side mirrors BUICK ENVISION 2021 User Guide

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
Driving and Operating 237
{Warning
Using the Front Pedestrian Braking
system while towing a trailer could cause
you to lose control of the vehicle and
crash. Turn the system to Alert or Off
when towing a trailer.
Cleaning the System
If FPB does not seem to operate properly,
cleaning the outside of the windshield in
front of the rearview mirror may correct the
issue.
Side Blind Zone Alert (SBZA)
If equipped, the SBZA system is a
lane-changing aid that assists drivers with
avoiding crashes that occur with moving
vehicles in the side blind zone, or blind spot
areas. 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 that
blind zone. If the turn signal is activated and
a vehicle is also detected on the same side,
the display will flash as an extra warning
not to change lanes. Since this system is
part of the Lane Change Alert (LCA) system,
read the entire LCA section before using this
feature.
Lane Change Alert (LCA)
If equipped, the LCA system is a
lane-changing aid that assists drivers with
avoiding lane change crashes 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

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
238 Driving and Operating
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 MirrorDisplayRight 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 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. See
Vehicle Personalization
0 109. 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 Care0305. 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.
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

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
244 Driving and Operating
When towing a trailer:
.Become familiar with and follow all state
and local laws that apply to trailer
towing. These requirements vary from
state to state.
.State laws may require the use of
extended side view mirrors. Even if not
required, you should install extended side
view mirrors if your visibility is limited or
restricted while towing.
.Do not tow a trailer during the first
800 km (500 mi) of vehicle use to prevent
damage to the engine, axle, or other
parts.
.It is recommended to perform the first oil
change before heavy towing.
.During the first 800 km (500 mi) of trailer
towing, do not drive over 80 km/h
(50 mph) and do not make starts at full
throttle.
.Vehicles can tow in D (Drive). If the
transmission downshifts too often, a
lower gear may be selected using Manual
Mode SeeManual Mode 0206.
If equipped, the following driver assistance
features should be turned off when towing
a trailer:
.Adaptive Cruise Control (ACC)
.Super Cruise Control
.Lane Keep Assist (LKA)
.Park Assist
.Automatic Parking Assist (APA)
.Reverse Automatic Braking (RAB)
If equipped, the following driver assistance
features should be turned to alert or off
when towing a trailer:
.Automatic Emergency Braking (AEB)
.Intelligent Brake Assist (IBA)
.Front Pedestrian Braking (FPB)
If equipped with Lane Change Alert (LCA),
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.
If equipped with Rear Cross Traffic Alert
(RCTA), use caution while backing up when
towing a trailer, as the RCTA detection zones
that extend out from the back of the vehicle
do not move further back when a trailer is
towed.
{Warning
To prevent serious injury or death from
carbon monoxide (CO), when towing a
trailer:
.Do not drive with the liftgate, trunk/
hatch, or rear-most window open.
.Fully open the air outlets on or under
the instrument panel.
.Adjust the climate control system to a
setting that brings in only outside air.
See “Climate Control Systems” in the
Index.
For more information about carbon
monoxide, see Engine Exhaust 0203.
Towing a trailer requires experience. The
combination of the vehicle and trailer is
longer and not as responsive as the vehicle
itself. Get used to the handling and braking
of the combination by driving on a level
road surface before driving on public roads.
The trailer structure, the tires, and the
brakes must be all be rated to carry the
intended cargo. Inadequate trailer
equipment can cause the combination to
operate in an unexpected or unsafe manner.
Before driving, inspect all trailer hitch parts

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
352 Index
Fuel (cont'd)Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Fuses Engine Compartment Fuse Block . . . . . . . 273
Fuses and Circuit Breakers . . . . . . . . . . . . . 273
Instrument Panel Fuse Block . . . . . . . . . . . 276
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . . 113Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Gauges Engine Coolant Temperature . . . . . . . . . . . . 93
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Warning Lights and Indicators . . . . . . . . . . 89
General Information Service and Maintenance . . . . . . . . . . . . . . 313
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Global Positioning System (GPS) . . . . . . . . . .147
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
GM Mobility Reimbursement Program . . . . 331
Guidance Problems with the Route . . . . . . . . . . . . . . 147
H
Hazard Warning Flashers . . . . . . . . . . . . . . . . . 121
HD Radio Technology . . . . . . . . . . . . . . . . . . . . . 132
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Head-up Display . . . . . . . . . . . . . . . . . . . . . . . . . 105
HeadlampsAdaptive Forward Lighting (AFL) . . . . . . . . 121
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 272
Daytime Running Lamps (DRL) . . . . . . . . . 120
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
High-Beam On Light . . . . . . . . . . . . . . . . . . . 102
High/Low Beam Changer . . . . . . . . . . . . . . 120
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 102
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 82
Heated and Ventilated Front Seats . . . . . . . 39
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 180
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . 102
High-Speed Operation . . . . . . . . . . . . . . . . . . . 285
Hill and Mountain Roads . . . . . . . . . . . . . . . . . 191
Hill Descent Control (HDC) . . . . . . . . . . . . . . . . 211
Hill Descent Control Light . . . . . . . . . . . . . . . . . 98
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . 209 Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
How to Wear Seat Belts Properly . . . . . . . . . 43
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 180
I
If the System Needs Service . . . . . . . . . . . . . 148
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . 197
Indicator
Pedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . . 99
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Infants and Young Children, Restraints . . . . 60
Information
Publication Ordering . . . . . . . . . . . . . . . . . . . 336
Infotainment System . . . . . . . . . . . . . . . . . . . . 339
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . . . . 89
Instrument Panel Overview . . . . . . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . . . . . . . 26
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1, 125
J
Jump Starting - North America . . . . . . . . . . . 302
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . . . . . . 7
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . . . . . . . 280

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
Index 355
PortUSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Protection, Battery . . . . . . . . . . . . . . . . . . . . . 124
Retained Accessory (RAP) . . . . . . . . . . . . . . 201
Seat Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 34
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . 47
Privacy Vehicle Data Recording . . . . . . . . . . . . . . . . 337
Problems with Route Guidance . . . . . . . . . . .147
Program
Courtesy Transportation . . . . . . . . . . . . . . . 333
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . . . .241
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . 254, 268, 302,
Back Cover
Publication Ordering Information . . . . . . . . 336
R
Radio HD Radio Technology . . . . . . . . . . . . . . . . . . 132
Radio Data System (RDS) . . . . . . . . . . . . . . . . . 132 Radio Frequency Statement . . . . . . . . . . . . . . 336
Radio Reception . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Radios
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . . . . 26
Rear Pedestrian Alert . . . . . . . . . . . . . . . . . . . . 230
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Rear Vision Camera (RVC) . . . . . . . . . . . . . . . . 223
Rear Window Washer/Wiper . . . . . . . . . . . . . 84
Rearview Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 26 Automatic Dimming . . . . . . . . . . . . . . . . . . . . 26
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . .35
Recognition Voice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Recommended Fluids and Lubricants . . . . . 322
Records Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Recreational Vehicle Towing . . . . . . . . . . . . . 304
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Remote Keyless Entry (RKE) System . . . . . . . .7
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . . . . 12
Replacement Parts
Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Replacement Parts (cont'd)
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Replacing Airbag System . . . . . . . . . . . . . . . . . . 58
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Reporting Safety Defects Canadian Government . . . . . . . . . . . . . . . . . 337
General Motors . . . . . . . . . . . . . . . . . . . . . . . . 337
U.S. Government . . . . . . . . . . . . . . . . . . . . . . . 336
Restraints
Where to Put . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Retained Accessory Power (RAP) . . . . . . . . . 201
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . . . .25
Roads Driving, Wet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Roadside Assistance Program . . . . . . . . . . . . . 331
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Roof Rack System . . . . . . . . . . . . . . . . . . . . . . . . . 79
Rotation, Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
Routing, Engine Drive Belt . . . . . . . . . . . . . . . 327
Running the Vehicle While Parked . . . . . . . 203S
Safety Defects Reporting
Canadian Government . . . . . . . . . . . . . . . . . 337