stop start CADILLAC CT5 2023 Service Manual

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Vehicle Care 397
Caution
If the pressure cap is not
tightly installed, coolant loss
and engine damage may
occur. Be sure the cap is
properly and tightly secured.
3.0L V6 Engine and 6.2L
V8 Engine
1. Remove the coolant surgetank pressure cap when
the cooling system,
including the coolant surge
tank pressure cap and
upper radiator hose, is no
longer hot. Turn the pressure cap
slowly counterclockwise.
If you hear a hiss, wait for
that to stop. This will allow
any pressure still left to be
vented out the
discharge hose.
2. Keep turning the pressure cap slowly and remove it.
2.0L L4 Engine and 3.0L V6 Engine Coolant Surge Tank
6.2L V8 Engine Coolant Surge Tank
3. Fill the surge tank with the proper mixture to the
indicated level mark.
4. With the coolant surge tank pressure cap off,
start the engine and let it
run until you can feel the
upper radiator hose
getting hot. Watch out for
the engine cooling fan.
By this time, the coolant
level inside the coolant
surge tank may be lower.
If the level is lower, add
more of the proper mixture

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
406 Vehicle Care
charger. If available, use the
AGM setting on the charger,
to limit charge voltage to
14.8 volts. Follow the charger
manufacturer's instructions.
For replacement of the
battery, see your dealer.
Stop/Start System
This vehicle has a Stop/Start
system to shut off the engine
to help conserve fuel. See
Stop/Start System0270.
{Warning
WARNING: Battery posts,
terminals and related
accessories can expose you
to chemicals including lead
and lead compounds, which
are known to the State of
California to cause cancer
and birth defects or other
reproductive harm. Wash
hands after handling. For
more information go to
www.P65Warnings.ca.gov. See the warning on the back
cover.
Vehicle Storage
{Warning
Batteries have acid that can
burn you and gas that can
explode. You can be badly
hurt if you are not careful.
See Jump Starting - North
America
0452 for tips on
working around a battery
without getting hurt.
Infrequent Usage: Remove the
black, negative (−) cable from
the battery to keep the
battery from running down.
Extended Storage: Remove
the black, negative (−) cable
from the battery or use a
battery trickle charger.
All-Wheel Drive
If the vehicle is equipped with
All-Wheel-Drive (AWD), this is
an additional system that
needs lubrication.
Transfer Case
Under normal driving
conditions, transfer case fluid
does not require maintenance
unless there is a fluid leak or
unusual noise. If required, have
the transfer case serviced by
your dealer.
Park Brake and
P (Park) Mechanism
Check
{Warning
When you are doing this
check, the vehicle could
begin to move. You or
others could be injured and
property could be damaged.
Make sure there is room in
front of the vehicle in case it
begins to roll. Be ready to
apply the regular brake at
once should the vehicle
begin to move.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Vehicle Care 431
significantly under-inflated tire
causes the tire to overheat
and can lead to tire failure.
Under-inflation also reduces
energy efficiency and tire
tread life, and may affect the
vehicle's handling and
stopping ability.
Please note that the TPMS is
not a substitute for proper tire
maintenance, and it is the
driver's responsibility to
maintain correct tire pressure,
even if under-inflation has not
reached the level to trigger
illumination of the TPMS low
tire pressure telltale.
Your vehicle has also been
equipped with a TPMS
malfunction indicator to
indicate when the system is
not operating properly. The
TPMS malfunction indicator is
combined with the low tire
pressure telltale. When the
system detects a malfunction,
the telltale will flash for
approximately one minute and
then remain continuouslyilluminated. This sequence will
continue upon subsequent
vehicle start-ups as long as
the malfunction exists.
When the malfunction
indicator is illuminated, the
system may not be able to
detect or signal low tire
pressure as intended. TPMS
malfunctions may occur for a
variety of reasons, including
the installation of replacement
or alternate tires or wheels on
the vehicle that prevent the
TPMS from functioning
properly. Always check the
TPMS malfunction telltale
after replacing one or more
tires or wheels on your vehicle
to ensure that the
replacement or alternate tires
and wheels allow the TPMS to
continue to function properly.
See Tire Pressure Monitor
Operation
0431.
See Radio Frequency
Statement 0496.Tire Pressure Monitor
Operation
This vehicle may have a Tire
Pressure Monitor System
(TPMS). The TPMS is designed
to warn the driver when a low
tire pressure condition exists.
TPMS sensors are mounted
onto each tire and wheel
assembly, excluding the spare
tire and wheel assembly. The
TPMS sensors monitor the air
pressure in the tires and
transmit the tire pressure
readings to a receiver located
in the vehicle.
When a low tire pressure
condition is detected, the
TPMS illuminates the low tire
pressure warning light located
on the instrument cluster.
If the warning light comes on,

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
432 Vehicle Care
stop as soon as possible and
inflate the tires to the
recommended pressure
shown on the Tire and
Loading Information label. See
Vehicle Load Limits0261.
A message to check the
pressure in a specific tire
displays in the Driver
Information Center (DIC). The
low tire pressure warning light
and the DIC warning message
come on at each ignition cycle
until the tires are inflated to
the correct inflation pressure.
Using the DIC, tire pressure
levels can be viewed. For
additional information and
details about the DIC
operation and displays see
Driver Information Center
(DIC) (Base Level) 0136 or
Driver Information Center
(DIC) (Uplevel) 0139.
The low tire pressure warning
light may come on in cool
weather when the vehicle is
first started, and then turn off
as the vehicle is driven. This could be an early indicator
that the air pressure is getting
low and needs to be inflated to
the proper pressure.
A Tire and Loading
Information label, attached to
your vehicle, shows the size of
the original equipment tires
and the correct inflation
pressure for the tires when
they are cold. See Vehicle
Load Limits
0261, for an
example of the Tire and
Loading Information label and
its location. Also see Tire
Pressure 0427.
The TPMS can warn about a
low tire pressure condition but
it does not replace normal tire
maintenance. See Tire
Inspection 0435, Tire Rotation
0 435, and Tires 0418.
Caution
Tire sealant materials are
not all the same.
A non-approved tire sealant
could damage the TPMS
(Continued)
Caution (Continued)
sensors. TPMS sensor
damage caused by using an
incorrect tire sealant is not
covered by the vehicle
warranty. Always use only
the GM approved tire
sealant available through
your dealer or included in
the vehicle.
Factory-installed Tire Inflator
Kits use a GM-approved liquid
tire sealant. Using
non-approved tire sealants
could damage the TPMS
sensors. See Tire Sealant and
Compressor Kit 0444 for
information regarding the
inflator kit materials and
instructions.
TPMS Malfunction Light
and Message
The TPMS will not function
properly if one or more of the
TPMS sensors are missing or
inoperable. When the system
detects a malfunction, the low

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
434 Vehicle Care
When the recommended
pressure is reached, the
horn sounds once and the
turn signal lamp will stop
flashing and briefly turn
solid.
Repeat these steps for all
underinflated tires that have
illuminated the low tire
pressure warning light.
{Warning
Overinflating a tire could
cause the tire to rupture
and you or others could be
injured. Do not exceed the
maximum pressure listed on
the tire sidewall. See Tire
Sidewall Labeling 0422 and
Vehicle Load Limits 0261.
If the tire is overinflated by
more than 35 kPa (5 psi), the
horn will sound multiple times
and the turn signal lamp will
continue to flash for several
seconds after filling stops. To
release and correct the
pressure, while the turn signal lamp is still flashing, briefly
press the center of the valve
stem. When the recommended
pressure is reached, the horn
sounds once.
If the turn signal lamp does
not flash within 15 seconds
after starting to inflate the
tire, the tire fill alert has not
been activated or is not
working.
If the hazard warning flashers
are on, the tire fill alert visual
feedback will not work
properly.
The TPMS will not activate the
tire fill alert properly under the
following conditions:
.There is interference from
an external device or
transmitter.
.The air pressure from the
inflation device is not
sufficient to inflate the tire.
.There is a malfunction in
the TPMS.
.There is a malfunction in the
horn or turn signal lamps.
.The identification code of
the TPMS sensor is not
registered to the system.
.The battery of the TPMS
sensor is low.
If the tire fill alert does not
operate due to TPMS
interference, move the vehicle
about 1 m (3 ft) back or
forward and try again. If the
tire fill alert feature is not
working, use a tire pressure
gauge.
TPMS Sensor Matching
Process —Auto Learn
Function
Each TPMS sensor has a
unique identification code. The
identification code needs to be
matched to a new tire/wheel
position after rotating the
tires or replacing one or more
of the TPMS sensors. When a
tire is installed, the vehicle
must be stationary for about
20 minutes before the system
recalculates. The following
relearn process takes up to

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
510 Connected Services
vehicles, Wi-Fi can also be
managed from the Wi-Fi
Hotspot menu.
MyCadillac Mobile App
(If Available)
Download the myCadillac
mobile app to compatible
Apple and Android
smartphones. Cadillac users
can access the following
services from a smartphone:
.Remotely start/stop the
vehicle, if factory-equipped.
.Lock/unlock doors,
if equipped with automatic
locks.
.Activate the horn and lamps.
.Check the vehicle fuel level,
oil life, or tire pressure,
if factory-equipped with the
Tire Pressure Monitor
System.
.Send destinations to the
vehicle.
.Locate the vehicle on a map
(U.S. market only).
.Turn the vehicle's Wi-Fi
hotspot on/off, manage
settings, and monitor data
consumption, if equipped.
.Locate a dealer and
schedule service.
.Request Roadside
Assistance.
.Set a parking reminder with
pin drop, take a photo, make
a note, and set a timer.
.Connect with Cadillac on
social media.
Features are subject to
change. For myCadillac mobile
app information and
compatibility, see
my.cadillac.com.
An active OnStar or
connected service plan may be
required. A compatible device,
factory-installed remote start,
and power locks are required.
Data rates apply. See
www.onstar.com for details
and system limitations.
Remote Services
Contact an OnStar Advisor to
unlock the doors or sound the
horn and flash the lamps.
Marketplace
OnStar Advisors can provide
offers from restaurants and
retailers on your route, help
locate hotels, or book a room.
These services vary by
market.
Diagnostics
By monitoring and reporting
on the vehicle’s key systems,
OnStar Advanced Diagnostics,
if equipped, provides a way to
keep up on maintenance.
Capabilities vary by model. See
www.onstar.com for details
and system limitations.
Features are subject to
change. For updates on
feature capabilities, see
my.cadillac.com. Message and
data rates may apply.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/11/22
522 INDEX
Service (cont'd)Parts Identification . . . . . . . . 481
Scheduling
Appointments . . . . . . . . . . . . . 492
Services Special Application . . . . . . . . 475
Servicing System . . . . . . . . . . . . . 192
Servicing the Airbag . . . . . . . . . . 77
Settings . . . . . . . . . . . . . . . . . . . . . . . . . 215
Shifting
Into Park . . . . . . . . . . . . . . . . . . . . . . 273
Out of Park . . . . . . . . . . . . . . . . . . . 274
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . . 353
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . 156
Software Updates . . . . . . . . . . . 168
Special Application Services . . . . . . . . . . . . . . . . . . . . . . 475
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . 482
Speedometer . . . . . . . . . . . . . . . . . . .119
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 131
Start Assist, Hill . . . . . . . . . . . . . . 289
Start Vehicle, Remote . . . . . . . . 16
Starting the Engine . . . . . . . . . 269
Steering . . . . . . . . . . . . . . . . . . . . . . . . 244 Steering (cont'd)
Column Lock . . . . . . . . . . . . . . . . . . . 31
Heated Wheel . . . . . . . . . . . . . . . 105
Wheel Adjustment . . . . . . . . . 104
Wheel Controls . . . . . . . . . . . . . 165
Stop/Start System . . . . . . . . . . 270
Storage Center Console . . . . . . . . . . . . . 101
Compartments . . . . . . . . . . . . . . 100
Cupholders . . . . . . . . . . . . . . . . . . . 100
Glove Box . . . . . . . . . . . . . . . . . . . . . 100
Umbrella . . . . . . . . . . . . . . . . . . . . . . 101
Storing the Tire Sealant and Compressor Kit . . . . . . . . 451
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408
Stuck Vehicle . . . . . . . . . . . . . . . . . . 261
Summer Tires . . . . . . . . . . . . . . . . 422
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 40
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Super Cruise . . . . . . . . . . . . . . . . . . . 317
Surround Video Recorder . . . . . . . . . . . . . . . . . . . . . 358
Surround Vision System . . . . . . . . . . . . . . . . . . . . . . . . 337
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Navigation . . . . . . . . . . . . . . . . . . . . 183 System
Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Brake Pad Life . . . . . . . . . . . . . 403
Driver Assistance . . . . . . . . . 334
Engine Air Filter Life . . . . . . 389
Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . 346
Global Positioning . . . . . . . . . . 191
Infotainment . . . . . . . . . . . . . . . . 500
Rear Cross Traffic Alert . . . . . . . . . . . . . . . . . . . . . . . . . 346
Surround Vision . . . . . . . . . . . . 337
T
Tachometer . . . . . . . . . . . . . . . . . . . . 120
Teen Driver . . . . . . . . . . . . . . . . . . . . . 219
Text Telephone (TTY) Users . . . . . . . . . . . . . . . . . . . . . . . . . . 488
Theft-Deterrent Systems . . . . 31 Immobilizer . . . . . . . . . . . . . . . . . . . . . 31
Thigh Support
Adjustment . . . . . . . . . . . . . . . . . . . . 45
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418 All-Season . . . . . . . . . . . . . . . . . . . . 419
Buying New Tires . . . . . . . . . . 437
Chains . . . . . . . . . . . . . . . . . . . . . . . . 442
Designations . . . . . . . . . . . . . . . . 423