brakes CADILLAC XT4 2022 Owner's Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
246 DRIVING AND OPERATING
When this condition occurs, the
collision alert symbol will flash on the
windshield. Either eight beeps will
sound from the front, or both sides of
the Safety Alert Seat will pulse five
times. See“Collision/Detection
Systems” underVehicle Personalization
0 121.
See Defensive Driving 0205.
Approaching and Following a
Vehicle
The vehicle ahead indicator is in the
instrument cluster and HUD display,
if equipped.
The vehicle ahead indicator only
displays when a vehicle is detected in
your vehicle’s path moving in the
same direction.
If this symbol is not displaying, ACC
will not respond to or brake for
vehicles ahead. ACC automatically slows the vehicle
down and adjusts vehicle speed to
follow the vehicle in front at the
selected follow gap. The vehicle speed
increases or decreases to follow the
vehicle in front of you, but will not
exceed the set speed. It may apply
limited braking, if necessary. When
braking is active, the brake lamps will
come on. The automatic braking may
feel or sound different than if the
brakes were applied manually. This is
normal.
Passing a Vehicle While Using ACC
If the set speed is high enough, and
the left turn signal is used to pass a
vehicle ahead in the selected following
gap, ACC may assist by gradually
accelerating the vehicle prior to the
lane change.
{Warning
When using ACC to pass a vehicle
or perform a lane change, the
following distance to the vehicle
being passed may be reduced. ACC
may not apply sufficient
(Continued)
Warning (Continued)
acceleration or braking when
passing a vehicle or performing a
lane change. Always be ready to
manually accelerate or brake to
complete the pass or lane change.
Stationary or Very Slow-Moving
Objects
{Warning
ACC may not detect and react to
stopped or slow-moving vehicles
ahead of you. For example, the
system may not brake for a vehicle
it has never detected moving. This
can occur in stop-and-go traffic or
when a vehicle suddenly appears
due to a vehicle ahead changing
lanes. Your vehicle may not stop
and could cause a crash. Use
caution when using ACC. Your
complete attention is always
required while driving and you
should be ready to take action and
apply the brakes.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
DRIVING AND OPERATING 247
Irregular Objects Affecting ACC
ACC may have difficulty detecting the
following objects:
.Vehicles with cargo extending from
the back end.
.Non-standard shaped vehicles, such
as vehicle transport, vehicles with a
side car fitted, or horse carriages.
.Objects that are close to the front of
your vehicle.
ACC Automatically Disengages
ACC may automatically disengage and
the driver will need to manually apply
the brakes to slow the vehicle when:
.The sensors are blocked.
.The Traction Control System (TCS)
or StabiliTrak/ESC system has
activated or been disabled.
.There is a fault in the system.
.The radar falsely reports blockage
when driving in a desert or remote
area with no other vehicles or
roadside objects. A DIC message
may display to indicate that ACC is
temporarily unavailable. The ACC indicator will turn white
when ACC is no longer active.
In some cases, when ACC is
temporarily unavailable, regular cruise
control may be used. See
“Switching
Between ACC and Regular Cruise
Control ”in this section. Always
consider driving conditions before
using either cruise control system.
Notification to Resume ACC
ACC will maintain a follow gap behind
a detected vehicle and slow your
vehicle to a stop behind that vehicle.
If the stopped vehicle ahead has
driven away and ACC has not
resumed, the vehicle ahead indicator
will flash as a reminder to check
traffic ahead before proceeding. In
addition, the left and right sides of the
Safety Alert Seat will pulse three
times, or three beeps will sound. See
”Alert Type ”and “Adaptive Cruise Go
Notifier” in“Collision/Detection
Systems” underVehicle Personalization
0 121. When the vehicle ahead drives away,
ACC resumes automatically if the stop
was brief. If necessary, press RES+ or
the accelerator pedal to resume ACC.
If stopped for more than two minutes
or if the driver door is opened and the
driver seat belt is unbuckled, the ACC
automatically applies the Electric
Parking Brake (EPB) to hold the
vehicle. The EPB status light will turn
on. See
Electric Parking Brake 0233.
To release the EPB, press the
accelerator pedal.
A DIC warning message may display
indicating to shift to P (Park) before
exiting the vehicle. See Vehicle
Messages 0120.
{Warning
If ACC has stopped the vehicle, and
if ACC is disengaged, turned off,
or canceled, the vehicle will no
longer be held at a stop. The vehicle
can move. When ACC is holding the
vehicle at a stop, always be
prepared to manually apply the
brakes.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
248 DRIVING AND OPERATING
{Warning
Leaving the vehicle without placing
it in P (Park) can be dangerous. Do
not leave the vehicle while it is
being held at a stop by ACC. Always
place the vehicle in P (Park) and
turn off the ignition before leaving
the vehicle.
ACC Override
If using the accelerator pedal while
ACC is active, the ACC indicator turns
blue on the instrument cluster and in
the HUD (if equipped) to indicate that
automatic braking will not occur. ACC
will resume operation when the
accelerator pedal is not being pressed.
{Warning
The ACC will not automatically
apply the brakes if your foot is
resting on the accelerator pedal.
You could crash into a vehicle
ahead of you. Curves in the Road
{Warning
On curves, ACC may not detect a
vehicle ahead in your lane. You
could be startled if the vehicle
accelerates up to the set speed,
especially when following a vehicle
exiting or entering exit ramps. You
could lose control of the vehicle or
crash. Do not use ACC while driving
on an entrance or exit ramp. Always
be ready to use the brakes if
necessary.
{Warning
On curves, ACC may respond to a
vehicle in another lane, or may not
have time to react to a vehicle in
your lane. You could crash into a
vehicle ahead of you, or lose control
of your vehicle. Give extra attention
in curves and be ready to use the
brakes if necessary. Select an
appropriate speed while driving in
curves.ACC may operate differently in a
sharp curve. It may reduce the vehicle
speed if the curve is too sharp.
When following a vehicle and entering
a curve, ACC may not detect the
vehicle ahead and may accelerate to
the set speed. When this happens, the
vehicle ahead indicator will not
appear.
ACC may detect a vehicle that is not
in your lane and apply the brakes.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
DRIVING AND OPERATING 249
ACC may occasionally provide an alert
and/or braking that is considered
unnecessary. It could respond to
vehicles in different lanes, signs,
guardrails, and other stationary
objects when entering or exiting a
curve. This is normal operation. The
vehicle does not need service.
Other Vehicle Lane Changes
ACC will not detect a vehicle ahead
until it is completely in the lane. The
brakes may need to be manually
applied.
Objects Not Directly in Front of Your
Vehicle
The detection of objects in front of
the vehicle may not be possible if:
.The vehicle or object ahead is not
within your lane.
.The vehicle ahead is shifted, not
centered, or is shifted to one side of
the lane.
Driving in Narrow Lanes
Vehicles in adjacent traffic lanes or
roadside objects may be incorrectly
detected when located along the
roadway.
Do Not Use ACC on Hills
Do not use ACC when driving on steep
hills as ACC may not detect a vehicle
ahead.
Do Not Use ACC When Towing a
Trailer
ACC should not be used when towing
a trailer. Disengaging ACC
There are three ways to
disengage ACC:
.Step lightly on the brake pedal.
.Press*.
.PressJ.
Erasing Speed Memory
The cruise control set speed is erased
from memory if
Jis pressed or if the
ignition is turned off.
Weather Conditions Affecting ACC
System operation may be limited
under snow, heavy rain, or road spray
conditions.
{Warning
Camera visibility may be limited
and the ACC system may not work
properly if the windshield is not
clear. Do not use ACC if moisture is
present on the inside of the
windshield or the windshield
washer is used in cold weather.
Turn on the front defroster and
make sure the windshield is clear
(Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
DRIVING AND OPERATING 251
Warning (Continued)
.Work if the detection sensor is
not cleaned or is covered by ice,
snow, mud, or dirt.
.Work if the detection sensor is
covered up, such as with a
sticker, magnet, or metal plate.
.Work if the detection sensor
viewing zone is interrupted by an
installed accessory, such as a
bike rack, or hitch mounted
cargo carrier.
.Work if the area surrounding the
detection sensor is damaged or
not properly repaired.
Complete attention is always
required while driving, and you
should be ready to take action and
apply the brakes and/or steer the
vehicle to avoid crashes.
Audible or Safety Alert Seat
Some driver assistance features alert
the driver of obstacles by beeping. To
change the volume of the warning
chime, see “Comfort and Convenience ”
under Vehicle Personalization 0121. If equipped with the Safety Alert Seat,
the driver seat cushion may provide a
vibrating pulse alert instead of
beeping. To change this, see
“Collision/Detection Systems”
under
Vehicle Personalization 0121.
Cleaning
Depending on vehicle options, keep
these areas of the vehicle clean to
ensure the best driver assistance
feature performance. Driver
Information Center (DIC) messages
may display when the systems are
unavailable or blocked.
.Front and rear bumpers and the
area below the bumpers
.Front grille and headlamps
.Front camera lens in the front grille
or near the front emblem
.Front side and rear side panels
.Outside of the windshield in front of
the rearview mirror
.Side camera lens on the bottom of
the outside mirrors
.Rear side corner bumpers
.Rear Vision Camera above the
license plate

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
256 DRIVING AND OPERATING
If a service message displays and the
above conditions do not exist, take the
vehicle to your dealer for repairs.
If the Park Assist System does not
activate due to a temporary condition,
a system off message is shown on the
display. This can occur under the
following conditions:
.The driver has disabled the system.
.An object is currently blocking the
rear sensors (for example, bike rack,
tailgate, trailer hitch, etc.). Once the
object is removed, Park Assist will
return to normal operation.
.The bumper is damaged. Take the
vehicle to your dealer for repairs.
.Other conditions, such as vibrations
from a jackhammer or the
compression of air brakes on a very
large truck, are affecting system
performance.
Automatic Parking
Assist (APA)
Automatic Parking Assist (APA)
with Braking
If equipped, under certain conditions
APA with Braking can use sensors
based on sonar technology along the
vehicle’s front, rear and sides to detect
a parking spot, and automatically park
the vehicle with some driver
assistance. The vehicle will
automatically maneuver into a
detected spot moving at or near idle
speed. It does this by automatically
steering and braking while the driver
is responsible for acceleration and
gear shifting as needed. The driver
must always be prepared to apply
braking or additional acceleration, as
needed. A display and audible beeps
help to guide the parking maneuvers.
{Warning
APA may not always detect objects
in the parking space, objects that
are not rigid (e.g. shrubs and
chain-link fences), objects below the(Continued)
Warning (Continued)
bumper, objects high off the ground
(e.g. flatbed trucks), hanging
objects, objects below ground level
(e.g. large potholes), or moving
objects (e.g. pedestrians, cyclists,
vehicles). Always verify that the
parking space is appropriate for
parking a vehicle. APA may not
respond to changes in the parking
space, such as movement of an
adjacent vehicle, or a person or
object entering the parking space.
APA does not detect or avoid traffic
that is behind or alongside of the
vehicle. Always be prepared to stop
the vehicle during the parking
maneuver.
How to Activate Automatic Parking
To activate APA, press the soft-touch
button or hard switch
Ofor the
system to begin searching for a
parking space while driving forward at
no greater than 30 km/h (18 mph). By
default, APA searches for parallel
parking spaces to the right of the
vehicle up to the sensors’ range of

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
DRIVING AND OPERATING 257
1.5 m (5 ft). To search for a parking
space to the left, turn on the left turn
signal or, if available, change the side
selection in the infotainment display.
To switch the parking mode between
parallel and perpendicular press and
hold
Owhile searching for a valid
parking spot or, if available, change
the parking mode in the infotainment
display.
APA cannot park in all empty parking
spots. The parking spot must:
.Be sufficiently large to fit the
vehicle comfortably.
.Have an adjacent vehicle, wall,
or pillar for the system to align to.
After completely passing an eligible
parking spot, a beep sounds and a red
stop symbol is displayed in the driver information center. Generally, APA
selects the nearest empty parking spot
behind the vehicle, but under some
conditions may select a space that is
further back. Slow down and bring the
vehicle to a complete stop to begin.
Follow the displayed instructions.
When instructed to drive in reverse,
shift to R (Reverse) while holding the
brakes. The steering wheel will vibrate
briefly as a reminder to remove hands
from the steering wheel. After the
vibration stops, check your
surroundings and release the brakes
to begin automatic parking. As the
vehicle automatically steers, and
brakes into the parking spot, check
surroundings and continue to apply
acceleration if necessary and shift
gears as needed. Be prepared to stop
to avoid vehicles, pedestrians,
or objects.
A progress arrow displays the status
of the parking maneuver. Once
automatic parking is finished and the
vehicle has come to a full stop, APA
will beep and display a message
indicating parking is complete. Shift
the vehicle to P (Park) and apply the
parking brake
Automatic Parking
Automatic Unparking
How to Cancel Automatic Parking
To cancel automatic parking or
automatic unparking at any time,
press
O. Be prepared to resume full
control of the vehicle. APA holds the

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
258 DRIVING AND OPERATING
vehicle until the parking brake or
brake is applied, or the vehicle is
shifted into P (Park). To start driving
away, press the brakes and shift into
D (Drive).
Certain vehicle conditions and driver
interferences may also cancel
automatic parking:
.The driver manually steers the
vehicle.
.The maximum allowed speed is
exceeded.
.There is a failure with the APA
system.
.Electronic stability control or
antilock brakes are activated.
.The parking brake is applied.
.Driver unbuckles the seat belt and
opens the door.
System Limitations
Automatic Parking Assist has certain
limitations. The system cannot:
.Continue to operate if the maneuver
speed exceeds 5 km/h (3 mph).
.Detect whether a parking space is
legal or restricted.
.Detect pavement markings or lines.
.Park the vehicle closely lined up
with the vehicle next to it,
particularly if the spot is
approached at an angle or if the
parking space is angled.
.Park exactly centered in a very
large spot.
.Always detect short curbs.
.Operate while towing any trailer.
.Function the vehicle is raised or
lowered by air suspension,if
equipped.
When the System Does Not Seem to
Work Properly
If the vehicle does not reverse into the
expected parking space, the system
could be maneuvering the vehicle into
a previously detected space.
Reverse Automatic
Braking (RAB)
Backing Warning and Reverse
Automatic Braking (RAB)
Vehicles with Adaptive Cruise Control
(ACC) have the Backing Warning
System and Reverse Automatic
Braking (RAB) system. When in R (Reverse), Backing Warning alerts of
rear objects at vehicle speeds greater
than 8 km/h (5 mph), and RAB may
automatically brake hard at speeds
between 1–32 km/h (0.5–20 mph).
The Backing Warning System will
beep once from the rear when an
object is first detected, or pulse twice
on both sides of the Safety Alert Seat.
When the system detects a potential
crash, beeps will be heard from the
rear, or five pulses will be felt on both
sides of the Safety Alert Seat. There
may also be a brief, sharp application
of the brakes.
{Warning
The Backing Warning System only
operates at speeds greater than
8 km/h (5 mph). It does not detect
children, pedestrians, bicyclists,
animals, or objects below the
bumper or that are too close or too
far from the vehicle. In some
situations, such as at higher
backing speeds, there may not be
enough time for the short, sharp
application of the vehicle brake
(Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
DRIVING AND OPERATING 259
Warning (Continued)
system to occur. To prevent injury,
death, or vehicle damage, even with
the Backing Warning System,
always check the area around the
vehicle and check all mirrors before
backing.
When the vehicle is in R (Reverse),
if the system detects the vehicle is
backing too fast to avoid a crash with
a detected object behind your vehicle
in your path, it may automatically
brake hard to a stop to help avoid or
reduce the harm caused by a backing
crash.
{Warning
RAB may not avoid many types of
backing crashes. Do not wait for the
automatic braking to apply. This
system is not designed to replace
driver braking and only works in
R (Reverse) when an object is
detected directly behind the vehicle.
It may not brake or stop in time to
avoid a crash. It will not brake for (Continued)
Warning (Continued)
objects when the vehicle is moving
at very low speeds. It does not
detect children, pedestrians,
bicyclists, animals, or objects below
the bumper or that are too close or
too far from the vehicle. To prevent
injury, death, or vehicle damage,
even with RAB, always check the
area around the vehicle before and
while backing.
Pressing the brake pedal after the
vehicle comes to a stop will release
RAB. If the brake pedal is not pressed
soon after the stop, the Electric
Parking Brake (EPB) may be set. When
it is safe, press the accelerator pedal
firmly at any time to override RAB.
{Warning
There may be instances where
unexpected or undesired automatic
braking occurs. If this happens,
either press the brake pedal or
firmly press the accelerator pedal to
release the brakes from the RAB (Continued)
Warning (Continued)
system. Before releasing the brakes,
check the RVC and check the area
around the vehicle to make sure it
is safe to proceed.
Rear Pedestrian Alert
Under certain conditions, this feature
can provide alerts for a pedestrian
within the system’s range directly
behind the vehicle. This feature only
works in R (Reverse) below 12 km/h
(8 mph), and detects pedestrians up to
8 m (26 ft) away during daytime
driving. During nighttime driving,
feature performance is very limited.
Rear Pedestrian Alert Indicator
When a pedestrian is detected within
the system’s range directly behind the
vehicle, this symbol flashes amber on
the infotainment display, along with

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
15440907) - 2022 - CRC - 1/4/22
260 DRIVING AND OPERATING
two beeps from the rear, or if
equipped, two pulses from both sides
of the driver seat. When a pedestrian
is detected close to the vehicle, the
symbol flashes red on the
infotainment display, along with seven
beeps from the rear, or if equipped,
seven pulses from both sides of the
driver seat.
{Warning
Rear Pedestrian Alert does not
automatically brake the vehicle.
It also does not provide an alert
unless it detects a pedestrian, and it
may not detect all pedestrians if:
.The pedestrian is not directly
behind the vehicle, fully visible
to the Rear Vision Camera (RVC),
or standing upright.
.The pedestrian is part of a group.
.The pedestrian is a child.
.Visibility is poor, including
nighttime conditions, fog, rain,
or snow.
.The RVC is blocked by dirt, snow,
or ice.(Continued)
Warning (Continued)
.The RVC, taillamps, or back-up
lamps are not cleaned or in
proper working condition.
.The vehicle is not in R (Reverse).
To help avoid death or injury,
always check for pedestrians
around the vehicle before backing
up. Be ready to take action and
apply the brakes. See Defensive
Driving 0205. Keep the RVC,
taillamps, and back-up lamps clean
and in good repair.
Rear Pedestrian Alert can be set to Off
or Alert. See “Rear Pedestrian
Detection ”in “Collision/Detection
Systems” underVehicle Personalization
0 121. If equipped, alerts can be set to
beeps or seat pulses. See “Alert Type”
in “Collision/Detection Systems” under
Vehicle Personalization 0121.
Rear Cross Traffic Alert
(RCTA) System
If equipped, Rear Cross Traffic Alert
(RCTA) displays a red warning triangle
with a left or right pointing arrow on
the infotainment display to warn of
traffic coming from the left or right.
This system detects objects coming
from up to 20 m (65 ft) from the left
or right side of the vehicle. When an
object is detected, either three beeps
sound from the left or right or three
Safety Alert Seat pulses occur on the
left or right side, depending on the
direction of the detected vehicle.
Driving With a Trailer
Use caution while backing up when
towing a trailer. The RCTA feature is
automatically disabled when a trailer
is attached to the vehicle.
Turning the Features On or Off
RCTA can be turned on or off using
the infotainment system. See
“Collision/Detection Systems” under
Vehicle Personalization 0121.