service CADILLAC CT5 2023 User Guide

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
74 Seats and Restraints
.The system determines an
infant is present in a child
restraint.
.A front outboard passenger
takes his/her weight off of
the seat for a period of time.
When the passenger sensing
system has turned off the
front outboard passenger
frontal airbag and knee airbag,
the OFF indicator will light and
stay lit as a reminder that the
airbags are off. See Passenger
Airbag Status Indicator 0124.
The passenger sensing
system is designed to turn on
the front outboard passenger
frontal airbag and knee airbag,
anytime the system senses
that a person of adult size is
sitting properly in the front
outboard passenger seat.
When the passenger sensing
system has allowed the airbag
to be enabled, the ON
indicator will light and stay lit
as a reminder that the airbags
are active. For some children, including
children in child restraints, and
for very small adults, the
passenger sensing system
may or may not turn off the
front outboard passenger
frontal airbag and knee airbag,
depending upon the person's
seating posture and body
build. Everyone in the vehicle
who has outgrown child
restraints should wear a seat
belt properly
—whether or not
there is an airbag for that
person.
{Warning
If the airbag readiness light
ever comes on and stays on,
it means that something may
be wrong with the airbag
system. To help avoid injury
to yourself or others, have
the vehicle serviced right
away. See Airbag Readiness
Light 0123 for more
information, including
important safety
information.
If the On Indicator Is Lit
for a Child Restraint
The passenger sensing
system is designed to turn off
the front outboard passenger
frontal airbag and knee airbag,
if the system determines that
an infant is present in a child
restraint. If a child restraint
has been installed and the ON
indicator is lit:
1. Turn the vehicle off.
2. Remove the child restraint from the vehicle.
3. Remove any additional items from the seat such
as blankets, cushions, seat
covers, seat heaters,
or seat massagers.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Seats and Restraints 77
put on an unoccupied seat.
If this is not desired, remove
the object from the seat.
{Warning
Stowing articles under the
passenger seat or between
the passenger seat cushion
and seatback may interfere
with the proper operation of
the passenger sensing
system.
Servicing the
Airbag-Equipped
Vehicle
Airbags affect how the vehicle
should be serviced. There are
parts of the airbag system in
several places around the
vehicle. Your dealer and the
service manual have
information about servicing
the vehicle and the airbag
system. To purchase a service
manual, see Publication
Ordering Information0496.
{Warning
For up to 10 seconds after
the vehicle is turned off and
the battery is disconnected,
an airbag can still inflate
during improper service. You
can be injured if you are
close to an airbag when it
inflates. Avoid yellow
connectors. They are
probably part of the airbag
system. Be sure to follow
proper service procedures,
and make sure the person
performing work for you is
qualified to do so.
Adding Equipment to
the Airbag-Equipped
Vehicle
Adding accessories that
change the vehicle's frame,
bumper system, height, front
end, or side sheet metal may
keep the airbag system from
working properly. The operation of the airbag
system can also be affected
by changing, including
improperly repairing or
replacing, any parts of the
following:
.Airbag system, including
airbag modules, front or side
impact sensors, sensing and
diagnostic module, or airbag
wiring
.Front seats, including
stitching, seams or zippers
.Seat belts
.Steering wheel, instrument
panel, overhead console,
ceiling trim, or pillar
garnish trim
.Inner door seals, including
speakers
Your dealer and the service
manual have information about
the location of the airbag
modules and sensors, sensing
and diagnostic module, and
airbag wiring along with the
proper replacement
procedures.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
78 Seats and Restraints
In addition, the vehicle has a
passenger sensing system for
the front outboard passenger
position, which includes
sensors that are part of the
passenger seat. The
passenger sensing system
may not operate properly if
the original seat trim is
replaced with non-GM covers,
upholstery, or trim; or with GM
covers, upholstery, or trim
designed for a different
vehicle. Any object, such as an
aftermarket seat heater or a
comfort-enhancing pad or
device, installed under or on
top of the seat fabric, could
also interfere with the
operation of the passenger
sensing system. This could
either prevent proper
deployment of the passenger
airbag(s) or prevent the
passenger sensing system
from properly turning off the
passenger airbag(s). See
Passenger Sensing System
072. If the vehicle has rollover
roof-rail airbags, see Different
Size Tires and Wheels
0439
for additional important
information.
If the vehicle must be modified
because you have a disability
and have questions about
whether the modifications will
affect the vehicle's airbag
system, or if you have
questions about whether the
airbag system will be affected
if the vehicle is modified for
any other reason, call
Customer Assistance. See
Customer Assistance Offices
0 487.
Airbag System Check
The airbag system does not
need regularly scheduled
maintenance or replacement.
Make sure the airbag
readiness light is working. See
Airbag Readiness Light 0123.
Caution
If an airbag covering is
damaged, opened, or broken,
the airbag may not work
properly. Do not open or
break the airbag coverings.
If there are any opened or
broken airbag coverings,
have the airbag covering
and/or airbag module
replaced. For the location of
the airbags, see Where Are
the Airbags? 067. See your
dealer for service.
Replacing Airbag
System Parts after a
Crash
{Warning
A crash can damage the
airbag systems in the
vehicle. A damaged airbag
system may not properly
protect you and your
passenger(s) in a crash,
(Continued)

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Seats and Restraints 79
Warning (Continued)
resulting in serious injury or
even death. To help make
sure the airbag systems are
working properly after a
crash, have them inspected
and any necessary
replacements made as soon
as possible.
If an airbag inflates, you will
need to replace airbag system
parts. See your dealer for
service.
If the airbag readiness light
stays on after the vehicle is
started or comes on when you
are driving, the airbag system
may not work properly. Have
the vehicle serviced right
away. See Airbag Readiness
Light 0123.
Child Restraints
Older Children
Older children who have
outgrown booster seats
should wear the vehicle’s seat
belts. Refer to How to Wear
Seat Belts Properly 057.
The manufacturer instructions
that come with the booster
seat state the weight and
height limitations for that
booster. Use a booster seat with a lap-shoulder belt until
the child passes the fit test
below:
.Sit all the way back on the
seat. Do the knees bend at
the seat edge? If yes,
continue. If no, return to the
booster seat.
.Buckle the lap-shoulder belt.
Does the shoulder belt rest
on the shoulder? If yes,
continue. If no, try using the
rear seat belt comfort guide,
if available. See
“Rear Seat
Belt Comfort Guides” under
Lap-Shoulder Belt 060. If a
comfort guide is not
available, or if the shoulder
belt still does not rest on the
shoulder, then return to the
booster seat.
.Does the lap belt fit low and
snug on the hips, touching
the thighs? If yes, continue.
If no, return to the
booster seat.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Instruments and Controls 103
Instruments and
Controls
Controls
Steering WheelAdjustment . . . . . . . . . . . . . . . . . 104
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . 105
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Windshield Wiper/ Washer . . . . . . . . . . . . . . . . . . . . . . 105
Compass . . . . . . . . . . . . . . . . . . . . . 107
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Power Outlets . . . . . . . . . . . . . . 108
Wireless Charging . . . . . . . . . 109
Warning Lights, Gauges,
and Indicators
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . 112
Instrument Cluster (Base
Level) . . . . . . . . . . . . . . . . . . . . . . . . . 113
Instrument Cluster (Uplevel) . . . . . . . . . . . . . . . . . . . . . 115
Speedometer . . . . . . . . . . . . . . . . 119
Odometer . . . . . . . . . . . . . . . . . . . . . 119
Trip Odometer . . . . . . . . . . . . . . . 119
Tachometer . . . . . . . . . . . . . . . . . 120
Fuel Gauge . . . . . . . . . . . . . . . . . . . 120 Engine Coolant
Temperature Gauge
(Base Level) . . . . . . . . . . . . . . . . . 121
Engine Coolant Temperature Gauge
(Uplevel) . . . . . . . . . . . . . . . . . . . . . 122
Seat Belt Reminders . . . . . . 122
Airbag Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . 124
Charging System Light . . . 124
Malfunction Indicator Lamp (Check Engine
Light) . . . . . . . . . . . . . . . . . . . . . . . . . 125
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . 128
Antilock Brake System (ABS) Warning Light . . . . . 128
Performance Shifting Light . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Automatic Vehicle Hold (AVH) Light . . . . . . . . . . . . . . . . . 129
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Automatic Emergency
Braking (AEB) Disabled
Light . . . . . . . . . . . . . . . . . . . . . . . . . 130
Vehicle Ahead Indicator . . . . . . . . . . . . . . . . . . . . 130
Pedestrian Ahead Indicator . . . . . . . . . . . . . . . . . . . . 130
Traction Off Light . . . . . . . . . 130
StabiliTrak OFF Light . . . . . 131
Traction Control System (TCS)/StabiliTrak
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Engine Coolant Temperature Warning
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Driver Mode Control Light . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Tire Pressure Light . . . . . . . 133
Engine Oil Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . 134
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 134
Security Light . . . . . . . . . . . . . . . 135
High-Beam On Light . . . . . . 135
Lamps On Reminder . . . . . . 135
Cruise Control Light . . . . . . 135
Door Ajar Light . . . . . . . . . . . . . 136

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
112 Instruments and Controls
THIS SOFTWARE IS
PROVIDED BY THE
COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING,
BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF
MERCHANTABILITY AND
FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE
COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL,
EXEMPLARY, ORCONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR
BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY
WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF
ADVISED OF THE
POSSIBILITY OF SUCH
DAMAGE.Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious
enough to cause an expensive
repair or replacement. Paying
attention to the warning lights
and gauges could prevent
injury.
Some warning lights come on
briefly when the engine is
started to indicate they are
working. When one of the
warning lights comes on and
stays on while driving, or when
one of the gauges shows
there may be a problem, check
the section that explains what
to do. Waiting to do repairs
can be costly and even
dangerous.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Instruments and Controls 123
If the driver seat belt is
buckled, neither the light nor
the chime comes on.
Front Passenger Seat Belt
Reminder Light
The vehicle may have a front
passenger seat belt reminder
light near the passenger
airbag status indicator. See
Passenger Sensing System
072.
When the vehicle is started,
this light flashes and a chime
may come on to remind
passengers to fasten their
seat belt.
Then the light stays on solid
until the belt is buckled. This
cycle continues several times
if the front passenger remains
or becomes unbuckled while
the vehicle is moving. If the front passenger seat
belt is buckled, neither the
chime nor the light comes on.
The front passenger seat belt
reminder light and chime may
come on if an object is put on
the seat such as a briefcase,
handbag, grocery bag, laptop,
or other electronic device. To
turn off the reminder light
and/or chime, remove the
object from the seat or buckle
the seat belt.
Airbag Readiness
Light
This light shows if there is an
electrical problem with the
airbag system. It is located in
the instrument cluster. The
system check includes the
airbag sensor(s), the
passenger sensing system,
the pretensioners, the airbag
modules, the wiring, and the
crash sensing and diagnostic
module. For more information
on the airbag system, see
Airbag System
065.
The airbag readiness light
comes on for several seconds
when the vehicle is started.
If the light does not come on
then, have it fixed immediately.
{Warning
If the airbag readiness light
stays on after the vehicle is
started or comes on while
driving, it means the airbag
system might not be working
properly. The airbags in the
vehicle might not inflate in a
crash, or they could even
inflate without a crash. To
help avoid injury, have the
vehicle serviced right away.
If there is a problem with the
airbag system, a Driver
Information Center (DIC)
message may also come on.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
124 Instruments and Controls
Passenger Airbag
Status Indicator
The vehicle has a passenger
sensing system. See
Passenger Sensing System
072 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
Light0123 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 CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Instruments and Controls 125
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
0267.
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
Modifications0374.
If the light is flashing : A
malfunction has been
detected that could damage
the emission control system

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
126 Instruments and Controls
and increase vehicle
emissions. Diagnosis and
service may be required.
To help prevent damage,
reduce vehicle speed and
avoid hard accelerations and
uphill grades. If towing a
trailer, reduce the amount of
cargo being hauled as soon as
possible.
If the light continues to flash,
find a safe place to park. Turn
the vehicle off and wait at
least 10 seconds before
restarting the engine. If the
light is still flashing, follow the
previous guidelines and see
your dealer for service as
soon as possible.
If the light is on steady :A
malfunction has been
detected. Diagnosis and
service may be required.
Check the following:
.If fuel has been added to the
vehicle using the capless fuel
funnel adapter, make sure
that it has been removed. See
“Filling the Tank with a
Portable Gas Can” under
Filling the Tank 0362. The
diagnostic system can
detect if the adapter has
been left installed in the
vehicle, allowing fuel to
evaporate into the
atmosphere. A few driving
trips with the adapter
removed may turn off the
light.
.Poor fuel quality can cause
inefficient engine operation
and poor driveability, which
may go away once the
engine is warmed up. If this
occurs, change the fuel
brand. It may require at least
one full tank of the proper
fuel to turn the light off. See
Recommended Fuel (LSY
2.0L L4 Engine) 0360 or
Recommended Fuel (LGY
3.0L V6 and LT4 6.2L
V8 Engines) 0361.
If the light remains on, see
your dealer.
Emissions Inspection and
Maintenance Programs
If the vehicle requires an
Emissions Inspection/
Maintenance test, the test
equipment will likely connect
to the vehicle's Data Link
Connector (DLC).
The DLC is under the
instrument panel to the left of
the steering wheel.
Connecting devices that are
not used to perform an
Emissions Inspection/
Maintenance test or to service
the vehicle may affect vehicle
operation. See Add-On
Electrical Equipment 0372.
See your dealer if assistance
is needed.