2021 CADILLAC XT4 headlamp

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
LIGHTING 131
Exterior Lamps Off
Reminder
A warning chime sounds if the driver
door is opened while the ignition is off
and the exterior lamps are on.
Headlamp High/Low-Beam
Changer
3:Push the turn signal lever away
from you and release, to turn the high
beams on. To return to low beams,
push the lever again or pull it toward
you and release.
This indicator light turns on in the
instrument cluster when the
high-beam headlamps are on.
Flash-to-Pass
To flash the high beams, pull the turn
signal lever toward you, and release.
Daytime Running
Lamps (DRL)
DRL can make it easier for others to
see the front of your vehicle during
the day. Fully functional DRL are
required on all vehicles first sold in
Canada.
The dedicated DRL will come on when
all of the following conditions are met:
.The ignition is on.
.The exterior lamp control is
in AUTO.
.The light sensor determines it is
daytime.
.The parking brake is released or the
vehicle is not in P (Park).
When the DRL are on, the taillamps,
sidemarker lamps, and other lamps
will not be on.
The DRL turn off when the headlamps
are turned to
Oor the ignition is off.
For vehicles first sold in Canada, the
DRL can only be turned off when the
vehicle is parked.
Automatic Headlamp
System
When the exterior lamp control is set
to AUTO and it is dark enough
outside, the headlamps come on
automatically.
There is a light sensor on top of the
instrument panel. Do not cover the
sensor.
The system may also turn on the
headlamps when driving through a
parking garage or tunnel.
If the vehicle is started in a dark
garage, the automatic headlamp
system comes on immediately. If it is

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
LIGHTING 133
If after signaling a turn or lane
change, the arrow flashes rapidly or
does not come on, a signal bulb may
be burned out.
Replace any burned out bulbs. If a
bulb is not burned out, check the fuse.
SeeFuses and Circuit Breakers 0303.
Cornering Lamps
If equipped with cornering lamps, they
automatically come on when all of the
following occur:
.The low-beam headlamps are on.
.The turn signals are activated or the
steering wheel is at a turning angle.
.The vehicle speed is below 40 km/h
(25 mph).
Interior Lighting
Instrument Panel
Illumination Control
This feature adjusts the brightness of
all illuminated controls.
D:Move the thumbwheel up or
down to brighten or dim the lights.
The thumbwheel is functional at
night, or when the headlamps or
parking lamps are ON.
The brightness of the displays
automatically adjusts based on
outdoor lighting. The instrument panel illumination control will set the
lowest level to which the display will
be automatically adjusted.
Courtesy Lamps
The courtesy lamps come on when
any door is opened, the remote unlock
is pressed, or when the ignition is
switched off. To deactivate the dome
lamp override, press
jOFF and
the indicator light on the button will
turn off.
Dome Lamps
The dome lamp controls are in the
overhead console.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
LIGHTING 135
off or any door is opened. The exterior
lamps and dome lamp remain on after
the door is closed for a set amount of
time, then automatically turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
The exit lighting for exterior lights can
be changed. SeeVehicle Personalization
0 120.
Battery Power Protection
The battery saver feature is designed
to protect the vehicle's battery.
If some interior lamps are left on and
the ignition is turned off, the battery
rundown protection system
automatically turns the lamp off after
some time.
Exterior Lighting Battery
Saver
The exterior lamps turn off about
10 minutes after the ignition is turned
off, if the parking lamps or headlamps
have been manually left on. This
protects against draining the battery.
To restart the 10-minute timer, turn the exterior lamp control to the off
position and then back to the parking
lamp or headlamp position.
To keep the lamps on for more than
10 minutes, the ignition must be on or
in ACC/ACCESSORY.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
210 DRIVING AND OPERATING
Before driving on a hill, assess the
steepness, traction, and obstructions.
If the terrain ahead cannot be seen,
get out of the vehicle and walk the hill
before driving further.
When driving on hills:
.Use a low gear and keep a firm grip
on the steering wheel.
.Maintain a slow speed.
.When possible, drive straight up or
down the hill.
.Slow down when approaching the
top of the hill.
.Use headlamps even during the day
to make the vehicle more visible.
{Warning
Driving to the top of a hill at high
speed can cause a crash. There
could be a drop-off, embankment,
cliff, or even another vehicle. You
could be seriously injured or killed.
As you near the top of a hill, slow
down and stay alert.
.Never go downhill forward or
backward with the transmission in
N (Neutral). The brakes could
overheat and you could lose control.
.When driving down a hill, keep the
vehicle headed straight down. Use a
low gear because the engine will
work with the brakes to slow the
vehicle and help keep the vehicle
under control.
{Warning
Heavy braking when going down a
hill can cause your brakes to
overheat and fade. This could cause
loss of control and you or others
could be injured or killed. Apply the
brakes lightly when descending a
hill and use a low gear to keep
vehicle speed under control.
If the vehicle stalls on a hill: 1. Apply the brakes to stop the vehicle, and then apply the parking
brake. 2. Shift into P (Park) and then restart
the engine.
.If driving uphill when the
vehicle stalls, shift to
R (Reverse), release the parking
brake, and back straight down.
.Never try to turn the vehicle
around. If the hill is steep
enough to stall the vehicle, it is
steep enough to cause it to
roll over.
.If you cannot make it up the
hill, back straight down the hill.
.Never back down a hill in
N (Neutral) using only the
brake.
.The vehicle can roll backward
quickly and you could lose
control.
.If driving downhill when the
vehicle stalls, shift to a lower
gear, release the parking brake,
and drive straight down the hill.
3. If the vehicle cannot be restarted after stalling, set the parking brake,
shift the transmission into P (Park),
and turn the vehicle off.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
214 DRIVING AND OPERATING
.Antilock Brake System (ABS)
improves vehicle stability during
hard stops, but the brakes should be
applied sooner than when on dry
pavement. SeeAntilock Brake System
(ABS) 0232.
.Allow greater following distance and
watch for slippery spots. Icy patches
can occur on otherwise clear roads
in shaded areas. The surface of a
curve or an overpass can remain icy
when the surrounding roads are
clear. Avoid sudden steering
maneuvers and braking while
on ice.
.Turn off cruise control.
.Select All-Wheel Drive (AWD) Mode
for vehicles equipped with AWD.
Select Snow/Ice Mode for FWD only
vehicles. See Driver Mode Control
0 236 and
All-Wheel Drive 0232.
Blizzard Conditions
Stop the vehicle in a safe place and
signal for help. Stay with the vehicle
unless there is help nearby. If possible,
use Roadside Service. See Roadside
Service 0378. To get help and keep
everyone in the vehicle safe:
.Turn on the hazard warning
flashers.
.Tie a red cloth to an outside mirror.
{Warning
Snow can trap engine exhaust
under the vehicle. This may cause
exhaust gases to get inside. Engine
exhaust contains carbon monoxide
(CO), which cannot be seen or
smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in snow:
.Clear snow from the base of the
vehicle, especially any blocking
the exhaust pipe.
.Open a window about 5 cm (2 in)
on the vehicle side that is away
from the wind, to bring in
fresh air.
.Fully open the air outlets on or
under the instrument panel.
(Continued)
Warning (Continued)
.Adjust the climate control
system to circulate the air inside
the vehicle and set the fan speed
to the highest setting. See
“Climate Control Systems.”
For more information about CO, see
Engine Exhaust 0226.
To save fuel, run the engine for short
periods to warm the vehicle and then
shut the engine off and partially close
the window. Moving about to keep
warm also helps.
If it takes time for help to arrive,
when running the engine, push the
accelerator pedal slightly so the
engine runs faster than the idle speed.
This keeps the battery charged to
restart the vehicle and to signal for
help with the headlamps. Do this as
little as possible, to save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels
to free the vehicle when stuck in sand,
mud, ice, or snow.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
DRIVING AND OPERATING 249
Warning (Continued)
.Work if the detection sensor is
not cleaned or is covered by ice,
snow, mud, or dirt.
.Work if the detection sensor is
covered up, such as with a
sticker, magnet, or metal plate.
.Work if the detection sensor
viewing zone is interrupted by an
installed accessory, such as a
bike rack, or hitch mounted
cargo carrier.
.Work if the area surrounding the
detection sensor is damaged or
not properly repaired.
Complete attention is always
required while driving, and you
should be ready to take action and
apply the brakes and/or steer the
vehicle to avoid crashes.
Audible or Safety Alert Seat
Some driver assistance features alert
the driver of obstacles by beeping. To
change the volume of the warning
chime, see “Comfort and Convenience ”
under Vehicle Personalization 0120. If equipped with the Safety Alert Seat,
the driver seat cushion may provide a
vibrating pulse alert instead of
beeping. To change this, see
“Collision/Detection Systems”
under
Vehicle Personalization 0120.
Cleaning
Depending on vehicle options, keep
these areas of the vehicle clean to
ensure the best driver assistance
feature performance. Driver
Information Center (DIC) messages
may display when the systems are
unavailable or blocked.
.Front and rear bumpers and the
area below the bumpers
.Front grille and headlamps
.Front camera lens in the front grille
or near the front emblem
.Front side and rear side panels
.Outside of the windshield in front of
the rearview mirror
.Side camera lens on the bottom of
the outside mirrors
.Rear side corner bumpers
.Rear Vision Camera above the
license plate

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.