check engine CADILLAC XTS 2018 Owner's Manual

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
IN BRIEF 7
1.Air Vents 0166.
2. Electric Parking Brake 0191.
Instrument Panel Illumination
Control 0156.
Head-Up Display (HUD) 0139 (If
Equipped).
3. Exterior Lamp Controls 0152.
Turn Signal Lever. See Turn and
Lane-Change Signals 0155.
4. Instrument Cluster 0118.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) 0136.
5. Windshield Wiper/Washer 0111.
6. Hazard Warning Flashers 0155.
Lane Departure Warning (LDW)
0 219.
Lane Keep Assist (LKA) 0220.
Traction Control/Electronic
Stability Control 0193.
7. Infotainment 0159. 8. Glove Box Button. See
Glove Box
0 107.
Parking Assist Button. See
Assistance Systems for Parking or
Backing 0207.
Automatic Parking Assist (APA)
Button. See Assistance Systems
for Parking or Backing 0207.
9. Dual Automatic Climate Control
System 0160.
Heated and Ventilated Front Seats
0 62 (If Equipped).
10. Instrument Panel Storage 0106 (If
Equipped).
Wireless Charging Pad (If
Equipped) (Out of View). See
Wireless Charging 0115.
11. Shift Lever. See Automatic
Transmission 0188.
12. ENGINE START/STOP Button. SeeIgnition Positions 0181.
13. Steering Wheel Controls 0111.
14. Horn 0111. 15.
Steering Wheel Adjustment 0111.
16. Cruise Control 0196.
Adaptive Cruise Control 0198 (If
Equipped).
Forward Collision Alert (FCA)
System 0213 (If Equipped).
Phone Button. See “Steering
Wheel Controls ”in the
infotainment manual.
Heated Steering Wheel 0111 (If
Equipped).
17. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0128.
18. Hood Release. See Hood0235.
19. Instrument Panel Storage 0106.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
KEYS, DOORS, AND WINDOWS 35
/:This button will be on the RKE
transmitter if the vehicle has remote
start.
If equipped, heated and ventilated
front seats may also come on if
enabled in vehicle personalization.
See Heated and Ventilated Front Seats
0 62 and Vehicle Personalization 0143.
If equipped with a remote start heated
steering wheel, it may come on during
a remote start. See Heated Steering
Wheel 0111.
The climate control system will use
the previous settings during a remote
start. The rear window defogger may
come on during remote start based on
cold ambient conditions. The rear
defog indicator light does not come on
during remote start.
Laws in some local communities may
restrict the use of remote starters. For
example, some laws may require a
person using remote start to have the
vehicle in view. Check local
regulations for any requirements.
If your vehicle is low on fuel, do not
use the remote start feature. The
vehicle may run out of fuel. The RKE transmitter range may be
less while the vehicle is running.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE) System
0
28.
Starting the Engine Using Remote
Start
1. Press and release
Qon the RKE
transmitter.
2. Immediately press and hold
/
for at least four seconds or until
the turn signal lamps flash. The
flashing confirms the request to
remote start the vehicle has been
received.
During the remote start, the
doors will be locked and the
parking lamps will remain on as
long as the engine is running.
The engine will shut off after
10 minutes unless a time
extension is done or the ignition
is on. 3. Press the brake pedal and turn
the ignition on to drive the
vehicle.
Extending Engine Run Time
The engine run time can also be
extended by another 10 minutes,
if during the first 10 minutes
Steps 1 and 2 are repeated while the
engine is still running. An extension
can be requested 30 seconds after
starting. This provides a total of
20 minutes.
The remote start can only be
extended once.
A maximum of two remote starts, or a
remote start with an extension, are
allowed between ignition cycles.
The vehicle's ignition must be turned
on and then back to off before the
remote start procedure can be used
again.
Canceling a Remote Start
To cancel a remote start, do any of
the following:
. Press and hold
/until the
parking lamps turn off.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
44 KEYS, DOORS, AND WINDOWS
transmitter will start the vehicle.
If the transmitter is ever damaged,
you may not be able to start your
vehicle.
When trying to start the vehicle, the
security light may come on briefly
when the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
ignition off and try again.
If the vehicle will not change ignition
modes (ACC/ACCESSORY, on, off), and
the RKE transmitter appears to be
undamaged, try another transmitter.
Or, you may try placing the
transmitter in the transmitter pocket
in the center console.
If the ignition modes will not change
with the other transmitter, or with the
transmitter in the transmitter pocket,
your vehicle needs service. If the
ignition does change modes, the first
transmitter may be faulty. See your
dealer who can service the
theft-deterrent system and have a new
RKE transmitter programmed to the
vehicle.It is possible for the immobilizer
system to learn new or replacement
RKE transmitters. Up to eight
transmitters can be programmed for
the vehicle. To program additional
transmitters, see
“Programming
Transmitters to the Vehicle ”under
Remote Keyless Entry (RKE) System
Operation 028.
Do not leave the transmitter or device
that disarms or deactivates the
theft-deterrent system in the vehicle.Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things,
like other vehicles, look farther
away than they really are. If you cut
too sharply into the right lane, you
could hit a vehicle on the right.
Check the inside mirror or glance
over your shoulder before changing
lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from the
driver seat.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
SEATS AND RESTRAINTS 81
Warning (Continued)
Use caution if you should attempt
to restart the engine after a crash
has occurred.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag.
. Airbags are designed to inflate
only once. After an airbag inflates,
you will need some new parts for
the airbag system. If you do not
get them, the airbag system will
not be there to help protect you in
another crash. A new system will
include airbag modules and
possibly other parts. The service
manual for the vehicle covers the
need to replace other parts.
. The vehicle has a crash sensing
and diagnostic module which
records information after a crash. See
Vehicle Data Recording and
Privacy 0345 and Event Data
Recorders 0345.
. Let only qualified technicians
work on the airbag systems.
Improper service can mean that
an airbag system will not work
properly. See your dealer for
service.
Passenger Sensing System
The vehicle has a passenger sensing
system for the front outboard
passenger position. The passenger
airbag status indicator will light on
the overhead console when the vehicle
is started.
United States
Canada
The words ON and OFF, or the
symbols for on and off, will be visible
during the system check. When the
system check is complete, either the
word ON or OFF, or the symbol for on
or off will be visible. See Passenger
Airbag Status Indicator 0126.
The passenger sensing system turns
off the front outboard passenger
frontal airbag and knee airbag under
certain conditions. No other airbag is
affected by the passenger sensing
system.
The passenger sensing system works
with sensors that are part of the front
outboard passenger seat. The sensors
are designed to detect the presence of
a properly seated occupant and
determine if the front outboard

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
110 INSTRUMENTS AND CONTROLS
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . . 111
Steering Wheel Controls . . . . . . . . . 111
Heated Steering Wheel . . . . . . . . . . 111
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Windshield Wiper/Washer . . . . . . . 111
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Power Outlets . . . . . . . . . . . . . . . . . . . . . 113
Wireless Charging . . . . . . . . . . . . . . . . 115
Cigarette Lighter . . . . . . . . . . . . . . . . . . 116
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . 117
Instrument Cluster . . . . . . . . . . . . . . . 118
Speedometer . . . . . . . . . . . . . . . . . . . . . . 122
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 122
Trip Odometer . . . . . . . . . . . . . . . . . . . . 122
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 122
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . 122
Boost Gauge (Performance Configuration Only) . . . . . . . . . . . . 123 Engine Oil Temperature Gauge
(Performance
Configuration Only) . . . . . . . . . . . . 124
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Seat Belt Reminders . . . . . . . . . . . . . . 125
Airbag Readiness Light . . . . . . . . . . 126
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . 126
Charging System Light . . . . . . . . . . . 127
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . 128
Brake System Warning Light . . . . 129
Electric Parking Brake Light . . . . . 130
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . 131
Lane Departure Warning (LDW) Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Lane Keep Assist (LKA) Light . . . 131
Vehicle Ahead Indicator . . . . . . . . . 132
Traction Off Light . . . . . . . . . . . . . . . . 132
StabiliTrak OFF Light . . . . . . . . . . . . 132
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . 133
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . 133
Tire Pressure Light . . . . . . . . . . . . . . . 133
Engine Oil Pressure Light . . . . . . . . 134 Low Fuel Warning Light . . . . . . . . . 134
Security Light . . . . . . . . . . . . . . . . . . . . . 134
High-Beam On Light . . . . . . . . . . . . . 135
Lamps On Reminder . . . . . . . . . . . . . 135
Cruise Control Light . . . . . . . . . . . . . . 135
Door Ajar Light . . . . . . . . . . . . . . . . . . . 136
Information Displays
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . . . . 136
Head-Up Display (HUD) . . . . . . . . . 139
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . 142
Engine Power Messages . . . . . . . . . . 143
Vehicle Speed Messages . . . . . . . . . 143
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . 143
Universal Remote System
Universal Remote System . . . . . . . . 148
Universal Remote System Programming . . . . . . . . . . . . . . . . . . . 148
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . . . . . . 150

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
INSTRUMENTS AND CONTROLS 117
Warning Lights, Gauges,
and Indicators
Warning lights and gauges can signal
that something is wrong before it
becomes serious enough to cause an
expensive repair or replacement.
Paying attention to the warning lights
and gauges could prevent injury.
Some warning lights come on briefly
when the engine is started to indicate
they are working. When one of the
warning lights comes on and stays on
while driving, or when one of the
gauges shows there may be a problem,
check the section that explains what
to do. Waiting to do repairs can be
costly and even dangerous.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
INSTRUMENTS AND CONTROLS 127
United States
Canada
When the vehicle is started, the
passenger airbag status indicator will
light ON and OFF, or the symbol for
on and off, for several seconds as a
system check. Then, after several more
seconds, the status indicator will light
either ON or OFF, or the on or off
symbol, to let you know the status of
the front outboard passenger frontal
airbag and knee airbag. If the word ON or the on symbol is lit
on the passenger airbag status
indicator, it means that the front
outboard passenger frontal airbag and
knee airbag are allowed to inflate.
If the word OFF or the off symbol is lit
on the airbag status indicator, it
means that the passenger sensing
system has turned off the front
outboard passenger frontal airbag and
knee airbag.
If, after several seconds, both status
indicator lights remain on, or if there
are no lights at all, there may be a
problem with the lights or the
passenger sensing system. See your
dealer for service.
{Warning
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong with
the airbag system. To help avoid
injury to yourself or others, have
the vehicle serviced right away. See
(Continued)
Warning (Continued)
Airbag Readiness Light0126 for
more information, including
important safety information.
Charging System Light
On some vehicles the charging system
light comes on briefly when the
ignition is turned on, but the engine is
not running, as a check to show the
light is working. It should go out when
the engine is started. For vehicles with
a reconfigurable cluster, this light may
not come on when the ignition is
turned on.
If the light stays on, or comes on
while driving, there may be a problem
with the electrical charging system.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
128 INSTRUMENTS AND CONTROLS
Have it checked by your dealer.
Driving while this light is on could
drain the battery.
When this light comes on, or is
flashing, the Driver Information
Center (DIC) also displays a message.
If a short distance must be driven
with the light on, be sure to turn off
all accessories, such as the radio and
air conditioner.
Malfunction Indicator Lamp
(Check Engine Light)
This light is part of the vehicle’s
emission control on-board diagnostic
system. If this light is on while the
engine is running, a malfunction has
been detected and the vehicle may
require service. The light should come
on to show that it is working when
the ignition is in Service Mode. See
Ignition Positions0181.
Malfunctions are often indicated by
the system before any problem is
noticeable. Being aware of the light
and seeking service promptly when it
comes on may prevent damage.
Caution
If the vehicle is driven continually
with this light on, the emission
control system may not work as
well, the fuel economy may be
lower, and the vehicle may not run
smoothly. This could lead to costly
repairs that might not be covered
by the vehicle warranty.
Caution
Modifications to the engine,
transmission, exhaust, intake,
or fuel system, or the use of
replacement tires that do not meet
the original tire specifications, can
cause this light to come on. This
could lead to costly repairs not
covered by the vehicle warranty.
This could also affect the vehicle’s
ability to pass an Emissions
Inspection/Maintenance test. See
Accessories and Modifications 0234.
If the light is f lashing : A
malfunction has been detected that
could damage the emission control
system and increase vehicle
emissions. Diagnosis and service may
be required.
To help prevent damage, reduce
vehicle speed and avoid hard
accelerations and uphill grades.
If towing a trailer, reduce the amount
of cargo being hauled as soon as
possible.

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
INSTRUMENTS AND CONTROLS 129
If the light continues to flash, find a
safe place to park. Turn the vehicle off
and wait at least 10 seconds before
restarting the engine. If the light is
still flashing, follow the previous
guidelines and see your dealer for
service as soon as possible.
If the light is on steady :A
malfunction has been detected.
Diagnosis and service may be
required.
Check the following:
. If fuel has been added to the
vehicle using the capless fuel
funnel adapter, make sure that it
has been removed. See “Filling the
Tank with a Portable Gas Can ”
under Filling the Tank 0224. The
diagnostic system can detect if the
adapter has been left installed in
the vehicle, allowing fuel to
evaporate into the atmosphere.
A few driving trips with the
adapter removed may turn off the
light.
. Poor fuel quality can cause
inefficient engine operation and
poor driveability, which may go away once the engine is warmed
up. If this occurs, change the fuel
brand. It may require at least one
full tank of the proper fuel to turn
the light off. See
Fuel0222.
If the light remains on, see your
dealer.
Emissions Inspection and
Maintenance Programs
If the vehicle requires an Emissions
Inspection/Maintenance test, the test
equipment will likely connect to the
vehicle's Data Link Connector (DLC).
The DLC is under the instrument
panel to the left of the steering wheel.
Connecting devices that are not used
to perform an Emissions Inspection/
Maintenance test or to service the
vehicle may affect vehicle operation.
See Add-On Electrical Equipment 0230.
See your dealer if assistance is needed. The vehicle may not pass
inspection if:
.
The light is on when the engine is
running.
. The light does not come on when
the ignition is in Service Mode.
. Critical emission control systems
have not been completely
diagnosed. If this happens, the
vehicle would not be ready for
inspection and might require
several days of routine driving
before the system is ready for
inspection. This can happen if the
12-volt battery has recently been
replaced or run down, or if the
vehicle has been recently serviced.
See your dealer if the vehicle will not
pass or cannot be made ready for
the test.Brake System Warning
Light
The vehicle brake system consists of
two hydraulic circuits. If one circuit is
not working, the remaining circuit can

Cadillac XTS Owner Manual (GMNA-Localizing-U.S./Canada-11354412) -
2018 - crc - 11/16/17
INSTRUMENTS AND CONTROLS 133
Traction Control System
(TCS)/StabiliTrak Light
This light comes on briefly when the
engine is started.
If the light does not come on, have
the vehicle serviced by your dealer.
If the system is working normally, the
indicator light turns off.
If the light is on and not flashing, the
TCS and potentially the StabiliTrak
system have been disabled. A Driver
Information Center (DIC) message
may display. Check the DIC messages
to determine which feature(s) is no
longer functioning and whether the
vehicle requires service.
If the light is on and flashing, the TCS
and/or the StabiliTrak system is
actively working.See
Traction Control/Electronic Stability
Control 0193.
Engine Coolant
Temperature Warning Light
On some vehicles this light comes on
briefly while starting the vehicle. If it
does not, have the vehicle serviced by
the dealer. If the system is working
normally the indicator light goes off.
For vehicles with the reconfigurable
cluster, this light may not come on
when starting the vehicle.
Caution
The engine coolant temperature
warning light indicates that the
vehicle has overheated. Driving with
this light on can damage the engine
(Continued)
Caution (Continued)
and it may not be covered by the
vehicle warranty. SeeEngine
Overheating 0249.
The engine coolant temperature
warning light comes on when the
engine has overheated.
If this happens pull over and turn off
the engine as soon as possible. See
Engine Overheating 0249.
Tire Pressure Light
For vehicles with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the engine is
started. It provides information about
tire pressures and the TPMS.