2015 CADILLAC XTS SEDAN coolant temperature

Black plate (16,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
10-16 Vehicle Care
{Caution
Using coolant other than
DEX-COOL®can cause
premature engine, heater core,
or radiator corrosion. In addition,
the engine coolant could require
changing sooner. Any repairs
would not be covered by the
vehicle warranty. Always use
DEX-COOL (silicate-free) coolant
in the vehicle.
Engine Coolant
The engine and Charged Air
Coolant (CAC) cooling systems in
the vehicle are filled with
DEX-COOL
®engine coolant
mixture. See Recommended Fluids
and Lubricants on page 11-13 and
Maintenance Schedule on
page 11-4.
The following explains the cooling
systems and how to check and add
coolant when it is low. If there is a problem with engine overheating,
see
Engine Overheating on
page 10-19.
What to Use
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or
others could be burned. Use a
50/50 mixture of clean, drinkable
water and DEX-COOL coolant. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
This mixture:
.Gives freezing protection down
to
−37°C (−34°F), outside
temperature.
.Gives boiling protection up to
129°C (265°F), engine
temperature.
.Protects against rust and
corrosion.
.Will not damage aluminum parts.
.Helps keep the proper engine
temperature.
{Caution
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
(Continued)

Black plate (19,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
Vehicle Care 10-19
The CAC bottle pressure cap can
be removed when the Charged Air
Coolant cooling system, including
the CAC bottle pressure cap, is no
longer hot.
1. Turn the pressure cap slowlycounterclockwise and remove it.
2. Fill the CAC bottle with the proper mixture to the COLD FILL
mark pointed to on the front of
the CAC bottle.
3. Replace the pressure cap tightly.
Engine Overheating
The vehicle has an engine coolant
temperature gauge and an engine
temperature light to warn of engine
overheating. There are also engine hot
messages that may be displayed in
the Driver Information Center (DIC).
See
Engine Cooling System
Messages on page 5-38.
If the decision is made not to lift the
hood when one of these warnings
appears, but get service help right
away. See Roadside Service on
page 13-5.
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.
Then check to see if the engine
cooling fans are running. If the
engine is overheating, the fans
should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.{Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
(Continued)
Caution (Continued)
covered by the vehicle warranty.
SeeOverheated Engine
Protection Operating Mode on
page 10-20 for information on
driving to a safe place in an
emergency.
If Steam Is Coming from the
Engine Compartment
{Warning
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you open
the hood.
(Continued)

Black plate (20,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
10-20 Vehicle Care
Warning (Continued)
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
If No Steam Is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
.Tows a trailer.If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest
temperature and to the highest
fan speed. Open the windows as
necessary.
3. When it is safe to do so, pull off the road, shift to P (Park) or
N (Neutral), and let the
engine idle.
If the temperature overheat gauge is
no longer in the overheat zone or an
overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slow
for about 10 minutes. Keep a safe
vehicle distance from the car in front
of you. If the warning does not come
back on, continue to drive normally
and have the cooling system
checked for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away. If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down. Also, see
“Overheated
Engine Protection Operating Mode”
next in this section.
Overheated Engine
Protection
Operating Mode
This emergency operating mode
allows the vehicle to be driven to a
safe place in an emergency
situation. If an overheated engine
condition exists, an overheat
protection mode, which alternates
firing groups of cylinders, helps
prevent engine damage. In this
mode, there is significant loss in
power and engine performance.
The engine coolant temperature
warning light comes on in the
instrument cluster, to indicate the
vehicle has entered overheated
engine protection operating mode.
The temperature gauge also

Black plate (22,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
10-22 Vehicle Care
Washer Fluid
What to Use
When adding windshield washer
fluid to the vehicle, be sure to read
the manufacturer instructions before
use. If you will be operating your
vehicle in an area where the
temperature may fall below freezing,
use a fluid that has sufficient
protection against freezing.
Adding Washer Fluid
The appropriate message will
appear on the Driver Information
Center (DIC) when the fluid level is
low. SeeWasher Fluid Messages on
page 5-46.
Open the cap with the washer
symbol on it. Add washer fluid until
the tank is full. See Engine
Compartment Overview on
page 10-5 for reservoir location.
{Caution
.Do not use engine coolant
(antifreeze) in the windshield
washer. It can damage the
windshield washer system
and paint.
.Do not mix water with
ready-to-use washer fluid.
Water can cause the solution
to freeze and damage the
washer fluid tank and other
parts of the washer system.
.When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
.Fill the washer fluid tank only
three-quarters full when it is
very cold. This allows for fluid
(Continued)
Caution (Continued)
expansion if freezing occurs,
which could damage the tank
if it is completely full.
Brakes
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be
heard all the time when the vehicle
is moving, except when applying the
brake pedal firmly.
{Warning
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have the
vehicle serviced.

Black plate (3,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
INDEX i-3
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Cluster, Instrument . . . . . . . . . . . . . 5-9
Collision Damage Repair . . . . . . 13-8
Compact Spare Tire . . . . . . . . . . 10-73
CompartmentsStorage . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Compass . . . . . . . . . . . . . . . . . . . . . . . 5-4
Messages . . . . . . . . . . . . . . . . . . . . 5-37
Compressor Kit, Tire Sealant . . . . . . . . . . . . . . . . . . . . . . 10-61
Connections
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-4
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 9-29
Control of a Vehicle . . . . . . . . . . . . . 9-3
Convenience Net . . . . . . . . . . . . . . . 4-4
Convex Mirrors . . . . . . . . . . . . . . . . 2-20
Coolant
Engine . . . . . . . . . . . . . . . . . . . . . . 10-16
Engine TemperatureGauge . . . . . . . . . . . . . . . . . . . . . . 5-15
Engine Temperature Warning Light . . . . . . . . . . . . . . . 5-25
Cooling System . . . . . . . . . . . . . . . 10-14
Engine Messages . . . . . . . . . . . . 5-38 Courtesy Lamps . . . . . . . . . . . . . . . . 6-7
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . 13-7
Cover Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-8
Cruise Control . . . . . . . . . . . . . . . . . 9-32 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Messages . . . . . . . . . . . . . . . . . . . . 5-37
Cruise Control, Active . . . . . . . . . 9-35
Customer Assistance . . . . . . . . . . 13-4 Offices . . . . . . . . . . . . . . . . . . . . . . . . 13-3
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 13-4
Customer Information Service PublicationsOrdering Information . . . . . . 13-10
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . 13-1
D
Damage Repair, Collision . . . . . . 13-8
Danger, Warnings, andCautions . . . . . . . . . . . . . . . . . . . . . . . . iv
Data Recorders, Event . . . . . . . 13-14
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 6-4 Defensive Driving . . . . . . . . . . . . . . . 9-3
Delayed Locking . . . . . . . . . . . . . . . 2-13
Distracted Driving . . . . . . . . . . . . . . . 9-2
Dome Lamps . . . . . . . . . . . . . . . . . . . 6-7
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 5-28
Ajar Messages . . . . . . . . . . . . . . . 5-38
Delayed Locking . . . . . . . . . . . . . . 2-13
Locks . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Power Locks . . . . . . . . . . . . . . . . . . 2-13
Rear Seat Pass-Through . . . . . 3-16
Drive Belt Routing, Engine . . . . . 12-4
Drive Systems All-Wheel Drive . . . . . . . 9-25, 10-25
Driver Assistance Systems . . . . 9-43
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . 5-29
Driving Assistance Systems . . . . . . . . . . 9-50
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 9-64
Defensive . . . . . . . . . . . . . . . . . . . . . . 9-3
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
For Better Fuel Economy . . . . . 1-22
Hill and Mountain Roads . . . . . . . 9-7
If the Vehicle is Stuck . . . . . . . . . . 9-9

Black plate (4,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
i-4 INDEX
Driving (cont'd)Loss of Control . . . . . . . . . . . . . . . . 9-5
Off-Road Recovery . . . . . . . . . . . . 9-5
Vehicle Load Limits . . . . . . . . . . . 9-10
Wet Roads . . . . . . . . . . . . . . . . . . . . 9-6
Winter . . . . . . . . . . . . . . . . . . . . . . . . . 9-8
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 8-1
E
Electric Parking Brake . . . . . . . . . 9-27
Electric Parking Brake Light . . . 5-21
Electrical Equipment,Add-On . . . . . . . . . . . . . . . . . . . . . . 9-69
Electrical System Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-31
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-30
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . 10-34
Overload . . . . . . . . . . . . . . . . . . . 10-30
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-36
Emergency
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-2 Engine
Air Cleaner/Filter . . . . . . . . . . . 10-13
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 5-18
Compartment Overview . . . . . . . 10-5
Coolant . . . . . . . . . . . . . . . . . . . . . 10-16
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-15
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 5-25
Cooling System . . . . . . . . . . . . . 10-14
Cooling System Messages . . . 5-38
Cover . . . . . . . . . . . . . . . . . . . . . . . . . 10-8
Drive Belt Routing . . . . . . . . . . . . 12-4
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-22
Heater . . . . . . . . . . . . . . . . . . . . . . . . 9-18
Oil Life System . . . . . . . . . . . . . .10-11
Oil Messages . . . . . . . . . . . . . . . . . 5-39
Overheated Protection
Operating Mode . . . . . . . . . . . 10-20
Overheating . . . . . . . . . . . . . . . . 10-19
Power Messages . . . . . . . . . . . . . 5-39
Pressure Light . . . . . . . . . . . . . . . . 5-26
Running While Parked . . . . . . . . 9-22
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-17
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-8 Equipment, Towing . . . . . . . . . . . . 9-68
Event Data Recorders . . . . . . . . 13-14
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-8
Extender, Safety Belt . . . . . . . . . . 3-23
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-3
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Filter,
Engine Air Cleaner . . . . . . . . . 10-13
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-3
Flashers, Hazard Warning . . . . . . 6-5
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-59 Changing . . . . . . . . . . . . . . . . . . . 10-69
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-89
Fluid Automatic Transmission . . . . 10-13
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-23
Power Steering . . . . . . . . . . . . . 10-21
Washer . . . . . . . . . . . . . . . . . . . . . 10-22
Folding Mirrors . . . . . . . . . . . . . . . . 2-21

Black plate (5,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
INDEX i-5
Forward Collision Alert(FCA) System . . . . . . . . . . . . . . . . 9-50
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . 13-12
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . 3-4
Heated and Ventilated . . . . . . . . 3-11
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-59 Additives . . . . . . . . . . . . . . . . . . . . . 9-61
Economy Driving . . . . . . . . . . . . . 1-22
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-63
Filling the Tank . . . . . . . . . . . . . . . 9-61
Foreign Countries . . . . . . . . . . . . 9-61
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Low Fuel Warning Light . . . . . . . 5-26
Requirements, California . . . . . 9-60
System Messages . . . . . . . . . . . . 5-39
Full-Size Spare Tire . . . . . . . . . . 10-74
Fuses Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-31
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-30 Fuses (cont'd)
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . 10-34
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . 10-36
G
Garage Door Opener . . . . . . . . . . 5-55Programming . . . . . . . . . . . . . . . . . 5-55
Gauges Engine Coolant
Temperature . . . . . . . . . . . . . . . . 5-15
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Odometer . . . . . . . . . . . . . . . . . . . . . 5-13
Speedometer . . . . . . . . . . . . . . . . . 5-13
Tachometer . . . . . . . . . . . . . . . . . . . 5-13
Trip Odometer . . . . . . . . . . . . . . . . 5-13
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . . 5-8
General Information
Service and Maintenance . . . . . 11-1
Towing . . . . . . . . . . . . . . . . . . . . . . . . 9-64
Vehicle Care . . . . . . . . . . . . . . . . . . 10-2
Glove Box . . . . . . . . . . . . . . . . . . . . . . 4-2
H
Hazard Warning Flashers . . . . . . . 6-5
Head Restraints . . . . . . . . . . . . . . . . 3-2
Head-up Display . . . . . . . . . . . . . . . 5-32
Headlamps Adaptive ForwardLighting (AFL) . . . . . . . . . . . . . . . . 6-5
Aiming . . . . . . . . . . . . . . . . . . . . . . 10-28
Automatic . . . . . . . . . . . . . . . . . . . . . . 6-4
Bulb Replacement . . . . . . . . . . 10-28
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . 6-4
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . 10-28
High-Beam On Light . . . . . . . . . . 5-27
High/Low Beam Changer . . . . . . 6-3
Lamps On Reminder . . . . . . . . . 5-28
Heated Rear Seats . . . . . . . . . . . . . . . . . . . 3-15
Steering Wheel . . . . . . . . . . . . . . . . 5-2
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Heated Mirrors . . . . . . . . . . . . . . . . . 2-21
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 9-18

Black plate (7,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
INDEX i-7
LightingAdaptive Forward . . . . . . . . . . . . . . 6-5
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Illumination Control . . . . . . . . . . . . 6-6
LED . . . . . . . . . . . . . . . . . . . . . . . . 10-28
Lights
Airbag Readiness . . . . . . . . . . . . . 5-16
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 5-22
Brake System Warning . . . . . . . 5-21
Charging System . . . . . . . . . . . . . 5-18
Cruise Control . . . . . . . . . . . . . . . . 5-28
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-28
Electric Parking Brake . . . . . . . . 5-21
Engine Coolant
Temperature Warning . . . . . . . 5-25
Engine Oil Pressure . . . . . . . . . . 5-26
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
High-Beam On . . . . . . . . . . . . . . . . 5-27
High/Low Beam Changer . . . . . . 6-3
Lane Departure Warning . . . . . . 5-23
Low Fuel Warning . . . . . . . . . . . . 5-26
Safety Belt Reminders . . . . . . . . 5-15
Security . . . . . . . . . . . . . . . . . . . . . . 5-27 Lights (cont'd)
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . 5-22
StabiliTrak
®OFF . . . . . . . . . . . . . 5-24
Tire Pressure . . . . . . . . . . . . . . . . . 5-25
Traction Control System (TCS)/StabiliTrak
®. . . . . . . . . . 5-24
Traction Off . . . . . . . . . . . . . . . . . . . 5-24
Limited-Slip Rear Axle . . . . . . . . . 9-31
Locks
Automatic Door . . . . . . . . . . . . . . . 2-13
Delayed Locking . . . . . . . . . . . . . . 2-13
Door . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Lockout Protection . . . . . . . . . . . . 2-14
Power Door . . . . . . . . . . . . . . . . . . . 2-13
Safety . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Loss of Control . . . . . . . . . . . . . . . . . 9-5
Low Fuel Warning Light . . . . . . . . 5-26
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . 3-46
Lumbar Adjustment . . . . . . . . . . . . . 3-7 Front Seats . . . . . . . . . . . . . . . . . . . . 3-7
M
Magnetic Ride Control . . . . . . . . . 9-31
Maintenance
Records . . . . . . . . . . . . . . . . . . . . .11-16
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . .11-10
Maintenance Schedule . . . . . . . . 11-4
Recommended Fluidsand Lubricants . . . . . . . . . . . . .11-13
Malfunction Indicator Lamp . . . . 5-18
Manual Mode . . . . . . . . . . . . . . . . . . 9-25
Massage . . . . . . . . . . . . . . . . . . . . . . 3-12
Memory Features . . . . . . . . . . . . . . . 1-9
Memory Seats . . . . . . . . . . . . . . . . . . 3-8
Messages Airbag System . . . . . . . . . . . . . . . . 5-44
Battery Voltage and
Charging . . . . . . . . . . . . . . . . . . . . 5-36
Brake System . . . . . . . . . . . . . . . . 5-36
Compass . . . . . . . . . . . . . . . . . . . . . 5-37
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-38
Engine Cooling System . . . . . . . 5-38
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-39
Engine Power . . . . . . . . . . . . . . . . 5-39
Fuel System . . . . . . . . . . . . . . . . . . 5-39
Key and Lock . . . . . . . . . . . . . . . . . 5-39