2021 CADILLAC CT4 Owner's Manual

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
264 DRIVING AND OPERATING
When the steering wheel is moved
manually, the steering wheel light bar
pulses blue and
^on the instrument
cluster turns blue to indicate Super
Cruise is not steering the vehicle.
When ready to allow Super Cruise to
resume steering again, position the
vehicle in the center of the lane, hold
the steering wheel until the steering
wheel light bar turns green, and then
release the steering wheel when it is
safe to do so.
Super Cruise does not respond to
vehicles in other lanes near your
vehicle.
{Warning
To help prevent crashes before
making a lane change:
.Always check mirrors.
.Glance over your shoulder.
.Use the turn signals. Super Cruise Lane Change
Super Cruise can steer to perform a
single lane change under certain
conditions when requested by the
driver.
To request a lane change:
1. Verify the lane next to your vehicle is clear and conditions are safe to
make a lane change.
2. Use the turn signal lever to activate the turn signal in the direction of
the desired lane change.
3. Return the turn signal lever to the neutral position after the lane
change. See Turn and Lane-Change
Signals 0129.
If Super Cruise detects that traffic
is clear, Super Cruise will steer the
vehicle to perform the lane change.
A message appears on the Driver
Information Center (DIC) during
the lane change to provide more
information on the status of the
lane change. To cancel a lane change, return the
turn signal lever to the neutral
position or move the turn signal lever.
The Super Cruise Lane Change feature
can be enabled or disabled through
the vehicle personalization menu. See
“Super Cruise Lane Change
”under
Vehicle Personalization 0117.
{Warning
Super Cruise Lane Change may not
detect a vehicle in an adjacent lane.
Always supervise the driving task
and monitor traffic conditions when
using the Super Cruise Lane Change
feature. Only request a lane change
when traffic conditions are safe for
a lane change, and always be ready
to manually steer the vehicle. See
“Steering Manually and Changing
Lanes” listed previously in this
section.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
DRIVING AND OPERATING 265
Take Over Alert
{Warning
Super Cruise will not maintain the
vehicle’s speed while the steering
wheel light bar is flashing red.
If the steering wheel light bar
flashes red, immediately resume
manual steering to prevent serious
injury or death. If you do not
resume manual steering, the vehicle
will begin to slow in the same lane
and eventually come to a complete
stop on the road.
Any time the steering wheel light bar
flashes red, resume manual steering
immediately. The instrument cluster
light
^, will also turn red and a
message will display in the Driver
Information Center (DIC). In addition,
beeps will sound, or the Safety Alert
Seat will vibrate. See “Collision/
Detection Systems” underVehicle
Personalization 0117. After you begin
steering manually, then Super Cruise
will disengage. The red flashing steering wheel light
bar could occur under any of the
following conditions:
.Lane markings are poor, or visibility
is limited.
.The Driver Attention System (DAS)
does not detect that the driver's
head and eyes are directed toward
the road.
.ACC is canceled.
.The vehicle is on a tight curve,
or the lanes are too wide, or the
vehicle goes into a curve too fast.
.The compatible road ends.
.The vehicle is approaching an
intersection controlled by a traffic
light, stop sign, or other traffic
control device.
.A Super Cruise system fault occurs.
Attention to the Road
{Warning
Super Cruise is a driver assistance
system and cannot accurately
detect or predict all situations.
Super Cruise is not a crash
avoidance system. To prevent
serious injury or death, you must
supervise the driving task and
monitor the road conditions. You
may need to respond to traffic
events by steering, braking,
or accelerating. See
Defensive
Driving 0204. Super Cruise also
cannot determine whether you are
awake, asleep, impaired, or properly
focused on safe driving. The vehicle
could crash into other vehicles,
drive out of the lane, or drive off
the road. Complete attention is
always required while driving, even
while using Super Cruise. Be
prepared to take over steering or
apply the brakes at any time.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
266 DRIVING AND OPERATING
{Warning
To prevent serious injury or death,
be alert and pay special attention
when passing highway exits,
entrances, and crossings with Super
Cruise, and be ready to take control
of the vehicle when necessary.
Changes in lane markings around
exits and entrances can
momentarily cause Super Cruise to
not detect the correct lane. If this
occurs, Super Cruise may attempt
steering inputs to bring the vehicle
back into the correct lane and, in
rare circumstances, could
over-correct and cause the vehicle
to momentarily cross into a lane
next to your vehicle unless you
manually steer to maintain your
lane position.The Driver Attention System (DAS) on
the steering column continually
monitors driver head and eye position
to estimate driver attention to the
road. The camera does not record or
share pictures, audio, or video.
Sunglasses, hats, or other types of
clothing that change the shape of the
head may interfere with camera
performance. To improve camera
performance, raise or lower the
steering wheel, or change the seat
position.
Pay close attention to the road ahead
to avoid these three increasing alerts:

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
DRIVING AND OPERATING 267
First Alert
.If the steering wheel light bar flashes green, the system has detected that your head and
eyes may not be directed toward the road.
.The flashing will stop when the system detects that your head and eyes appear to be
directed toward the road.
Second Alert
.If the steering wheel light bar flashes green for too long, Super Cruise will alert the driver
to take control of steering immediately by flashing the light bar red. Also, either beeps will
sound or the Safety Alert Seat will vibrate. See “Collision/Detection Systems”underVehicle
Personalization 0117.
.Take over steering, then Super Cruise will disengage.
.To re-engage Super Cruise, press]. See “Using Super Cruise ”previously in this section.
Third Alert
.If the steering wheel light bar flashes red for too long, a voice command will tell you to
take control of the vehicle.
.Take control of the steering immediately; ACC and Super Cruise will disengage.
.A DIC message will indicate that Super Cruise is locked out. Super Cruise cannot be
re-engaged until the next ignition cycle.
.Continued failure to take over steering will cause the vehicle to brake to a stop and OnStar
will be called. The brake lamps and hazard warning flashers will come on.
.Take control of the vehicle and continue driving.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
268 DRIVING AND OPERATING
Stationary or Very Slow-Moving
Objects; Cross-Traffic
{Warning
Super Cruise is not a crash
avoidance system and will not steer
or brake to avoid a crash. Super
Cruise does not steer to prevent a
crash with stopped or slow-moving
vehicles. You must supervise the
driving task and may need to steer
and brake to prevent a crash,
especially in stop-and-go traffic or
when a vehicle suddenly enters
your lane. Always pay attention
when using Super Cruise. Failure to
do so could result in a crash
involving serious injury or death.
Curves in the Road
{Warning
The vehicle could drift out of your
lane of travel. To prevent crashes,
always be ready to manually steer. (Continued)
Warning (Continued)
Super Cruise may not detect your
lane on curves in the road. Super
Cruise may not detect the markings
that show your lane. You may not
have time to react to a vehicle in
the lane next to your vehicle while
on curves in the road.
Super Cruise may operate differently
in sharp curves. It may drift out of
your lane of travel if the curve is too
sharp.
When entering a curve, Super Cruise
may not detect the lane markings and
may not adjust the steering enough to
stay in your lane of travel. When this
happens, you will need to steer the
vehicle.
Super Cruise may detect other lane
markings that are not in your lane
and may or may not steer
appropriately to maintain your lane.
Super Cruise may occasionally provide
an alert and/or steering that is
considered unnecessary. It could
respond to lane markings in different
lanes, signs, guardrails, and other
stationary objects when entering or

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
DRIVING AND OPERATING 269
exiting a curve. This is normal
operation. The vehicle does not need
service.
Other Vehicles Entering Your Lane
Super Cruise may not detect a vehicle
that enters your lane, or may not
brake fast enough to avoid a crash.
You must manually brake and steer
the vehicle.Intersections; Vehicles Crossing the
Road Ahead
Super Cruise will not brake the vehicle
when approaching an intersection that
is controlled by a traffic light or stop
sign. Super Cruise will not detect
vehicles crossing the road ahead,
including at intersections, and will not
automatically steer or brake to
prevent a collision. You must
manually brake and steer the vehicle.
Towing a Trailer
Do not use Super Cruise when towing
a trailer. For towing capability, see
Trailer Towing (LSY 2.0L L4 Engine)
0
300.
Super Cruise on Hills
Do not use Super Cruise while driving
on steep hills. Super Cruise Indicator Light
Summary
The steering wheel light bar and
instrument cluster light provide the
following important information about
Super Cruise operation:

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
270 DRIVING AND OPERATING
Steering WheelLight Bar Instrument Cluster Light Super Cruise Description
Off Off Super Cruise is off. There is no automatic steering. Operate
the vehicle manually.
Off White Super Cruise is available and can be engaged.
Solid Green Solid Green Super Cruise is steering. Pay attention to the road and
vehicle operation.
Flashing Blue Solid Blue Super Cruise is not steering. Operate the vehicle manually.
See
“Steering Manually and Changing Lanes” previously in
this section.
Flashing Green Solid Green Super Cruise has detected you are not paying sufficiently
close attention to the road. Pay attention to the road. See
“Attention to the Road”
previously in this section.
Flashing Red Solid Red Take over steering immediately. Super Cruise will disengage.
See
“Take Over Alert ”previously in this section.
Disengaging Super Cruise
There are two ways to disengage
Super Cruise:
.Press]while your hands are on
the steering wheel. The Super Cruise
steering will disengage.
.Press the brake pedal while your
hands are on the steering wheel.
Both Super Cruise steering and
Adaptive Cruise Control will
disengage. Super Cruise Messages
If
^does not appear,]can be
pressed to display a DIC message as to
why the system is unavailable.
Immediately after a disengagement,
pressing the
]within 10 seconds will
display a DIC message with the reason
for Super Cruise disengagement.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-14584335) -
2021 - CRC - 12/4/20
DRIVING AND OPERATING 271
Super Cruise Message Summary
Unavailable Turn on Adaptive Cruise ControlAdaptive Cruise Control must be on before Super Cruise can
be enabled.
.Set speed is not required before enabling Super Cruise.
.Adaptive Cruise Control is not required to be engaged
before enabling Super Cruise.
Unavailable Freeways Only Super Cruise is disabled because the vehicle is being driven on a road that is not compatible.
Unavailable Lane Ending Super Cruise is disabled because the driving lane is ending.
Unavailable Poor Weather Conditions Super Cruise is disabled due to inclement weather conditions affecting system performance.
Unavailable Set Forward Collision Setting to Alert and Brake Super Cruise is disabled unless Alert and Brake is selected. 1. Select the Settings menu, then Vehicle, then Collision/Detection Systems, and then Forward Collision System.
2. Set Forward Collision to Alert and Brake.