2023 CADILLAC CT4 light

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 291
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 Stuck0255 and
“Turning the Systems Off and
On” later in this section.
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
g. The traction off
light
idisplays in the
instrument cluster. A DIC
message may display.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
292 Driving and Operating
To turn TCS on again, press
and release
g. The traction off
light
idisplayed in the
instrument cluster will turn off.
If TCS is limiting wheel spin
when
gis pressed, the system
will not turn off until the
wheels stop spinning.
To turn off both TCS and
StabiliTrak/ESC, press and
hold
guntil 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
g. The traction off
light
iand StabiliTrak/ESC
OFF light
gin the instrument
cluster turn off.
Adding accessories can affect
the vehicle's performance. See
Accessories and Modifications
0 370.
Driver Mode Control
Driver Mode Control (DMC)
allows the driver to adjust the
overall driving experience to
better suit driver preference
by adjusting vehicle systems
to fit specific driving needs.
Drive mode availability and
affected vehicle systems are
dependent on vehicle trim
level, region, and optional
features.
If the vehicle is in Tour Mode
or My Mode, it will stay in that
mode through future ignition
cycles. If the vehicle is in any
other mode, it will return to
Tour Mode when the vehicle is
restarted. When a mode is
selected, an indicator will
come on in the instrument
cluster and stay on.
Mode Activation
Driver Mode Control Switch
for Automatic Transmission

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 297
shifts are also firmer to
increase the quickness of
shifting.
Engine Sound
Adjusts the volume of engine
noise.
The sound level changes when
the variable exhaust
valves open.
Steering (Assist Effort)
Adjusts from a lighter steering
feel in Tour Mode to reduced
assist in Sport and Track
Mode for more steering feel.
Magnetic Ride Control (If
Equipped)
Adjusts the shock dampening
firmness from a comfort in
Tour Mode to an optimized
responsiveness tune in Sport
and Track.
Stability Control
.Competitive Mode allows
less computer control to
permit some slide and driftand is selected with the
TCS/StabiliTrak button
–
only available in Sport Mode.
.StabiliTrak/Electronic
Stability Control (ESC) can
be turned off by pressing
and holding the TCS/
StabiliTrak button for
five seconds.
Brake Feel
Adjusts brake pedal sensitivity
by selecting how quick or slow
the brakes respond to input.
Drive Mode Customization
The following settings can be
changed using the Drive Mode
Customization Menu. See
Settings > Vehicle > Drive
Mode Customization in the
center display to customize
My Mode or V-Mode.
Steering
Steering adjusts the effort
required to turn the steering
wheel. The steering wheel
offers better feedback in the Tour setting, but requires
more effort in the Sport and
Track settings.
–Tour, Sport, Track
Suspension
Suspension adjusts the
firmness of the suspension in
the vehicle. Suspension
adjusts the stiffness of the
shocks and/or springs. The
ride is more comfortable at
lower settings and is stiffer at
higher settings for better
control.
–Tour, Sport, Track
Brake Feel
Brake Feel adjusts the brake
pedal response. Settings
range from a slower response
for more comfortable driving
to the quickest response for
quicker deceleration. Brake
pedal travel decreases and
caliper pressure increases in
the Sport and Track settings.
–Tour, Sport, Track

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
298 Driving and Operating
Engine/Shift
Engine/Shift adjusts the
throttle response, gear
shifting and engine
performance. Throttle
response increases in the
Sport, Track, and Snow/Ice
settings, and gear shifting is
more aggressive.
–Snow/Ice, Tour, Sport, Track
Engine Sound
Engine sound adjusts the
volume of engine noise. The
settings range from quietest
to loudest volume from
Stealth through Track.
–Stealth, Tour, Sport, Track
PTM (If Equipped)
PTM controls vehicle
performance systems for
professional handling on race
tracks. Traction Control and
Stability Control are reduced
when moving through each of
the settings. Changing PTM
settings may also
automatically change theother subsystem settings.
While driving on a track, turn
off all active safety features.
While driving on a track, turn
off applicable driver
assistance features. For more
information, see Assistance
Systems for Driving
0342. For
more information on PTM, see
Competitive Driving Mode
0 298.
–Off, Wet, Dry, Sport, Race 1,
Race 2
Competitive
Driving Mode
To select this optional
handling mode, place the
vehicle in Sport Mode and
press
gtwo times and the
Driver Information Center
(DIC) will display
COMPETITIVE MODE ON.
While in the Competitive
Driving Mode, the traction off
light
iand StabiliTrak/ESC
OFF light
gwill come on in the
instrument cluster. Traction
Control System (TCS) does not limit wheel spin, the
Electronic Limited-Slip
Differential (eLSD) allows
increased vehicle agility, and
more effort is required to turn
the steering wheel. See
“Limited-Slip Differential
(V–Series Only)”
later in this
section. Adjust your driving
accordingly.
Press
gagain, or turn the
vehicle to accessory mode and
restart the vehicle, to turn
TCS back on. The traction off
light
iand StabiliTrak/ESC
OFF light
gwill go out.
Caution
When traction control is
turned off, or Competitive
Driving Mode is active, it is
possible to lose traction.
Performance Traction
Management (PTM)
If equipped, PTM can be
activated through V-Mode
customization or by pressing

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 299
the ESC switch twice while in
Track Mode. Depending on
available options and trim
levels, it can also be activated
through a separate PTM
switch on the steering wheel.
To activate PTM through
V-Mode customization, select
the desired PTM state in the
center stack (Settings >
Vehicle > Drive Mode
Customization > V-Mode).
Press the V-Mode switch once
to activate V-Mode. When
PTM is configured, a message
will appear in the DIC“V-Mode
Active –Press Again for PTM
On –ESC May be Disabled.”
To confirm and enter PTM,
press the V-Mode switch
again. The PTM state can now
be modified using the MODE
switch or changing the
V-Mode PTM settings in the
center stack. Both the V-Mode
and PTM indicators are
displayed. To exit PTM, press
the ESC switch. To cancel, press the center dismiss
button on the steering wheel
(V-Mode remains active).
If available, PTM can also be
activated through a PTM
switch on the steering wheel
by pressing up on the switch.
From there a PTM menu will
appear in the DIC. Press up or
down on the PTM switch to
scroll through the options and
make a selection. To exit PTM,
select INACTIVE in the PTM
menu, turn off PTM in the
V-Mode configuration page,
or press the ESC switch once.
Selecting PTM states may
modify Off, Wet, Dry, Sport,
Race 1, and Race 2 V-Mode
customization options.
In vehicles with a PTM
steering wheel switch,
Inactive, Wet, Dry, Sport, Race
1, and Race 2 PTM states are
available through the
moding menu.
In vehicles without a PTM
steering wheel switch, Wet,
Dry, Sport, Race 1, and Race 2
PTM states are available
through the moding menu.
The following is a DIC display
description and the
recommended usage of
each mode:
WET
.Intended for all driver skill
levels.
.Wet or damp conditions
only
—not intended for use
in heavy rain or standing
water.
.StabiliTrak/ESC is on and
engine power is reduced
based on conditions.
DRY
.For use by less experienced
drivers or while learning a
new track.
.Dry conditions only.
.StabiliTrak/ESC is on and
engine power is slightly
reduced.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
300 Driving and Operating
SPORT
.For use by drivers who are
familiar with the track.
.Dry conditions only.
.Requires more driving skill
than DRY.
.StabiliTrak/ESC is on and
more engine power is
available than in DRY.
RACE 1
.For use by drivers who are
familiar with the track.
.Dry conditions only.
.Requires more driving skill
than modes DRY or SPORT.
.StabiliTrak/ESC is off and
available engine power is the
same as SPORT.
RACE 2
.For use by experienced
drivers who are familiar with
the track.
.Dry conditions only.
.Requires more driving skill
than in other modes.
.StabiliTrak/ESC is off and
engine power is available for
maximum cornering speed.
In any PTM Mode, Launch
Control is available. Use PTM
Race 2 for the most
consistent performance
during drag strip use. See
“Custom Launch Control” in
Track Events and Competitive
Driving (V-Series and V-Series
Blackwing) 0238.
Launch Control
If equipped, Launch Control is
available within Competitive
Driving Mode and PTM to
allow high levels of vehicle
acceleration in a straight line.
Launch Control is a form of
traction control that manages
tire spin while launching the
vehicle. This feature is
intended for use during closed
course race events where
consistent zero to
60 and quarter mile times are
desirable. Launch Control is only
available when the following
criteria are met:
.Competitive Driving Mode is
selected or any of the PTM
modes are selected. The
traction off light comes on in
the instrument cluster and
the appropriate DIC
message displays.
.The vehicle is not moving.
.The steering wheel is
pointing straight.
Automatic Transmissions
.The brake pedal is firmly
pressed to the floor,
equivalent to a panic brake
event.
.The accelerator pedal is
rapidly applied to wide open
throttle. If the vehicle rolls
due to wide open throttle,
release the throttle, press
the brake pedal more firmly,
and reapply the accelerator
to wide open throttle.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
304 Driving and Operating
The speedometer reading can
be displayed in either English
or metric units. See
Instrument Cluster (Base
Level)0106 or
Instrument Cluster (Uplevel)
0 108. 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 five ways to end
cruise control:
.Step lightly on the brake
pedal.
.Press*.
.Shift the transmission to
N (Neutral).
.Press the clutch pedal for
several seconds or shift to
Neutral (manual
transmissions).
.PressJ.
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 (Advanced)
If equipped, Adaptive Cruise
Control (ACC) allows the
cruise control set speed and
following gap to be selected.
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 0494.
If a vehicle is detected in your
path, ACC can speed up the
vehicle or apply limited,
moderate braking to maintain