2022 CADILLAC XT4 turn signal

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 12/17/21
316 VEHICLE CARE
FusesUsage
F10 BCM 2 SS –Body
Control Module 2
(Stop/Start) –Interior
Lamps Control Signal,
Door Handle Puddle
Lamp (LED), Left
Cornering Lamp, Right
Cornering Lamp,
Interior Lamps Control
Signal, Backup Lamp
Supply Voltage, License
Plate Lamp Control
Signal, Rear Closure
Cargo Lamp Control
Signal, Center High
Mounted Stop Lamp
LED Lamp Control
Signal
F11 –
F12 –
F13 –
F14 –
F15 TCM SS –Transmission
Control Module (Stop/
Start)
F16 AMP –Amplifier Fuses
Usage
F17 –
F18 VPM –Video
Processing Module
–
F19 PWR STR COL –Power
Steering Column
–
F20 BCM 6 –Body Control
Module 6 –LED
Backlight Control,
Interior Lighting
Inadvertent Load
Control Signal, Fuel
Door Lock Control
Signal, LED Backlight
Control Signal Fuses
Usage
F21 BCM 4 –Body Control
Module 4 –LED
Headlamp Low Beam
Left Control Signal,
Right Front Side
Marker and Auxiliary
Park, Right Rear Tail/
Side Marker Control
Signal, Left Rear Stop
Lamp Control Signal,
Left Rear Stop/Turn
Lamp Control Signal,
Right DRL Control
Signal
F22 BCM 7 –Body Control
Module 7 –Right Rear
Stop Lamp Control
Signal, Right Rear Stop/
Turn Lamp Control
Signal, Left Front Turn
Lamp Control Signal,
Right Rear Turn
Control Signal
F23 ESCL –Not Used
F24 Airbag
F25 DLC –Data Link
Connector

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 12/17/21
VEHICLE CARE 317
FusesUsage
F26 –
F27 –
F28 –
F29 BCM 8 –Body Control
Module 8 –Internal
Driver/Fuel Door
Unlock Relay Control
Signal, Internal
Non-Driver Door Lock
Relay Control Signal,
Internal All Door
Unlock Relay Control
Signal
F30 OVERHD CNSL –
Overhead Console
F31 STR/WHL/CNTRL –
Steering Wheel
Controls
F32 –
F33 HVAC –Heating
Ventilation and Air
Conditioning Control
Module
F34 CGM –Central Gateway
Module Fuses
Usage
F35 HEATED SW –Heated
Seat Switch/Hazard
Switch
–
F36 Wireless Charger Module/USB
Charge Port
F37 APO FRT –Not Used
F38 OnStar
F39 Displays –Shifter
Interface Board/Center
Stack/Head Up Display/
Instrument Panel
Cluster/HVAC Display
F40 OBS DET –Long Range
Radar Sensor/
Ultrasonic Park Assist
Module/Camera
Module/External Object
Calculating Module/
Side Blind Zone Alert
Modules/Front Camera
Module Fuses
Usage
F41 BCM 1 SS –Body
Control Module 1
(Stop/Start) –LED
Indicator Lighting
Control, Accessory LED
Control, Run-Start LED
Control, Ambient
Lighting LED Control 2,
Liftgate Latch Motor
Control Signal, Rear
Wiper Control Signal,
High Beam Lamp
Control (Direct Drive),
Rear Fog LED Lamp
Control Signal,
Windshield Washer
Pump Motor Control
Signal, Run/Crank
Relay Control Signal,
ECM/TCM ACC
Wakeup Control Signal,
Left Rear Turn Control
Signal, Rear Wiper
Wash Pump Control
Signal, Brake Pedal
Apply Signal
F42 RDO –Radio

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 12/17/21
328 VEHICLE CARE
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.
SeeTire Pressure Monitor Operation
0 328.
See Radio Frequency Statement 0393.
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 on the
instrument cluster. If the warning
light comes on, stop as soon as
possible and inflate the tires to the
recommended pressure shown on the
Tire and Loading Information label.
See
Vehicle Load Limits 0214.
A message to check the pressure in a
specific tire displays in the Driver
Information Center (DIC). The low tire
pressure warning light and the DIC
warning message come on at each
ignition cycle until the tires are inflated to the correct inflation
pressure. Using the DIC, tire pressure
levels can be viewed. For additional
information and details about the DIC
operation and displays see
Driver
Information Center (DIC) 0115.
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven. This
could be an early indicator that the air
pressure is getting low and needs to
be inflated to the proper pressure.
A Tire and Loading Information label,
attached to your vehicle, shows the
size of the original equipment tires
and the correct inflation pressure for
the tires when they are cold. See
Vehicle Load Limits 0214, for an
example of the Tire and Loading
Information label and its location.
Also see Tire Pressure 0325.
The TPMS can warn about a low tire
pressure condition but it does not
replace normal tire maintenance. See
Tire Inspection 0331, Tire Rotation
0 332 and
Tires 0318.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 12/17/21
330 VEHICLE CARE
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 0320 and
Vehicle Load Limits 0214. 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.
If the hazard warning flashers are on,
the tire fill alert visual feedback will
not work properly.
The TPMS will not activate the tire fill
alert properly under the following
conditions:
.There is interference from an
external device or transmitter.
.The air pressure from the inflation
device is not sufficient to inflate
the tire.
.There is a malfunction in the TPMS.
.There is a malfunction in the horn
or turn signal lamps.
.The identification code of the TPMS
sensor is not registered to the
system.
.The battery of the TPMS sensor
is low.
If the tire fill alert does not operate
due to TPMS interference, move the
vehicle about 1 m (3 ft) back or
forward and try again. If the tire fill
alert feature is not working, use a tire
pressure gauge.
TPMS Sensor Matching Process
Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a new
tire/wheel position after rotating the
vehicle’s tires or replacing one or more
of the TPMS sensors. The TPMS
sensor matching process should also
be performed after replacing a spare
tire with a road tire containing the
TPMS sensor. The malfunction light
and the DIC message should go off at
the next ignition cycle. The sensors
are matched to the tire/wheel
positions, using a TPMS relearn tool,

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 12/17/21
VEHICLE CARE 331
in the following order: driver side
front tire, passenger side front tire,
passenger side rear tire, and driver
side rear. See your dealer for service or
to purchase a relearn tool. A TPMS
relearn tool can also be purchased.
See Tire Pressure Monitor Sensor
Activation Tool at
www.gmtoolsandequipment.com or
call 1-800-GM TOOLS
(1-800-468-6657).
There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes longer,
the matching process stops and must
be restarted.
The TPMS sensor matching process is:1. Set the parking brake.
2. Place the vehicle in Service Mode. See Ignition Positions 0218.
3. Make sure the Tire Pressure info display option is turned on. The
info displays on the DIC can be
turned on and off through the
Options menu. See Driver
Information Center (DIC) 0115. 4. Use the five-way DIC control on the
right side of the steering wheel to
scroll to the Tire Pressure screen
under the DIC info page. See Driver
Information Center (DIC) 0115.
5. Press and hold the thumbwheel in the center of the five-way DIC
control.
The horn sounds twice to signal
the receiver is in relearn mode and
the TIRE LEARNING ACTIVE
message displays on the DIC
screen.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve stem.
Then press the button to activate
the TPMS sensor. A horn chirp
confirms that the sensor
identification code has been
matched to this tire and wheel
position.
8. Proceed to the passenger side front tire, and repeat Step 7.
9. Proceed to the passenger side rear tire, and repeat Step 7. 10. Proceed to the driver side rear tire,
and repeat Step 7. The horn sounds
two times to indicate the sensor
identification code has been
matched to the driver side rear tire,
and the TPMS sensor matching
process is no longer active. The
TIRE LEARNING ACTIVE message
on the DIC display screen goes off.
11. Turn the vehicle off.
12. Set all four tires to the recommended air pressure level as
indicated on the Tire and Loading
Information label.
Tire Inspection
We recommend that the tires,
including the spare tire, if the
vehicle has one, be inspected for
signs of wear or damage at least
once a month.
Replace the tire if:
.The indicators at three or more
places around the tire can
be seen.
.There is cord or fabric showing
through the tire's rubber.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 12/17/21
400 ONSTAR
Services for People with
Disabilities
Advisors provide services to help with
physical disabilities and medical
conditions.
Press
Qto help:
.Locate a gas station with an
attendant to pump gas.
.Find a hotel, restaurant, etc., that
meets accessibility needs.
.Provide directions to the closest
hospital or pharmacy in urgent
situations.
TTY Users
OnStar has the ability to
communicate to deaf, hard-of-hearing,
or speech-impaired customers while in
the vehicle. The available
dealer-installed TTY system can
provide in-vehicle access to all OnStar
services, except Virtual Advisor and
OnStar Turn-by-Turn Navigation.
If equipped, TTY mode can be turned
on or off by touching Settings, then
Apps, and then Phone. When TTYmode is on, phone calls can be made
or received with OnStar using the
infotainment display.
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some
OnStar services. The PIN will need to
be changed the first time when
speaking with an Advisor. To change
the OnStar PIN, contact an OnStar
Advisor by pressing
Qor calling
1-888-4ONSTAR.
Warranty
OnStar equipment may be warranted
as part of the vehicle warranty.
Languages
The vehicle can be programmed to
respond in multiple languages. Press
Qand ask for an Advisor. Advisors
are available in English, Spanish, and
French. Available languages may vary
by country.
Potential Issues
OnStar cannot perform Remote Door
Unlock or Stolen Vehicle Assistance
after the vehicle has been off
continuously for an extended period
of time without an ignition cycle. To
find out the duration of time that
applies for the vehicle, contact an
OnStar Advisor by pressing
Qor
calling 1-888-4ONSTAR. If the vehicle
has not been started for an extended
period of time, OnStar can contact
Roadside Service 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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 12/17/21
ONSTAR 401
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 0284. 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
Qto speak with an Advisor.
Users of wireless communications are
cautioned that the privacy of any
information sent via wireless cellular
communications cannot be assured.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 12/17/21
404 CONNECTED SERVICES
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.