Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
DRIVING AND OPERATING 265
signal is activated in the same
direction as a detected vehicle, this
display will flash as an extra warning
not to change lanes.
LCA can be disabled through vehicle
personalization. When you disable
LCA, SBZA is also disabled. SeeVehicle
Personalization 0120. If LCA is
disabled by the driver, the LCA mirror
displays will not light up.
When the System Does Not
Seem to Work Properly
The LCA system requires some driving
for the system to calibrate to
maximum performance. This
calibration may occur more quickly if
the vehicle is driving on a straight
highway road with traffic and roadside
objects (e.g., guardrails, barriers).
LCA displays may not come on when
passing a vehicle quickly, for a
stopped vehicle, or when towing a
trailer. The LCA detection zones that
extend back from the side of the
vehicle do not move further back
when a trailer is towed. Use caution
while changing lanes when towing a
trailer. LCA may alert to objects attached to the vehicle, such as a
trailer, bicycle, or object extending out
to either side of the vehicle. Attached
objects may also interfere with the
detection of vehicles. This is normal
system operation; the vehicle does not
need service.
LCA may not always alert the driver to
vehicles in the next lane over,
especially in wet conditions or when
driving on sharp curves. The system
does not need to be serviced. The
system may light up due to guardrails,
signs, trees, shrubs, and other
non-moving objects. This is normal
system operation; the vehicle does not
need service.
LCA may not operate when the LCA
sensors in the left or right corners of
the rear bumper are covered with
mud, dirt, snow, ice, or slush, or in
heavy rainstorms. For cleaning
instructions, see "Washing the
Vehicle" under
Exterior Care0348.
If the DIC still displays the system
unavailable message after cleaning
both sides of the vehicle toward the
rear corners of the vehicle, see your
dealer. If the LCA displays do not light up
when moving vehicles are in the side
blind zone or are rapidly approaching
this zone and the system is clean, the
system may need service. Take the
vehicle to your dealer.
Radio Frequency Information
See
Radio Frequency Statement 0383.
Lane Keep Assist (LKA)
If equipped, LKA may help avoid
crashes due to unintentional lane
departures. This system uses a camera
to detect lane markings between
60 km/h (37 mph) and 180 km/h
(112 mph). It may assist by gently
turning the steering wheel if the
vehicle approaches a detected lane
marking. It may also provide a Lane
Departure Warning (LDW) alert if the
vehicle crosses a detected lane
marking. LKA can be overridden by
turning the steering wheel. This
system is not intended to keep the
vehicle centered in the lane. LKA will
not assist and alert if the turn signal
is active in the direction of lane
Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
402 INDEX
Online Owner Center . . . . . . . . . . . . . . . 377
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
OnStar Additional Information . . . . 388
OnStar Emergency . . . . . . . . . . . . . . . . . . 388
OnStar Overview . . . . . . . . . . . . . . . . . . . . 387
OnStar Security . . . . . . . . . . . . . . . . . . . . . 388
OnStar System . . . . . . . . . . . . . . . . .150, 162
OutletsPower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Overheating, Engine . . . . . . . . . . . . . . . . 294
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Instrument Panel . . . . . . . . . . . . . . . . . . . . 4
P
ParkShifting Into . . . . . . . . . . . . . . . . . . . . . . 224
Shifting Out of . . . . . . . . . . . . . . . . . . . . 224
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Parking Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 298
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Over Things That Burn . . . . . . . . . . . 225
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 250
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Passenger Sensing System . . . . . . . . . . 60
Pedestrian Ahead Indicator . . . . . . . . 110
Perchlorate Materials Requirements, California . . . . . . . . . 282
Performance Shifting Light . . . . . . . . 109
Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Phone Apple CarPlay and
Android Auto . . . . . . . . . . . . . . . . . . . . 175
Bluetooth . . . . . . . . . . . . . . . . . . . . 170, 171
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Positioning
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Protection, Battery . . . . . . . . . . . . . . . . 135
Retained Accessory (RAP) . . . . . . . . 224
Seat Adjustment . . . . . . . . . . . . . . . . . . . 38
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Pregnancy, Using Seat Belts . . . . . . . . . 52
Privacy Vehicle Data Recording . . . . . . . . . . 385 Problems with Route Guidance . . . . 163
Program
Courtesy Transportation . . . . . . . . . 380
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . 268
Proposition 65 Warning,
California . . . . . . . . . . . . . . .282, 297, 342, Back Cover
Publication Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . 383
R
RadioHD Radio Technology . . . . . . . . . . . . 144
Radio Data System (RDS) . . . . . . . . . . 145
Radio Frequency Statement . . . . . . . . 383
Radio Reception . . . . . . . . . . . . . . . . . . . . 146
Radios AM-FM Radio . . . . . . . . . . . . . . . . . . . . . 142
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Reading Lamps . . . . . . . . . . . . . . . . . . . . . 134
Rear Camera Mirror . . . . . . . . . . . . . . . . . 30
Rear Pedestrian Alert . . . . . . . . . . . . . . . 256
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Rear Storage . . . . . . . . . . . . . . . . . . . . . . . . . 85
Rear Vision Camera (RVC) . . . . . . . . . 250
Rear Window Washer/Wiper . . . . . . . . 94
Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
INDEX 405
Tires (cont'd)Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 322
Pressure . . . . . . . . . . . . . . . . . . . . . 316, 317
Pressure Light . . . . . . . . . . . . . . . . . . . . . 111
Pressure Monitor Operation . . . . . . 319
Pressure Monitor System . . . . . . . . 318
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Sealant and Compressor Kit . . . . . 331
Sealant and Compressor Kit,
Storing . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Sidewall Labeling . . . . . . . . . . . . . . . . . 310
Terminology and Definitions . . . . 313
Uniform Tire Quality Grading . . . . 326
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Wheel Replacement . . . . . . . . . . . . . . 328
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . 267
Towing Driving Characteristics . . . . . . . . . . . 271
Equipment . . . . . . . . . . . . . . . . . . . . . . . . 277
General Information . . . . . . . . . . . . . . 270
Recreational Vehicle . . . . . . . . . . . . . . 345
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Trailer Sway Control (TSC) . . . . . . . 279
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345 Traction
Control System
(TCS)/StabiliTrak Light . . . . . . . . . 110
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . . . 235
Trademarks and License
Agreements . . . . . . . . . . . . . . . . . . . . . . . . 187
Trailer Sway Control (TSC) . . . . . . . . . . . . . . . 279
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 226
Fluid, Automatic . . . . . . . . . . . . . . . . . . 289
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . 101
Turn and Lane-Change Signals . . . . 132
U
Umbrella Storage . . . . . . . . . . . . . . . . . . . . 87
Uniform Tire Quality Grading . . . . . . 326
Universal Remote System . . . . . . . . . . 125 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Programming . . . . . . . . . . . . . . . . . . . . . . 125
Updates
Map Data . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 USB Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Using the Navigation System . . . . . . 151
Using the System . . . . . . . . . . . . . . . . . . . 139
Using This Manual . . . . . . . . . . . . . . . . . . . . 2
V
Vehicle
Alarm System . . . . . . . . . . . . . . . . . . . . . . 25
Canadian Owners . . . . . . . . . . . . . . . . . . . . 1
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Identification Number (VIN) . . . . . 370
Load Limits . . . . . . . . . . . . . . . . . . . . . . . 215
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Personalization . . . . . . . . . . . . . . . . . . . 120
Remote Start . . . . . . . . . . . . . . . . . . . . . . . 14
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Speed Messages . . . . . . . . . . . . . . . . . . . 120
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Vehicle Ahead Indicator . . . . . . . . . . . . 109
Vehicle Care Storing the Tire Sealant andCompressor Kit . . . . . . . . . . . . . . . . . . 336
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 316
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385
Vehicle Positioning . . . . . . . . . . . . . . . . . 163
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . 201