Page 217 of 394

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
216 DRIVING AND OPERATING
Once the vehicle speed reaches about
40 km/h (25 mph) or more, press +RES
up to the first detent briefly. The
vehicle returns to the previous set
speed.
Increasing Speed While Cruise
Control is at a Set Speed
If the cruise control system is already
activated:
.Press and hold +RES up until the
desired speed is reached, then
release it.
. To increase vehicle speed in small
increments, briefly press +RES up
to the first detent. For each press,
the vehicle goes about 1 km/h
(1 mph) faster.
. To increase vehicle speed in larger
increments, briefly press +RES up
to the second detent. For each
press, the vehicle speed increases
to the next 5 km/h (5 mph) mark
on the speedometer. The speedometer reading can be
displayed in either English or metric
units. See
Instrument Cluster 0118.
The increment value used depends on
the units displayed.
Reducing Speed While Cruise
Control is at a Set Speed
If the cruise control system is already
activated:
. Press and hold SET− down until
the desired lower speed is reached,
then release it.
. To decrease the vehicle speed in
small increments, briefly press
SET− down to the first detent. For
each press, the vehicle goes about
1 km/h (1 mph) slower.
. To decrease the vehicle speed in
larger increments, briefly press
SET− down to the second detent.
For each press, the vehicle speed
decreases to the next 5 km/h
(5 mph) mark on the speedometer.
The cruise control system may
automatically brake to slow the
vehicle down (CTS model only). The speedometer reading can be
displayed in either English or metric
units. See
Instrument Cluster 0118.
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 previously set cruise
speed. While pressing the accelerator
pedal or shortly following the release
to override cruise control, briefly
pressing SET– will result in cruise
control 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 the vehicle speed.
When going downhill, the cruise
control system may automatically
brake to slow the vehicle down (CTS
model only). Also, you may have to
Page 218 of 394

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
DRIVING AND OPERATING 217
brake or shift to a lower gear to keep
the vehicle speed down. If the brake
pedal is applied, cruise control
disengages.
Ending Cruise Control
There are four ways to end cruise
control:
.Step lightly on the brake pedal.
. Press
*.
. Shift the transmission to
N (Neutral).
. Press
J.
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
If equipped with Adaptive Cruise
Control (ACC), it allows the driver to
select the cruise control set speed and
following gap. 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
0367.
If a vehicle is detected in your path,
ACC can apply acceleration or limited,
moderate braking to maintain the
selected following gap. To disengage
ACC, apply the brake. If ACC is
controlling your vehicle speed when
the Traction Control System (TCS) or
electronic stability control system
activates, the ACC may automatically
disengage. See Traction Control/
Electronic Stability Control 0206. When
road conditions allow ACC to be safely
used, the ACC can be turned back on.
ACC will not engage if the TCS or
electronic stability control system is
disabled.
{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 0178.
{Warning
ACC will not detect or brake for
children, pedestrians, animals,
or other objects.
(Continued)
Page 219 of 394

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
218 DRIVING AND OPERATING
Warning (Continued)
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.
J:Press to turn the system on or
off. A white cruise control indicator
comes on.
+RES : Press the control up briefly to
resume the previous set speed or to
increase vehicle speed if ACC is
already activated. To increase speed
by 1 km/h (1 mph), press +RES up to
the first detent. To increase speed to
the next 5 km/h (5 mph) mark on the
speedometer, press +RES up to the
second detent.
SET– :Press the control down briefly
to set the speed and activate ACC or
to decrease vehicle speed if ACC is
already activated. To decrease speed by 1 km/h (1 mph), press SET−
down
to the first detent. To decrease speed
to the next 5 km/h (5 mph) mark on
the speedometer, press SET− down to
the second detent.
*: Press to disengage ACC without
erasing the set speed from memory.
[: Press to select a following gap
time (or distance) setting for ACC of
Far, Medium, or Near.
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.
ACC IndicatorRegular Cruise
Control Indicator
When ACC is engaged, a green
o
indicator will be lit on the instrument
cluster and the following gap will be
Page 220 of 394

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
DRIVING AND OPERATING 219
displayed. When the regular cruise
control is engaged, a green
J
indicator will be lit on the instrument
cluster; 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 an accident if the brakes are
not applied manually. You and
others could be seriously injured or
killed.Setting Adaptive Cruise Control
If
Jis on when not in use, it could
get pressed and go into ACC when not
desired. Keep
Joff 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.
ACC will not set at a speed less than
25 km/h (16 mph), although it can be
resumed when driving at lower
speeds.
To set ACC:
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.
The ACC indicator displays in the
instrument cluster and Head-Up
Display (HUD) (if equipped). When the
ACC is active, the indicator turns
green.
Be mindful of speed limits,
surrounding traffic speeds, and
weather conditions when selecting the
set speed.
Resuming a Set Speed
If the ACC is set at a desired speed
and then the brakes are applied, the
ACC is disengaged without erasing the
set speed from memory.
To begin using ACC again, press +RES
up briefly. The vehicle returns to the
previous set speed.
Page 221 of 394

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
220 DRIVING AND OPERATING
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– down.
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 cluster and the
Head-Up Display (HUD) (if
equipped).
. Press and hold +RES up until the
desired set speed appears on the
display, then release it.
. To increase vehicle speed in small
increments, press +RES up to the
first detent. For each press, the
vehicle goes 1 km/h (1 mph)
faster.
. To increase vehicle speed in larger
increments, press +RES up to the
second detent. For each press, the vehicle speed increases to the next
5 km/h (5 mph) mark on the
speedometer.
When it is determined that 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.
The speedometer reading can be
displayed in either English or metric
units. See Instrument Cluster 0118.
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– down until
the desired lower speed is reached,
then release it. .
To decrease the vehicle speed in
smaller increments, press SET−
down to the first detent. For each
press, the vehicle goes about
1 km/h (1 mph) slower.
. To decrease the vehicle speed in
larger increments, press SET−
down to the second detent. For
each press, the vehicle speed
decreases to the next 5 km/h
(5 mph) mark on the speedometer.
The speedometer reading can be
displayed in either English or metric
units. See Instrument Cluster 0118.
The increment value used depends on
the units displayed.
Selecting the Follow Distance
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.
Page 222 of 394

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
DRIVING AND OPERATING 221
When pressed, the current gap setting
displays briefly on the instrument
cluster and 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.
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. SeeForward Collision Alert
(FCA) System 0232. Alerting the Driver
Without Head-Up Display
With Head-Up Display
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, a series
of red lights or the collision alert
symbol on the HUD, if equipped, 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. See “Collision/
Detection Systems” underVehicle
Personalization 0144. See
Defensive Driving 0178.
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 indicator 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 the vehicle in front at the
selected follow gap. The vehicle speed
increases or decreases to follow the
vehicle in front of you, but will not
exceed the set speed. It may apply
limited braking, if necessary. When
Page 223 of 394

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
222 DRIVING AND OPERATING
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.
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
complete attention is always
required while driving and you
should be ready to take action and
apply the brakes.ACC Automatically Disengages
ACC may automatically disengage and
the driver will need to manually apply
the brakes to slow the vehicle if:
.
The sensors are blocked.
. The Traction Control System (TCS)
or electronic stability control
system has activated or been
disabled.
. There is a fault in the system.
. The radar falsely reports a
blockage when driving in a desert
or remote area with no other
vehicles or roadside objects. A DIC
message may display to indicate
that ACC is temporarily
unavailable.
The ACC indicator will turn white
when ACC is no longer active.
In some cases, when ACC will not
activate, regular Cruise Control may
be used. See “Switching Between ACC
and Regular Cruise Control ”previously
in this section. Always consider
driving conditions before using either
cruise control system. Notification to Resume ACC
ACC will maintain a follow gap behind
a detected vehicle and slow your
vehicle to a stop behind that vehicle.
If the stopped vehicle ahead has
driven away and ACC has not
resumed, the vehicle ahead indicator
will flash as a reminder to check
traffic before proceeding. In addition,
the left and right sides of the Safety
Alert Seat will pulse three times,
or three beeps will sound. See
”Alert
Type ”and “Adaptive Cruise Go
Notifier” in“Collision/Detection
Systems” underVehicle Personalization
0 144.
When the vehicle ahead drives away,
press +RES or the accelerator pedal to
resume ACC. If stopped for more than
two minutes or if the driver door is
opened and the driver seat belt is
unbuckled, the ACC automatically
applies the Electric Parking Brake
(EPB) to hold the vehicle. The EPB
status light will turn on. See Electric
Parking Brake 0204. To release the
EPB, press the accelerator pedal.
Page 224 of 394

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
DRIVING AND OPERATING 223
A DIC warning message may display
indicating to shift to P (Park) before
exiting the vehicle.
{Warning
If ACC has stopped the vehicle, and
if ACC is disengaged, turned off,
or canceled, the vehicle will no
longer be held at a stop. The vehicle
can move. When ACC is holding the
vehicle at a stop, always be
prepared to manually apply the
brakes.
{Warning
Leaving the vehicle without placing
it in P (Park) can be dangerous. Do
not leave the vehicle while it is
being held at a stop by ACC. Always
place the vehicle in P (Park) and
turn off the ignition before leaving
the vehicle.ACC Override
If using the accelerator pedal while
ACC is active, the ACC indicator turns
blue on the instrument cluster and in
the HUD (if equipped) to indicate that
automatic braking will not occur. ACC
will resume operation when the
accelerator pedal is not being pressed.
{Warning
The ACC will not automatically
apply the brakes if your foot is
resting on the accelerator pedal.
You could crash into a vehicle
ahead of you.
Curves in the Road
{Warning
On curves, ACC may not detect a
vehicle ahead in your lane. You
could be startled if the vehicle
accelerates up to the set speed,
especially when following a vehicle
exiting or entering exit ramps. You (Continued)
Warning (Continued)
could lose control of the vehicle or
crash. Do not use ACC while driving
on an entrance or exit ramp. Always
be ready to use the brakes if
necessary.
{Warning
On curves, ACC may respond to a
vehicle in another lane, or may not
have time to react to a vehicle in
your lane. You could crash into a
vehicle ahead of you, or lose control
of your vehicle. Give extra attention
in curves and be ready to use the
brakes if necessary. Select an
appropriate speed while driving in
curves.
ACC may operate differently in a
sharp curve. It may reduce the vehicle
speed if the curve is too sharp.