parking brake CADILLAC XT4 2023 User Guide

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
236 Driving and Operating
the downhill wheels, which
could cause a downhill slide
or a rollover.
.Loose gravel, muddy spots,
or even wet grass can cause
the tires to slip sideways,
downhill. If the vehicle slips
sideways, it can hit
something and potentially
roll over.
.Hidden obstacles can make
the steepness of the incline
more severe. If a rock is
driven across with the uphill
wheels, or if the downhill
wheels drop into a rut or
depression, the vehicle can
tilt even more.
.If an incline must be driven
across and the vehicle starts
to slide, turn downhill. This
should help straighten out
the vehicle and prevent side
slipping.
If the vehicle stalls on a hill: 1. Apply the brakes to stop the vehicle, and then apply
the parking brake. 2. Shift into P (Park) and then
restart the engine.
.If driving uphill when the
vehicle stalls, shift to
R (Reverse), release the
parking brake, and back
straight down.
.Never try to turn the
vehicle around. If the hill
is steep enough to stall
the vehicle, it is steep
enough to cause it to
roll over.
.If you cannot make it up
the hill, back straight
down the hill.
.Never back down a hill in
N (Neutral) using only
the brake.
.The vehicle can roll
backward quickly and
you could lose control.
.If driving downhill when
the vehicle stalls, shift to
a lower gear, release the
parking brake, and drive
straight down the hill. 3. If the vehicle cannot be
restarted after stalling, set
the parking brake, shift
into P (Park), and turn the
vehicle off.
3.1. Leave the vehicle and seek help.
3.2.Stay clear of the path the vehicle would take
if it rolled downhill.
{Warning
Getting out of the vehicle on
the downhill side when
stopped across an incline is
dangerous. If the vehicle
rolls over, you could be
crushed or killed. Always get
out on the uphill side of the
vehicle and stay well clear of
the rollover path.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
248 Driving and Operating
4. Set the parking brake. SeeElectric Parking Brake
0264. Press ENGINE
START/STOP to turn the
vehicle off.
If the vehicle cannot be pulled
over and must be shut off
while driving, press and hold
ENGINE START/STOP for
longer than two seconds,
or press twice in five seconds.
Accessory Mode (Amber
Indicator Light) : This mode
allows you to use some
electrical accessories when
the engine is off.
With the ignition off, pressing
ENGINE START/STOP once
without the brake pedal
applied will place the ignition
system in accessory mode.
The ignition will switch from
accessory mode to OFF after
10 minutes to prevent battery
rundown. ON/RUN/START (Green
Indicator Light) :
This mode is
for driving and starting. With
the ignition off and the brake
pedal applied, pressing
ENGINE START/STOP once
will place the ignition system in
ON/RUN/START. Once engine
cranking begins, release the
button. Engine cranking will
continue until the engine
starts. The ignition will then
remain on. See Starting the
Engine 0248.
Service Mode
This mode is available to verify
the proper operation of the
malfunction indicator lamp as
may be required for emissions
inspection purposes and for
service and diagnostics. See
Automatic Transmission 0257.
With the vehicle off, and the
brake pedal not applied,
pressing and holding ENGINE
START/STOP for more than
five seconds will place the
vehicle in Service Mode. The
instruments and audio systems will operate as they
do in ON/RUN, but the vehicle
will not be able to be driven.
The engine will not start in
Service Mode. Press ENGINE
START/STOP again to turn
the vehicle off.
Starting the Engine
Place the transmission in the
proper gear, P (Park) or
N (Neutral). To restart the
engine when the vehicle is
already moving, use
N (Neutral).
Caution
Do not try to shift to P (Park)
if the vehicle is moving.
If you do, you could damage
the transmission. Shift to
P (Park) only when the
vehicle is stopped.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
254 Driving and Operating
features will also work when
the vehicle is on or in
accessory mode:
.Infotainment System
.Power Windows (during RAP
this functionality will be lost
when any door is opened)
.Sunroof (during RAP this
functionality will be lost
when any door is opened)
.Auxiliary Power Outlet
.Audio System
.OnStar System
Shifting Into Park
To shift into P (Park):1. Hold the brake pedal down and set the Electric
Parking Brake (EPB). See
Electric Parking Brake
0264.
2. Press the button on top of the shift lever to shift into
P (Park). See Automatic
Transmission 0257.
3. The P indicator on the shift lever will turn red when the
vehicle is in P (Park). If the vehicle is shifted into
P (Park) on a hill, the
Electric Parking Brake
(EPB) may apply
automatically. You may not
be able to release the EPB
using the EPB switch.
It should automatically
release when the vehicle is
shifted out of P (Park).
Leaving the Vehicle with
the Engine Running
{Warning
It can be dangerous to leave
the vehicle with the engine
running. It could overheat
and catch fire.
It is dangerous to get out of
the vehicle if the vehicle is
not in P (Park) with the
Electric Parking Brake (EPB)
set. The vehicle can roll.
Do not leave the vehicle
when the engine is running.
If you have left the engine
(Continued)
Warning (Continued)
running, the vehicle can
move suddenly. You or
others could be injured. To
be sure the vehicle will not
move, even when you are on
fairly level ground, always
set the EPB and shift the
vehicle to P (Park). If you are
towing a trailer, see Driving
Characteristics and Towing
Tips0314.
If you have to leave the vehicle
with the engine running, be
sure the vehicle is in P (Park)
and the EPB is set before you
leave it. See Electric Parking
Brake 0264.
If you are towing a trailer and
parking on a hill, see Driving
Characteristics and Towing
Tips 0314.
Shifting out of Park
This vehicle is equipped with
an electronic transmission.
The shift lock release button is

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Driving and Operating 255
designed to prevent
inadvertent shifting out of
P (Park).
To shift out of P (Park):1. Ensure the engine is running.
2. Apply the brake pedal.
3. Press and hold the shift lock release button.
4. Move the shift lever to the desired position.
5. The P indicator will turn white and the gear
indicator on the shift lever
will turn red when the
vehicle is no longer in
P (Park).
6. After releasing the shift lever, it will return to the
center position.
If the vehicle cannot shift from
P (Park), a Driver Information
Center (DIC) message may be
displayed. Check that the
ignition is on, the engine is
running, the brake pedal is
applied, and the shift lock
release button is pressed when you are attempting to
shift out of P (Park). If all of
these are met but the vehicle
will not shift out of P (Park),
see your dealer for service.
Parking over Things
That Burn
{Warning
Things that can burn could
touch hot exhaust parts
under the vehicle and ignite.
Do not park over papers,
leaves, dry grass, or other
things that can burn.
Active Fuel
Management
This vehicle's engine may be
equipped with Active Fuel
Management, which allows the
engine to operate on either all
of its cylinders, or in reduced
cylinder operation mode,
depending on the driving
conditions.
When less power is required,
such as cruising at a constant
vehicle speed, the system will
operate in reduced cylinder
operation mode, allowing the
vehicle to achieve better fuel
economy. When greater
power demands are required,
such as accelerating from a
stop, passing, or merging onto
a freeway, the system will
maintain full-cylinder
operation.
If the vehicle has an Active
Fuel Management indicator,
see Driver Information Center
(DIC) for more information on
using this display.
Extended Parking
It is best not to park with the
vehicle running. If the vehicle is
left running, be sure it will not
move and there is adequate
ventilation.
See Shifting Into Park
0254
and Engine Exhaust 0256.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Driving and Operating 257
If parking on a hill and pulling a
trailer, see Driving
Characteristics and Towing
Tips0314.
Automatic
Transmission
The shift pattern is displayed
in the top of the shift lever.
The selected gear position will
illuminate red on the shift
lever, while all others will be
displayed in white. If the shift
is not immediate, as in very cold conditions, the indicator
on the shift lever may flash
until it is fully engaged.
The shift lever always starts
from a center position,
represented by an up/down
arrow on the shift pattern.
After releasing the shift lever,
it will return to the center
position.
The transmission does not
operate when the vehicle
is off.
If the vehicle is in accessory
mode, the transmission can be
shifted into P (Park).
If the vehicle is turned off
while at a relatively high
vehicle speed, the
transmission will automatically
shift to N (Neutral). Once the
vehicle is stopped, P (Park) is
automatically selected.
P :
This position locks the
drive wheels. Use P (Park)
when starting the engine to
prevent the vehicle from
moving easily.
{Warning
It is dangerous to get out of
the vehicle if the
transmission is not in
P (Park) with the parking
brake set. The vehicle
can roll.
(Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
258 Driving and Operating
Warning (Continued)
Do not leave the vehicle
when the engine is running.
If the engine has been left
running, the vehicle can
move suddenly. You or
others could be injured.
To be sure the vehicle will
not move, even when on
fairly level ground, always
set the parking brake and
place the transmission into
P (Park). See Shifting Into
Park0254 and
Electric Parking Brake 0264.
This vehicle is equipped with
an electronically controlled
transmission. The shift lock
release button is designed to
prevent inadvertent shifting
out of P (Park) unless the
ignition is on, the brake pedal
is applied, and the shift lock
release button is pressed.
When the vehicle is stopped,
press ENGINE START/STOP
to turn off the vehicle. The
transmission will shift to
P (Park) automatically unless
the vehicle is in N (Neutral),
See “Car Wash Mode”
following. The vehicle will not shift into
P (Park) if it is moving too fast.
Stop the vehicle and shift into
P (Park).
To shift in and out of P (Park),
see Shifting Into Park
0254
and Shifting out of Park 0254.
Service Shift Lever Message
If the message SERVICE
SHIFTER SEE OWNER’S
MANUAL appears in the
Driver Information
Center (DIC), the shift lever
needs service. Have the
vehicle serviced as soon as
possible. If the vehicle is
automatically shifting into
P (Park), check to see if the
P (Park) button on top of the
shift lever is stuck. To operate
the vehicle, hold the shift lever
in the desired gear,
R (Reverse) or D (Drive), until
vehicle speed exceeds
15 km/h (10 mph), then release
the shift lever.
R : Use this gear to back up.

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-
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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-
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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-
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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)