2020 CADILLAC XT6 Lighting

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
148 LIGHTING
If the vehicle is started in a dark
garage, the automatic headlamp
system comes on immediately. If it is
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
0149.
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
|: Touch|on the center stack to
make the front and rear turn signal
lamps flash on and off. Touch 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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
LIGHTING 149
The turn and lane-change signal can
be turned off manually by moving the
lever back to its original position.
If after signaling a turn or lane
change, the arrow flashes rapidly or
does not come on, a signal bulb may
be burned out.
Cornering Lamps
Cornering lamps 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 turned
50 degrees in either directon.
. The vehicle speed is below
40 km/h (25 mph).
Interior Lighting
Instrument Panel
Illumination Control
The brightness of the instrument
panel lighting and steering wheel
controls can be adjusted.
D:Move the thumbwheel up or
down to brighten or dim the lights.
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 unless the dome
lamp override is activated. 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 XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
150 LIGHTING
To operate, press the following
buttons:
jOFF :Press to turn off the dome
lamps when a door is open. An
indicator light on the button will
turn on when the dome lamp override
is activated. Press
jOFF again to
deactivate this feature and the
indicator light will turn off. The dome
lamps will come on when doors are
opened.
+ ON/OFF : Press to turn the dome
lamps on manually.
Reading Lamps
There are front and rear reading
lamps on the overhead console, over
the rear passenger doors and over the
third row passenger windows. These
lamps come on automatically when
any door is opened.
To manually turn the reading lamps
on or off:
Press the lamp lenses on the front
reading lamps.
Press the lamp lenses over the rear
passenger doors.
Press the lamp lenses over the third
row passenger windows.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
LIGHTING 151
Lighting Features
Entry Lighting
Some exterior lamps and most of the
interior lights turn on briefly at night,
or in areas of limited lighting when
K
is pressed on the Remote Keyless
Entry (RKE) transmitter. SeeRemote
Keyless Entry (RKE) System Operation
0 8. When the driver door is opened,
all control lights, Driver Information
Center (DIC) lights, and door pocket
lights turn on. After about 30 seconds
the exterior lamps turn off, then the
remaining interior lights dim to off.
Entry lighting can be disabled
manually by turning the ignition on or
to ACC/ACCESSORY, or by pressing
Q
on the RKE transmitter.
This feature can be changed. See
“Vehicle Locator Lights” underVehicle
Personalization 0135.
Exit Lighting
Some exterior lamps and interior
lights come on at night, or in areas
with limited lighting, when the driver
door is opened after the ignition is
turned off. The dome lamp comes on
after the ignition is turned off. The
exterior lamps and dome lamp remain
on for a set amount of time, then
automatically turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
This feature can be changed. See
Vehicle Personalization 0135.
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 XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
DRIVING AND OPERATING 215
Conditions that are associated with
low visibility, such as fog, rain, snow,
or road spray, may limit ACC
performance. Water droplets from rain
or snow that remain on the
windshield may also limit ACC’s
ability to detect objects.
Lighting Conditions Affecting ACC
The ACC front camera can be affected
by poor lighting conditions, and ACC
may have limited performance when:
.There are changes in brightness,
such as entering and exiting
tunnels, bridges, and overpasses.
. Low sun angles cause the camera
to not detect objects, or it is more
difficult to detect objects in the
same traffic lane.
. Lighting is poor in the evening or
early morning .
There are multiple changes in
brightness or shadows along the
vehicle roadway.
. In a tunnel without the headlamps
on, or in a tunnel when there is a
vehicle in front that does not have
its taillamps on.
. Subjected to strong light from
opposing lane traffic in the front
of the vehicle, such as high-beam
headlamps from oncoming traffic.
Accessory Installations and Vehicle
Modifications
Do not install or place any object
around the front camera windshield
area that would obstruct the front
camera view.
Do not install objects on top of the
vehicle that overhang and obstruct the
front camera, such as a canoe, kayak,
or other items that can be transported
on the vehicle roof.
Do not modify the hood, headlamps,
or fog lamps, as this may limit the
camera’s ability to detect an object. Cleaning the Sensing System
The camera sensor on the windshield
behind the rearview mirror can
become blocked by snow, ice, dirt,
mud, or debris. This area needs to be
cleaned for ACC to operate properly.
The vehicle headlamps may need to
be cleaned due to dirt, snow, or ice.
Objects that are not illuminated
correctly may be difficult to detect.
If ACC will not operate, regular cruise
control may be available. See
“Switching Between ACC and Regular
Cruise Control
”previously in this
section. Always consider driving
conditions before using either cruise
control system.
For cleaning instructions, see
“Washing the Vehicle ”under Exterior
Care 0324.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
238 DRIVING AND OPERATING
{Warning
Using LKA while towing a trailer or
on slippery roads could cause loss
of control of the vehicle and a
crash. Turn the system off.
How the System Works
LKA uses a camera sensor installed on
the windshield ahead of the rearview
mirror to detect lane markings. It may
provide brief steering assist if it
detects an unintended lane departure.
It may further provide an audible alert
or the driver seat may pulse indicating
that a lane marking has been crossed.
To turn LKA on and off, press
A
on the center stack. If equipped, the
indicator light on the button comes
on when LKA is on and turns off
when LKA is disabled.
When on,
Ais white, if equipped,
indicating that the system is not ready
to assist.
Ais green if LKA is ready
to assist. LKA may assist by gently
turning the steering wheel if the vehicle approaches a detected lane
marking.
Ais amber when
assisting. It may also provide a Lane
Departure Warning (LDW) alert by
flashing
Aamber if the vehicle
crosses a detected lane marking.
Additionally, there may be three
beeps, or the driver seat may pulse
three times, on the right or left,
depending on the lane departure
direction.
Take Steering
The LKA system does not
continuously steer the vehicle. If LKA
does not detect active driver steering,
an alert and chime may be provided.
Steer the vehicle to dismiss. LKA may
become temporarily unavailable after
repeated take steering alerts.
When the System Does Not
Seem to Work Properly
The system performance may be
affected by:
. Close vehicles ahead.
. Sudden lighting changes, such as
when driving through tunnels. .
Banked roads.
. Roads with poor lane markings,
such as two-lane roads.
A system unavailable message may
display if the camera is blocked. The
LKA system does not need service.
A camera blocked message may
display if the camera is blocked. Some
driver assistance systems may have
reduced performance or not work at
all. An LKA or LDW unavailable
message may display if the systems
are temporarily unavailable. This
message could be due to a blocked
camera. The LKA system does not
need service. Clean the outside of the
windshield behind the rearview mirror.
LKA assistance and/or LDW alerts
may occur due to tar marks, shadows,
cracks in the road, temporary or
construction lane markings, or other
road imperfections. This is normal
system operation; the vehicle does not
need service. Turn LKA off if these
conditions continue.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
258 VEHICLE CARE
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 259
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 259
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . 260
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 260
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 260
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 263
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 264
Engine Oil Life System . . . . . . . . . . . 266
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Engine Air Filter Life System . . . . 267
Engine Air Cleaner/Filter . . . . . . . . . 268
Cooling System . . . . . . . . . . . . . . . . . . . 269
Engine Overheating . . . . . . . . . . . . . . 272
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 273
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274 Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 275
Battery - North America . . . . . . . . . 276
Starter Switch Check . . . . . . . . . . . . . 276
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 277
Wiper Blade Replacement . . . . . . . 277
Windshield Replacement . . . . . . . . 278
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 279
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 280
Bulb Replacement
LED Lighting . . . . . . . . . . . . . . . . . . . . . 280
Electrical System
Electrical System Overload . . . . . . 281
Fuses and Circuit Breakers . . . . . . 281
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Instrument Panel Fuse Block . . . . 285
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
All-Season Tires . . . . . . . . . . . . . . . . . . 290
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 290
Summer Tires . . . . . . . . . . . . . . . . . . . . 291 Tire Sidewall Labeling . . . . . . . . . . . 291
Tire Designations . . . . . . . . . . . . . . . . . 293
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . . . . . . 294
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 296
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . 298
Tire Pressure Monitor System . . . 298
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 299
Tire Inspection . . . . . . . . . . . . . . . . . . . 303
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 303
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Buying New Tires . . . . . . . . . . . . . . . . 305
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Uniform Tire Quality Grading . . . 307
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Wheel Replacement . . . . . . . . . . . . . . 308
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 309
If a Tire Goes Flat . . . . . . . . . . . . . . . . 310
Tire Changing . . . . . . . . . . . . . . . . . . . . . 311
Compact Spare Tire . . . . . . . . . . . . . . 317

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
280 VEHICLE CARE
Trunk
Liftgate
Headlamp Aiming
Headlamp aim has been preset and
should need no further adjustment.
If the vehicle is damaged in a crash,
the headlamp aim may be affected.
If adjustment to the headlamps is
necessary, see your dealer.
Bulb Replacement
LED Lighting
This vehicle has all LED lamps. For
replacement of any LED lighting
assembly, contact your dealer.