brakes CADILLAC XT4 2024 Owner's Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
17180837) - 2024 - CRC - 2/28/23
Driving and Operating 199
ACC will not set at a speed less than
25 km/h (15 mph), although it can be
resumed when driving at lower speeds. The
minimum allowable set speed is 25 km/h
(15 mph).
To set ACC while moving:1. Press
J.
2. Get up to the desired speed.
3. Press and release SET–.
4. Remove your foot from the accelerator.
After ACC is set, it may immediately apply
the brakes if a vehicle ahead is detected
closer than the selected following gap.
ACC can also be set while the vehicle is
stopped if ACC is on and the brake pedal is
applied.
The ACC indicator displays on the
instrument cluster and Head-Up Display
(HUD), if equipped. When ACC is turned on,
the indicator will be lit white. When ACC is
engaged, the indicator will turn green. Be mindful of speed limits, surrounding
traffic speeds, and weather conditions when
selecting the set speed.
Resuming a Set Speed
If the ACC is set at a desired speed and then
the brakes are applied, ACC is disengaged
without erasing the set speed from memory.
To begin using ACC again, press RES+ up
briefly.
.If the vehicle is moving more than 5 km/h
(3 mph), it returns to the previous set
speed.
.If the vehicle is stopped with the brake
pedal applied, press RES+ and release the
brake pedal. ACC will hold the vehicle
until RES+ or the accelerator pedal is
pressed.
A green ACC indicator and the set speed
display on the instrument cluster. The
vehicle ahead indicator may be flashing if a
vehicle ahead was present and moved. See
“Approaching and Following a Vehicle” later
in this section.
Once ACC has resumed, if there is no vehicle
ahead, if the vehicle ahead is beyond the
selected following gap, or if the vehicle has
exited a sharp curve, then the vehicle speed
will increase to the set speed. Increasing Speed While ACC is at a Set Speed
If ACC is already activated, do one of the
following:
.Use the accelerator to get to the higher
speed. Briefly press and release SET–
and
release the accelerator pedal. The vehicle
will now cruise at the higher speed.
When the accelerator pedal is pressed,
ACC will not brake because it is
overridden. While overridden, the ACC
indicator will turn blue on the instrument
cluster and heads up display, if equipped.
.Press and hold RES+ until the desired set
speed is displayed, then release it.
.To increase speed in small increments,
press RES+ to the first detent. For each
press, the vehicle goes 1 km/h (1 mph)
faster.
.To increase speed in larger increments,
press RES+ to the second detent. For each
press, the vehicle speed increases to the
next 5 km/h (5 mph) mark on the
speedometer.
The set speed can also be increased while
the vehicle is stopped.
.If stopped with the brake applied, press
RES+ until the desired set speed is
displayed.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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202 Driving and Operating
Alerting the Driver
With Head-Up Display
Without Head-Up Display
If ACC is engaged, driver action may be
required when ACC cannot apply sufficient
braking because of approaching a vehicle
too rapidly.
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. To view a list of available
options, on the infotainment home screen,
select Settings > Vehicle > Collision/
Detection Systems. See
Defensive Driving 0164.
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
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 (Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 203
Warning (Continued)
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.
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. To view a list of
available options, on the infotainment home screen, select Settings > Vehicle > Collision/
Detection Systems > Alert Type or Safety
Alert Seat Vibrations.
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 0187. 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 0118.
{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-
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204 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.
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

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 205
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.
Towing with ACC
If equipped when, towing a trailer, ACC
driving characteristics such as following gap,
acceleration rates and braking rates may be
modified to provide a better towing
experience.
ACC is not recommended with vehicles
equipped with aftermarket trailer brake
controllers. Aftermarket trailer brake
controllers may not activate the trailer
brakes while ACC is engaged. Aftermarket
trailer brake controller manual engagement
will not disable ACC.
ACC may be used when towing a trailer
when trailer attached is within GM-approved
allowable size and weight limits. See
Trailer
Towing 0253.
Use Tow/Haul mode when driving down
steep hills or mountain grades, or when
hauling heavy loads. See Driver Mode
Control 0190.
ACC maintains the set speed when driving
uphill and downhill while towing a trailer.
However, ACC may make a slight change to
the cruise speed while driving on moderate
hills if the combined vehicle and trailer
weight is close to the maximum Gross
Combined Weight Rating (GCWR). See Trailer
Towing 0253. This is normal ACC operation
and is necessary to maintain the set speed.
ACC may disengage if it detects that the
brake temperature exceeds the normal
range.
Disengaging ACC
There are three ways to disengage ACC:
.Step lightly on the brake pedal.
.Press*.
.PressJ.

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Driving and Operating 213
Attention to the Road
{Warning
Super Cruise is a driver assistance system
and cannot accurately detect or predict
all situations. Super Cruise is not a crash
avoidance system. To prevent serious
injury or death, you must supervise the
driving task and monitor the road
conditions. You may need to respond to
traffic events by steering, braking,
or accelerating. SeeDefensive Driving
0 164. Super Cruise also cannot
determine whether you are awake,
asleep, impaired, or properly focused on
safe driving. The vehicle could crash into
other vehicles, drive out of the lane,
or drive off the road. Complete attention
is always required while driving, even
while using Super Cruise. Be prepared to
take over steering or apply the brakes at
any time.
{Warning
To prevent serious injury or death, be
alert and pay special attention when
passing highway exits, entrances, and
crossings with Super Cruise, and be ready
to take control of the vehicle when
necessary. Changes in lane markings
around exits and entrances can
momentarily cause Super Cruise to not
detect the correct lane. If this occurs,
Super Cruise may attempt steering inputs
to bring the vehicle back into the correct
lane and, in rare circumstances, could
over-correct and cause the vehicle to
momentarily cross into a lane next to
your vehicle unless you manually steer to
maintain your lane position. The Driver Attention System (DAS) on the
steering column continually monitors driver
head and eye position to estimate driver
attention to the road. The camera does not
record or share pictures, audio, or video.
Sunglasses, hats, or other types of clothing
that change the shape of the head may
interfere with camera performance. To
improve camera performance, raise or lower
the steering wheel, or change the seat
position.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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224 Driving and Operating
Warning (Continued)
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 view
available settings from the infotainment
screen, touch Settings > Vehicle > Collision/
Detection Systems.
If equipped with the Safety Alert Seat, the
driver seat cushion may provide a vibrating
pulse alert instead of beeping. To view
available settings from the infotainment
screen, touch Settings > Vehicle > Collision/
Detection Systems.
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
Radio Frequency
This vehicle may be equipped with driver
assistance systems that operate using radio
frequency. See Radio Frequency Statement
0 348.
Assistance Systems for Parking or
Backing
If equipped, the Rear Vision Camera (RVC),
Surround Vision, Rear Park Assist (RPA),
Front and Rear Park Assist (FRPA), Enhanced
Automatic Parking Assist (APA), Backing
Warning and Reverse Automatic Braking
(RAB) System, Surround Vision, and Rear
Cross Traffic Alert (RCTA) may help the
driver park or avoid objects. Always check
around the vehicle when parking or backing.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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228 Driving and Operating
Turning the System On and Off
The Park Assist System can be turned on or
off using the infotainment system. To view
available settings from the infotainment
screen, touch Settings > Vehicle > Collision/
Detection Systems.
The
Xbutton is used to turn on or off
the Park Assist, which also turns on or off
the Backing Warning and Reverse Automatic
Braking (RAB) at the same time. When the
system is turned off, a system off message
is shown on the display. This message
disappears after a short period of time.
Turn off Park Assist when towing a trailer to
prevent unwanted beeps and when a bike
rack is attached to ensure proper operation. When the System Does Not Seem to Work
Properly
If a service message displays, check the
following conditions:
.The sensors may not be clean. Keep the
vehicle's front and rear bumpers free of
mud, dirt, snow, ice, and slush. For
cleaning instructions, see
Exterior Care
0 321.
.The Park Assist sensors may be covered
by frost or ice. Frost or ice can form
around and behind the sensors and may
not always be seen; this can occur after
washing the vehicle in cold weather. The
message may not clear until the frost or
ice has melted.
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

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Driving and Operating 229
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 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 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

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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230 Driving and Operating
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 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)
If equipped, 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