brake system CADILLAC XT5 2019 Owner's Guide

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
204 DRIVING AND OPERATING
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.
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.
If parking on a hill, or if the vehicle is
pulling a trailer, seeDriving
Characteristics and Towing Tips 0240.
Brake Assist
The Brake Assist feature is designed to
assist the driver in stopping or
decreasing vehicle speed in emergency
driving conditions. This feature uses
the stability system hydraulic brake
control module to supplement the
power brake system under conditions
where the driver has quickly and
forcefully applied the brake pedal in
an attempt to quickly stop or slow
down the vehicle. The stability system
hydraulic brake control module
increases brake pressure at each
corner of the vehicle until the ABS
activates. Minor brake pedal pulsation
or pedal movement during this time is
normal and the driver should continue
to apply the brake pedal as the driving
situation dictates. The Brake Assist
feature will automatically disengage
when the brake pedal is released or
brake pedal pressure is quickly
decreased.
Hill Start Assist (HSA)
Hill Start Assist (HSA) will activate
when the vehicle is stopped on a
moderate to steep grade to help
prevent it from rolling in an
unintended direction. After the brake
pedal has been released and before
the accelerator pedal has been
pressed, HSA uses braking pressure to
hold the vehicle stationary. If HSA is
holding the vehicle, a DIC message
displays. HSA will not activate in a
forward drive gear when facing
downhill, or in R (Reverse) when
facing uphill.
Select the duration of the HSA feature
through vehicle personalization. See
”Extended Hill Start Assist ”under
“Comfort and Convenience ”in Vehicle
Personalization 0147. When Standard
Hold is selected, the vehicle is held
stationary for up to two seconds after
the brake pedal is released. When
Extended Hold is selected, the vehicle
is held for an extended period of time
after the brake pedal is released. In
either case, override the hold feature
by pressing the accelerator pedal and
attempting to drive away.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
DRIVING AND OPERATING 205
If Standard Hold is selected, it will
hold the vehicle for two seconds
unless the driver door is opened or
the driver seat belt is unbuckled after
releasing the brake pedal. If Extended
Hold is selected, it will hold the
vehicle for five minutes unless the
driver door is opened and the driver
seat belt is unbuckled prior to
releasing the brake pedal. When
deactivated after five minutes, or if it
is deactivated when the driver seat
belt is unlatched or the driver door is
opened, the Electric Parking Brake will
engage to prevent vehicle movement.Ride Control Systems
Traction Control/Electronic
Stability Control
System Operation
The vehicle has a Traction Control
System (TCS) and StabiliTrak/
Electronic Stability Control (ESC), an
electronic stability control system.
These systems help limit wheel spin
and assist the driver in maintaining
control, especially on slippery road
conditions.
TCS activates if it senses that any of
the drive wheels are spinning or
beginning to lose traction. On an
All-Wheel Drive (AWD) vehicle in
AWD or Sport Mode, the system will
operate if it senses that any of the
wheels are spinning or beginning to
lose traction. When this happens, TCS
applies the brakes to the spinning
wheels and reduces engine power to
limit wheel spin.
StabiliTrak/ESC activates when the
system senses a discrepancy between
the intended path and the directionthe vehicle is actually traveling.
StabiliTrak/ESC selectively applies
braking pressure at any one of the
vehicle's brakes to help steer the
vehicle in the direction which you are
steering.
If cruise control is being used and
traction control or StabiliTrak/ESC
begins to limit wheel spin, cruise
control will disengage. Cruise control
may be turned back on when road
conditions allow. TCS and StabiliTrak/
ESC will automatically turn on when
cruise control is set.
Both systems come on automatically
when the vehicle is started and begins
to move. The systems may be heard or
felt while they are operating or while
performing diagnostic checks. This is
normal and does not mean there is a
problem with the vehicle.
It is recommended to leave both
systems on for normal driving
conditions, but it may be necessary to
turn TCS off if the vehicle gets stuck
in sand, mud, ice, or snow. See
If the
Vehicle Is Stuck 0183 and “Turning
the Systems Off and On ”later in this
section.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
206 DRIVING AND OPERATING
The indicator light for both systems is
in the instrument cluster. This
light will:
.Flash when TCS is limiting
wheel spin
. Flash when StabiliTrak/ESC is
activated
. Turn on and stay on when either
system is not working
If either system fails to turn on or to
activate, a message may display in the
Driver Information Center (DIC), and
dcomes on and stays on to indicate
that the system is inactive and is not
assisting the driver in maintaining
control. The vehicle is safe to drive,
but driving should be adjusted
accordingly. If
dcomes on and stays on:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine.
Drive the vehicle. If
dcomes on and
stays on, the vehicle may need more
time to diagnose the problem. If the
condition persists, see your dealer.
Turning the Systems Off and On
Caution
Do not repeatedly brake or
accelerate heavily when TCS is off.
The vehicle driveline could be
damaged.
To turn off only TCS, press and
release
Y. The Traction Off lighti
displays in the instrument cluster and
a DIC message may display. To turn
TCS on again, press and release
Y.
The Traction Off light
idisplayed in
the instrument cluster will turn off
and a DIC message may display.
If TCS is limiting wheel spin when
Y
is pressed, the system will not turn off
until the wheels stop spinning.
To turn off both TCS and StabiliTrak/
ESC, press and hold
Yuntil the
Traction Off light
iand StabiliTrak/
ESC Off light
gcome on and stay on
in the instrument cluster. A DIC
message may display. To turn TCS and
StabiliTrak/ESC on again, press and
release
Y. The Traction Off lighti

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
208 DRIVING AND OPERATING
Cruise Control
{Warning
Cruise control can be dangerous
where you cannot drive safely at a
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).
If the Traction Control/StabiliTrak/
Electronic Stability Control (ESC)
system begins to limit wheel spin
while using cruise control, the cruise
control automatically disengages. See
Traction Control/Electronic Stability Control
0205. If a collision alert
occurs when cruise control is
activated, cruise control is disengaged.
See Forward Collision Alert (FCA)
System 0226. When road conditions
allow cruise control to be safely used,
it can be turned back on.
Cruise control will disengage if either
TCS or StabiliTrak/ESC is turned off.
If the brakes are applied, cruise
control disengages.
J: Press to turn the system on and
off. A white indicator appears in the
instrument cluster when cruise is
turned on. RES+ :
If there is a set speed in
memory, press briefly to resume to
that speed or press and hold to
accelerate. If the cruise control is
already active, use to increase vehicle
speed. To increase speed by 1 km/h
(1 mph), press RES+ to the first detent.
To increase speed to the next 5 km/h
(5 mph) mark on the speedometer,
press RES+ to the second detent.
SET− :Press briefly to set the speed
and activate cruise control. If the
cruise control is already active, use to
decrease vehicle speed. To decrease
speed by 1 km/h (1 mph), press SET−
to the first detent. To decrease speed
to the next 5 km/h (5 mph) mark on
the speedometer, press SET− to the
second detent.
*: Press to disengage cruise control
without erasing the set speed from
memory.
Setting Cruise Control
If
Jis on when not in use, SET− or
RES+ could get pressed and go into
cruise when not desired. Keep
Joff
when cruise is not being used.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
DRIVING AND OPERATING 209
1. PressJ.
2. Get up to the desired speed.
3. Press and release SET−. The desired set speed briefly appears
in the instrument cluster.
4. Remove your foot from the accelerator.
When the cruise control has been set
to the desired speed, a green cruise
control indicator appears on the
instrument cluster and a cruise set
speed message appears on the
Head-Up Display (HUD), if equipped.
Resuming a Set Speed
If the cruise control is set at a desired
speed and then the brakes are applied
or
*is pressed, the cruise control is
disengaged without erasing the set
speed from memory.
Once the vehicle speed reaches about
40 km/h (25 mph) or more, press RES+
briefly. The vehicle returns to the
previous set speed. Increasing Speed While Using
Cruise Control
If the cruise control system is already
activated:
.
Press and hold RES+ until the
desired speed is reached, then
release it.
. To increase vehicle speed in small
increments, briefly press RES+ to
the first detent. For each press, the
vehicle goes about 1 km/h (1 mph)
faster.
. To increase vehicle speed in larger
increments, briefly 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 speedometer reading can be
displayed in either English or metric
units.
See Instrument Cluster (Uplevel Cluster)
0 124 orInstrument Cluster (Base Level
Cluster) 0122. The increment value
used depends on the units displayed. Reducing Speed While Using Cruise
Control
If the cruise control system is already
activated:
.
Press and hold SET− until the
desired lower speed is reached,
then release it.
. To decrease the vehicle speed in
small increments, briefly press
SET− to the first detent. For each
press, the vehicle goes about
1 km/h (1 mph) slower.
. To decrease the vehicle speed in
larger increments, briefly press
SET− to the second detent. For
each press, the vehicle speed
decreases to the next 5 km/h
(5 mph) mark on the speedometer.
The cruise control system may
automatically brake to slow the
vehicle down.
The speedometer reading can be
displayed in either English or metric
units. See Instrument Cluster (Uplevel
Cluster) 0124 orInstrument Cluster

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
210 DRIVING AND OPERATING
(Base Level Cluster)0122. The
increment value used depends on the
units displayed.
Passing Another Vehicle While
Using Cruise Control
Use the accelerator pedal to increase
the vehicle speed. When you take your
foot off the pedal, the vehicle will slow
down to the previous set cruise speed.
While pressing the accelerator pedal
or shortly following the release to
override cruise, briefly applying SET−
will result in cruise set to the current
vehicle speed.
Using Cruise Control on Hills
How well the cruise control will work
on hills depends upon the vehicle
speed, load, and the steepness of the
hills. When going up steep hills, you
might have to step on the accelerator
pedal to maintain your speed. When
going downhill, the cruise control
system may automatically brake to
slow the vehicle down. Also, you may
have to brake or shift to a lower gear
to keep your speed down. If the brake
pedal is applied, cruise control
disengages. Ending Cruise Control
There are four ways to end cruise
control:
.
Step lightly on the brake pedal.
. Press
*.
. Shift the transmission to
N (Neutral).
. Press
J.
Erasing Speed Memory
The cruise control set speed is erased
from memory if
Jis pressed or if
the ignition is turned off.
Adaptive Cruise Control
If equipped with Adaptive Cruise
Control (ACC), it allows the driver to
select the cruise control set speed and
following gap. Read this entire section
before using this system. The
following gap is the following time
between your vehicle and a vehicle
detected directly ahead in your path,
moving in the same direction. If no
vehicle is detected in your path, ACC works like regular cruise control. ACC
uses camera and radar sensors. See
Radio Frequency Statement
0359.
If a vehicle is detected in your path,
ACC can apply acceleration or limited,
moderate braking to maintain the
selected following gap. To disengage
ACC, apply the brake. If ACC is
controlling your vehicle speed when
the traction control system (TCS) or
StabiliTrak/Electronic Stability Control
(ESC) system activates, the ACC may
automatically disengage. See Traction
Control/Electronic Stability Control
0 205. When road conditions allow
ACC to be safely used, the ACC can be
turned back on.
ACC will not engage if the TCS or
StabiliTrak/ESC system is disabled.
{Warning
ACC has limited braking ability and
may not have time to slow the
vehicle down enough to avoid a
collision with another vehicle you
are following. This can occur when
(Continued)

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
DRIVING AND OPERATING 211
Warning (Continued)
vehicles suddenly slow or stop
ahead, or enter your lane. Also see
“Alerting the Driver”in this section.
Complete attention is always
required while driving and you
should be ready to take action and
apply the brakes. See Defensive
Driving 0178.
{Warning
ACC will not detect or brake for
children, pedestrians, animals,
or other objects.
Do not use ACC when:
. On winding and hilly roads or
when the sensors are blocked
by snow, ice, or dirt. The
system may not detect a
vehicle ahead. Keep the entire
front of the vehicle clean.
(Continued)
Warning (Continued)
.Visibility is low, such as in
fog, rain, or snow conditions.
ACC performance is limited
under these conditions.
. On slippery roads where fast
changes in tire traction can
cause excessive wheel slip.
J:Press to turn the system on or
off. The indicator turns white on the
instrument cluster when ACC is
turned on. RES+ :
Press briefly to resume the
previous set speed or to increase
vehicle speed if ACC is already
activated. To increase speed by 1 km/h
(1 mph), press RES+ to the first detent.
To increase speed to the next 5 km/h
(5 mph) mark on the speedometer,
press RES+ to the second detent.
SET– :Press briefly to set the speed
and activate ACC or to decrease
vehicle speed if ACC is already
activated. To decrease speed by
1 km/h (1 mph), press SET− to the first
detent. To decrease speed to the next
5 km/h (5 mph) mark on the
speedometer, press SET− to the
second detent.
*: Press to disengage ACC without
erasing the selected set speed.
[: Press to select a following gap
time (or distance) setting for ACC of
Far, Medium, or Near.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
214 DRIVING AND OPERATING
The speedometer reading can be
displayed in either English or metric
units.
SeeInstrument Cluster (Uplevel Cluster)
0 124 orInstrument Cluster (Base Level
Cluster) 0122. The increment value
used depends on the units displayed.
Reducing Speed While ACC is at a
Set Speed
If ACC is already activated, do one of
the following:
. Use the brake to get to the desired
lower speed. Release the brake and
press SET– . The vehicle will now
cruise at the lower speed.
. Press and hold SET– until the
desired lower speed is reached,
then release it.
. To decrease the vehicle speed in
smaller increments, press SET− to
the first detent. For each press, the
vehicle goes about 1 km/h (1 mph)
slower.
. To decrease the vehicle speed in
larger increments, press SET− to
the second detent. For each press, the vehicle speed decreases to the
next 5 km/h (5 mph) mark on the
speedometer.
. To decrease speed while the
vehicle is stopped, press SET−
until the desired set speed is
displayed.
The speedometer reading can be
displayed in either English or metric
units.
See Instrument Cluster (Uplevel Cluster)
0 124 orInstrument Cluster (Base Level
Cluster) 0122. The increment value
used depends on the units displayed.
Selecting the Follow Distance Gap
When a slower moving vehicle is
detected ahead within the selected
following gap, ACC will adjust the
vehicle's speed and attempt to
maintain the follow distance gap
selected.
Press
[on the steering wheel to
adjust the following gap. Each press
cycles the gap button through three
settings: Far, Medium, or Near. When pressed, the current gap setting
displays briefly on the instrument
cluster and HUD. The gap setting will
be maintained until it is changed.
Since each gap setting corresponds to
a following time (Far, Medium,
or Near), the following distance will
vary based on vehicle speed. The
faster the vehicle speed, the further
back your vehicle will follow a vehicle
detected ahead. Consider traffic and
weather conditions when selecting the
following gap. The range of selectable
gaps may not be appropriate for all
drivers and driving conditions.
Changing the gap setting
automatically changes the alert timing
sensitivity (Far, Medium, or Near) for
the Forward Collision Alert (FCA)
feature. See
Forward Collision Alert
(FCA) System 0226.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
DRIVING AND OPERATING 215
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, six red
lights or the collision alert symbol on
the HUD, if equipped, 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
0 147. See
Defensive Driving 0178.
Approaching and Following a
Vehicle
The vehicle ahead indicator is in the
instrument cluster and HUD display.
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 lights will come on. The automatic braking may
feel or sound different than if the
brakes were applied manually. This is
normal.
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 XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
216 DRIVING AND OPERATING
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.
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
0 147.
When the vehicle ahead drives away,
press RES+ or the accelerator pedal to
resume cruise control. 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 0202. 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 0146.{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