . . . . . . . 184
Diagnostics Connected Services . . . . . . . 510
Differential,
Limited-Slip . . . . . . . . . . . . . . . . . . 302
Disabled Vehicle Transporting . . . . . . . . . . . . . . . . 455
Distracted Driving . . . . . . . . . . . 242
Dome Lamps . . . . . . . . . . . . . . . . . . . 157
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . 136
Delayed Locking . . . . . . . . . . . . . . 21
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Power Locks . . . . . . . . . . . . . . . . . . . 21
Drive Belt Routing, Engine . . . . . . . . . . . . . . . . . . . . . . . . . 484
Drive Systems All-Wheel Drive . . . . . . 287, 406
Driver Assistance Systems . . . . . . 334 Driver (cont'd)
Information
Center (DIC) . . . . . . . . . . 136, 139
Mode Control . . . . . . . . . . . . . . . 293
Mode Control Light . . . . . . . . 132
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Driving
Assistance Systems . . . . . . 346
Better Fuel Economy . . . . . . 241
Characteristics andTowing Tips . . . . . . . . . . . . . . . 365
Competitive . . . . . . . . . . . . . . . . . 299
Defensive . . . . . . . . . . . . . . . . . . . . 242
Distracted . . . . . . . . . . . . . . . . . . . 242
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . 258
If the Vehicle is Stuck . . . . . 261
Impaired . . . . . . . . . . . . . . . . . . . . . . 243
Loss of Control . . . . . . . . . . . . 245
Off-Road Recovery . . . . . . . 245
Track Events and Competitive . . . . . . . . . . . . . . . 246
Vehicle Load Limits . . . . . . . . 261
Wet Roads . . . . . . . . . . . . . . . . . . . 257
Winter . . . . . . . . . . . . . . . . . . . . . . . . 259
Dual
Automatic ClimateControl System . . . . . . . . . . . 233