check engine light CADILLAC CT5 2022 User Guide

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
326 DRIVING AND OPERATING
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. SeeMalfunction Indicator
Lamp (Check Engine Light) 0106.
A device connected to the DLC —
such as an aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle systems.
This could affect vehicle operation
and cause a crash. Such devices
may also access information stored
in the vehicle’s systems.
Caution
Some electrical equipment can
damage the vehicle or cause
components to not work and would (Continued)
Caution (Continued)
not be covered by the vehicle
warranty. Always check with your
dealer before adding electrical
equipment.
Add-on equipment can drain the
vehicle's 12-volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see Servicing
the Airbag-Equipped Vehicle 065 and
Adding Equipment to the
Airbag-Equipped Vehicle 065.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
VEHICLE CARE 327
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 328
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . 328
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 328
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 329
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 331
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 336
Engine Oil Life System . . . . . . . . . . . 338
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Manual Transmission Fluid . . . . . 339
Hydraulic Clutch . . . . . . . . . . . . . . . . . 340
Engine Air Filter Life System . . . . 340
Engine Air Cleaner/Filter . . . . . . . . . 341
Cooling System . . . . . . . . . . . . . . . . . . . 343
Engine Overheating . . . . . . . . . . . . . . 347
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 348
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Brake Pad Life System (If Equipped) . . . . . . . . . . . . . . . . . . . . . . . 351
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 352 Battery - North America . . . . . . . . . 353
All-Wheel Drive . . . . . . . . . . . . . . . . . . 354
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 354
Wiper Blade Replacement . . . . . . . 355
Windshield Replacement . . . . . . . . 355
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 356
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . 357
Bulb Replacement
LED Lighting . . . . . . . . . . . . . . . . . . . . . 357
Electrical System
Electrical System Overload . . . . . . 357
Fuses and Circuit Breakers . . . . . . 359
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Instrument Panel Fuse Block . . . . 362
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
All-Season Tires . . . . . . . . . . . . . . . . . . 367
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 368
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . 368
Self-Sealing Tires . . . . . . . . . . . . . . . . . 369
Low-Profile Tires . . . . . . . . . . . . . . . . . 369
Summer Tires . . . . . . . . . . . . . . . . . . . . 369
Tire Sidewall Labeling . . . . . . . . . . . 370 Tire Designations . . . . . . . . . . . . . . . . . 371
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . . . . . 372
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 374
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . 375
Tire Pressure Monitor System . . . 376
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 377
Tire Inspection . . . . . . . . . . . . . . . . . . . 380
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 380
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
Buying New Tires . . . . . . . . . . . . . . . . 382
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 384
Uniform Tire Quality Grading . . . 384
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 385
Wheel Replacement . . . . . . . . . . . . . . 386
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 386
If a Tire Goes Flat . . . . . . . . . . . . . . . . 387
Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 388
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 394
Jump Starting
Jump Starting - NorthAmerica . . . . . . . . . . . . . . . . . . . . . . . . . 394

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
VEHICLE CARE 353
The brake/clutch master cylinder
reservoir is filled with GM approved
DOT 4 brake fluid as indicated on the
reservoir cap. SeeEngine Compartment
Overview 0331 for the location of the
reservoir.
Checking Brake Fluid
Place the vehicle in P (Park) or
Neutral with the parking brake applied
if equipped with a manual
transmission. On a level surface, the
brake fluid level should be between
the minimum and maximum marks
on the brake fluid reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down:
.Normal brake lining wear. When
new linings are installed, the fluid
level goes back up.
.A fluid leak in the brake/clutch
hydraulic system. Have the brake/
clutch hydraulic system fixed. With
a leak, the brakes will not work well.
Always clean the brake fluid reservoir
cap and the area around the cap
before removing it. Do not top off the brake/clutch fluid.
Adding fluid does not correct a leak.
If fluid is added when the linings are
worn, there will be too much fluid
when new brake linings are installed.
Add or remove fluid, as necessary,
only when work is done on the brake/
clutch hydraulic system.
{Warning
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You or
others could be burned, and the
vehicle could be damaged. Add
brake fluid only when work is done
on the brake/clutch hydraulic
system.
When the brake/clutch fluid falls to a
low level, the brake warning light
comes on. See Brake System Warning
Light 0108.
Brake fluid absorbs water over time
which degrades the effectiveness of
the brake fluid. Replace brake fluid at
the specified intervals to prevent
increased stopping distance. See
Maintenance Schedule 0410. What to Add
Use only GM approved DOT 4 brake
fluid from a clean, sealed container.
See
Recommended Fluids and
Lubricants 0420.
{Warning
The wrong or contaminated brake
fluid could result in damage to the
brake system. This could result in
the loss of braking leading to a
possible injury. Always use the
proper GM approved brake fluid.
Caution
If brake fluid is spilled on the
vehicle's painted surfaces, the paint
finish can be damaged. Immediately
wash off any painted surface.
Battery - North America
The original equipment battery is
maintenance free. Do not remove the
cap and do not add fluid.
Refer to the replacement number
shown on the original battery label
when a new battery is needed.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
VEHICLE CARE 395
1. Discharged Battery RemotePositive Terminal
2. Discharged Battery Negative Grounding Point
3. Good Battery Negative Terminal
4. Good Battery Positive Terminal
The jump start positive terminal (4)
and negative post (3) are on the
battery of the vehicle providing the
jump start.
The jump start remote positive
terminal (1) and the remote negative
grounding point (2) for the discharged
battery are on the passenger side of
the vehicle. The positive jump start connection for
the discharged battery is under a
cover. Lift the cover to expose the
terminal.
1. Check the other vehicle. It must have a 12-volt battery with a
negative ground system.
Caution
If the other vehicle does not have a
12-volt system with a negative
ground, both vehicles can be
damaged. Only use a vehicle that
has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake firmly and put the vehicle in P (Park) with an
automatic transmission, or Neutral
with a manual transmission.
Caution
If any accessories are left on or
plugged in during the jump starting
procedure, they could be damaged.
The repairs would not be covered
(Continued)
Caution (Continued)
by the vehicle warranty. Whenever
possible, turn off or unplug all
accessories on either vehicle when
jump starting.
4. Turn the ignition off. Turn off all lights and accessories in both
vehicles, except the hazard warning
flashers if needed.
{Warning
An electric fan can start up even
when the engine is not running and
can injure you. Keep hands,
clothing, and tools away from any
underhood electric fan.
{Warning
Using a match near a battery can
cause battery gas to explode. People
have been hurt doing this, and
some have been blinded. Use a
flashlight if you need more light.
(Continued)

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
402 VEHICLE CARE
Shutter System
The vehicle may have a shutter
system designed to help improve fuel
economy. Always keep the shutter
system clear of debris, snow and ice.
If the check engine light is activated,
please check to see if the shutter
system is clear of debris, snow or ice.
Windshield and Wiper Blades
Clean the outside of the windshield
with glass cleaner.
Clean rubber wiper blades using a
lint-free cloth or paper towel soaked
with windshield washer fluid or a mild
detergent. Wash the windshieldthoroughly when cleaning the blades.
Bugs, road grime, sap, and a buildup
of vehicle wash/wax treatments may
cause wiper streaking.
Replace the wiper blades if they are
worn or damaged. Damage can be
caused by extreme dusty conditions,
sand, salt, heat, sun, snow, and ice.
Weatherstrips
Apply weatherstrip lubricant on
weatherstrips to make them last
longer, seal better, and not stick or
squeak. Lubricate weatherstrips at
least once a year. Hot, dry climates
may require more frequent
application. Black marks from rubber
material on painted surfaces can be
removed by rubbing with a clean
cloth. See
Recommended Fluids and
Lubricants 0420.
Tires
Use a stiff brush with tire cleaner to
clean the tires.
Caution
Using petroleum-based tire dressing
products on the vehicle may
damage the paint finish and/or
tires. When applying a tire dressing,
always wipe off any overspray from
all painted surfaces on the vehicle.
Wheels and Wheel Trim
Use a soft, clean cloth with mild soap
and water to clean the wheels. After
rinsing thoroughly with clean water,
dry with a soft, clean towel. A wax
may then be applied.
Caution
Chrome wheels and chrome wheel
trim may be damaged if the vehicle
is not washed after driving on roads
that have been sprayed with
magnesium chloride or calcium
chloride. These are used on roads
for conditions such as dust control.
Always wash the chrome with soap
and water after exposure.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
418 SERVICE AND MAINTENANCE
Brakes
Brakes stop the vehicle and are crucial
to safe driving.
.Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
.Trained dealer technicians have
access to tools and equipment to
inspect the brakes and recommend
quality parts engineered for the
vehicle.
Fluids
Proper fluid levels and approved fluids
protect the vehicle’s systems and
components. See Recommended Fluids
and Lubricants 0420 for GM approved
fluids.
.Engine oil and windshield washer
fluid levels should be checked at
every fuel fill.
.Instrument cluster lights may come
on to indicate that fluids may be
low and need to be filled. Hoses
Hoses transport fluids and should be
regularly inspected to ensure that
there are no cracks or leaks. With a
multi-point inspection, your dealer
can inspect the hoses and advise if
replacement is needed.
Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage. The
brake lamps need to be checked
periodically to ensure that they light
when braking.
.With a multi-point inspection, your
dealer can check the lamps and
note any concerns.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
.Signs of wear may include steering
wheel vibration, bounce/sway while
braking, longer stopping distance,
or uneven tire wear.
.As part of the multi-point
inspection, trained dealer
technicians can visually inspect the
shocks and struts for signs of
leaking, blown seals, or damage, and
can advise when service is needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel, and
can reduce the risk of tire failure.
.Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord or
fabric showing through the rubber;
cracks or cuts in the tread or
sidewall; or a bulge or split in
the tire.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
INDEX 453
IndexA
Accessories and Modifications . . . . . 328
Accessory Power . . . . . . . . . . . . . . . . . . . . 243
Active Fuel Management . . . . . . . . . . . 244
Active Rev Match . . . . . . . . . . . . . . . . . . . 253
Adaptive Cruise Control . . . . . . . . . . . . 270
Add-On Electrical Equipment . . . . . . 326
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 446
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 417
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . 39
Thigh Support . . . . . . . . . . . . . . . . . . . . . 38
Agreements Trademarks and License . . . . . . . . . 199
Air Cleaner/Filter, Engine . . . . . . . . . . 341
Air Conditioning . . . . . . . . . . . . . . . . . . . . 209
Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . . . 340
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . . . . . 214
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
How Does an Airbag Restrain? . . . . 59
Passenger Sensing System . . . . . . . . 61 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . . . . . 60
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Where Are the Airbags? . . . . . . . . . . . 57
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Passenger Status Indicator . . . . . . . 105
Readiness Light . . . . . . . . . . . . . . . . . . . 105
Servicing Airbag-Equipped
Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
System Check . . . . . . . . . . . . . . . . . . . . . . 55
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . 22
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . 310
Rear Cross Traffic . . . . . . . . . . . . . . . . . 304
Rear Pedestrian . . . . . . . . . . . . . . . . . . . 303
Side Blind Zone (SBZA) . . . . . . . . . . 310
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 367
All-Wheel Drive System . . . . . . . . . . . . . . . . . . . . . . 254
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . 354
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . 149

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
INDEX 455
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . 386
ChargingWireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Charging System Light . . . . . . . . . . . . . 106
Check Engine Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 106
Child Restraints Infants and Young Children . . . . . . . 68
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . . . . . 74
Older Children . . . . . . . . . . . . . . . . . . . . . 67
Securing . . . . . . . . . . . . . . . . . . . . . . . . 80, 82
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 359
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 399
Interior Care . . . . . . . . . . . . . . . . . . . . . . 404
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . 209
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Cluster, Instrument . . . . . . . . . . . . . . 96, 98
Clutch, Hydraulic . . . . . . . . . . . . . . . . . . . 340
Collision Damage Repair . . . . . . . . . . . 438
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Competitive Driving Mode . . . . . . . . . 265 Composite Materials . . . . . . . . . . . . . . . . 237
Compressor Kit, Tire Sealant . . . . . . . 388
Connected Services
Connections . . . . . . . . . . . . . . . . . . . . . . . 450
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 452
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 450
Connections
Connected Services . . . . . . . . . . . . . . . 450
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Control of a Vehicle . . . . . . . . . . . . . . . . 218
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . 146
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 26
Coolant Engine TemperatureGauge . . . . . . . . . . . . . . . . . . . . . . 103, 104
Engine Temperature Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Cooling System . . . . . . . . . . . . . . . . . . . . . 343
Cornering Lamps . . . . . . . . . . . . . . . . . . . 139
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 139
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 437
Coverage Explanations . . . . . . . . . . . . . 171
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 268 Cruise Control (cont'd)
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Cruise Control, Adaptive . . . . . . . . . . . 270
Cruise Control, Super . . . . . . . . . . . . . . . 279
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Customer Assistance . . . . . . . . . . . . . . . 433 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433
Text Telephone (TTY) Users . . . . . 433
Customer Information Publications OrderingInformation . . . . . . . . . . . . . . . . . . . . . . 440
Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 431
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . 442
D
Damage Repair, Collision . . . . . . . . . . . 438
Danger, Warning, and Caution . . . . . . . . 2
Data Collection Infotainment System . . . . . . . . . . . . . 443
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
Data Recorder
Performance . . . . . . . . . . . . . . . . . . . . . . . 177
Data Recorders, Event . . . . . . . . . . . . . . 442
Database Coverage Explanations . . . . . . . . . . . . . . . . . . . . . . 171
Daytime Running Lamps (DRL) . . . 137
Defensive Driving . . . . . . . . . . . . . . . . . . . 217

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
456 INDEX
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 16
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . 163
DiagnosticsConnected Services . . . . . . . . . . . . . . . 452
Differential, Limited-Slip . . . . . . . . . . . 267
Distracted Driving . . . . . . . . . . . . . . . . . . 217
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 139
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . 116
Delayed Locking . . . . . . . . . . . . . . . . . . . 16
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . 16
Drive Belt Routing, Engine . . . . . . . . . 430
Drive Systems All-Wheel Drive . . . . . . . . . . . . . 254, 354
Driver
Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Driver Assistance Systems . . . . . . . . . 294
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . .116, 119
Driver Mode Control . . . . . . . . . . . . . . . . 259
Driver Mode Control Light . . . . . . . . . 112
Driving
Assistance Systems . . . . . . . . . . . . . . . 304
Better Fuel Economy . . . . . . . . . . . . . 216
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 320
Competitive . . . . . . . . . . . . . . . . . . . . . . . 265 Driving (cont'd)
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Hill and Mountain Roads . . . . . . . . 231
If the Vehicle is Stuck . . . . . . . . . . . . 232
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Loss of Control . . . . . . . . . . . . . . . . . . . . 220
Off-Road Recovery . . . . . . . . . . . . . . . . 219
Track Events and
Competitive . . . . . . . . . . . . . . . . . . . . . . 220
Vehicle Load Limits . . . . . . . . . . . . . . 233
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 230
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . 209
E
Electric Brake Boost . . . . . . . . . . . . . . . . 254
Electric Parking Brake . . . . . . . . . . . . . . 255
Electric Parking Brake Light . . . . . . . 108
Electrical Equipment, Add-On . . . . . 326
Electrical SystemEngine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
Fuses and Circuit Breakers . . . . . . . 359
Instrument Panel Fuse Block . . . . 362
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365 Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 445
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 341
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 106
Compartment Overview . . . . . . . . . . 331
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 103, 104
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 112
Cooling System . . . . . . . . . . . . . . . . . . . 343
Drive Belt Routing . . . . . . . . . . . . . . . . 430
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Oil Life System . . . . . . . . . . . . . . . . . . . . 338
Oil Pressure Light . . . . . . . . . . . . . . . . . 114
Overheating . . . . . . . . . . . . . . . . . . . . . . . 347
Power Messages . . . . . . . . . . . . . . . . . . 126
Running While Parked . . . . . . . . . . . 246
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Engine Air Filter Life System . . . . . . 340
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 140
Equipment, Towing . . . . . . . . . . . . . . . . . 325
Event Data Recorders . . . . . . . . . . . . . . 442
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 141
Extended Parking . . . . . . . . . . . . . . . . . . . 245
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 54

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-15268585) -
2022 - CRC - 10/11/21
458 INDEX
Headlamps (cont'd)High-Beam On Light . . . . . . . . . . . . . . 115
High/Low Beam Changer . . . . . . . . . 137
Lamps On Reminder . . . . . . . . . . . . . . 115
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . 89
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 28
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
High-Beam On Light . . . . . . . . . . . . . . . . 115
High-Speed Operation . . . . . . . . . . . . . . 375
Hill and Mountain Roads . . . . . . . . . . 231
Hill Start Assist (HSA) . . . . . . . . . . . . . 257
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
How to Wear Seat Belts Properly . . . 48
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Hydraulic Clutch . . . . . . . . . . . . . . . . . . . . 340
I
If the System Needs Service . . . . . . . 171
Ignition Positions . . . . . . . . . . . . . . . . . . . 238
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Indicator
Pedestrian Ahead . . . . . . . . . . . . . . . . . 111 Indicator (cont'd)
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . 110
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Information Publication Ordering . . . . . . . . . . . . . 440
Infotainment System . . . . . . . . . . . . . . . 443
Instrument Cluster . . . . . . . . . . . . . . 96, 98
Instrument Panel Overview . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . 28
Introduction . . . . . . . . . . . . . . . . . . . . . . 1, 143
J
Jump Starting - North America . . . . 394
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . 7
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 370
Lamps Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Daytime Running (DRL) . . . . . . . . . . 137
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Exterior Controls . . . . . . . . . . . . . . . . . . 135
Exterior Lamps Off Reminder . . . . 137 Lamps (cont'd)
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 106
On Reminder . . . . . . . . . . . . . . . . . . . . . . 115
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Lane Change Alert (LCA) . . . . . . . . . . . 310
Lane Keep Assist (LKA) . . . . . . . . . . . . 312
Lane Keep Assist Light . . . . . . . . . . . . . 110
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 50
LATCH System Replacing Parts after a Crash . . . . . 80
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . 74
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 357
Light
Performance Shifting . . . . . . . . . . . . . 109
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Illumination Control . . . . . . . . . . . . . . 139
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
Lights Airbag Readiness . . . . . . . . . . . . . . . . . 105
Antilock Brake System (ABS)Warning . . . . . . . . . . . . . . . . . . . . . . . . . 109
Automatic Vehicle Hold . . . . . . . . . . 110