2023 CADILLAC CT4 coolant

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
18 Keys, Doors, and Windows
.A remote key is in the
vehicle.
.The hood is not closed.
.The hazard warning flashers
are on.
.There is an emission control
system malfunction.
.The engine coolant
temperature is too high.
.The oil pressure is low.
.The 30 minutes of engine
run time have been used.
.The vehicle is not in P (Park).
Door Locks
{Warning
Unlocked doors can be
dangerous.
.Passengers, especially
children, can easily open
the doors and fall out of a
moving vehicle. The doors
can be unlocked and
opened while the vehicle is
moving. The chance of
being thrown out of the(Continued)
Warning (Continued)
vehicle in a crash is
increased if the doors are
not locked. So, all
passengers should wear
seat belts properly and
the doors should be
locked whenever the
vehicle is driven.
.Young children who get
into unlocked vehicles may
be unable to get out.
A child can be overcome
by extreme heat and can
suffer permanent injuries
or even death from heat
stroke. Always lock the
vehicle whenever
leaving it.
.Outsiders can easily enter
through an unlocked door
when you slow down or
stop the vehicle. Locking
the doors can help
prevent this from
happening. To lock or unlock the doors
from outside the vehicle:
.PressQorKon the remote
key. See Remote Key
Operation 09.
.Use the mechanical key in
the driver door. The key lock
cylinder is covered with
a cap.
See “Driver Door Key Lock
Cylinder Access (In Case of
Dead Battery)” later in this
section.
To lock or unlock the doors
from inside the vehicle:
.PressQorKon the power
door lock switch.
.Pull once on the door handle
to unlock the door and again
to open the door.

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
106 Instruments and Controls
Instrument Cluster (Base Level)
English Base Level Cluster Shown, Metric Similar
1. Tachometer0113
2. Driver Information Center (DIC) (Base Level) 0129
or
Driver Information Center
(DIC) (Uplevel) 0132
3. Speedometer 0112 4. Engine Coolant
Temperature Gauge
(Base Level) 0114 or
Engine Coolant
Temperature Gauge
(Uplevel) 0115
5. Fuel Gauge 0113
Cluster Menu
There is an interactive display
area in the center of the
instrument cluster.
Use the right steering wheel
control to open and scroll
through the different items
and displays.
Press
SorTto access the
cluster applications. Use the
thumbwheel to scroll through
the list of available features
within the applications. Not all
applications or features will be
available on all vehicles.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
110 Instruments and Controls
to reset the timer, or to view
the lap history. A maximum of
16 laps can be stored.
Lap Timer (with PDR) :The
lap times recorded with the
PDR system will automatically
be displayed in this window.
This only happens if a track
has been selected in the PDR
system and a video recording
is started. See Performance
Data Recorder (PDR) 0192.
Friction Bubble : A four
quadrant visual display,
indicative of the four corners
of the car, with a “bubble”
showing where the most
inertia is being exerted on the
vehicle.
Launch Control : If equipped,
the Launch Control display
allows the driver to adjust the
parameters of the Launch
Control System. See Track
Events and Competitive
Driving (V-Series and V-Series
Blackwing) 0238.Audio
Browse for music, select from
favorites, or change the audio
source. Use the thumbwheel
to change the station or go to
the next or previous track.
Navigation
If there is an active route,
press the thumbwheel to
cancel or resume route
guidance, or turn the voice
prompts on or off.
Phone
View recent calls or scroll
through contacts when you
are not on an active call. Mute
the phone or switch to
handset operation if you are
on an active call.
Options
Use the thumbwheel to scroll
through items in the
Options menu. Display Themes
Press the thumbwheel to
enter the Display menu. There
are four instrument cluster
display configurations to
choose from. Sport, Tour,
Stealth, and Track (if
equipped). The style of the
cluster will change depending
on the theme selected.
Default is linked to Driver
Mode. Other display themes
can be set.
If in My Mode then those
displays plus HUD (if equipped)
can be set. My Mode is only
selectable when in Link to
Driver mode.
Stealth Mode is enabled when
the Instrument Panel
Illumination Control is set to
the minimum level. See
Instrument Panel Illumination
Control
0150.
.Sport: Displays Coolant
Temperature, Fuel Gauge,
Fuel Range, Compass, Driver
Mode Control Light,

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Instruments and Controls 111
Odometer, Speed,
Tachometer, Electronic
Transmission Range, Current
Gear, Speed Limit, Info Area,
and Interaction Area, and
Cruise Control (if engaged).
.Tour: Displays Fuel Gauge,
Fuel Range, Compass, Driver
Mode Control Light,
Odometer, Speed,
Tachometer, Electronic
Transmission Range, Current
Gear, Peak Performance,
Speed Limit, Info Area, and
Interaction Area, and Cruise
Control (if engaged).
.Stealth: Displays Fuel Gauge,
Digital Speed, and
Tachometer.
.Track: If equipped, displays
Coolant Temperature, Fuel
Gauge, Driver Mode Control
Light, Speed, Tachometer,
Electronic Transmission
Range, Current Gear, Info
Area, and Interactive Area.Preset info tiles shown on
each layout:
Sport :
Time and
Temperature, Oil
Temperature, Tire Status, Oil
Pressure
Track : Oil Pressure,
Transmission Fluid
Temperature, Tire Status, Oil
Temperature
Tour : Time and Temperature
Stealth : None
Speed Warning
The Speed Warning display
allows the driver to set a
speed that they do not want
to exceed. To set the Speed
Warning, press the
thumbwheel when Speed
Warning is displayed, or press
the thumbwheel on the main
view to set the speed value.
Scroll to adjust the value.
Press the thumbwheel to set
the speed. Once the speed is
set, this feature can be turned
off by pressing the
thumbwheel while viewing this page. If the selected speed
limit is exceeded, a pop-up
warning is displayed with a
chime.
Speed Sign
Shows sign information, which
comes from a roadway
database in the onboard
navigation, if equipped.
Units
Press the thumbwheel while
Units is displayed to enter the
Units menu. Choose US or
metric units by pressing the
thumbwheel while the desired
item is highlighted. A selected
mark will be displayed next to
the selected item.
Tachometer
If equipped, the Tachometer
allows the driver to choose
between the traditional
tachometer (linear gauge) or
the numerical tachometer
(shift lights with numerical
Tachometer RPM) when Track
theme is selected.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
114 Instruments and Controls
English Uplevel Sport Mode
Shown, Other Modes Similar
When the ignition is on, the
fuel gauge indicates the
approximate amount of fuel
left in the tank.
There is an arrow near the
fuel gauge pointing to the side
of the vehicle the fuel door
is on.
When the indicator nears
empty, the low fuel light
comes on. There still is a little
fuel left, but the vehicle should
be refueled soon.
The fuel gauge may:
.Take a little more, or less
fuel to fill up than it
indicates. For example, the
gauge may have indicated
the tank is half full, but it actually takes a little more,
or less than half the tank's
capacity to fill the tank.
.Move a little while turning a
corner, speeding up,
or braking.
.Take a few seconds to
stabilize after the ignition is
turned on and goes back to
empty when the ignition is
turned off.
These are normal conditions,
none of which indicate a
problem with the fuel gauge.
Fuel Range
The uplevel instrument cluster
has a estimated fuel range
located at the bottom center
of the display. The fuel range
is displayed with the
approximate distance the
vehicle can be driven without
refueling. The fuel range
estimate is based on an
average of the vehicle’s fuel
economy over recent driving
history and the amount of fuel
remaining in the fuel tank. When the estimated fuel
range is low, the range shows
LOW and a message may also
display in the Driver
Information Center (DIC).
Engine Coolant
Temperature Gauge
(Base Level)
Metric

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Instruments and Controls 115
English
This gauge measures the
temperature of the vehicle's
engine.
While driving under normal
operating conditions, if the red
LED is illuminated, the engine
is too hot. Pull off the road,
stop the vehicle, and turn off
the engine as soon as
possible.
Engine Coolant
Temperature Gauge
(Uplevel)
Sport Mode Shown, Track Mode Similar
This gauge shows the engine
coolant temperature.
If the gauge pointer moves
into the red zone, the engine is
too hot.
This reading indicates the
same thing as the warning
light. It means that the engine
coolant has overheated. If the
vehicle has been operating
under normal driving
conditions, pull off the road,
stop the vehicle, and turn off
the engine as soon as possible. See Engine
Overheating
0391 for more
information.
Seat Belt Reminders
Driver Seat Belt Reminder
Light
There is a driver seat belt
reminder light on the
instrument cluster.
When the vehicle is started,
this light flashes and a chime
may come on to remind the
driver to fasten their seat belt.
Then the light stays on solid
until the belt is buckled. This
cycle may continue several
times if the driver remains or
becomes unbuckled while the
vehicle is moving.