2023 CADILLAC CT4 warning light

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
288 Driving and Operating
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 checkthe 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.
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 0358.
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.
The EPB can also be used to
prevent roll back for vehicles
with a manual transmission

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
290 Driving and Operating
{Warning
Do not rely on this feature.
It 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.
When Automatic Vehicle Hold
(AVH) is turned on and the
vehicle is braked to a stop,
AVH prevents the vehicle from
moving during the transition
from brake pedal release to
accelerator pedal apply. The
brakes release when the
accelerator pedal is applied.
The brakes may also release
under other conditions. Do not
rely on AVH to hold the
vehicle.
If the accelerator pedal is not
applied within a few minutes,
the Electric Parking Brake will apply. The parking brake will
also apply if the driver door is
opened or the driver seat belt
is unfastened while AVH is
holding the vehicle.
AVH can be turned on by
pressing AUTO HOLD. The
indicator light on the switch
will come on. The AVH light on
the instrument panel will come
on while AVH is actively
holding the vehicle. See
Automatic Vehicle Hold (AVH)
Light
0122.
Ride Control
Systems
Traction Control/
Electronic Stability
Control
The vehicle has a Traction
Control System (TCS) and
StabiliTrak/Electronic Stability
Control (ESC). These systems
help limit wheel slip 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. When this happens,
the system brakes the
spinning wheel(s) and/or
reduces engine power to limit
wheel spin.
StabiliTrak/ESC activates
when the computer senses a
difference between the
intended path and the
direction the 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 intended
direction.
If cruise control is being used
and TCS or StabiliTrak/ESC
begins to limit wheel spin,
cruise control will disengage.
Cruise control may be turned
back on when road conditions
allow.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 313
attention is on the road ahead,
ACC resumes automatically.
See“Attention to the Road”
under Super Cruise 0316.
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 0287.
To release the EPB, press the
accelerator pedal.
A DIC warning message may
display indicating to shift to
P (Park) before exiting the
vehicle.
{Warning
If ACC has stopped the
vehicle, and if ACC is
disengaged, turned off,
or canceled, the vehicle will
(Continued)
Warning (Continued)
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
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 (Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 317
Super Cruise uses the
following to detect the current
lane position and lane
markings ahead on compatible
roads under certain
conditions:
.Cameras
.Global Positioning System
(GPS) sensing
.A high-precision map
.GPS-enhancement data
downloaded through
Connected Services
Super Cruise works with
Adaptive Cruise Control (ACC),
which controls acceleration
and braking while Super
Cruise is enabled and
operating. Review and
understand both this section
and the ACC section before
using Super Cruise. See
Adaptive Cruise Control
(Advanced) 0304.
An active Connected Service
plan that includes Super
Cruise Services is required to
use Super Cruise.
{Warning
Super Cruise does not
perform all aspects of
driving, nor does it do
everything a driver can do.
Super Cruise only steers to
maintain vehicle position in
the current lane or, under
some circumstances, to
change lanes. Super Cruise
can only be used with
Adaptive Cruise Control.
Super Cruise does:
.Not prevent crashes or
warn of possible crashes.
.Not steer to avoid
stopped or slow-moving
vehicles, cross-traffic,
construction barriers or
cones, motorcycles,
children, pedestrians,
animals, or other objects
on the road. (Continued)
Warning (Continued)
.Not steer in response to
vehicles or objects next to
your vehicle, including
vehicles attempting to
enter your lane.
.Not respond to traffic
lights, stop signs, or other
traffic control devices.
.Not respond to crossing
traffic.
.Not make turns.
.Not steer to merge onto
or to exit highways.
.Not steer to avoid,
or steer through
construction zones.
.Not function on surface
streets.
.Not respond to oncoming
traffic.
.Not function in city driving
conditions.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 319
Warning (Continued)
.Not for city driving.
.Not during heavy or
emergency braking.
.Not on surface streets.
.Not on a road shoulder,
service drive, or under an
elevated freeway.
.Not in tunnels.
.Not when towing a trailer.
.Not in a freeway exit lane.
When Super Cruise is
Available
Super Cruise Indicator
Super Cruise is designed to
operate only when:
.ACC is on. See Adaptive
Cruise Control (Advanced)
0 304.
.Teen Driver is not active.
.The GPS detects the vehicle
is on a compatible road.
.Both the camera and the
radar sensors are
functioning and not covered,
obstructed, or damaged.
.The Driver Attention System
(DAS) detects the driver's
head and eyes are directed
toward the road ahead.
.The lane markings are clearly
visible and able to be
detected by the system.
Poor Conditions
Poor Conditions
Using Super Cruise
{Warning
To prevent serious injury or
death:
.Always check that Super
Cruise is available
^
before pressing].
.Only remove your hands
from the steering wheel if
the steering wheel light
bar,
^, and\are green.
Super Cruise may not
begin steering
immediately, even when
Super Cruise is available
and
]has been pressed.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 321
When ready to allow Super
Cruise to resume steering
again, position the vehicle in
the center of the lane, hold the
steering wheel until the
steering wheel light bar turns
green, and then release the
steering wheel when it is safe
to do so.
Super Cruise does not
respond to vehicles in other
lanes near your vehicle.
{Warning
To help prevent crashes
before making a lane
change:
.Always check mirrors.
.Glance over your shoulder.
.Use the turn signals.Super Cruise Lane Change
On Demand Lane Changes
Super Cruise can steer to
perform a single lane change
under certain conditions when
requested by the driver or
initiated by the Super Cruise
System.
To request a lane change:
1. Verify the lane next to your vehicle is clear and
conditions are safe to
make a lane change.
2. Use the turn signal lever to activate the turn signal in
the direction of the desired
lane change.
3. Return the turn signal lever to the neutral
position after the lane
change. See Turn and
Lane-Change Signals
0149.
4. To cancel a lane change, return the turn signal lever
to the neutral position,
move the lever in the opposite direction of the
lane change, or steer
manually at any time.
Automatic Lane Changes
If equipped with automatic
lane change, the Super Cruise
System may initiate a single
lane change when enabled
through vehicle settings under
following conditions:
.The Super Cruise System
may initiate a lane change to
the left to pass a slower
moving vehicle ahead and a
subsequent lane change to
right to return to your
original lane.
.Super Cruise System may
initiate a lane change to left
or right when current lane is
ending ahead.
.To cancel a Super Cruise
lane change, return the turn
signal lever to the neutral
position or move the turn
signal lever.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
322 Driving and Operating
.Super Cruise steering can be
overridden with manual
steering at any time to
cancel a Super Cruise lane
change.
.Super Cruise System may
initiate an automatic lane
change to left or right when
a slower moving vehicle is
detected in the adjacent
ending lane to provide space
for merging vehicle.
If Super Cruise detects that
traffic is clear, Super Cruise
will steer the vehicle to
perform the lane change.
A message appears on the
Driver Information Center
(DIC) during the lane change to
provide more information on
the status of the lane change.
Super Cruise Lane Change
functionality is only available
on Super Cruise capable
divided roads. Super Cruise Lane Change
may be disabled when a trailer
or other accessories (e.g. bike
rack, cargo tray, etc.) are
detected.
Do not use Super Cruise Lane
Change when towing a trailer.
The Super Cruise Lane
Change feature can be
customized to be Off, On
Demand Lane Change, or On
Demand Lane Change &
Automatic Lane Change
through vehicle settings.
Touch the Settings icon on the
infotainment home page.
Select
“Vehicle” to display the
list of available options and
select “Super Cruise Lane
Change”.
{Warning
Super Cruise Lane Change
may not detect a vehicle in
an adjacent lane. Always
supervise the driving task
and monitor traffic
(Continued)
Warning (Continued)
conditions when using the
Super Cruise Lane Change
feature. Only request a lane
change when traffic
conditions are safe for a
lane change, and always be
ready to manually steer the
vehicle. See“Steering
Manually and Changing
Lanes” listed previously in
this section.
Take Over Alert
{Warning
Super Cruise will not
maintain the vehicle’s speed
while the steering wheel
light bar is flashing red.
If the steering wheel light
bar flashes red, immediately
resume manual steering to
prevent serious injury or
death. If you do not resume
manual steering, the vehicle (Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 323
Warning (Continued)
will begin to slow in the
same lane and eventually
come to a complete stop on
the road.
Any time the steering wheel
light bar flashes red, resume
manual steering immediately.
To begin steering manually,
hold the steering wheel firmly
(with both hands) using the
highlighted regions as shown
in the picture below.
The instrument cluster light
^, will also turn red and a
message will display in the
Driver Information Center
(DIC). In addition, beeps will
sound, or the Safety Alert
Seat will vibrate. To view
Collision and Detection
options, touch the Settings
icon on the infotainment home
page. Select “Vehicle”to
display the list of available
options and select “Collision/
Detection Systems”. After you
begin steering manually, then
Super Cruise will disengage.
The red flashing steering
wheel light bar could occur
under any of the following
conditions:
.Lane markings are poor,
or visibility is limited.
.The Driver Attention System
(DAS) does not detect that
the driver's head and eyes
are directed toward
the road.
.ACC is canceled.
.The vehicle is on a tight
curve, or the lanes are too
wide, or the vehicle goes into
a curve too fast.
.The compatible road ends.
.The vehicle is approaching
an intersection controlled by
a traffic light, stop sign,
or other traffic control
device.
.A Super Cruise system fault
occurs.
.Super Cruise is unable to
complete the lane change
maneuver.
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 (Continued)