2017 CADILLAC XTS overheating

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-10292881) - 2017 -
crc - 7/1/16
VEHICLE CARE 221
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 222
Accessories andModifications . . . . . . . . . . . . . . . . . . . 222
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 223
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 224
Engine Cover . . . . . . . . . . . . . . . . . . . . . . 227
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 228
Engine Oil Life System . . . . . . . . . . . 230
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Engine Air Cleaner/Filter . . . . . . . . . 231
Cooling System . . . . . . . . . . . . . . . . . . . 233
Engine Coolant . . . . . . . . . . . . . . . . . . . 234
Engine Overheating . . . . . . . . . . . . . . 237
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . 238
Power Steering Fluid . . . . . . . . . . . . . 238
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 239
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 241
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
All-Wheel Drive . . . . . . . . . . . . . . . . . . 242 Starter Switch Check . . . . . . . . . . . . . 243
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 243
Wiper Blade Replacement . . . . . . . 244
Windshield Replacement . . . . . . . . 244Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 245
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 245
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 245
LED Lighting . . . . . . . . . . . . . . . . . . . . . 245
Back-Up Lamps . . . . . . . . . . . . . . . . . . . 245
License Plate Lamp . . . . . . . . . . . . . . 246
Replacement Bulbs . . . . . . . . . . . . . . . 247
Electrical System
Electrical System Overload . . . . . . 247
Fuses and Circuit Breakers . . . . . . 248
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Instrument Panel Fuse Block . . . . 251
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 All-Season Tires . . . . . . . . . . . . . . . . . . 255
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 255
Low-Profile Tires . . . . . . . . . . . . . . . . . 256
Summer Tires . . . . . . . . . . . . . . . . . . . . 256
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 256
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . 257
Tire Pressure Monitor System . . . 258
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 259
Tire Inspection . . . . . . . . . . . . . . . . . . . 262
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 262
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Buying New Tires . . . . . . . . . . . . . . . . 264
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Wheel Replacement . . . . . . . . . . . . . . 266
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 266
If a Tire Goes Flat . . . . . . . . . . . . . . . . 267
Tire Changing . . . . . . . . . . . . . . . . . . . . . 268
Compact Spare Tire . . . . . . . . . . . . . . 272
Jump Starting
Jump Starting . . . . . . . . . . . . . . . . . . . . . 273
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . 276
Recreational Vehicle Towing . . . . 276

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-10292881) - 2017 -
crc - 7/1/16
234 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 0295 and
Maintenance Schedule 0288.
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 0237.
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
(Continued)
Warning (Continued)
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-10292881) - 2017 -
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VEHICLE CARE 237
2. Fill the CAC bottle with theproper 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 0136.
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
0 238 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)
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.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-10292881) - 2017 -
crc - 7/1/16
254 VEHICLE CARE
FusesUsage
F30 Front camera/EOCM
F31 Rear parking assist/ Lane departure
warning
F32 –
F33 –
F34 –
F35 –
F36 –
F37 –
Relays Usage
K1 –
K2 Front courtesy lamps relay
K3 Leveling compressor relay
K4 LogicWheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer. See the
warranty manual for information
regarding the tire warranty and
where to get service. For
additional information refer to the
tire manufacturer.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much flexing.
There could be a blowout
and a serious crash. See
Vehicle Load Limits 0173.
(Continued)
Warning (Continued)
.Underinflated tires pose
the same danger as
overloaded tires. The
resulting crash could cause
serious injury. Check all
tires frequently to
maintain the
recommended pressure.
Tire pressure should be
checked when the tires
are cold.
.Overinflated tires are more
likely to be cut, punctured,
or broken by a sudden
impact —such as when
hitting a pothole. Keep
tires at the recommended
pressure.
.Worn or old tires can
cause a crash. If the tread
is badly worn,
replace them.
(Continued)

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-10292881) - 2017 -
crc - 7/1/16
256 VEHICLE CARE
Low-Profile Tires
If the vehicle has P245/40R20 or
P245/45R19 size tires, they are
classified as low-profile tires.Caution
Low-profile tires are more
susceptible to damage from road
hazards or curb impact than
standard profile tires. Tire and/or
wheel assembly damage can occur
when coming into contact with
road hazards like potholes, or sharp
edged objects, or when sliding into
a curb. The warranty does not cover
this type of damage. Keep tires set
to the correct inflation pressure and
when possible, avoid contact with
curbs, potholes, and other road
hazards.
Summer Tires
This vehicle may come with high
performance summer tires. These tires
have a special tread and compound
that are optimized for maximum dry
and wet road performance. This special tread and compound will have
decreased performance in cold
climates, and on ice and snow. It is
recommended that winter tires be
installed on the vehicle if frequent
driving at temperatures below
approximately 5 °C (40 °F) or on ice or
snow covered roads is expected. See
Winter Tires
0255.
Caution
High performance summer tires
have rubber compounds that lose
flexibility and may develop surface
cracks in the tread area at
temperatures below −7 °C (20 °F).
Always store high performance
summer tires indoors and at
temperatures above −7 °C (20 °F)
when not in use. If the tires have
been subjected to −7 °C (20 °F) or
less, let them warm up in a heated
space to at least 5 °C (40 °F) for
24 hours or more before being
installed or driving a vehicle on
which they are installed. Do not
apply heat or blow heated air
(Continued)
Caution (Continued)
directly on the tires. Always inspect
tires before use. SeeTire
Inspection 0262.
Tire Pressure
Tires need the correct amount of
air pressure to operate effectively.
Caution
Neither tire underinflation nor
overinflation is good.
Underinflated tires, or tires that
do not have enough air, can
result in:
.Tire overloading and
overheating which could
lead to a blowout.
.Premature or
irregular wear.
.Poor handling.
.Reduced fuel economy.
(Continued)

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-10292881) - 2017 -
crc - 7/1/16
INDEX 307
Engine (cont'd)Oil Pressure Light . . . . . . . . . . . . . . . . . 126
Overheated Protection
Operating Mode . . . . . . . . . . . . . . . . . 238
Overheating . . . . . . . . . . . . . . . . . . . . . . . 237
Power Messages . . . . . . . . . . . . . . . . . . 137
Running While Parked . . . . . . . . . . . 182
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 156
Equipment, Towing . . . . . . . . . . . . . . . . . 219
Event Data Recorders . . . . . . . . . . . . . . 302
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 157
Exterior Lamp Controls . . . . . . . . . . . . 151
Exterior Lamps Off Reminder . . . . . . 152
Exterior Lighting Battery Saver . . . . 157
F
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 231
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 153
Flashers, Hazard Warning . . . . . . . . . . 154
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Fluid Automatic Transmission . . . . . . . . . 231
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241 Fluid (cont'd)
Power Steering . . . . . . . . . . . . . . . . . . . . 238
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 42
Forward Automatic Braking . . . . . . . . 208
Forward Collision Alert (FCA)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Front Seats Heated and Ventilated . . . . . . . . . . . . . 58
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212 Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Economy Driving . . . . . . . . . . . . . . . . . . . 24
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 215
Filling the Tank . . . . . . . . . . . . . . . . . . . 213
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Low Fuel Warning Light . . . . . . . . . 126
System Messages . . . . . . . . . . . . . . . . . 137
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Fuses and Circuit Breakers . . . . . . . 248
Instrument Panel Fuse Block . . . . 251
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
G
GaugesEngine Coolant Temperature . . . . 117
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Speedometer . . . . . . . . . . . . . . . . . . . . . . 115
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 116
Trip Odometer . . . . . . . . . . . . . . . . . . . . 116
Warning Lights andIndicators . . . . . . . . . . . . . . . . . . . . . . . . 111
General Information Service and Maintenance . . . . . . . . 287
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 222
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
H
Hazard Warning Flashers . . . . . . . . . . 154
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 50
Head-up Display . . . . . . . . . . . . . . . . . . . . 131
Headlamps Adaptive ForwardLighting (AFL) . . . . . . . . . . . . . . . . . . . 154
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 153
Bulb Replacement . . . . . . . . . . . . . . . . 245
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 153
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 153

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-10292881) - 2017 -
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310 INDEX
Mirrors, Interior Rearview . . . . . . . . . . . 43
Monitor System, Tire Pressure . . . . . 258
N
Net, Convenience . . . . . . . . . . . . . . . . . . . 102
New Vehicle Break-In . . . . . . . . . . . . . . . 177
O
Object Detection SystemMessages . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Off-Road
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Engine Oil Life System . . . . . . . . . . . 230
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Pressure Light . . . . . . . . . . . . . . . . . . . . . 126
Older Children, Restraints . . . . . . . . . . . 81
Operating Mode Overheated Engine Protection . . . 238
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . . . 238
Overheating, Engine . . . . . . . . . . . . . . . . 237
P
Park
Shifting Into . . . . . . . . . . . . . . . . . . . . . . 180
Shifting Out of . . . . . . . . . . . . . . . . . . . . 181
Parking
Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 243
Over Things That Burn . . . . . . . . . . . 181
Parking Assist . . . . . . . . . . . . . . . . . . . . . . . 202
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 202
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Passenger Sensing System . . . . . . . . . . 75
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Power
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Protection, Battery . . . . . . . . . . . . . . . . 157
Retained Accessory (RAP) . . . . . . . . 180
Seat Adjustment . . . . . . . . . . . . . . . . . . . . 53
Steering Fluid . . . . . . . . . . . . . . . . . . . . . 238
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Pregnancy, Using Safety Belts . . . . . . 68
Privacy
Vehicle Data Recording . . . . . . . . . . 302
R
Reading Lamps . . . . . . . . . . . . . . . . . . . . . 156
Rear AxleLimited-Slip . . . . . . . . . . . . . . . . . . . . . . . 190
Rear Climate Control System . . . . . . 163
Rear Seat Armrest . . . . . . . . . . . . . . . . . . . 62
Rear Seat Pass-Through Door . . . . . . . 63
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Rear Vision Camera (RVC) . . . . . . . . . 202
Rear Window Sunshade . . . . . . . . . . . . . 46
Rearview Mirrors Automatic Dimming . . . . . . . . . . . . . . . . 43
Reclining Seatbacks . . . . . . . . . . . . . . . . . 56
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . 295
Records
Maintenance . . . . . . . . . . . . . . . . . . . . . . 297
Recreational Vehicle Towing . . . . . . . 276
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Remote Vehicle Start . . . . . . . . . . . . . . . . 31
Replacement Bulbs . . . . . . . . . . . . . . . . . 247
Replacement Parts
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80