2023 CADILLAC XT4 warning light

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Driving and Operating 247
Ignition Positions
The vehicle has an electronic
keyless ignition with
pushbutton start.
If the pushbutton start is not
working, the vehicle may be
near a strong radio antenna
signal causing interference to
the Keyless Access system.
See Remote Key Operation
09.
To shift out of P (Park), the
vehicle must be turned on and
the brake pedal must be
applied. Stopping the Engine/OFF
(No Indicator Light) :
When
the vehicle is stopped, press
ENGINE START/STOP once to
turn the engine off.
If the vehicle is in P (Park), the
ignition will turn off, and
Retained Accessory
Power (RAP) will remain active.
See Retained Accessory
Power (RAP) 0253.
If the vehicle is in R (Reverse),
D (Drive) or M (Manual Mode),
the vehicle will shift to
P (Park), the ignition will turn
off, and RAP will remain active.
If the vehicle is in N (Neutral),
the ignition will return to
accessory mode and display
the message SHIFT TO PARK
in the Driver Information
Center (DIC).
When the vehicle is shifted
into P (Park), the ignition will
turn off.
{Warning
Turning off the vehicle while
moving may cause loss of
power assist in the brake
and steering systems and
disable the airbags. While
driving, only shut the vehicle
off in an emergency.
If the vehicle must be shut off
in an emergency: 1. Brake using a firm and steady pressure. Do not
pump the brakes
repeatedly. This may
deplete power assist,
requiring increased brake
pedal force.
2. Shift the vehicle to N (Neutral). This can be
done while the vehicle is
moving. After shifting to
N (Neutral), firmly apply the
brakes and steer the
vehicle to a safe location.
3. Come to a complete stop and shift to P (Park).

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
264 Driving and Operating
replace the compact spare
with a full-size tire as soon as
possible. See Compact Spare
Tire0404.
Brakes
Electric Brake Boost
Vehicles equipped with
electric brake boost have
hydraulic brake circuits that
are electronically controlled
when the brake pedal is
applied during normal
operation. The system
performs routine tests and
turns off within a few minutes
after the vehicle is turned off.
Noise may be heard during
this time. If the brake pedal is
pressed during the tests or
when the electric brake boost
system is off, a noticeable
change in pedal force and
travel may be felt. This is
normal.
Antilock Brake
System (ABS)
The Antilock Brake System
(ABS) helps prevent a braking
skid and maintain steering
while braking hard.
If there is a problem with ABS,
this warning light stays on.
See Antilock Brake System
(ABS) Warning Light 0129.
ABS does not change the time
needed to get a foot on the
brake pedal and does not
always decrease stopping
distance. If you get too close
to the vehicle ahead, there will
not be enough time to apply
the brakes if that vehicle
suddenly slows or stops.
Always leave enough room
ahead to stop, even with ABS.
Using ABS
Do not pump the brakes. Just
hold the brake pedal down
firmly. Hearing and feeling ABS
operate is normal.
Braking in Emergencies
ABS allows steering and
braking at the same time. In
many emergencies, steering
can help even more than
braking.
Electric Parking Brake

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Driving and Operating 265
The Electric Parking Brake
(EPB) can always be applied,
even if the vehicle is off. In
case of insufficient electrical
power, the EPB cannot be
applied or released. To
prevent draining the battery,
avoid unnecessary repeated
cycles of the EPB.
The system has a red parking
brake status light and an
amber service parking brake
warning light. See Electric
Parking Brake Light0129 and
Service Electric Parking Brake
Light 0129. There are also
parking brake-related Driver
Information Center (DIC)
messages.
Before leaving the vehicle,
check the red parking brake
status light to ensure that the
parking brake is applied.
EPB Apply
To apply the EPB:
1. Be sure the vehicle is at a complete stop. 2. Press the EPB switch
momentarily.
The red parking brake status
light will flash and then stay on
once the EPB is fully applied.
If the red parking brake status
light flashes continuously, then
the EPB is only partially
applied or there is a problem
with the EPB. A DIC message
will display. Release the EPB
and try to apply it again. If the
light does not come on,
or keeps flashing, have the
vehicle serviced. Do not drive
the vehicle if the red parking
brake status light is flashing.
See your dealer.
If the amber service parking
brake warning light is on,
press the EPB switch.
Continue to hold the switch
until the red parking brake
status light remains on. If the
amber service parking brake
warning light is on, see your
dealer. If the EPB is applied while the
vehicle is moving, the vehicle
will decelerate as long as the
switch is pressed. If the switch
is pressed until the vehicle
comes to a stop, the EPB will
remain applied.
The vehicle may automatically
apply the EPB in some
situations when the vehicle is
not moving. This is normal, and
is done to periodically check
the correct operation of the
EPB system, or at the request
of other safety functions that
utilize the EPB.
If the EPB fails to apply, block
the rear wheels to prevent
vehicle movement.
EPB Release
To release the EPB:
1. Turn the ignition on or to accessory mode.
2. Apply and hold the brake pedal.
3. Press the EPB switch momentarily.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
266 Driving and Operating
The EPB is released when the
red parking brake status light
is off.
If the amber service parking
brake warning light is on,
release the EPB by pressing
and holding the EPB switch.
Continue to hold the switch
until the red parking brake
status light is off. If either light
stays on after release is
attempted, see your dealer.
Caution
Driving with the parking
brake on can overheat the
brake system and cause
premature wear or damage
to brake system parts. Make
sure that the parking brake
is fully released and the
brake warning light is off
before driving.
If you are towing a trailer and
parking on a hill, see Driving
Characteristics and Towing
Tips 0314.
Automatic EPB Release
The EPB will automatically
release if the vehicle is
running, placed into gear, and
an attempt is made to drive
away. Avoid rapid acceleration
when the EPB is applied, to
preserve parking brake
lining life.
Brake Assist
Brake Assist detects rapid
brake pedal applications due
to emergency braking
situations and provides
additional braking to activate
the Antilock Brake System
(ABS) if the brake pedal is not
pushed hard enough to
activate ABS normally. Minor
noise, brake pedal pulsation,
and/or pedal movement during
this time may occur. Continue
to apply the brake pedal as
the driving situation dictates.
Brake Assist disengages when
the brake pedal is released.
Hill Start Assist (HSA)
{Warning
Do not rely on the HSA
feature. HSA does not
replace the need to pay
attention and drive safely.
You may not hear or feel
alerts or warnings provided
by this system. Failure to
use proper care when
driving may result in injury,
death, or vehicle damage.
See Defensive Driving 0230.
When the vehicle is stopped
on a grade, Hill Start Assist
(HSA) prevents the vehicle
from rolling in an unintended
direction during the transition
from brake pedal release to
accelerator pedal apply. The
brakes release when the
accelerator pedal is applied.
If the accelerator pedal is not
applied within a few minutes,
the Electric Parking Brake will
apply. The brakes may also

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
270 Driving and Operating
Sport Mode modifies steering
efforts, transmission shifting,
and AWD torque, if equipped.
The Performance Algorithm
Liftfoot (PAL) feature is
enabled in Sport Mode. PAL
allows the transmission to
hold the current gear after a
quick release of a heavily
applied accelerator pedal. This
provides greater engine
braking and enhanced vehicle
control.
When PAL is activated, there
may be an additional gear
symbol that appears in the
instrument cluster display. See
Performance Shifting Light
0130.
Off-Road Mode : Use this
mode for off-road recreational
driving. When active, Off–Road
Mode should be used to
improve driving at moderate
speeds, on grass, gravel, dirt,
unpaved roads,
or snow-covered roads. The
accelerator pedal is tuned for off-road use. This mode
modifies pedal mapping, AWD,
ESC, and TCS Performance.
Snow/Ice Mode :
Snow/Ice
Mode improves vehicle
acceleration on snow and ice
covered roads. When active,
Snow/Ice Mode will adjust
acceleration to optimize
traction on slippery surfaces.
This can compromise the
acceleration on dry asphalt.
This feature is not intended
for use when the vehicle is
stuck in sand, mud, ice, snow,
or gravel. If the vehicle
becomes stuck, see If the
Vehicle Is Stuck 0241.
Cruise Control
{
Warning
Cruise control can be
dangerous where you
cannot drive safely at a (Continued)
Warning (Continued)
steady speed. Do not use
cruise control on winding
roads or in heavy traffic.
Cruise control can be
dangerous on slippery roads.
On such roads, fast changes
in tire traction can cause
excessive wheel slip, and
you could lose control. Do
not use cruise control on
slippery roads.
With cruise control, a speed of
about 40 km/h (25 mph) or
more can be maintained
without keeping your foot on
the accelerator. Cruise control
does not work at speeds
below about 40 km/h (25 mph).

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Driving and Operating 281
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. Touch the
Settings icon on the
infotainment home page.
Select“Vehicle” to display the
list of available options and
select ”Alert Type” and
“Adaptive Cruise Go Notifier”
in “Collision/Detection
Systems”.
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
0264.
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
0 143.
{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.
{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 (Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
290 Driving and Operating
behind and 1.2 m (4 ft) in front
of your vehicle that are taller
than 25 cm (10 in).
Different environmental
conditions may affect whether
and how far the Park Assist
system can detect objects.
Keep the sensors clean of
mud, dirt, snow, ice, and slush;
and clean sensors after a car
wash in freezing
temperatures. Sensors that
are not clean may not detect
objects or may cause the
system to alert when not
required.
{Warning
The Park Assist System is
no substitute for careful and
attentive driving. The Park
Assist system does not
detect children, pedestrians,
bicyclists, animals, or objects
located below the bumper or
that are too close or too far
from the vehicle. It is not
available at speeds greater(Continued)
Warning (Continued)
than 9 km/h (6 mph). To
prevent injury, death,
or vehicle damage, even with
Park Assist, always check
the area around the vehicle
and check all mirrors before
moving forward or backing.
How the System Works
The vehicle may have a Park
Assist amphitheatre-like
display on the cluster with
bars that represent the
estimated location of a
detected object and the
vehicle’s distance from the
object. As a detected object
becomes closer, more bars
light up and change color from
yellow to amber to red.
When an object is first
detected in the rear, one beep
will be heard from the rear,
or the driver's seat will pulse
two times, if equipped with
Safety Alert Seat. When an
object is very close, five beeps will sound from the front or
rear (depending on the
object's location), or the
driver's seat will pulse five
times. Beeps for front are
higher pitched than the rear.
Turning the System On
and Off
The Park Assist System can
be turned on or off using the
infotainment system. To view
available settings for this
feature, touch the Settings
icon on the infotainment home
page. Select
“Vehicle”to
display the list of available
options and select “Collision/
Detection Systems”.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 297
Warning (Continued)
apply the brakes. See
Defensive Driving0230.
Keep the RVC, taillamps, and
back-up lamps clean and in
good repair.
Rear Pedestrian Alert can be
set to Off or Alert. To view
available settings from the
infotainment screen, touch
Settings > Vehicle > Collision/
Detection Systems > Rear
Pedestrian Detection.
If equipped, alerts can be set
to beeps or seat pulses. To
view available settings from
the infotainment screen, touch
Settings > Vehicle > Collision/
Detection Systems >
Alert Type.
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
To view available settings for
this feature, touch the
Settings icon on the
infotainment home page.
Select
“Vehicle” to display the
list of available options and
select “Collision/Detection
Systems”.
Assistance Systems
for Driving
If equipped, when driving the
vehicle in a forward gear,
Forward Collision Alert (FCA),
Lane Keep Assist (LKA), Side
Blind Zone Alert (SBZA), Lane
Change Alert (LCA), Automatic
Emergency Braking (AEB),
and/or the Front Pedestrian
Braking (FPB) System can help
to avoid a crash or reduce
crash damage.
Forward Collision
Alert (FCA) System
If equipped, the FCA system
may help to avoid or reduce
the harm caused by front-end
crashes. When approaching a
vehicle ahead too quickly, FCA
provides a red flashing alert
on the windshield and rapidly
beeps or pulses the driver
seat. FCA also lights an amber
visual alert if following another
vehicle much too closely.