ECU CADILLAC XT4 2020 Owner's Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
KEYS, DOORS, AND WINDOWS 7
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . . . . 15
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power Door Locks . . . . . . . . . . . . . . . . . 19
Delayed Locking . . . . . . . . . . . . . . . . . . . 19
Automatic Door Locks . . . . . . . . . . . . 20
Lockout Protection . . . . . . . . . . . . . . . . 20
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . 20
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . 29
Vehicle Alarm System . . . . . . . . . . . . . 29
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . 30
Immobilizer Operation . . . . . . . . . . . . 30
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . 31
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . 31 Folding Mirrors . . . . . . . . . . . . . . . . . . . . 32
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . 32
Automatic Dimming Mirror . . . . . . . 33
Reverse Tilt Mirrors . . . . . . . . . . . . . . . 33
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . 33
Manual Rearview Mirror . . . . . . . . . . 33
Automatic Dimming Rearview
Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Rear Camera Mirror . . . . . . . . . . . . . . . 33
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Power Windows . . . . . . . . . . . . . . . . . . . . 36
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with a
Remote Keyless Entry (RKE)
transmitter 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 RKE transmitter
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 an RKE
transmitter.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
14 KEYS, DOORS, AND WINDOWS
For improved vehicle security, the
RKE transmitter is equipped with a
motion sensor. First, move the RKE
transmitter slightly and try starting
the vehicle. If the vehicle still does not
start and the DIC displays the same
warnings above, follow the steps
shown below.
To start the vehicle:
1. Place the transmitter in the frontcupholder.
2. With the vehicle in P (Park) or N (Neutral), press the brake pedal
and ENGINE START/STOP. Replace the transmitter battery
as soon as possible.
Battery Replacement
{Warning
Never allow children to play with
the RKE transmitter. The
transmitter contains a small
battery, which can be a choking
hazard. If swallowed, 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 RKE
transmitter 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
transmitter. Static from your body
could damage the transmitter.
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 REMOTE KEY.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
KEYS, DOORS, AND WINDOWS 19
3. Slide the cap forward and pressthe forward edge to install the
cap in place.
4. Release the door handle. 5. Check that the cap is secure.
Free-Turning Locks
The door key lock cylinder turns freely
when either the wrong key is used,
or the correct 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 key
fully inserted. Remove the key and
insert it again. If this does not reset
the lock, turn the 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.
Delayed Locking
This feature delays the locking of the
doors until five seconds after all doors
are closed.
Delayed locking can only be turned on
when Open Door Anti-Lockout has
been turned off.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
KEYS, DOORS, AND WINDOWS 23
Caution
Driving with an open and
unsecured liftgate may result in
damage to the power liftgate
components.
The power liftgate switch is on the
driver door. The vehicle must be in
P (Park).
The modes are:
MAX :Opens to maximum height. 3/4 :
Opens to a reduced height that
can be set from 3/4 to fully open. Use
to prevent the liftgate from opening
into overhead obstructions such as a
garage door or roof-mounted cargo.
The liftgate can be manually opened
all the way.
OFF : Opens manually only.
To power open or close the liftgate,
select MAX or 3/4 mode.
. Press
btwice quickly on the RKE
transmitter until the liftgate
moves.
. Press
8on the driver door. The
driver door must either be
unlocked or locked without the
security armed.
. Press the touch pad on the
underside of the liftgate handle
after unlocking all doors. A locked
vehicle can be opened if the RKE
transmitter is within 1 m (3 ft) of
the touch pad.
.Presslon the bottom of the
liftgate next to the pull cup to
close.
Press any liftgate button, or the touch
pad, or
bon the RKE transmitter
while the liftgate is moving to stop it.
Pressing any liftgate button again or
pressing
btwice quickly on the RKE
transmitter restarts the operation in
the reverse direction. Pressing the
touch pad on the liftgate handle will
restart the motion, but only in the
opening direction.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
KEYS, DOORS, AND WINDOWS 29
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.
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 liftgate
is open.
Slow Flash : Alarm system is armed.
Arming the Alarm System
1. Close the liftgate and the hood.
Turn off the vehicle.
2. Lock the vehicle in one of three ways:
.Use the RKE transmitter.
. Use the Keyless Access
system.
. With a door open, press the
inside
Q.
3. After 30 seconds the alarm system will arm, and the
indicator light will begin to
slowly flash indicating the alarm
system is operating. Pressing
Q
on the RKE transmitter a second
time will bypass the 30-second
delay and immediately arm the
alarm system.
The vehicle alarm system will not arm
if the doors are locked with the key. If the driver door is opened without
first unlocking with the RKE
transmitter, 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
Kon the RKE transmitter
during the 10-second pre-alarm, the
alarm will be activated.
The alarm will also be activated if a
passenger door, the liftgate, or the
hood is opened without first
disarming the system. When the
alarm is activated, the turn signals
flash and the horn sounds for about
30 seconds. The alarm system will
then re-arm to monitor for the next
unauthorized event.
Disarming the Alarm System
To disarm the alarm system or turn
off the alarm if it has been activated:
. Press
Kon the RKE transmitter.
. Unlock the vehicle using the
Keyless Access system.
. Start the vehicle.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
30 KEYS, DOORS, AND WINDOWS
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
RKE transmitter or use the Keyless
Access system.
Unlocking the driver door with the key
will not disarm the system or turn off
the alarm.
How to Detect a Tamper
Condition
IfKis pressed and the horn chirps
and the lights flash three times, the
alarm was activated while the alarm
system was armed.
If the alarm system has been
activated, a message will appear on
the DIC.
Immobilizer
See Radio Frequency Statement 0345.
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 on or in
ACC/ACCESSORY and a valid
transmitter 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 RKE
transmitters matched to an
immobilizer control unit in your
vehicle. Only a correctly matched RKE transmitter will start the vehicle.
If the transmitter 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
when the ignition is turned on.
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 RKE transmitter appears to be
undamaged, try another transmitter.
Or, you may try placing the
transmitter in the front cupholder
located in the center console. See
Remote Keyless Entry (RKE) System
Operation
08.
If the ignition mode will not change
with the other transmitter or in the
front cupholder, your vehicle needs
service. If the ignition does change
modes, the first transmitter may be
faulty. See your dealer who can service

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
40 SEATS AND RESTRAINTS
Seats and Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . . . . . . 41
Front Seats
Power Seat Adjustment . . . . . . . . . . . 43
Lumbar Adjustment . . . . . . . . . . . . . . . 43
Reclining Seatbacks . . . . . . . . . . . . . . . 44
Memory Seats . . . . . . . . . . . . . . . . . . . . . . 45
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Rear Seats
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Heated Rear Seats . . . . . . . . . . . . . . . . . 51
Seat Belts
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . 55
Seat Belt Use During
Pregnancy . . . . . . . . . . . . . . . . . . . . . . . . . 58
Seat Belt Extender . . . . . . . . . . . . . . . . . 58
Safety System Check . . . . . . . . . . . . . . 58
Seat Belt Care . . . . . . . . . . . . . . . . . . . . . . 59
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . 59
Airbag System
Airbag System . . . . . . . . . . . . . . . . . . . . . 60
Where Are the Airbags? . . . . . . . . . . . 61
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
What Makes an Airbag Inflate? . . . 64
How Does an Airbag Restrain? . . . 64
What Will You See after an Airbag
Inflates? . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Passenger Sensing System . . . . . . . . 66
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Adding Equipment to the Airbag-Equipped Vehicle . . . . . . . . 70
Airbag System Check . . . . . . . . . . . . . . 71
Replacing Airbag System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . 71
Child Restraints
Older Children . . . . . . . . . . . . . . . . . . . . . 72
Infants and Young Children . . . . . . 73
Child Restraint Systems . . . . . . . . . . . 76
Where to Put the Restraint . . . . . . . 77
Lower Anchors and Tethers forChildren (LATCH System) . . . . . . . 78
Replacing LATCH System Parts After a Crash . . . . . . . . . . . . . . . . . . . . . 86
Securing Child Restraints (With the Seat Belt in the
Rear Seat) . . . . . . . . . . . . . . . . . . . . . . . . 86 Securing Child Restraints (With
the Seat Belt in the
Front Seat) . . . . . . . . . . . . . . . . . . . . . . . 88

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
42 SEATS AND RESTRAINTS
The height of the head restraint can
be adjusted. Pull the head restraint up
to raise it. Try to move the head
restraint to make sure that it is locked
in place.
To lower the head restraint, press the
button, located on the top of the
seatback, and push the head restraint
down. Try to move the head restraint
after the button is released to make
sure that it is locked in place.
Folding the Rear Head Restraint
The head restraint can be folded
rearward to allow for better visibility
when the rear seat is unoccupied.
To fold the head restraint, press the
button on the side of the head
restraint.
The head restraint will fold rearward
automatically.
When an occupant or child restraint is
in the seat, always return the head
restraint to the full upright position.
Pull the head restraint up and forward
until it locks into place. Push and pull
on the head restraint to make sure
that it is locked.
Always adjust the head restraint so
that the top of the restraint is at the
same height as the top of the
occupant's head.
If you are installing a child restraint
in the rear seat, see“Securing a Child
Restraint Designed for the LATCH
System ”under Lower Anchors and
Tethers for Children (LATCH System)
0 78.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
56 SEATS AND RESTRAINTS
after letting the belt go back to
stowed position on the seat,
move the seat rearward or recline
the seat until the shoulder belt
retractor lock releases.
Engaging the child restraint
locking feature in the front
outboard seating position may
affect the passenger sensing
system. SeePassenger Sensing
System 066.
3. Push the latch plate into the
buckle until it clicks. Pull up on the latch plate to
make sure it is secure. If the belt
is not long enough, see
Seat Belt
Extender 058.
Position the release button on
the buckle so that the seat belt
could be quickly unbuckled if
necessary.
4. If equipped with a shoulder belt height adjuster, move it to the
height that is right for you. See
“Shoulder Belt Height Adjuster”
later in this section for
instructions on use and
important safety information.
5. To make the lap part tight, pullup on the shoulder belt.
To unlatch the belt, push the button
on the buckle. The belt should return
to its stowed position.
Always stow the seat belt slowly. If the
seat belt webbing returns quickly to
the stowed position, the retractor may
lock and cannot be pulled out. If this
happens, pull the seat belt straight out
firmly to unlock the webbing, and
then release it. If the webbing is still
locked in the retractor, see your
dealer.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
13527548) - 2020 - CRC - 9/5/19
58 SEATS AND RESTRAINTS
the glovebox or cargo area.
Instructions are included with the
guides.
Additional comfort guides are
available through your dealer for the
rear seating positions. Instructions are
included with the guides.
Seat Belt Use During
Pregnancy
Seat belts work for everyone,
including pregnant women. Like all
occupants, they are more likely to be
seriously injured if they do not wear
seat belts.
A pregnant woman should wear a
lap-shoulder belt, and the lap portion
should be worn as low as possible,
below the rounding, throughout the
pregnancy.
The best way to protect the fetus is to
protect the mother. When a seat belt
is worn properly, it is more likely that
the fetus will not be hurt in a crash.
For pregnant women, as for anyone,
the key to making seat belts effective
is wearing them properly.
Seat Belt Extender
If the vehicle's seat belt will fasten
around you, you should use it.
But if a seat belt is not long enough,
your dealer will order you an extender.
When you go in to order it, take the
heaviest coat you will wear, so the
extender will be long enough for you.
To help avoid personal injury, do not
let someone else use it, and use it
only for the seat it is made to fit. The
extender has been designed for adults.
Never use it for securing child
restraints. For more information onthe proper use and fit of seat belt
extenders see the instruction sheet
that comes with the extender.
Safety System Check
Periodically check the seat belt
reminder, seat belts, buckles, latch
plates, retractors, shoulder belt height
adjusters (if equipped), and seat belt
anchorages to make sure they are all
in working order. Look for any other
loose or damaged seat belt system
parts that might keep a seat belt
system from performing properly. See
your dealer to have it repaired. Torn,
frayed, or twisted seat belts may not
protect you in a crash. Torn or frayed
seat belts can rip apart under impact
forces. If a belt is torn or frayed, have
it replaced immediately. If a belt is
twisted, it may be possible to untwist
by reversing the latch plate on the
webbing. If the twist cannot be
corrected, ask your dealer to fix it.
Make sure the seat belt reminder light
is working. See
Seat Belt Reminders
0 113.