2016 CADILLAC XTS coolant temperature

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Vehicle Care 239
{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 you are driving.
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
3.6L V6 Engine
1. Electric Engine CoolingFans (Out of View)
2. Coolant Surge Tank and Pressure Cap
3.6L V6 Engine Twin Turbo
1. Electric Engine CoolingFans (Out of View)
2. Charged Air Coolant (CAC) Bottle and Pressure Cap
3. Coolant Surge Tank and Pressure Cap
{Warning
An electric engine cooling fan
under the hood can start up even
when the engine is not running
and can cause injury. Keep
hands, clothing, and tools away
from any underhood electric fan.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
240 Vehicle Care
{Warning
Heater and radiator hoses, and
other engine parts, can be very
hot. Do not touch them. If you do,
you can be burned.
Do not run the engine if there is a
leak. If you run the engine, it
could lose all coolant. That could
cause an engine fire, and you
could be burned. Get any leak
fixed before you drive the vehicle.
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 0301 and
Maintenance Schedule 0297.
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 0243.
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
(Continued)
Warning (Continued)
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.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Vehicle Care 243
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 slowly counterclockwise 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 0137. If the decision is made not to lift the
hood when one of these warnings
appears, but get service help
right away.
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
covered by the vehicle warranty.
See
Overheated Engine
Protection Operating Mode 0244
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.
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

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
244 Vehicle Care
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
indicates an overheat condition
exists. Driving extended distances
and/or towing a trailer in the
overheat protection mode should be
avoided.
Power Steering Fluid
(LFX with FWD)
The vehicle has electric power
steering and does not use power
steering fluid.
Power Steering Fluid
(LF3 and LFX with AWD)

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
312 Index
ControlTraction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 192
Control of a Vehicle . . . . . . . . . . . . . 171
Convenience Net . . . . . . . . . . . . . . . 101
Convex Mirrors . . . . . . . . . . . . . . . . . . 41
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . . . 240
Engine Temperature Gauge . . .116
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 124
Cooling System . . . . . . . . . . . . . . . . . 239 Engine Messages . . . . . . . . . . . . 137
Courtesy Lamps . . . . . . . . . . . . . . . . 157
Cover Engine . . . . . . . . . . . . . . . . . . . . . . . . 233
Cruise Control . . . . . . . . . . . . . . . . . . 195 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Messages . . . . . . . . . . . . . . . . . . . . 136
Cruise Control, Adaptive . . . . . . . . 198
D
Danger, Warning, and Caution . . . . 2
Data Recorders, Event . . . . . . . . . 308
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 154
Defensive Driving . . . . . . . . . . . . . . . 171
Delayed Locking . . . . . . . . . . . . . . . . . 35
Distracted Driving . . . . . . . . . . . . . . . 171 Dome Lamps . . . . . . . . . . . . . . . . . . . 157
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 127
Ajar Messages . . . . . . . . . . . . . . . 136
Delayed Locking . . . . . . . . . . . . . . . . 35
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Power Locks . . . . . . . . . . . . . . . . . . . . 35
Rear Seat Pass-Through . . . . . . . 62
Drive Belt Routing, Engine . . . . . . 307
Drive Systems All-Wheel Drive . . . . . . . . . . 189, 249
Driver Assistance Systems . . . . . 205
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . 128
Driving Assistance Systems . . . . . . . . . . 210
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 221
Defensive . . . . . . . . . . . . . . . . . . . . . 171
For Better Fuel Economy . . . . . . . 25
Hill and Mountain Roads . . . . . . 175
If the Vehicle is Stuck . . . . . . . . . 176
Loss of Control . . . . . . . . . . . . . . . 173
Off-Road Recovery . . . . . . . . . . . 173
Vehicle Load Limits . . . . . . . . . . . 177
Wet Roads . . . . . . . . . . . . . . . . . . . 174
Winter . . . . . . . . . . . . . . . . . . . . . . . . 175 Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . 161
E
Electric Parking Brake . . . . . . . . . . 190
Electric Parking Brake Light . . . . 122
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 226
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 254
Fuses and Circuit Breakers . . . 254
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 257
Overload . . . . . . . . . . . . . . . . . . . . . 253
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 259
Engine Air Cleaner/Filter . . . . . . . . . . . . . 237
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . .119
Compartment Overview . . . . . . . 230
Coolant . . . . . . . . . . . . . . . . . . . . . . . 240
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . .116
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 124
Cooling System . . . . . . . . . . . . . . . 239
Cooling System Messages . . . 137

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Index 313
Engine (cont'd)Cover . . . . . . . . . . . . . . . . . . . . . . . . . 233
Drive Belt Routing . . . . . . . . . . . . 307
Exhaust . . . . . . . . . . . . . . . . . . . . . . 186
Oil Life System . . . . . . . . . . . . . . . 236
Oil Messages . . . . . . . . . . . . . . . . . 137
Oil Pressure Light . . . . . . . . . . . . 125
Overheated Protection
Operating Mode . . . . . . . . . . . . . 244
Overheating . . . . . . . . . . . . . . . . . . 243
Power Messages . . . . . . . . . . . . . 138
Running While Parked . . . . . . . . 186
Starting . . . . . . . . . . . . . . . . . . . . . . . 182
Entry Lighting . . . . . . . . . . . . . . . . . . . 158
Equipment, Towing . . . . . . . . . . . . . 225
Event Data Recorders . . . . . . . . . . 308
Exit Lighting . . . . . . . . . . . . . . . . . . . . 158
Exterior Lamp Controls . . . . . . . . . 152
Exterior Lamps Off Reminder . . . 154
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 159
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter, Engine Air Cleaner . . . . . . . . . . . 237
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 154
Flashers, Hazard Warning . . . . . . 156 Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 274
Changing . . . . . . . . . . . . . . . . . . . . . 275
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 294
Fluid Automatic Transmission . . . . . . 237
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 247
Power Steering . . . . . . . . . . . . . . . 244
Washer . . . . . . . . . . . . . . . . . . . . . . . 245
Folding Mirrors . . . . . . . . . . . . . . . . . . 42
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . 211
Front Automatic Braking (FAB) System . . . . . . . . . . . . . . . . . 213
Front Seats Heated and Ventilated . . . . . . . . . . 57
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Additives . . . . . . . . . . . . . . . . . . . . . 218
Economy Driving . . . . . . . . . . . . . . . 25
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 220
Filling the Tank . . . . . . . . . . . . . . . 219
Gauge . . . . . . . . . . . . . . . . . . . . . . . . .115
Low Fuel Warning Light . . . . . . . 126
System Messages . . . . . . . . . . . . 138
Fuses
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 254
Fuses and Circuit Breakers . . . 254 Fuses (cont'd)
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 257
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 259
G
GaugesEngine CoolantTemperature . . . . . . . . . . . . . . . . .116
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . .115
Odometer . . . . . . . . . . . . . . . . . . . . . .115
Speedometer . . . . . . . . . . . . . . . . . .114
Tachometer . . . . . . . . . . . . . . . . . . . .115
Trip Odometer . . . . . . . . . . . . . . . . .115
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . .110
General Information Service and Maintenance . . . . . 296
Towing . . . . . . . . . . . . . . . . . . . . . . . . 221
Vehicle Care . . . . . . . . . . . . . . . . . . 228
Glove Box . . . . . . . . . . . . . . . . . . . . . . . 99
H
Hazard Warning Flashers . . . . . . . 156
Head Restraints . . . . . . . . . . . . . . . . . 50
Head-up Display . . . . . . . . . . . . . . . . 131

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Index 315
LightingAdaptive Forward . . . . . . . . . . . . . 155
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 158
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Illumination Control . . . . . . . . . . . 157
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Airbag Readiness . . . . . . . . . . . . . .118
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 122
Brake System Warning . . . . . . . 121
Charging System . . . . . . . . . . . . . .119
Cruise Control . . . . . . . . . . . . . . . . 127
Door Ajar . . . . . . . . . . . . . . . . . . . . . 127
Electric Parking Brake . . . . . . . . 122
Engine Coolant
Temperature Warning . . . . . . . 124
Engine Oil Pressure . . . . . . . . . . 125
Flash-to-Pass . . . . . . . . . . . . . . . . . 154
High-Beam On . . . . . . . . . . . . . . . . 126
High/Low Beam Changer . . . . . 154
Lane Departure Warning . . . . . . 123
Low Fuel Warning . . . . . . . . . . . . 126
Safety Belt Reminders . . . . . . . . .117
Security . . . . . . . . . . . . . . . . . . . . . . 126
Service Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . . . 122
StabiliTrak
®OFF . . . . . . . . . . . . . 124 Lights (cont'd)
Tire Pressure . . . . . . . . . . . . . . . . . 125
Traction Control System
(TCS)/StabiliTrak
®. . . . . . . . . . 124
Traction Off . . . . . . . . . . . . . . . . . . . 123
Limited-Slip Rear Axle . . . . . . . . . . 194
Locks Automatic Door . . . . . . . . . . . . . . . . . 35
Delayed Locking . . . . . . . . . . . . . . . . 35
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Lockout Protection . . . . . . . . . . . . . . 36
Power Door . . . . . . . . . . . . . . . . . . . . . 35
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Loss of Control . . . . . . . . . . . . . . . . . 173
Low Fuel Warning Light . . . . . . . . . 126
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 86
Lumbar Adjustment . . . . . . . . . . . . . . 53 Front Seats . . . . . . . . . . . . . . . . . . . . . 53
M
Magnetic Ride Control . . . . . . . . . . 194
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . 303
Maintenance Schedule . . . . . . . . . 297 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 301
Malfunction Indicator Lamp . . . . . 119 Manual Mode . . . . . . . . . . . . . . . . . . . 188
Massage . . . . . . . . . . . . . . . . . . . . . . . . 59
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 56
Messages
Airbag System . . . . . . . . . . . . . . . . 142
Battery Voltage andCharging . . . . . . . . . . . . . . . . . . . . 135
Brake System . . . . . . . . . . . . . . . . 135
Compass . . . . . . . . . . . . . . . . . . . . . 136
Door Ajar . . . . . . . . . . . . . . . . . . . . . 136
Engine Cooling System . . . . . . . 137
Engine Oil . . . . . . . . . . . . . . . . . . . . 137
Engine Power . . . . . . . . . . . . . . . . 138
Fuel System . . . . . . . . . . . . . . . . . . 138
Key and Lock . . . . . . . . . . . . . . . . . 138
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 139
Object Detection System . . . . . 139
Ride Control System . . . . . . . . . . 141
Security . . . . . . . . . . . . . . . . . . . . . . 142
Service Vehicle . . . . . . . . . . . . . . . 142
Starting the Vehicle . . . . . . . . . . . 143
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Transmission . . . . . . . . . . . . . . . . . 143
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 134
Vehicle Reminder . . . . . . . . . . . . . 144
Vehicle Speed . . . . . . . . . . . . . . . . 144
Washer Fluid . . . . . . . . . . . . . . . . . 144