2015 CADILLAC XTS SEDAN cooling

Black plate (14,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
1-14 In Brief
Climate Controls
The climate control buttons and the touch screen are used to adjust the
heating, cooling, and ventilation.
Climate Control Buttons
1. Driver and Passenger Temperature Controls
2. Fan Control
3. OFF (Fan)
4. Driver and Passenger Heated and Ventilated Seats 5. AUTO (Automatic Operation)
6. Defrost
7. Rear Window Defogger
8. Recirculation
Climate Touch Screen Controls
1. Outside Temperature Display
2. Driver and Passenger Temperature Controls
3. Fan Control
4. SYNC (Synchronized Temperature)
5. A/C Mode (Air Conditioning)
6. Climate Control Selection (Application Tray Button)
7. Rear (Rear Climate Control Touch Screen)
8. Air Delivery Mode Control

Black plate (1,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
Instruments and Controls 5-1
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . 5-2
Steering Wheel Controls . . . . . . 5-2
Heated Steering Wheel . . . . . . . 5-2
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Windshield Wiper/Washer . . . . . 5-3
Compass . . . . . . . . . . . . . . . . . . . . . 5-4
Clock . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Power Outlets . . . . . . . . . . . . . . . . . 5-6
Cigarette Lighter . . . . . . . . . . . . . . 5-7
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . 5-8
Instrument Cluster . . . . . . . . . . . . 5-9
Speedometer . . . . . . . . . . . . . . . . 5-13
Odometer . . . . . . . . . . . . . . . . . . . . 5-13
Trip Odometer . . . . . . . . . . . . . . . 5-13
Tachometer . . . . . . . . . . . . . . . . . . 5-13
Fuel Gauge . . . . . . . . . . . . . . . . . . 5-13
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-15
Safety Belt Reminders . . . . . . . 5-15 Airbag Readiness Light . . . . . . 5-16
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . 5-17
Charging System Light . . . . . . 5-18
Malfunction Indicator Lamp . . . . . . . . . . . . . 5-18
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . 5-21
Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . 5-21
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . 5-22
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . 5-22
Lane Departure Warning (LDW) Light . . . . . . . . . . . . . . . . 5-23
Lane Keep Assist (LKA) Light . . . . . . . . . . . . . . . . . . . . . . . 5-23
Vehicle Ahead Indicator . . . . . . 5-23
Traction Off Light . . . . . . . . . . . . 5-24
StabiliTrak
®OFF Light . . . . . . . 5-24
Traction Control System (TCS)/StabiliTrak
®Light . . . . 5-24
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . 5-25
Tire Pressure Light . . . . . . . . . . 5-25
Engine Oil Pressure Light . . . . 5-26
Low Fuel Warning Light . . . . . . 5-26
Security Light . . . . . . . . . . . . . . . . 5-27 High-Beam On Light . . . . . . . . . 5-27
Adaptive Forward Lighting
(AFL) Light . . . . . . . . . . . . . . . . . 5-27
Lamps On Reminder . . . . . . . . . 5-28
Cruise Control Light . . . . . . . . . 5-28
Door Ajar Light . . . . . . . . . . . . . . 5-28
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . 5-29
Head-Up Display (HUD) . . . . . 5-32
Vehicle Messages
Vehicle Messages . . . . . . . . . . . 5-35
Battery Voltage and Charging Messages . . . . . . . . . . . . . . . . . . 5-36
Brake System Messages . . . . 5-36
Compass Messages . . . . . . . . . 5-37
Cruise Control Messages . . . . 5-37
Door Ajar Messages . . . . . . . . . 5-38
Engine Cooling System Messages . . . . . . . . . . . . . . . . . . 5-38
Engine Oil Messages . . . . . . . . 5-39
Engine Power Messages . . . . 5-39
Fuel System Messages . . . . . . 5-39
Key and Lock Messages . . . . . 5-39
Lamp Messages . . . . . . . . . . . . . 5-40
Object Detection System Messages . . . . . . . . . . . . . . . . . . 5-41

Black plate (38,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
5-38 Instruments and Controls
Door Ajar Messages
DOOR OPEN
A door open symbol will be
displayed on the DIC showing which
door is open. If the vehicle has been
shifted out of P (Park), a DOOR
OPEN message will also be
displayed. The DOOR OPEN
message may also be displayed if
the vehicle starts to move. Close the
door completely.
HOOD OPEN
This message will display along with
a hood open symbol when the hood
is open. Close the hood completely.
TRUNK OPEN
This message will display along with
a symbol when the trunk is open.
Close the trunk completely.
Engine Cooling System
Messages
A/C OFF DUE TO HIGH
ENGINE TEMP
This message displays when the
engine coolant becomes hotter than
the normal operating temperature.
To avoid added strain on a hot
engine, the air conditioning
compressor automatically turns off.
When the coolant temperature
returns to normal, the air
conditioning compressor turns back
on. The vehicle can continue to be
driven.
If this message continues to appear,
have the system repaired by your
dealer as soon as possible to avoid
damage to the engine.
COOLANT LEVEL LOW ADD
COOLANT
This message will display if the
coolant is low. SeeEngine Coolant
on page 10-16.
ENGINE OVERHEATED —
IDLE ENGINE
This message displays when the
engine coolant temperature is too
hot. Stop and allow the vehicle to
idle until it cools down.
ENGINE OVERHEATED —
STOP ENGINE
This message displays and a
continuous chime sounds if the
engine cooling system reaches
unsafe temperatures for operation.
Stop and turn off the vehicle as
soon as it is safe to do so to avoid
severe damage. This message
clears when the engine has cooled
to a safe operating temperature.
HIGH COOLANT
TEMPERATURE
This message displays if the coolant
temperature is hot. See Engine
Overheating on page 10-19.

Black plate (1,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
Climate Controls 8-1
Climate Controls
Climate Control Systems
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 8-1
Rear Climate Control System . . . . . . . . . . . . . . . . . . . . . . 8-6
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . 8-8
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Service . . . . . . . . . . . . . . . . . . . . . . . 8-9
Climate Control Systems
Dual Automatic Climate Control System
The climate control buttons and the touch screen are used to adjust the
heating, cooling, and ventilation.
Climate Control Buttons
1. Driver and Passenger Temperature Controls
2. Fan Control
3. OFF (Fan) 4. Driver and Passenger Heated
and Ventilated Seats (If
Equipped)
5. AUTO (Automatic Operation)
6. Defrost

Black plate (7,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
Driving and Operating 9-7
Hydroplaning
Hydroplaning is dangerous. Water
can build up under the vehicle's
tires so they actually ride on the
water. This can happen if the road is
wet enough and you are going fast
enough. When the vehicle is
hydroplaning, it has little or no
contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
.Allow extra following distance.
.Pass with caution.
.Keep windshield wiping
equipment in good shape.
.Keep the windshield washer fluid
reservoir filled.
.Have good tires with proper
tread depth. SeeTires on
page 10-38.
.Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips for
driving in these conditions include:
.Keep the vehicle serviced and in
good shape.
.Check all fluid levels and brakes,
tires, cooling system, and
transmission.
.Shift to a lower gear when going
down steep or long hills.
{Warning
Using the brakes to slow the
vehicle on a long downhill slope
can cause brake overheating, can
reduce brake performance, and
(Continued)
Warning (Continued)
could result in a loss of braking.
Shift the transmission to a lower
gear to let the engine assist the
brakes on a steep downhill slope.
{Warning
Coasting downhill in N (Neutral)
or with the ignition off is
dangerous. This can cause
overheating of the brakes and
loss of steering. Always have the
engine running and the vehicle
in gear.
.Stay in your own lane. Do not
swing wide or cut across the
center of the road. Drive at
speeds that let you stay in your
own lane.
.Be alert on top of hills;
something could be in your lane
(stalled car, accident).

Black plate (67,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
Driving and Operating 9-67
lubricant, belts, cooling system, and
brake system. It is a good idea to
inspect these before and during
the trip.
Check periodically to see that all
hitch nuts and bolts are tight.
Trailer Towing
Before pulling a trailer, three
important considerations have to do
with weight:
.Weight of the trailer.
.Weight of the trailer tongue.
.Total weight on your vehicle's
tires.
Weight of the Trailer
How heavy can a trailer safely be?
It should never weigh more than
454 kg (1,000 lb). But even that can
be too heavy.
It depends on how the rig is used.
For example, speed, altitude, road
grades, outside temperature, and
how much the vehicle is used to pulla trailer are all important. It can
depend on any special equipment
on the vehicle, and the amount of
tongue weight the vehicle can carry.
See
“Weight of the Trailer Tongue”
later in this section.
Maximum trailer weight is calculated
assuming only the driver is in the
tow vehicle and it has all the
required trailering equipment. The
weight of additional optional
equipment, passengers, and cargo
in the tow vehicle must be
subtracted from the maximum trailer
weight.
Ask your dealer for trailering
information or advice, or write us at
our Customer Assistance Offices.
See Customer Assistance Offices
on page 13-3.
Weight of the Trailer Tongue
The tongue load (1) of any trailer is
an important weight to measure
because it affects the total gross
weight of the vehicle. The Gross
Vehicle Weight (GVW) includes the
curb weight of the vehicle, any cargo carried in it, and the people
who will be riding in the vehicle.
If there are a lot of options,
equipment, passengers, or cargo in
the vehicle, it will reduce the tongue
weight the vehicle can carry, which
will also reduce the trailer weight the
vehicle can tow. If towing a trailer,
the tongue load must be added to
the GVW because the vehicle will
be carrying that weight, too. See
Vehicle Load Limits on page 9-10.
The trailer tongue (1) should weigh
10 % of the total loaded trailer
weight (2).

Black plate (1,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-2
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-3
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-5
Engine Cover . . . . . . . . . . . . . . . . 10-8
Engine Oil . . . . . . . . . . . . . . . . . . . 10-9
Engine Oil Life System . . . . . 10-11
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-13
Engine Air Cleaner/Filter . . . . 10-13
Cooling System . . . . . . . . . . . . 10-14
Engine Coolant . . . . . . . . . . . . . 10-16
Engine Overheating . . . . . . . . 10-19 Overheated Engine
Protection
Operating Mode . . . . . . . . . . . 10-20
Power Steering Fluid (LF3 and LFX
with AWD) . . . . . . . . . . . . . . . . 10-21
Power Steering Fluid (LFX with FWD) . . . . . . . . . . . . . . . . 10-21
Washer Fluid . . . . . . . . . . . . . . . 10-22
Brakes . . . . . . . . . . . . . . . . . . . . . 10-22
Brake Fluid . . . . . . . . . . . . . . . . . 10-23
Battery . . . . . . . . . . . . . . . . . . . . . 10-24
All-Wheel Drive . . . . . . . . . . . . . 10-25
Starter Switch Check . . . . . . . 10-25
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-26
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-26
Wiper Blade Replacement . . . . . . . . . . . . . . 10-26
Windshield Replacement . . . 10-27
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-28
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-28
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . 10-28
LED Lighting . . . . . . . . . . . . . . . 10-28
Back-Up Lamps . . . . . . . . . . . . 10-28
License Plate Lamp . . . . . . . . 10-29
Replacement Bulbs . . . . . . . . . 10-29
Electrical System
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-30
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-30
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-31
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-34
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-36
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-38
All-Season Tires . . . . . . . . . . . . 10-39
Winter Tires . . . . . . . . . . . . . . . . 10-39
Summer Tires . . . . . . . . . . . . . . 10-39
Tire Sidewall Labeling . . . . . . 10-40
Tire Designations . . . . . . . . . . . 10-42

Black plate (6,1)Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-7707485) -
2015 - CRC - 10/31/14
10-6 Vehicle Care
1.Engine Air Cleaner/Filter on
page 10-13.
2. Power Steering Fluid Reservoir (Under Engine Cover) (If
Equipped). See Power Steering
Fluid (LF3 and LFX with AWD)
on page 10-21 orPower
Steering Fluid (LFX with FWD)
on page 10-21.
3. Engine Oil Fill Cap. See Engine
Oil on page 10-9.
4. Engine Oil Dipstick (Out of View). See Engine Oil on
page 10-9. 5.
Engine Cover on page 10-8.
6. Engine Cooling Fans (Out of View). See Cooling System on
page 10-14.
7. Brake Fluid Reservoir. See Brakes on page 10-22.
8. Engine Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10-16.
9. Battery on page 10-24 (Battery
Cover not Shown). 10. Remote Positive (+) Terminal
(Battery Cover not Shown).
SeeJump Starting on
page 10-75.
11. Engine Compartment Fuse
Block on page 10-31.
12. Remote Negative (−) Terminal (Out of View). See Jump
Starting on page 10-75.
13. Windshield Washer Fluid Reservoir. See Washer Fluid
on page 10-22.