2023 CADILLAC XT4 Owners Manual

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
128 Instruments and Controls
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 Equipment0325.
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
MetricEnglish
This light comes on briefly
when the vehicle is turned on
to show that the light is
working. If it does not come on
then, have it fixed so it will be
ready to warn you if there is a
problem.
If the light comes on and stays
on, there is a brake problem.
Have the brake system
inspected right away. This light may come on if the brake
fluid is low. See Brake Fluid
0
345.
If the light comes on while
driving, pull off the road and
stop carefully. The brake
system has electric brake
boost. Vehicle speed may be
limited when the brake system
warning light comes on. The
brake pedal might be harder to
push, or the brake pedal may
go closer to the floor. It could
take longer to stop. If the light
is still on, have the vehicle
towed for service. See
Transporting a Disabled
Vehicle 0407.
{Warning
The brake system might not
be working properly if the
brake system warning light
is on. Driving with the brake
system warning light on can
lead to a crash. If the light is
still on after the vehicle has
(Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Instruments and Controls 129
Warning (Continued)
been pulled off the road and
carefully stopped, have the
vehicle towed for service.
Electric Parking Brake
Light
MetricEnglish BaseLevel
English Uplevel
This light comes on when the
parking brake is applied. If the
light continues flashing after the parking brake is released,
or while driving, there is a
problem with the Electric
Parking Brake system.
A message may also display in
the Driver Information
Center (DIC).
If the light does not come on,
or remains flashing, see your
dealer.
Service Electric
Parking Brake Light
This light should come on
briefly when the vehicle is
turned on. If it does not come
on, have it fixed so it will be
ready to warn if there is a
problem.
If this light stays on or comes
on while driving, there is a
problem with the Electric
Parking Brake (EPB). Take the
vehicle to a dealer as soon as
possible. In addition to the
parking brake, other safety
functions that utilize the EPB
may also be degraded.
A message may also display in
the Driver Information Center
(DIC). See Electric Parking
Brake
0264.
Antilock Brake
System (ABS)
Warning Light
This light comes on briefly
when the vehicle is turned on
to show that the light is
working. If it does not come on
then, have it fixed so it will be
ready to warn you if there is a
problem.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
130 Instruments and Controls
If the ABS warning light stays
on, or comes on again while
driving, the vehicle needs
service. A chime may also
sound when the light stays on.
If the ABS warning light is the
only light on, the vehicle has
regular brakes, but ABS is not
functioning.
If both the ABS warning light
and the brake system warning
light are on, ABS is not
functioning and there is a
problem with the regular
brakes. See your dealer for
service.
See Brake System Warning
Light0128.
Gear Shifting Light
If equipped, this light comes on
when a gear shift is
recommended for best fuel
economy. When the arrow is
pointed up, an upshift is
recommended. When the
arrow is pointed down, a
downshift is recommended.
The number displayed with the
arrow indicates the
recommended gear.
Performance Shifting
Light
If equipped, this light may
display green when Sport
Mode is activated and certain
driving conditions are met.
Sport Mode detects when the
vehicle is being driven in a
sporty manner, and adjusts the shifting of the gears
accordingly. See Driver Mode
Control
0269.
All-Wheel-Drive Light
All-Wheel-Drive Light
Front-Wheel-Drive Light
If equipped, the corresponding
light comes on when an
All-Wheel Drive (AWD) mode
or Front-Wheel-Drive mode is
selected. See Driver Mode
Control 0269.
If the light turns amber, there
may be a malfunction. See
your dealer.

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Instruments and Controls 131
Lane Keep Assist
(LKA) Light
If equipped, the Lane Keep
Assist Light may display the
following colors:
.Blank: LKA is disabled.
.White: Appears when the
vehicle starts. A steady
white light indicates that
LKA is not ready to assist.
.Green: Appears when LKA is
turned on and ready to
assist. LKA will gently turn
the steering wheel if the
vehicle approaches a
detected lane marking.
.Amber: Appears when LKA is
active. The light flashes
amber as a Lane Departure
Warning (LDW) alert to
indicate that the lane
marking has beenunintentionally crossed.
If the system detects you
are steering intentionally (to
pass or change lanes), the
LDW alert may not display.
LKA will not assist or alert if
the turn signal is active in the
direction of lane departure,
or if LKA detects that you are
accelerating, braking,
or actively steering. See Lane
Keep Assist (LKA) 0307.
Vehicle Ahead
Indicator
If equipped, this indicator will
display green when a vehicle is
detected ahead and amber
when you are following a
vehicle ahead much too
closely. See Forward Collision Alert
(FCA) System
0297.
Pedestrian Ahead
Indicator
If equipped, this indicator will
display amber when a nearby
pedestrian is detected in front
of the vehicle.
See Front Pedestrian Braking
(FPB) System 0302.
Traction Off Light
This light comes on briefly
when the vehicle is turned on
to show that the light is

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
132 Instruments and Controls
working. If it does not come on
then, have it fixed so it will be
ready to warn you if there is a
problem.
The traction off light comes on
when the Traction Control
System (TCS) has been turned
off. If StabiliTrak/Electronic
Stability Control (ESC) is
turned off, TCS is also turned
off. To turn TCS and ESC off
and on, see Traction Control/
Electronic Stability Control
0267.
If TCS is off, wheel slip during
acceleration is not limited
unless necessary to help
protect the driveline from
damage. Adjust driving
accordingly.
StabiliTrak OFF Light
This light comes on briefly
when the vehicle is turned on
to show that the light is
working. If it does not come on
then, have it fixed so it will be
ready to warn you if there is a
problem.
This light comes on when the
StabiliTrak/Electronic Stability
Control (ESC) system is turned
off. If StabiliTrak/ESC is off,
the Traction Control System
(TCS) is also off. To turn ESC
off and on, see Traction
Control/Electronic Stability
Control 0267.
If ESC and TCS are off, the
systems do not assist in
controlling the vehicle. Adjust
driving accordingly.Traction Control
System (TCS)/
StabiliTrak Light
This light comes on briefly
when the vehicle is turned on
to show that the light is
working. If it does not come on
then, have it fixed so it will be
ready to warn you if there is a
problem.
If the light is on and not
flashing, the TCS and
potentially the StabiliTrak/ESC
system are not fully
operational and may not assist
in maintaining control. Adjust
driving accordingly. If the
condition persists, see your
dealer as soon as possible.
A Driver Information Center
(DIC) message may display.

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Instruments and Controls 133
The light flashes when the
TCS and/or the StabiliTrak/
ESC system is actively
working.
See Traction Control/
Electronic Stability Control
0267.
Engine Coolant
Temperature Warning
Light (Uplevel)
This light comes on briefly
while starting the vehicle.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally the
indicator light goes off.
Caution
The engine coolant
temperature warning light
indicates that the vehicle
has overheated. Driving with
this light on can damage the
engine and it may not be
covered by the vehicle
warranty. See Engine
Overheating 0342.
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 0342.
Driver Mode Control
Light
This light comes on when
Sport Mode is selected.
This light comes on when
Snow/Ice Mode is selected.
This light comes on when
Off-Road Mode is selected.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
134 Instruments and Controls
See Driver Mode Control
0269.
Tire Pressure Light
If equipped with the Tire
Pressure Monitor System
(TPMS), this light comes on
briefly when the vehicle is
started. It provides
information about tire
pressures and the TPMS.
When the Light Is On Steady
This indicates that one or
more of the tires are
significantly underinflated.
A Driver Information Center
(DIC) tire pressure message
may also display. Stop as soon
as possible, and inflate the
tires to the pressure value shown on the Tire and
Loading Information label. See
Tire Pressure
0372.
When the Light Flashes First
and Then Is On Steady
If the light flashes for about a
minute and then stays on,
there may be a problem with
the TPMS. If the problem is
not corrected, the light will
come on every time the
vehicle is started. See Tire
Pressure Monitor Operation
0 376.
Engine Oil Pressure
Light
Caution
Driving the vehicle with low
engine oil pressure can
damage the engine and the
repairs would not be
covered by the vehicle
warranty.
If the engine oil pressure
light comes on while driving:
(Continued)
Caution (Continued)
1. Stop in a safe locationand turn off the engine.
2. Check the oil level. See Engine Oil 0332.
3. Add oil if the oil level is below the normal
operating range.
4. Restart the vehicle. If the engine oil pressure light
stays on for more than
10 seconds, turn the
vehicle back off. Do not
restart the vehicle. See
your dealer for service.
This light should come on
briefly when the engine starts.
When the engine is off and the
vehicle is on, the light should

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Instruments and Controls 135
remain illuminated. If it does
not come on under either
condition, contact your dealer.
If the light comes on and stays
on when the engine is running,
it may not have adequate oil
pressure. The oil level may be
low or there may be some
other oil system problem. Turn
the engine off when it is safe
to do so and contact your
dealer.
Low Fuel Warning
Light
A Low Fuel Warning Light
near the fuel gauge comes on
briefly when the ignition is
turned on as a check to show
it is working.It also comes on when the fuel
gauge indicator nears empty.
The light turns off when fuel is
added. If it does not, have the
vehicle serviced.
Security Light
The security light should come
on briefly as the engine is
started. If it 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 stays on and the
engine does not start, there
could be a problem with the
theft-deterrent system. See
Immobilizer Operation
033.
High-Beam On Light
This light comes on when the
high-beam headlamps are in
use. See Headlamp High/
Low-Beam Changer 0150.
IntelliBeam Light
This light comes on when the
IntelliBeam system,
if equipped, is enabled. See
Exterior Lamp Controls 0148.