warning lights CADILLAC XT4 2021 Owner's Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
SEATS AND RESTRAINTS 47
If equipped, the rear heated seat
buttons are on the rear of the center
console.
Press
MorLto heat the left outboard
or right outboard seat. Press the
button once for the highest setting.
With each press of the button, the
seat will change to the next lower
setting, and then to the off setting.
The indicator lights on the buttons
indicate three for the highest setting
and one for the lowest.
If the heated rear seats are on the
highest setting, the level may
automatically be lowered after
approximately 30 minutes.
Seat Belts
This section describes how to use seat
belts properly, and some things not
to do.
{Warning
Do not let anyone ride where a seat
belt cannot be worn properly. In a
crash, if you or your passenger(s)
are not wearing seat belts, injuries
can be much worse than if you are
wearing seat belts. You can be
seriously injured or killed by hitting
things inside the vehicle harder or
by being ejected from the vehicle.
In addition, anyone who is not
buckled up can strike other
passengers in the vehicle.
It is extremely dangerous to ride in
a cargo area, inside or outside of a
vehicle. In a collision, passengers
riding in these areas are more likely
to be seriously injured or killed. Do
not allow passengers to ride in any
area of the vehicle that is not
equipped with seats and seat belts.
(Continued)
Warning (Continued)
Always wear a seat belt, and check
that all passenger(s) are restrained
properly too.
This vehicle has indicators as a
reminder to buckle the seat belts. See
Seat Belt Reminders 0103.
Why Seat Belts Work
When riding in a vehicle, you travel as
fast as the vehicle does. If the vehicle
stops suddenly, you keep going until
something stops you. It could be the
windshield, the instrument panel,
or the seat belts!

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
90 INSTRUMENTS AND CONTROLS
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . . . . 91
Steering Wheel Controls . . . . . . . . . . 91
Heated Steering Wheel . . . . . . . . . . . . 91
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Windshield Wiper/Washer . . . . . . . . 92
Rear Window Wiper/Washer . . . . . . 94
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Power Outlets . . . . . . . . . . . . . . . . . . . . . . 95
Wireless Charging . . . . . . . . . . . . . . . . . 96
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . 99
Instrument Cluster . . . . . . . . . . . . . . . . 99
Speedometer . . . . . . . . . . . . . . . . . . . . . . 101
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 101
Trip Odometer . . . . . . . . . . . . . . . . . . . . 101
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 102
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . 102
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Seat Belt Reminders . . . . . . . . . . . . . . 103
Airbag Readiness Light . . . . . . . . . . 104 Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . 104
Charging System Light . . . . . . . . . . . 105
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . 105
Brake System Warning Light . . . . 107
Electric Parking Brake Light . . . . . 107
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . 108
Gear Shifting Light . . . . . . . . . . . . . . . 108
Performance Shifting Light . . . . . . 109
All-Wheel-Drive Light . . . . . . . . . . . . 109
Lane Keep Assist (LKA) Light . . . 109
Vehicle Ahead Indicator . . . . . . . . . 109
Pedestrian Ahead Indicator . . . . . . 110
Traction Off Light . . . . . . . . . . . . . . . . 110
StabiliTrak OFF Light . . . . . . . . . . . . 110
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . 110
Engine Coolant Temperature Warning Light (Uplevel) . . . . . . . . 111
Driver Mode Control Light . . . . . . . 111
Tire Pressure Light . . . . . . . . . . . . . . . 111
Engine Oil Pressure Light . . . . . . . . 112
Low Fuel Warning Light . . . . . . . . . 112
Security Light . . . . . . . . . . . . . . . . . . . . . 113
High-Beam On Light . . . . . . . . . . . . . 113
Lamps On Reminder . . . . . . . . . . . . . 113 Cruise Control Light . . . . . . . . . . . . . . 113
Door Ajar Light . . . . . . . . . . . . . . . . . . . 114
Information Displays
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . . . . 114
Head-Up Display (HUD) . . . . . . . . . 116
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . 119
Engine Power Messages . . . . . . . . . . 120
Vehicle Speed Messages . . . . . . . . . 120
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . 120
Universal Remote System
Universal Remote System . . . . . . . . 125
Universal Remote System Programming . . . . . . . . . . . . . . . . . . . 125
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . . . . . . 127

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
INSTRUMENTS AND CONTROLS 99
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.
Instrument Cluster
Base Level
1.Tachometer 0102
2. Driver Information Center (DIC)
0114
3. Speedometer 0101 4.
Engine Coolant Temperature Gauge
0103
5. Fuel Gauge 0102

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
INSTRUMENTS AND CONTROLS 105
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
Airbag Readiness Light0104 for
more information, including
important safety information.
Charging System Light
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.
If the light stays on, or comes on
while driving, there may be a problem
with the electrical charging system.
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. Find a safe place to
stop the vehicle.
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 Positions
0219.
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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
LIGHTING 129
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . . . 129
Exterior Lamps Off Reminder . . . 131
Headlamp High/Low-BeamChanger . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . 131
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 131
Automatic Headlamp System . . . 131
Hazard Warning Flashers . . . . . . . . 132
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Cornering Lamps . . . . . . . . . . . . . . . . . 133
Interior Lighting
Instrument Panel Illumination Control . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Courtesy Lamps . . . . . . . . . . . . . . . . . . 133
Dome Lamps . . . . . . . . . . . . . . . . . . . . . 133
Reading Lamps . . . . . . . . . . . . . . . . . . . 134
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . . . . 134
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . 134
Battery Power Protection . . . . . . . . 135
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is on the
turn signal lever.
Turn the control to the following
positions:
O:Turns the exterior lamps off and
deactivates the AUTO mode. Turn to
Oagain to reactivate the AUTO mode.
In Canada, the headlamps will
automatically reactivate when the
vehicle is shifted out of P (Park).
AUTO : Automatically turns the
exterior lamps on and off, depending
on outside lighting.
;: Turns on the parking lamps
including all lamps, except the
headlamps.
2: Turns on the headlamps together
with the parking lamps and
instrument panel lights.
IntelliBeam System
If equipped, this system turns the
vehicle's high-beam headlamps on and
off according to surrounding traffic
conditions.
The system turns the high-beam
headlamps on when it is dark enough
and there is no other traffic present.
This light
bcomes on in the
instrument cluster when the
IntelliBeam system is enabled.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
132 LIGHTING
light outside when the vehicle leaves
the garage, there is a slight delay
before the automatic headlamp
system changes to the Daytime
Running Lamps (DRL). During that
delay, the instrument cluster may not
be as bright as usual. Make sure the
instrument panel brightness control is
in the full bright position. See
Instrument Panel Illumination Control
0133.
When it is bright enough outside, the
headlamps will turn off or may change
to DRL.
The automatic headlamp system turns
off when the exterior lamp control is
turned to
Oor the ignition is off.
For vehicles sold in Canada, this
control only works when the
transmission is in P (Park).
Lights On with Wipers
If the windshield wipers are activated
in daylight with the engine on, and
the exterior lamp control is in AUTO,
the headlamps, parking lamps, and
other exterior lamps come on. The
transition time for the lamps coming
on varies based on wiper speed. When the wipers are not operating, these
lamps turn off. Move the exterior
lamp control to
Oor;to disable
this feature.
Hazard Warning Flashers
|: Press|to make the front and
rear turn signal lamps flash on and
off. Press again to turn the
flashers off.
The hazard warning flashers turn on
automatically if the airbags deploy.
Turn and Lane-Change
Signals
Move the lever all the way up or down
to signal a turn.
An arrow on the instrument cluster
flashes in the direction of the turn or
lane change.
Raise or lower the lever until the
arrow starts to flash to signal a lane
change. Hold it there until the lane
change is completed. If the lever is
briefly pressed and released, the turn
signal flashes three times.
The turn and lane-change signal can
be turned off manually by moving the
lever back to its original position.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
258 DRIVING AND OPERATING
Forward Collision Alert
(FCA) System
If equipped, the FCA system may help
to avoid or reduce the harm caused by
front-end crashes. When approaching
a vehicle ahead too quickly, FCA
provides a red flashing alert on the
windshield and rapidly beeps or pulses
the driver seat. FCA also lights an
amber visual alert if following another
vehicle much too closely.
FCA detects vehicles within a distance
of approximately 60 m (197 ft) and
operates at speeds above 8 km/h
(5 mph). If the vehicle has Adaptive
Cruise Control (ACC), it can detect
vehicles to distances of approximately
110 m (360 ft) and operates at all
speeds. SeeAdaptive Cruise Control
(Advanced) 0240.
{Warning
FCA is a warning system and does
not apply the brakes. When
approaching a slower-moving or
stopped vehicle ahead too rapidly,
or when following a vehicle too
(Continued)
Warning (Continued)
closely, FCA may not provide a
warning with enough time to help
avoid a crash. It also may not
provide any warning at all. FCA
does not warn of pedestrians,
animals, signs, guardrails, bridges,
construction barrels, or other
objects. Be ready to take action and
apply the brakes. SeeDefensive
Driving 0206.
FCA can be disabled. See “Collision/
Detection Systems” underVehicle
Personalization 0120.
Detecting the Vehicle Ahead
FCA warnings will not occur unless
the FCA system detects a vehicle
ahead. When a vehicle is detected, the
vehicle ahead indicator will display
green. Vehicles may not be detected on curves, highway exit ramps,
or hills, due to poor visibility; or if a
vehicle ahead is partially blocked by
pedestrians or other objects. FCA will
not detect another vehicle ahead until
it is completely in the driving lane.
{Warning
FCA does not provide a warning to
help avoid a crash, unless it detects
a vehicle. FCA may not detect a
vehicle ahead if the FCA sensor is
blocked by dirt, snow, or ice, or if
the windshield is damaged. It may
also not detect a vehicle on winding
or hilly roads, or in conditions that
can limit visibility such as fog, rain,
or snow, or if the headlamps or
windshield are not cleaned or in
proper condition. Keep the
windshield, headlamps, and FCA
sensors clean and in good repair.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
264 DRIVING AND OPERATING
that occur with moving vehicles in the
side blind zone (or spot) areas or with
vehicles rapidly approaching these
areas from behind. The LCA warning
display will light up in the
corresponding outside side mirror and
will flash if the turn signal is on.
{Warning
LCA does not alert the driver to
vehicles outside of the system
detection zones, pedestrians,
bicyclists, or animals. It may not
provide alerts when changing lanes
under all driving conditions. Failure
to use proper care when changing
lanes may result in injury, death,
or vehicle damage. Before making a
lane change, always check mirrors,
glance over your shoulder, and use
the turn signals.LCA Detection Zones
1. SBZA Detection Zone
2. LCA Detection Zone
The LCA sensor covers a zone of
approximately one lane over from
both sides of the vehicle, or 3.5 m
(11 ft). The height of the zone is
approximately between 0.5 m (1.5 ft)
and 2 m (6 ft) off the ground. The Side
Blind Zone Alert (SBZA) warning area
starts at approximately the middle of
the vehicle and goes back 5 m (16 ft).
Drivers are also warned of vehicles
rapidly approaching from up to 70 m
(230 ft) behind the vehicle.
How the System Works
The LCA symbol lights up in the side
mirrors when the system detects a
moving vehicle in the next lane over
that is in the side blind zone or
rapidly approaching that zone from
behind. A lit LCA symbol indicates it
may be unsafe to change lanes. Before
making a lane change, check the LCA
display, check mirrors, glance over
your shoulder, and use the turn
signals.
Left Side Mirror
DisplayRight Side Mirror Display
When the vehicle is started, both
outside mirror LCA displays will
briefly come on to indicate the system
is operating. When the vehicle is in a
forward gear, the left or right side
mirror display will light up if a moving
vehicle is detected in the next lane
over in that blind zone or rapidly
approaching that zone. If the turn

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
VEHICLE CARE 343
Warning (Continued)
If you do not follow these steps
exactly, some or all of these things
can hurt you.
Caution
Ignoring these steps could result in
costly damage to the vehicle that
would not be covered by the vehicle
warranty. Trying to start the vehicle
by pushing or pulling it will not
work, and it could damage the
vehicle.
1. Discharged Remote BatteryPositive Terminal
2. Discharged Remote Battery Negative Ground Terminal
3. Good Battery Negative Terminal
4. Good Battery Positive Terminal
The jump start remote positive
terminal (1) and the remote negative
ground terminal (2) for the discharged
battery are on the driver side of the
vehicle.
The jump start negative terminal (3)
and positive terminal (4) are on the
battery of the vehicle providing the
jump start.
The positive jump start connection for
the discharged battery is under a
cover. Remove the cover to expose the
terminal.
1. Check the other vehicle. It must have a 12-volt battery with a
negative ground system.
Caution
If the other vehicle does not have a
12-volt system with a negative
ground, both vehicles can be
(Continued)
Caution (Continued)
damaged. Only use a vehicle that
has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake firmly and put the transmission in P (Park).
See Shifting Into Park 0224.
Caution
If any accessories are left on or
plugged in during the jump starting
procedure, they could be damaged.
The repairs would not be covered
by the vehicle warranty. Whenever
possible, turn off or unplug all
accessories on either vehicle when
jump starting.
4. Turn the ignition off. Turn off all lights and accessories in both
vehicles, except the hazard warning
flashers if needed.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
INDEX 399
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
FluidAutomatic Transmission . . . . . . . . . 289
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 28
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383
Front Pedestrian Braking (FPB)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Front Seats Heated and Ventilated . . . . . . . . . . . . 43
Front Storage . . . . . . . . . . . . . . . . . . . . . . . . 84
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Economy, Driving for Better . . . . . 205
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 270
Filling the Tank . . . . . . . . . . . . . . . . . . . 268
Foreign Countries . . . . . . . . . . . . . . . . . 268
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Low Fuel Warning Light . . . . . . . . . 112
Management, Active . . . . . . . . . . . . . . 225
Prohibited Fuels . . . . . . . . . . . . . . . . . . 268
Recommended . . . . . . . . . . . . . . . . . . . . 267
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 267 Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Fuses and Circuit Breakers . . . . . . . 303
Instrument Panel Fuse Block . . . . 306
G
Garage Door Opener . . . . . . . . . . . . . . . . 125 Programming . . . . . . . . . . . . . . . . . . . . . . 125
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 300
Gauges Engine Coolant Temperature . . . . 103
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Speedometer . . . . . . . . . . . . . . . . . . . . . . 101
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 102
Trip Odometer . . . . . . . . . . . . . . . . . . . . 101
Warning Lights and Indicators . . . 99
Gear Shifting Light . . . . . . . . . . . . . . . . . 108
General Information Service and Maintenance . . . . . . . . 357
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 282
Global Positioning System (GPS) . . . . . . . . . . . . . . . . . . . . . . 163
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377 Guidance
Problems with the Route . . . . . . . . . 163
H
Hazard Warning Flashers . . . . . . . . . . 132
HD Radio Technology . . . . . . . . . . . . . . 144
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 37
Head-up Display . . . . . . . . . . . . . . . . . . . . 116
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 131
Bulb Replacement . . . . . . . . . . . . . . . . 301
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . . . . 131
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 131
High-Beam On Light . . . . . . . . . . . . . . 113
High/Low Beam Changer . . . . . . . . . 131
Lamps On Reminder . . . . . . . . . . . . . . 113
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Steering Wheel . . . . . . . . . . . . . . . . . . . . . 91
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 29
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
High-Beam On Light . . . . . . . . . . . . . . . . 113