brake light CADILLAC CT4 2023 Owners Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Introduction 3
Danger, Warning, and
Caution
Warning messages found on
vehicle labels and in this
manual describe hazards and
what to do to avoid or
reduce them.
{Danger
Danger indicates a hazard
with a high level of risk
which will result in serious
injury or death.
{Warning
Warning indicates a hazard
that could result in injury or
death.
Caution
Caution indicates a hazard
that could result in property
or vehicle damage.
A circle with a slash through it
is a safety symbol which
means“Do not,” “Do not do
this,” or“Do not let this
happen.”
Symbols
The vehicle has components
and labels that use symbols
instead of text. Symbols are
shown along with the text
describing the operation or
information relating to a
specific component, control,
message, gauge, or indicator.
M: Shown when the owner’s
manual has additional
instructions or information.
*: Shown when the service
manual has additional
instructions or information.
0: Shown when there is more
information on another page —
“see page.”
Vehicle Symbol Chart
Here are some additional
symbols that may be found on
the vehicle and what they
mean. See the features in this
manual for information.
u: Air Conditioning System
G:Air Conditioning
Refrigerant Oil
9: Airbag Readiness Light
!:Antilock Brake
System (ABS)
$: Brake System Warning
Light
9: Dispose of Used
Components Properly
P: Do Not Apply High
Pressure Water
B: Engine Coolant
Temperature
_: Flame/Fire Prohibited

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Introduction 7
18. ENGINE START/STOPButton. See Ignition
Positions 0261.
19. Horn 099.
20. Steering Wheel Adjustment 098.
21. Head-Up Display (HUD) 0136 (If Equipped).
22. Hood Release (Out of View). See Hood 0371.
23. Instrument Panel Illumination Control 0150.
24. Data Link Connector (DLC) (Out of View). See
Malfunction Indicator
Lamp (Check Engine Light)
0118.
25. Electric Parking Brake 0287 (If Equipped).

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
14 Keys, Doors, and Windows
Mechanical Key Access
To access a vehicle with a
weak remote key battery, see
Door Locks018.
Programming Remote
Keys to the Vehicle
Only remote keys programmed
to the vehicle will work. If a
remote key is lost or stolen, a
replacement can be purchased
and programmed through your
dealer. The vehicle can be
reprogrammed so that lost or
stolen remote keys no longer
work. Each vehicle can have
up to eight remote keys
matched to it.
Starting the Vehicle with a
Low Remote Key Battery
For improved vehicle security,
the remote key is equipped
with a motion sensor. When
starting the vehicle, if the
remote key has been idle for a
while, the DIC may display KEY
IN SLEEP MODE, MOVE KEY,
THEN START. Move the remote key slightly and try
starting the vehicle. When
starting the vehicle, if the
remote key battery is depleted
or there is signal interference,
the DIC may display NO KEY
FOUND, REPLACE BATTERY
IN KEY or NO REMOTE KEY
WAS DETECTED PLACE KEY
IN KEY POCKET THEN START
YOUR VEHICLE, follow the
steps shown below:
1. Place the remote key into
the rear cupholder. 2. With the vehicle in P (Park)
or N (Neutral) press the
brake pedal and ENGINE
START/STOP.
Replace the remote key
battery as soon as
possible.
Battery Replacement
{Warning
Never allow children to play
with the remote key. The
remote key contains a small
battery, which can be a
choking hazard. If swallowed,
internal burns can occur,
resulting in severe injury or
death. Seek medical
attention immediately if a
battery is swallowed.
{Warning
To avoid personal injury, do
not touch metal surfaces on
the remote key when it has
been exposed to extreme
(Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Instruments and Controls 97
Instruments and
Controls
Controls
Steering WheelAdjustment . . . . . . . . . . . . . . . . . . 98
Heated Steering Wheel . . . 98
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Windshield Wiper/ Washer . . . . . . . . . . . . . . . . . . . . . . . 99
Compass . . . . . . . . . . . . . . . . . . . . . . 101
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Power Outlets . . . . . . . . . . . . . . . 101
Wireless Charging . . . . . . . . . 102
Warning Lights, Gauges,
and Indicators
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . 105
Instrument Cluster (Base Level) . . . . . . . . . . . . . . . . . . . . . . . . 106
Instrument Cluster (Uplevel) . . . . . . . . . . . . . . . . . . . . . 108
Speedometer . . . . . . . . . . . . . . . . 112
Odometer . . . . . . . . . . . . . . . . . . . . . 112
Trip Odometer . . . . . . . . . . . . . . . 112
Tachometer . . . . . . . . . . . . . . . . . . 113
Fuel Gauge . . . . . . . . . . . . . . . . . . . 113 Engine Coolant
Temperature Gauge
(Base Level) . . . . . . . . . . . . . . . . 114
Engine Coolant Temperature Gauge
(Uplevel) . . . . . . . . . . . . . . . . . . . . . 115
Seat Belt Reminders . . . . . . . 115
Airbag Readiness Light . . . 116
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . 117
Charging System Light . . . 117
Malfunction Indicator Lamp (Check Engine
Light) . . . . . . . . . . . . . . . . . . . . . . . . . 118
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 120
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . 121
Antilock Brake System (ABS) Warning Light . . . . . 121
Performance Shifting Light . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Automatic Vehicle Hold (AVH) Light . . . . . . . . . . . . . . . . . 122
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . . . 122 Automatic Emergency
Braking (AEB) Disabled
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Vehicle Ahead Indicator . . . . . . . . . . . . . . . . . . . . . 123
Pedestrian Ahead Indicator . . . . . . . . . . . . . . . . . . . . . 123
Traction Off Light . . . . . . . . . 123
StabiliTrak OFF Light . . . . . 124
Traction Control System (TCS)/StabiliTrak
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Engine Coolant Temperature Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Driver Mode Control Light . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Tire Pressure Light . . . . . . . . 126
Engine Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Security Light . . . . . . . . . . . . . . . 128
High-Beam On Light . . . . . . 128
Lamps On Reminder . . . . . . 128
Cruise Control Light . . . . . . 128
Door Ajar Light . . . . . . . . . . . . . 129

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
120 Instruments and Controls
The vehicle may not pass
inspection if:
.The light is on when the
engine is running.
.The light does not come on
when the ignition is in
Service Mode.
.Critical emission control
systems have not been
completely diagnosed. If this
happens, the vehicle would
not be ready for inspection
and might require
several days of routine
driving before the system is
ready for inspection. This
can happen if the 12-volt
battery has recently been
replaced or run down, or if
the vehicle has been
recently serviced.
See your dealer if the vehicle
will not pass or cannot be
made ready for the test.
Brake System
Warning Light
MetricEnglish
This light comes on briefly
when the vehicle is turned on
to show that the light is
working. If it does not come on
then, have it fixed so it will be
ready to warn you if there is a
problem.
If the light comes on and stays
on, there is a brake problem.
Have the brake system
inspected right away. This
light may come on if the brake
fluid is low. See Brake Fluid
0 398.
If the light comes on while
driving, pull off the road and
stop carefully. The brake
system has electric brake
boost. Vehicle speed may be limited when the brake system
warning light comes on. The
brake pedal might be harder to
push, or the brake pedal may
go closer to the floor. It could
take longer to stop. If the light
is still on, have the vehicle
towed for service. See
Transporting a Disabled
Vehicle (Electronic Shifter)
0
450 or
Transporting a Disabled
Vehicle (Mechanical Shifter)
0 452.
{Warning
The brake system might not
be working properly if the
brake system warning light
is on. Driving with the brake
system warning light on can
lead to a crash. If the light is
still on after the vehicle has
been pulled off the road and
carefully stopped, have the
vehicle towed for service.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Instruments and Controls 121
Electric Parking Brake
Light
MetricEnglish
This light comes on when the
parking brake is applied. If the
light continues flashing after
the parking brake is released,
or while driving, there is a
problem with the Electric
Parking Brake system.
A message may also display in
the Driver Information
Center (DIC).
If the light does not come on,
or remains flashing, see your
dealer.
Service Electric
Parking Brake Light
This light may come on briefly
when the vehicle is turned on.
If it does not come on, have it
fixed so it will be ready to
warn if there is a problem.
If this light stays on or comes
on while driving, there is a
problem with the Electric
Parking Brake (EPB). Take the
vehicle to a dealer as soon as
possible. In addition to the
parking brake, other safety
functions that utilize the EPB
may also be degraded.
A message may also display in
the Driver Information Center
(DIC). See Electric Parking
Brake 0287.
Antilock Brake
System (ABS)
Warning Light
This light comes on briefly
when the vehicle is turned on
to show that the light is
working. If it does not come on
then, have it fixed so it will be
ready to warn you if there is a
problem.
If the ABS warning light stays
on, or comes on again while
driving, the vehicle needs
service. A chime may also
sound when the light stays on.
If the ABS warning light is the
only light on, the vehicle has
regular brakes, but ABS is not
functioning.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
122 Instruments and Controls
If both the ABS warning light
and the brake system warning
light are on, ABS is not
functioning and there is a
problem with the regular
brakes. See your dealer for
service.
See Brake System Warning
Light0120.
Performance Shifting
Light
If equipped, this light may
display green when Sport
Mode is activated and certain
driving conditions are met.
Sport Mode detects when the
vehicle is being driven in a
competitive manner, and
adjusts the shifting of the
gears accordingly. See Driver
Mode Control 0292.
Automatic Vehicle
Hold (AVH) Light
This light comes on when AVH
is turned on. See Automatic
Vehicle Hold (AVH) 0289.
Lane Keep Assist
(LKA) Light
Base LevelUplevel
If equipped, the Lane Keep
Assist Light may display the
following colors:
.Blank: LKA is disabled.
.White: Appears when the
vehicle starts. A steady
white light indicates that
LKA is not ready to assist.
.Green: Appears when LKA is
turned on and ready to
assist. LKA will gently turn
the steering wheel if the
vehicle approaches a
detected lane marking.
.Amber: Appears when LKA is
active. The light flashes
amber as a Lane Departure
Warning (LDW) alert to
indicate that the lane
marking has been
unintentionally crossed.
If the system detects you
are steering intentionally (to
pass or change lanes), the
LDW alert may not display.
LKA will not assist or alert if
the turn signal is active in the
direction of lane departure,
or if LKA detects that you are
accelerating, braking,
or actively steering. See Lane
Keep Assist (LKA) 0351.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Instruments and Controls 141
.Driver Assistance Systems
.Cruise Control
.Lighting and Bulb
Replacement
.Wiper/Washer Systems
.Doors and Windows
.Seat Belts
.Airbag Systems
.Engine and Transmission
.Tire Pressure
.Battery
Engine Power
Messages
REDUCED
ACCELERATION DRIVE
WITH CARE
This message displays when
the vehicle's propulsion power
is reduced. A reduction in
propulsion power can affect
the vehicle's ability to
accelerate. If this message is
on, but there is no observed
reduction in performance,
proceed to your destination.
Under certain conditions theperformance may be reduced
the next time the vehicle is
driven. The vehicle may be
driven while this message is
on, but maximum acceleration
and speed may be reduced.
Anytime this message stays
on, or displays repeatedly, the
vehicle should be taken to
your dealer for service as
soon as possible.
Under certain operating
conditions, propulsion will be
disabled. Try restarting after
the ignition has been off for
two minutes.
Vehicle Speed
Messages
SPEED LIMITED TO
XXX KM/H (MPH)
This message shows that the
vehicle speed has been limited
to the speed displayed. The
limited speed is a protection
for various propulsion and
vehicle systems, such as
lubrication, thermal, brakes,
suspension, Teen Driver if
equipped, or tires.
Universal Remote
System
See Radio Frequency
Statement
0494.
Universal Remote
System Programming
If equipped, these buttons are
in the overhead console.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 243
Light will come on and vehicle
speed may be limited to
100 kph (62 mph). Any time a
leak DTC is set, the vehicle
should be inspected carefully
for evidence of a leak and
should be repaired
immediately. See your dealer.
Brake Fade Warning Assist
The Brake Fade Warning
Assist system monitors the
performance of the brake
system. If the system detects
brake fade, or if the brake fluid
is near the boiling point, the
driver will be alerted.
The Brake Fade Warning
Assist system is designed for
use with the factory-installed
brake pads or GM approved
replacement pads. If the brake
pads on the vehicle need to be
replaced, use GM approved
brake pads. If this is not done,
the brake fade warning
system may not function
properly.Stage 1 :
The DIC displays a
“Reduce Braking to Avoid
Overheating” message, a
chime sounds and brake pedal
effort and travel is increased.
When the message displays,
the driver should back up
braking points and reduce
brake usage in order to reduce
brake temperature. This will
allow for continued lapping
with no speed limitations.
Stage 2 : The DIC displays a
Brakes Overheated Service
Now message, a chime
sounds, and brake pedal effort
and travel is further increased.
This code indicates that the
brake fluid temperature is
excessive and is about to boil.
The system limits vehicle
speed to 100 km/h (62 mph).
The driver should immediately
start a cool down lap if on the
track. If this message displays,
the vehicle needs to be
serviced. The brake system
needs to cool down, and
the brake fluid must be
immediately flushed with DOT 4 for street use, or to a
qualified DOT 4 race fluid for
track use. Boiled brake fluid is
compromised and must be
replaced.
Brake Burnishing
For vehicles equipped with
front Brembo brake systems:
Performance/racing brake
pads are required prior to
racing or closed track driving.
Vehicles with option code JE2
have performance brake pads.
This procedure should not be
performed on other models as
damage may result.
New brake pads must be
burnished before racing or
other competitive driving.
Caution
Performing the brake
burnish procedure on a base
brake system can result in
brake damage.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 245
This procedure should only be
run on a track and only on dry
pavement. Brake pedal fade
will occur during this track
burnish procedure and can
cause brake pedal travel and
force to increase. This could
extend stopping distance until
the brakes are fully burnished.1. Start track lapping at lower speeds and lower
braking efforts for
three minutes of driving.
Allow for increased braking
distances due to reduced
brake output.
2. After Step 1, increase speed and braking effort
for the next six minutes of
lapping, gradually ending
up at 90% effort. Continue
to allow for increased
braking distance due to
reduced brake output.
3. Cool the brakes by lapping with minimal light braking
for six minutes. As with all high performance
brake systems, some amount
of brake squeal is normal.
Suspension
Track Prep
—Camber Set
To achieve the maximum
camber setting for track use,
follow this procedure prior to
the final track alignment.
1. Remove the Upper Radiator Baffle and both
front shock tower braces.
2. Remove the strutrebound stop.