ignition CADILLAC CT4 2023 User Guide

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Seats and Restraints 47
vehicle is started. These
features can be manually
selected after the ignition is
turned on.
The temperature performance
of an unoccupied seat may be
reduced. This is normal.
To enable or disable remote
start heated or ventilated
seats, select Settings >
Vehicle > Remote Lock,
Unlock, and Start > Remote
Start Auto Heat Seats or
Remote Start Auto Cool
Seats > ON or OFF. See
Remote Vehicle Start016.
Rear Seats
Rear Seat Reminder
If equipped, the message
REAR SEAT REMINDER LOOK
IN REAR SEAT displays under
certain conditions indicating
there may be an item or
passenger in the rear seat.
Check before exiting the
vehicle. This feature will activate when
a second row door is opened
while the vehicle is on or up to
10 minutes before the vehicle
is turned on. There will be an
alert when the vehicle is
turned off. The alert does not
directly detect objects in the
rear seat; instead, under
certain conditions, it detects
when a rear door is opened
and closed, indicating that
there may be something in the
rear seat.
The feature is active only once
each time the vehicle is turned
on and off, and will require
reactivation by opening and
closing the second row doors.
There may be an alert even
when there is nothing in the
rear seat; for example, if a
child entered the vehicle
through the rear door and left
the vehicle without the vehicle
being shut off.
The feature can be turned on
or off. Select Settings >
Vehicle > Rear Seat
Reminder > ON or OFF.
Folding the Seatback
Either side of the seatback
can be folded for more cargo
space. Fold a seatback only
when the vehicle is not
moving.
Caution
Folding a rear seat with the
seat belts still fastened may
cause damage to the seat or
the seat belts. Always
unbuckle the seat belts and
return them to their normal
stowed position before
folding a rear seat.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Seats and Restraints 65
Warning (Continued)
window or a door. If you
experience breathing
problems following an airbag
deployment, you should seek
medical attention.
The vehicle has a feature that
may automatically unlock the
doors, turn on the interior
lamps and hazard warning
flashers, and shut off the fuel
system after the airbags
inflate. The feature may also
activate, without airbag
inflation, after an event that
exceeds a predetermined
threshold. After turning the
ignition off and then on again,
the fuel system will return to
normal operation; the doors
can be locked, the interior
lamps can be turned off, and
the hazard warning flashers
can be turned off using the
controls for those features.
If any of these systems are
damaged in the crash they
may not operate as normal.
{Warning
A crash severe enough to
inflate the airbags may have
also damaged important
functions in the vehicle, such
as the fuel system, brake
and steering systems, etc.
Even if the vehicle appears
to be drivable after a
moderate crash, there may
be concealed damage that
could make it difficult to
safely operate the vehicle.
Use caution if you should
attempt to restart the
engine after a crash has
occurred.
In many crashes severe
enough to inflate the airbag,
windshields are broken by
vehicle deformation. Additional
windshield breakage may also
occur from the front outboard
passenger airbag.
.Airbags are designed to
inflate only once. After an
airbag inflates, you will need some new parts for the
airbag system. If you do not
get them, the airbag system
will not be there to help
protect you in another crash.
A new system will include
airbag modules and possibly
other parts. The service
manual for the vehicle
covers the need to replace
other parts.
.The vehicle has a crash
sensing and diagnostic
module which records
information after a crash.
See Vehicle Data Recording
and Privacy
0496 and
Event Data Recorders 0497.
.Let only qualified technicians
work on the airbag system.
Improper service can mean
that an airbag system will
not work properly. See your
dealer for service.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
86 Seats and Restraints
{Warning
The power seats will work
with the ignition off. Children
could operate the power
seats and be injured. Never
leave children alone in the
vehicle.
Caution
Do not let the LATCH
attachments rub against the
vehicle’s seat belts. This may
damage these parts.
If necessary, move buckled
seat belts to avoid rubbing
the LATCH attachments.
If you need to secure more
than one child restraint in the
rear seat, see Where to Put
the Restraint 079.
1. Attach and tighten the lower attachments to the
lower anchors. If the child
restraint does not have
lower attachments or the
desired seating position does not have lower
anchors, secure the child
restraint with the top
tether and the seat belt.
Refer to the child restraint
manufacturer instructions
and the instructions in this
manual.
1.1. Find the lower anchors
for the desired seating
position.
1.2. Put the child restraint on the seat.
1.3. Attach and tighten the lower attachments on
the child restraint to
the lower anchors.
2. If the child restraint manufacturer recommends
that the top tether be
attached, adjust the top
tether to its full length and
attach it to the anchor.
Refer to the child restraint
instructions and the
following steps:
2.1. Find the top tether anchor. 2.2. Open the top tether
anchor cover to expose
the anchor.
2.3.Route, attach, and tighten the top tether
according to your child
restraint instructions
and the following
instructions:
If the position you are
using does not have a
headrest or head
restraint and you are
using a single tether,
route the tether over
the seatback.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Instruments and Controls 99
remote start along with the
heated seats when it is cold
outside. The heated steering
wheel indicator light may
come on.
If equipped with auto heated
seats, the heated steering
wheel will turn on when the
auto heated seat is activated.
The heated steering wheel
indicator will display the state
of the steering wheel heat.
See Heated and Ventilated
Front Seats045.
Horn
Pressaon the steering
wheel pad to sound the horn.
Windshield Wiper/
Washer
With the ignition on or in
accessory mode, move the
windshield wiper lever to
select the wiper speed.
HI : Use for fast wipes.
LO : Use for slow wipes.
INT : Use this setting for
intermittent wipes or for
Rainsense wipes, when
Rainsense is enabled. For
intermittent wipes, move the
lever up to INT, then turn
the
Oband up for more
frequent wipes or down for
less frequent wipes.
If Rainsense is enabled, see
“Rainsense” later in this
section.
If the windshield wipers are in
use while driving, the exterior
lamps come on automatically if
the exterior lamp control is in AUTO. The transition time for
the lamps coming on varies
based on wiper speed. See
“Lights On with Wipers”
under
Automatic Headlamp System
0 148.
OFF : Use to turn the
wipers off.
1X : For a single wipe, briefly
move the wiper lever down.
For several wipes, hold the
wiper lever down.
Clear snow and ice from the
wiper blades and windshield
before using them. If frozen to
the windshield, carefully
loosen or thaw them.
Damaged blades should be
replaced. See Wiper Blade
Replacement 0401.
Heavy snow or ice can
overload the wiper motor.
{Warning
In freezing weather, do not
use the washer until the
windshield is warmed. (Continued)

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
100 Instruments and Controls
Warning (Continued)
Otherwise the washer fluid
can form ice on the
windshield, blocking your
vision.
{Warning
Before driving the vehicle,
always clear snow and ice
from the hood, windshield,
washer nozzles, roof, and
rear of the vehicle, including
all lamps and windows.
Reduced visibility from snow
and ice buildup could lead to
a crash.
Wiper Parking
If the ignition is turned off
while the wipers are on LO, HI,
or INT with Rainsense
disabled, they will
immediately stop.
If the windshield wiper lever is
then moved to OFF before the
driver door is opened or within 10 minutes, the wipers will
restart and move to the base
of the windshield.
If the ignition is turned off
while the wipers are
performing wipes due to
windshield washing or
Rainsense, the wipers
continue to run until they
reach the base of the
windshield.
Rainsense
If equipped with Rainsense, a
sensor near the top center of
the windshield detects the
amount of water on the
windshield and controls the
frequency of the windshield
wiper.
To turn the Rainsense feature
on or off, select Settings >
Vehicle > Comfort and
Convenience > Rainsense
Wipers > Select ON or OFF.
Keep this area of the
windshield clear of debris to
allow for best system
performance.AUTO :
When enabled, move
the windshield wiper lever to
AUTO. Turn the
Oband on
the wiper lever to adjust the
sensitivity.
.Turn the band up for more
sensitivity to moisture.
.Turn the band down for less
sensitivity to moisture.
.Move the windshield wiper
lever out of the AUTO
position to deactivate
Rainsense.
Wiper Arm Assembly
Protection
When using an automatic car
wash, move the windshield
wiper lever to OFF. This
disables the automatic
Rainsense windshield wipers.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
Instruments and Controls 113
Tachometer
The tachometer displays the
engine speed in revolutions
per minute (rpm).
For vehicles with the Stop/
Start system, when the
ignition is on, the tachometer
indicates the vehicle status.
When pointing to AUTO STOP
(Base Level) or the cluster
displays AUTO STOP text
(Uplevel), the engine is off but
the vehicle is on and can move.
The engine could auto start at
any time. When the indicator
points to OFF, the vehicle
is off.
The tachometer may vary by
several hundred rpm, during
Auto Stop mode, when the
engine is shutting off and
restarting.
Uplevel
The redline of the tachometer
adjusts dynamically based on
engine temperature. The
redline displays a lowerindication when the vehicles
odometer value is less than
805 kilometers (500 miles).
If equipped, the shift
indicators are displayed on
instrument cluster and
Head-Up Display (HUD). The
shift indicators are only
operational when the
automatic transmission is in
Manual mode, or the vehicle
has a manual transmission.
See Manual Mode (Electronic
Shifter)
0281 or
Manual Mode (Mechanical
Shifter) 0280. When the
vehicle engine is less than
70°C (158°F) and the vehicle
odometer value is less than
805 kilometers (500 miles) the
shift indications are not
displayed.
A strong visual indicator is
displayed as the vehicle
approaches the red line. Tour
and Sport themes feature
shift rings while the Track theme features shift lights
accompanied by a numerical
tachometer display.
Fuel Gauge
Base Level
Metric Uplevel Sport Mode
Shown, Other Modes Similar

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 117
Passenger Airbag
Status Indicator
The vehicle has a passenger
sensing system. See
Passenger Sensing System
066 for important safety
information. The overhead
console has a passenger
airbag status indicator.
When the vehicle is started,
the passenger airbag status
indicator will light ON and OFF,
and the symbols for on and
off, for several seconds as a
system check. Then, after
several more seconds, the
status indicator will light either
ON or OFF, and either the
symbol for on or off, to let you
know the status of the front
outboard passenger frontal
airbag and knee airbag. If the word ON, and the on
symbol, is lit on the passenger
airbag status indicator, it
means that the front outboard
passenger frontal airbag and
knee airbag are allowed to
inflate.
If the word OFF, and the off
symbol, is lit on the passenger
airbag status indicator, it
means that the passenger
sensing system has turned off
the front outboard passenger
frontal airbag and knee airbag.
If, after several seconds, all of
the symbols remain lit, or if no
symbols are lit, or if the airbag
readiness light is on, there
may be a problem with the
lights or the passenger
sensing system. See your
dealer for service right away.
{Warning
If the airbag readiness light
ever comes on and stays on,
it means that something may
be wrong with the airbag
(Continued)
Warning (Continued)
system. To help avoid injury
to yourself or others, have
the vehicle serviced right
away. See Airbag Readiness
Light0116 for more
information, including
important safety
information.
Charging System
Light
The charging system light
comes on briefly when the
ignition is turned on, but the
engine is not running, as a
check to show the light is
working. It should go out when
the engine is started.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/4/22
118 Instruments and Controls
If the light stays on, or comes
on while driving, there may be
a problem with the electrical
charging system. Have it
checked by your dealer.
Driving while this light is on
could drain the battery.
When this light comes on, or is
flashing, the Driver Information
Center (DIC) also displays a
message.
If a short distance must be
driven with the light on, be
sure to turn off all
accessories, such as the radio
and air conditioner. Find a safe
place to stop the vehicle.
Malfunction Indicator
Lamp (Check Engine
Light)
This light is part of the
vehicle’s emission control
on-board diagnostic system.
If this light is on while the
engine is running, a
malfunction has been
detected and the vehicle mayrequire service. The light
should come on to show that it
is working when the ignition is
in Service Mode. See Ignition
Positions
0261.
Malfunctions are often
indicated by the system
before any problem is
noticeable. Being aware of the
light and seeking service
promptly when it comes on
may prevent damage.
Caution
If the vehicle is driven
continually with this light on,
the emission control system
may not work as well, the
fuel economy may be lower,
and the vehicle may not run
smoothly. This could lead to
(Continued)
Caution (Continued)
costly repairs that might not
be covered by the vehicle
warranty.
Caution
Modifications to the engine,
transmission, exhaust,
intake, or fuel system, or the
use of replacement tires
that do not meet the original
tire specifications, can cause
this light to come on. This
could lead to costly repairs
not covered by the vehicle
warranty. This could also
affect the vehicle’s ability to
pass an Emissions
Inspection/Maintenance
test. See Accessories and
Modifications0370.
If the light is flashing : A
malfunction has been
detected that could damage
the emission control system

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.