air filter CADILLAC XTS 2018 Owner's Manual

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
160 CLIMATE CONTROLS
Climate Controls
Climate Control Systems
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Rear Climate Control System . . . . 165
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Maintenance
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Climate Control Systems
Dual Automatic Climate Control System
The climate control buttons on the center stack and on the climate control
display are used to adjust the heating, cooling, and ventilation.
Center Stack Climate Controls
1. Driver and Passenger Temperature Controls
2. Fan Control
3. OFF (Fan)
4. Driver and Passenger Heated and Ventilated Seats (If Equipped) 5. Recirculation
6. Rear Window Defogger
7. Defrost
8. AUTO (Automatic Operation)

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
CLIMATE CONTROLS 167
Move the slider knobs (2) to change
the direction of the airf low.
Additional air vents are beneath the
windshield and the driver and
passenger side door windows. These
are fixed and cannot be adjusted.Operation Tips
.
Clear away any ice, snow, or leaves
from air inlets at the base of the
windshield that could block the
flow of air into the vehicle.
. Clear snow off the hood to
improve visibility and help
decrease moisture drawn into the
vehicle.
. Keep the path under the front
seats clear of objects to help
circulate the air inside of the
vehicle more effectively.
. Use of non-GM approved hood
deflectors can adversely affect the
performance of the system. Check
with your dealer before adding
equipment to the outside of the
vehicle.
. Do not attach any devices to the
air vent slats. This restricts airflow
and may cause damage to the air
vents.
Maintenance
Passenger Compartment
Air Filter
The filter reduces dust, pollen, and
other airborne irritants from outside
air that is pulled into the vehicle. The
filter should be replaced as part of
routine scheduled maintenance. See
Maintenance Schedule 0317.
See your dealer regarding replacement
of the filter.
Service
This vehicle may have the new
environmentally friendly refrigerant,
R1234yf. This refrigerant has a
significantly reduced global warming
impact on the environment, compared
to the traditional automotive
refrigerant, R-134a. All vehicles have a
label underhood that identifies the
refrigerant used in the vehicle.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
232 VEHICLE CARE
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 233
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 233
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . 234
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 234
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 234
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 236
Engine Cover . . . . . . . . . . . . . . . . . . . . . . 239
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 240
Engine Oil Life System . . . . . . . . . . . 242
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Engine Air Cleaner/Filter . . . . . . . . . 243
Cooling System . . . . . . . . . . . . . . . . . . . 245
Engine Overheating . . . . . . . . . . . . . . 249
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . 250
Power Steering Fluid (LFX with FWD) . . . . . . . . . . . . . . . . . . . . . . 250 Power Steering Fluid (LF3 and
LFX with AWD) . . . . . . . . . . . . . . . . . 250
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 251
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 253
Battery - North America . . . . . . . . . 254
All-Wheel Drive . . . . . . . . . . . . . . . . . . 254
Starter Switch Check . . . . . . . . . . . . . 254
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . 255
Wiper Blade Replacement . . . . . . . 255
Windshield Replacement . . . . . . . . 256
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 256
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 258
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 258
LED Lighting . . . . . . . . . . . . . . . . . . . . . 258
Back-Up Lamps . . . . . . . . . . . . . . . . . . . 258
License Plate Lamp . . . . . . . . . . . . . . 259
Electrical System
Electrical System Overload . . . . . . 259
Fuses and Circuit Breakers . . . . . . 260
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 Instrument Panel Fuse Block . . . . 263
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
All-Season Tires . . . . . . . . . . . . . . . . . . 268
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 268
Low-Profile Tires . . . . . . . . . . . . . . . . . 268
Summer Tires . . . . . . . . . . . . . . . . . . . . 269
Tire Sidewall Labeling . . . . . . . . . . . 269
Tire Designations . . . . . . . . . . . . . . . . . 271
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . . . . . 272
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 274
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . 276
Tire Pressure Monitor System . . . 276
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 277
Tire Inspection . . . . . . . . . . . . . . . . . . . 280
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 280
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Buying New Tires . . . . . . . . . . . . . . . . 282
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Uniform Tire Quality Grading . . . 284
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Wheel Replacement . . . . . . . . . . . . . . 285

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
VEHICLE CARE 237
1.Engine Air Cleaner/Filter 0243.
2. Power Steering Fluid Reservoir (Under Engine Cover) (If
Equipped).
See Power Steering Fluid (LFX with
FWD) 0250 orPower Steering
Fluid (LF3 and LFX with AWD)
0 250.
3. Engine Oil Fill Cap. See Engine Oil
0 240.
4. Engine Oil Dipstick (Out of View). See Engine Oil0240.
5. Engine Cover 0239.
6. Engine Cooling Fans (Out of View). See Cooling System 0245.
7. Brake Fluid Reservoir. See Brake
Fluid 0253.
8. Engine Coolant Surge Tank and Pressure Cap. See Cooling System
0 245.
9. Battery - North America 0254
(Battery Cover not Shown).
10. Remote Positive (+) Terminal (Battery Cover not Shown). See
Jump Starting - North America
0301. 11.
Engine Compartment Fuse Block
0260.
12. Remote Negative (−) Terminal (Out of View). See Jump Starting -
North America 0301.
13. Windshield Washer Fluid Reservoir. See Washer Fluid
0 251.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
VEHICLE CARE 239
1.Engine Air Cleaner/Filter 0243.
2. Power Steering Fluid Reservoir (Under Engine Cover).
See Power Steering Fluid (LFX with
FWD) 0250 orPower Steering
Fluid (LF3 and LFX with AWD)
0 250.
3. Engine Oil Fill Cap. See Engine Oil
0 240.
4. Engine Oil Dipstick. See Engine
Oil 0240.
5. Engine Cover 0239.
6. Engine Cooling Fans (Out of View). See Cooling System 0245.
7. Charged Air Coolant Bottle and Pressure Cap. See Cooling System
0 245.
8. Brake Fluid Reservoir. See Brake
Fluid 0253.
9. Engine Coolant Surge Tank and Pressure Cap. See Cooling System
0 245.
10. Battery - North America 0254
(Battery Cover not Shown). 11. Remote Positive (+) Terminal
(Battery Cover not Shown). See
Jump Starting - North America
0301.
12. Engine Compartment Fuse Block
0260.
13. Windshield Washer Fluid Reservoir. See Washer Fluid
0 251.
14. Remote Negative (−) Terminal (Out of View). See Jump Starting -
North America 0301.Engine Cover
3.6L V6 Engine
1. Engine Oil Fill Cap
2. Engine Cover Bolt
3. Engine Cover
To remove:
1. Remove the oil fill cap (1).
2. Remove the engine cover bolt (2).
3. Raise the engine cover (3) to release it from the retainers.
4. Lift and remove the engine cover.
5. Reverse Steps 1–4 to reinstall the engine cover.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
VEHICLE CARE 243
the oil life system might indicate that
an oil change is not necessary for up
to a year. The engine oil and filter
must be changed at least once a year
and at this time the system must be
reset. Your dealer has trained service
people who will perform this work and
reset the system. It is also important
to check the oil regularly over the
course of an oil drain interval and
keep it at the proper level.
If the system is ever reset accidentally,
the oil must be changed at 5 000 km
(3,000 mi) since the last oil change.
Remember to reset the oil life system
whenever the oil is changed.
How to Reset the Engine Oil Life
System
Reset the system whenever the engine
oil is changed so that the system can
calculate the next engine oil change.
To reset the system:1. Using the DIC buttons, display REMAINING OIL LIFE on the
DIC. See Driver Information Center
(DIC) 0136. 2. Press and hold SEL to clear the
CHANGE ENGINE OIL SOON
message and reset the oil life
at 100%.
Be careful not to reset the oil life
display accidentally at any time
other than after the oil is
changed. It cannot be reset
accurately until the next oil
change.
The oil life system can also be reset as
follows: 1. Display REMAINING OIL LIFE on the DIC. See Driver Information
Center (DIC) 0136.
2. Fully press and release the accelerator pedal three times
within five seconds.
If the CHANGE ENGINE OIL
SOON message is not on, the
system is reset.
The system is reset when the
CHANGE ENGINE OIL SOON message
is off. If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, the engine oil life
system has not been reset. Repeat the
procedure.
Automatic Transmission
Fluid
A transmission fluid leak is the only
reason for fluid loss. If a leak occurs,
take the vehicle to your dealer and
have it repaired as soon as possible.
See your dealer to have the fluid and
filter changed at the intervals listed in
the
Maintenance Schedule 0317.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the
engine compartment on the passenger
side of the vehicle. See Engine
Compartment Overview 0236.
When to Inspect the Engine Air
Cleaner/Filter
For intervals on changing and
inspecting the engine air cleaner/filter,
see Maintenance Schedule 0317.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
244 VEHICLE CARE
How to Inspect the Engine Air
Cleaner/Filter
Do not start the engine or have the
engine running with the engine air
cleaner/filter housing open. Before
removing the engine air cleaner/filter,
make sure that the engine air cleaner/
filter housing and nearby components
are free of dirt and debris. Remove the
engine air cleaner/filter. Lightly tap
and shake the engine air cleaner/filter
(away from the vehicle), to release
dust and dirt. Inspect the engine air
cleaner/filter for damage, and replace
if damaged. Do not clean the engine
air cleaner/filter or components with
water or compressed air.To inspect or replace the engine air
cleaner/filter:
3.6L V6 Engine
1. Remove the seven screws on top of the engine air cleaner/filter
housing.
2. Lift the air cleaner/filter cover housing away from the engine.
3. Pull out the filter.
4. Inspect or replace the engine air cleaner/filter.
5. Reverse Steps 1–3 to reinstall the filter cover housing.
3.6L V6 Twin Turbo Engine

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
VEHICLE CARE 245
1. Screws
2. Secondary Air Hose
3. Lower Air Duct Clamp
4. Lower Electrical Connector
5. Upper Electrical Connector
6. Upper Air Duct Clamp
1. Disconnect the lower and upperoutlet ducts by loosening the
lower (3) and upper (6) air duct
clamps.
2. Disconnect the lower (4) and upper (5) electrical connectors
and wiring attachments from the
air cleaner/filter cover.
3. Remove the screws (1) on top of the air cleaner/filter cover.
4. Lift the air cleaner/filter cover housing away from the engine.
5. Pull out the air cleaner/filter.
6. Inspect or replace the engine air cleaner/filter.
7. Reverse Steps 1–5 to reinstall the air cleaner/filter cover housing.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air cleaner
not only cleans the air; it helps to
stop flames if the engine backfires.
Use caution when working on the
engine and do not drive with the air
cleaner/filter off.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always have
the air cleaner/filter in place when
driving.
Cooling System
The cooling system allows the engine
to maintain the correct working
temperature.
3.6L V6 Engine
1. Electric Engine Cooling Fans
(Out of View)
2. Coolant Surge Tank and Pressure Cap

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
SERVICE AND MAINTENANCE 317
Cadillac Premium Care
Maintenance
This vehicle comes with Cadillac
Premium Care Maintenance. It is a
maintenance program that covers
select services, when scheduled in
accordance with the owner’s manual,
including:
.Oil changes based on the vehicle's
oil life monitor system.
. Tire rotation every 12 000 km
(7,500 mi).
. Passenger compartment air filter
replacement.
. Multi-point vehicle inspection
(MPVI) performed by a qualified
technician.
Cadillac requires that all Cadillac
Premium Care Maintenance services
be performed by a Cadillac authorized
service dealer.
Maintenance Schedule
Owner Checks and Services
At Each Fuel Stop
. Check the engine oil level. See
Engine Oil 0240.
Once a Month
. Check the tire inflation pressures.
See Tire Pressure 0274.
. Inspect the tires for wear. See Tire
Inspection 0280.
. Check the windshield washer fluid
level. See Washer Fluid 0251.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km/600 mi. If driven
under the best conditions, the engine
oil life system may not indicate the
need for vehicle service for up to a
year. The engine oil and filter must be
changed at least once a year and the
oil life system must be reset. Your
trained dealer technician can perform
this work. If the engine oil life system is reset accidentally, service the
vehicle within 5 000 km/3,000 mi since
the last service. Reset the oil life
system when the oil is changed. See
Engine Oil Life System
0242.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the following
services. See Tire Rotation0280.
. Check engine oil level and oil
life percentage. If needed, change
engine oil and filter, and reset oil
life system.
See Engine Oil 0240 and Engine Oil
Life System 0242.
. Check engine coolant level. See
Cooling System 0245.
. Check windshield washer fluid
level. See Washer Fluid 0251.
. Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0307. Replace worn or
damaged wiper blades. See Wiper
Blade Replacement 0255.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
318 SERVICE AND MAINTENANCE
.Check tire inflation pressures. See
Tire Pressure 0274.
. Inspect tire wear. See Tire
Inspection 0280.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter 0243.
. Inspect brake system. See Exterior
Care 0307.
. Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of wear.
See Exterior Care 0307.
. Check restraint system
components. See Safety System
Check 073.
. Visually inspect fuel system for
damage or leaks.
. Visually inspect exhaust system
and nearby heat shields for loose
or damaged parts.
. Lubricate body components. See
Exterior Care 0307.
. Check starter switch. See Starter
Switch Check 0254. .
Check automatic transmission
shift lock control function. See
Automatic Transmission Shift Lock
Control Function Check 0255.
. Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check 0255.
. Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
. Visually inspect gas strut for signs
of wear, cracks, or other damage.
Check the hold open ability of the
strut. If the hold open ability is
low, service the gas strut. See Gas
Strut(s) 0256.
. Check tire sealant expiration date,
if equipped. See Tire Sealant and
Compressor Kit 0288.
. Inspect sunroof track and seal,
if equipped. See Sunroof050.