2019 CADILLAC XT4 ECU

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
354 ONSTAR
OnStar
OnStar Overview
OnStar Overview . . . . . . . . . . . . . . . . . . 354
OnStar Services
Emergency . . . . . . . . . . . . . . . . . . . . . . . . 355
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
OnStar Additional Information
OnStar AdditionalInformation . . . . . . . . . . . . . . . . . . . . . 356
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. Press
Qtwice
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 XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
ONSTAR 355
Press=to:
. Open the OnStar app on the
infotainment display. See the
infotainment manual for
information on how to use the
OnStar app.
Or
. Make a call, end a call, or answer
an incoming call.
. Give OnStar Hands-Free Calling
voice commands.
. 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.
With Roadside Assistance, Advisors
can locate a nearby service provider to
help with a flat tire, a battery jump,
or an empty gas tank.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
356 ONSTAR
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
engine 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 be sent. 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
Q
to 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, Roadside Assistance, and
Hands-Free Calling are available on
most vehicles. Not all OnStar services
are available everywhere or on all
vehicles. For more information, a full
description of OnStar services, system
limitations, and OnStar User Terms,
Privacy Statement, and Software
Terms:
. Call 1-888-4ONSTAR
(1-888-466-7827).
. See www.onstar.com (U.S.).
. See www.onstar.ca (Canada).
. Call TTY 1-877-248-2080.
. Press
Qto speak with an Advisor.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
358 ONSTAR
Potential Issues
OnStar cannot perform Remote Door
Unlock or Stolen Vehicle Assistance
after the vehicle has been off
continuously for 10 days without an
ignition cycle. If the vehicle has not
been started for 10 days, OnStar can
contact Roadside Assistance or a
locksmith to help gain access to the
vehicle.
Global Positioning System (GPS)
.Obstruction of the GPS can occur
in a large city with tall buildings;
in parking garages; around
airports; in tunnels and
underpasses; or in an area with
very dense trees. If GPS signals are
not available, the OnStar system
should still operate to call OnStar.
However, OnStar could have
difficulty identifying the exact
location.
. In emergency situations, OnStar
can use the last stored GPS
location to send to emergency
responders. A temporary loss of GPS can cause
loss of the ability to send a
Turn-by-Turn Navigation route. The
Advisor may give a verbal route or
may ask for a call back after the
vehicle is driven into an open area.
Cellular and GPS Antennas
Cellular reception is required for
OnStar to send remote signals to the
vehicle. Do not place items over or
near the antenna to prevent blocking
cellular and GPS signal reception.
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 0250. 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
OnStar Hands-Free Calling name tags,
saved navigation destinations,
or pre-set radio stations. Neither
OnStar nor GM is responsible for any
affected or erased data or settings.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
360 ONSTAR
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Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
CONNECTED SERVICES 363
Get My Destination1. Press
=. System responds:
“OnStar ready,” then a tone.
2. Say “Get my destination.” System
responds with the address and
distance to the destination, then
responds with “OnStar ready,”
then a tone.
Send Destination to Vehicle
Directions can be sent to the vehicle’s
navigation screen, if equipped.
Press
Q, then ask the Advisor to
download directions to the vehicle’s
navigation system, 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, numbers,
and symbols 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).
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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
366 INDEX
IndexA
About Driving the Vehicle . . . . . . . . . . . . . 3
Accessories and Modifications . . . . . 254
Accessory Power . . . . . . . . . . . . . . . . . . . . 189
Active Fuel Management . . . . . . . . . . . 192
Adaptive Cruise Control . . . . . . . . . . . . 209
Add-On Electrical Equipment . . . . . . 250
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . 64
Air Cleaner/Filter, Engine . . . . . . . . . . 261
Air Conditioning . . . . . . . . . . . . . . . . . . . . 166
Air Filter
Life System . . . . . . . . . . . . . . . . . . . . . . . . 260
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . . . . . 171
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
How Does an Airbag Restrain? . . . . . 85
Passenger Sensing System . . . . . . . . . 87
What Makes an Airbag Inflate? . . . . 85
What Will You See after anAirbag Inflates? . . . . . . . . . . . . . . . . . . . 85 Airbag System (cont'd)
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Where Are the Airbags? . . . . . . . . . . . . 82
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Passenger Status Indicator . . . . . . . 132
Readiness Light . . . . . . . . . . . . . . . . . . . 131
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
System Check . . . . . . . . . . . . . . . . . . . . . . . 81
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . 50
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . 232
Side Blind Zone (SBZA) . . . . . . . . . . 232
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 282
All-Wheel Drive . . . . . . . . . . . . . . . .200, 270
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Antilock Brake System (ABS) . . . . . . 200 Warning Light . . . . . . . . . . . . . . . . . . . . 136
Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Armrest Storage . . . . . . . . . . . . . . . . . . . . . 112
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Assistance Systems for Driving . . . . 226

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12017481) - 2019 - CRC - 11/5/18
INDEX 367
Assistance Systems for Parkingand Backing . . . . . . . . . . . . . . . . . . . . . . . 219
Auto Stop Stop/Start System . . . . . . . . . . . . . . . . 187
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . . 54
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Forward Braking . . . . . . . . . . . . . . . . . . 228
Headlamp System . . . . . . . . . . . . . . . . 160
Transmission . . . . . . . . . . . . . . . . . . . . . . 194
Transmission Fluid . . . . . . . . . . . . . . . 260
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . 198
B
BatteryExterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Power Protection . . . . . . . . . . . . . . . . . . 164
Battery - North America . . . . . .269, 309
Blade Replacement, Wiper . . . . . . . . . 271
Brake Parking, Electric . . . . . . . . . . . . . . . . . . 201
System Warning Light . . . . . . . . . . . . 135
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268 Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Automatic Forward . . . . . . . . . . . . . . . 228
Braking System Front Pedestrian (FPB) . . . . . . . . . . . 230
Break-In, New Vehicle . . . . . . . . . . . . . . 184
Bulb Replacement Back-up Lamps . . . . . . . . . . . . . . . . . . . 274
Front Turn Signal Lamps . . . . . . . . 273
Headlamp Aiming . . . . . . . . . . . . . . . . 273
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . 273
Buying New Tires . . . . . . . . . . . . . . . . . . . 297
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 121
California
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 254
California Proposition 65 Warning . . . . . . . . . . . . .253, 269, 309, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . 2
Capacities and Specifications . . . . . . 338
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . . . . . 193
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Winter Driving . . . . . . . . . . . . . . . . . . . . 178
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Cargo (cont'd)
Tie-Downs . . . . . . . . . . . . . . . . . . . . . . . . . 114
Caution, Danger, and Warning . . . . . . . . 3
Center Console Storage . . . . . . . . . . . . . 112
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 301
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Charging System Light . . . . . . . . . . . . . 133
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 133
Child Restraints Infants and Young Children . . . . . . . . 94
Lower Anchors and Tethers forChildren . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Older Children . . . . . . . . . . . . . . . . . . . . . . 93
Securing . . . . . . . . . . . . . . . . . . . . . . 106, 108
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Cigarette Lighter . . . . . . . . . . . . . . . . . . . . 124
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 275
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 315
Interior Care . . . . . . . . . . . . . . . . . . . . . . 319
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . 166
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Cluster, Instrument . . . . . . . . . . . . . . . . . 126
Collision Damage Repair . . . . . . . . . . . 347