2023 CADILLAC CT4 Owners Manual

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

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 305
the selected following gap. To
disengage ACC, apply the
brake. If the Traction Control
System (TCS) or StabiliTrak/
Electronic Stability Control
(ESC) system activates while
ACC is engaged, ACC may
automatically disengage. See
Traction Control/Electronic
Stability Control0290. When
road conditions allow ACC to
be safely used, ACC can be
turned back on. ACC will not
engage if the TCS or
StabiliTrak/ESC electronic
stability control system is
disabled.
ACC can reduce the need for
you to frequently brake and
accelerate, especially when
used on expressways,
freeways, and interstate
highways. When used on other
roads, you may need to take
over the control of braking or
acceleration more often.{Warning
ACC has limited braking
ability and may not have
time to slow the vehicle
down enough to avoid a
collision with another vehicle
you are following. This can
occur when vehicles
suddenly slow or stop
ahead, or enter your lane.
Also see “Alerting the
Driver” in this section.
Complete attention is
always required while driving
and you should be ready to
take action and apply the
brakes. See Defensive
Driving 0235.
{Warning
ACC will not detect or brake
for children, pedestrians,
animals, or other objects.
Do not use ACC when:
.On winding and hilly roads
or when the sensors are
blocked by snow, ice,
or dirt. The system may
not detect a vehicle
ahead. Keep the entire
front of the vehicle clean.
.Visibility is low, such as in
fog, rain, or snow
conditions. ACC
performance is limited
under these conditions.
.On slippery roads where
fast changes in tire
traction can cause
excessive wheel slip.
.When towing a trailer.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
306 Driving and Operating
J:Press to turn the system
on or off. The indicator turns
white on the instrument
cluster when ACC is
turned on.
RES+ : Press briefly to resume
the previous set speed or to
increase vehicle speed if ACC
is already engaged. To
increase speed by 1 km/h
(1 mph), press RES+ to the first
detent. To increase speed to
the next 5 km/h (5 mph) mark
on the speedometer, press
RES+ to the second detent. SET–
:Press briefly to set the
speed and activate ACC or to
decrease vehicle speed if ACC
is already engaged. To
decrease speed by 1 km/h
(1 mph), press SET− to the first
detent. To decrease speed to
the next 5 km/h (5 mph) mark
on the speedometer, press
SET− to the second detent.
*:Press to disengage ACC
without erasing the selected
set speed.
[: Press to select a
following gap time (or
distance) setting for ACC of
Far, Medium, or Near.
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. Switching Between ACC and
Regular Cruise Control
To switch between ACC and
regular cruise control, press
and hold
*. A Driver
Information Display (DIC)
message displays. See Vehicle
Messages 0140.
ACC Indicator
(Base Level)ACC Indicator (Uplevel)
Regular Cruise Control Indicator

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 307
When ACC is engaged, a
green
oindicator will be lit on
the instrument cluster. When
the regular cruise control is
engaged, a green
Jindicator
will be lit on the instrument
cluster and the following gap
will not display.
When the vehicle is turned on,
the cruise control mode will be
set to the last mode used
before the vehicle was
turned off.
{Warning
Always check the cruise
control indicator on the
instrument cluster to
determine which mode
cruise control is in before
using the feature. If ACC is
not active, the vehicle will
not automatically brake for
other vehicles, which could
cause a crash if the brakes
are not applied manually.
You and others could be
seriously injured or killed. Setting Adaptive Cruise
Control
If
ois on when not in use,
SET-/RES+ could be pressed
by mistake and activate ACC
when not desired. Keep
ooff
when cruise is not being used.
Select the set speed desired
for ACC. This is the vehicle
speed when no vehicle is
detected in its path.
While the vehicle is moving,
ACC will not set at a speed
below a minimum speed,
although it can be resumed.
If equipped with Super Cruise,
this minimum speed is 5 km/h
(3 mph), otherwise, it is
25 km/h (15 mph). The minimum
allowable set speed is 25 km/h
(15 mph).
To set ACC while moving:
1. Press
J.
2. Get up to the desired speed.
3. Press and release SET−. 4. Remove your foot from the
accelerator.
After ACC is set, it may
immediately apply the brakes if
a vehicle ahead is detected
closer than the selected
following gap.
ACC can also be set while the
vehicle is stopped if ACC is on
and the brake pedal is applied.
The ACC indicator displays on
the instrument cluster and
Head-Up Display (HUD),
if equipped. When ACC is
turned on, the indicator will be
lit white. When ACC is
engaged, the indicator will turn
green.
Be mindful of speed limits,
surrounding traffic speeds,
and weather conditions when
selecting the set speed.
Resuming a Set Speed
If ACC is set at a desired
speed and then the brakes are
applied, ACC is disengaged
without erasing the set speed
from memory.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
308 Driving and Operating
To begin using ACC again,
press RES+ up briefly while
moving more than 5 kph
(3 mph). The vehicle returns to
the previous set speed.
If the vehicle is stopped with
the brake pedal applied, press
RES+ and release the brake
pedal. ACC will hold the vehicle
until RES+ or the accelerator
pedal is pressed.
A green ACC indicator and the
set speed display on the
instrument cluster. The vehicle
ahead indicator may be
flashing if a vehicle ahead was
present and moved. See
“Approaching and Following a
Vehicle”later in this section.
Once ACC has resumed,
if there is no vehicle ahead,
if the vehicle ahead is beyond
the selected following gap,
or if the vehicle has exited a
sharp curve, then the vehicle
speed will increase to the set
speed. Increasing Speed While ACC
Is at a Set Speed
If ACC is already activated, do
one of the following:
.Use the accelerator to get
to the higher speed. Press
SET–
. Release the control
and the accelerator pedal.
The vehicle will now cruise at
the higher speed.
When the accelerator pedal
is pressed, ACC will not
brake because it is
overridden. The ACC
indicator will turn blue on the
instrument panel and heads
up display, if equipped
.Press and hold RES+ until
the desired set speed is
displayed, then release it.
.To increase speed in smaller
increments, press RES+ to
the first detent. For each
press, the vehicle goes
1 km/h (1 mph) faster.
.To increase speed in larger
increments, press RES+ to
the second detent. For each
press, the vehicle speed increases to the next 5 km/h
(5 mph) mark on the
speedometer.
The set speed can also be
increased while the vehicle is
stopped.
.If stopped with the brake
applied, press RES+ until the
desired set speed is
displayed.
.If ACC is holding the vehicle
at a stop and there is
another vehicle directly
ahead, pressing RES+ will
increase the set speed.
.Pressing RES+ when there is
no longer a vehicle ahead or
the vehicle ahead is pulling
away and the brake is not
applied will cause the ACC to
resume.
When it is determined there is
no vehicle ahead or the vehicle
ahead is beyond the selected
following gap, then the vehicle
speed will increase to the set
speed.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 309
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.
Reducing Speed While ACC Is
at a Set Speed
If ACC is already activated, do
one of the following:
.Use the brake to get to the
desired lower speed.
Release the brake and press
SET−. The vehicle will now
cruise at the lower speed.
.Press and hold SET− until
the desired lower speed is
displayed, then release it.
.To decrease speed in
smaller increments, press
SET− to the first detent. For
each press, the vehicle goes
about 1 km/h (1 mph) slower.
.To decrease speed in larger
increments, press or hold
SET− to the second detent. For each press, the vehicle
speed decreases to the next
5 km/h (5 mph) mark on the
speedometer.
The set speed can also be
decreased while the vehicle
is stopped.
.To decrease speed while the
vehicle is stopped, press
SET−
until the desired set
speed is displayed.
Selecting the Follow
Distance Gap
When a slower moving vehicle
is detected ahead within the
selected following gap, ACC
will adjust the vehicle's speed
and attempt to maintain the
follow distance gap selected.
Press
[on the steering
wheel to adjust the following
gap. Each press cycles the gap
button through three settings:
Far, Medium, or Near.
When pressed, the current
gap setting displays briefly on
the instrument cluster and the
HUD (if equipped). Subsequent presses cycle the gap button
through three settings: Far,
Medium, or Near. The gap
setting will be maintained until
it is changed.
Far Gap Setting
Medium Gap Setting

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
310 Driving and Operating
Near Gap Setting
Since each gap setting
corresponds to a following
time (Far, Medium, or Near),
the following distance will vary
based on vehicle speed. The
faster the vehicle speed, the
further back your vehicle will
follow a vehicle detected
ahead. Consider traffic and
weather conditions when
selecting the following gap.
The range of selectable gaps
may not be appropriate for all
drivers and driving conditions. Changing the gap setting
automatically changes the
alert timing sensitivity (Far,
Medium, or Near) for the
Forward Collision Alert (FCA)
feature. See Forward Collision
Alert (FCA) System
0342.
Courtesy Gap (If Equipped
with Super Cruise)
Press and Hold
[on the
steering wheel when vehicle is
moving to temporarily increase
the gap with the vehicle ahead
to allow for merging traffic.
Press and Hold
[when
stopped to cancel ACC from
resuming automatically (if the
stop is brief) and remain
stationary. This can be used to
allow traffic to merge between
you and the vehicle ahead.
Press RES+ or the accelerator
pedal to resume ACC.
Following distance gap will
return to the original selection
after hold. Alerting the Driver
If ACC is engaged, driver
action may be required when
ACC cannot apply sufficient
braking because of
approaching a vehicle too
rapidly.
When this condition occurs,
the collision alert symbol will
flash on the windshield. Either
eight beeps will sound from
the front, or both sides of the
Safety Alert Seat will pulse
five times. To view available
settings for this feature, touch
the Settings icon on the
infotainment home page.
Select
“Vehicle” to display the
list of available options and
select “Collision/Detection
Systems”.
See Defensive Driving 0235.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-16500442) -
2023 - CRC - 5/10/22
Driving and Operating 311
Approaching and Following a
Vehicle
The vehicle ahead indicator is
in the instrument cluster and
HUD display, if equipped.
The vehicle ahead indicator
only displays when a vehicle is
detected in your vehicle’s path
moving in the same direction.
If this symbol is not displaying,
ACC will not respond to or
brake to vehicles ahead.
ACC automatically slows the
vehicle down and adjusts
vehicle speed to follow a
detected vehicle ahead at the
selected follow gap. The
vehicle speed increases or
decreases to follow a
detected vehicle in front of
your vehicle when that vehicle
is traveling slower than yourvehicle set speed. It may apply
limited braking, if necessary.
When braking is active, the
brake lamps will come on. The
automatic braking may feel or
sound different than if the
brakes were applied manually.
This is normal.
Passing a Vehicle While
Using ACC
If the set speed is high
enough, and the left turn
signal is used to pass a vehicle
ahead in the selected
following gap, ACC may assist
by gradually accelerating the
vehicle prior to the lane
change.
{Warning
When using ACC to pass a
vehicle or perform a lane
change, the following
distance to the vehicle being
passed may be reduced.
ACC may not apply
sufficient acceleration or
(Continued)
Warning (Continued)
braking when passing a
vehicle or performing a lane
change. Always be ready to
manually accelerate or brake
to complete the pass or lane
change.
Stationary or Very
Slow-Moving Objects
{Warning
ACC may not detect and
react to stopped or
slow-moving vehicles ahead
of you. For example, the
system may not brake for a
vehicle it has never detected
moving. This can occur in
stop-and-go traffic or when
a vehicle suddenly appears
due to a vehicle ahead
changing lanes. Your vehicle
may not stop and could
cause a crash. Use caution
when using ACC. Your (Continued)