2021 BUICK ENVISION cruise control

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
236 Driving and Operating
Detecting the Pedestrian Ahead
FPB alerts and automatic braking will not
occur unless the FPB system detects a
pedestrian. When a nearby pedestrian is
detected in front of the vehicle, the
pedestrian ahead indicator will display
amber.
Front Pedestrian Alert
With Head-Up Display
Without Head-Up Display
When the vehicle approaches a pedestrian
ahead too rapidly, the red FPB alert display
will flash on the windshield. Eight rapid
high-pitched beeps will sound from the
front, or both sides of the Safety Alert Seat
will pulse five times. When this Pedestrian
Alert occurs, the brake system may prepare
for driver braking to occur more rapidly
which can cause a brief, mild deceleration.
Continue to apply the brake pedal as
needed. Cruise control may be disengaged
when the Front Pedestrian Alert occurs.
Automatic Braking
If FPB detects it is about to crash into a
pedestrian directly ahead, and the brakes
have not been applied, FPB may
automatically brake moderately or brake
hard. This can help to avoid some very low
speed pedestrian crashes or reduce
pedestrian injury. FPB can automatically
brake to detected pedestrians between 8 km/h (5 mph) and 80 km/h (50 mph).
Automatic braking levels may be reduced
under certain conditions, such as higher
speeds.
If this happens, Automatic Braking may
engage the Electric Parking Brake (EPB) to
hold the vehicle at a stop. Release the EPB.
A firm press of the accelerator pedal will
also release Automatic Braking and the EPB.
{Warning
FPB may alert or automatically brake the
vehicle suddenly in situations where it is
unexpected and undesired. It could falsely
alert or brake for objects similar in shape
or size to pedestrians, including shadows.
This is normal operation and the vehicle
does not need service. To override
Automatic Braking, firmly press the
accelerator pedal, if it is safe to do so.
Automatic Braking can be disabled through
vehicle personalization. See “Front Pedestrian
Detection” in“Collision/Detection Systems”
under Vehicle Personalization 0109.

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
348 Index
IndexA
About Driving the Vehicle . . . . . . . . . . . . . . . . . .2
Accessories and Modifications . . . . . . . . . . . 254
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . 201
Adaptive Cruise Control . . . . . . . . . . . . . . . . . . .214
Adaptive Forward Lighting (AFL) . . . . . . . . . . 121
Add-On Electrical Equipment . . . . . . . . . . . . . . 251
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Additional Maintenance and Care . . . . . . . . 319
Adjustments
Lumbar, Front Seats . . . . . . . . . . . . . . . . . . . . 34
Agreements Trademarks and License . . . . . . . . . . . . . . . 169
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . 261
Air Conditioning . . . . . . . . . . . . . . . . . . . . . 178, 180
Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Air Filter, Passenger Compartment . . . . . . . 184
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
How Does an Airbag Restrain? . . . . . . . . . . 52
Passenger Sensing System . . . . . . . . . . . . . . 53
What Makes an Airbag Inflate? . . . . . . . . . 52
What Will You See after an AirbagInflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
When Should an Airbag Inflate? . . . . . . . . . 51 Airbag System (cont'd)
Where Are the Airbags? . . . . . . . . . . . . . . . . 50
Airbags Adding Equipment to the Vehicle . . . . . . . 57
Passenger Status Indicator . . . . . . . . . . . . . . 94
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . 94
Servicing Airbag-Equipped Vehicles . . . . . . 57
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 23
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Rear Pedestrian . . . . . . . . . . . . . . . . . . . . . . . . 230
Side Blind Zone (SBZA) . . . . . . . . . . . . . . . . . 237
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 279
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . 207, 269 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Antilock Brake System (ABS) . . . . . . . . . . . . . 207
Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Apple CarPlay and Android Auto . . . . . . . . . .158
Assistance Program, Roadside . . . . . . . . . . . . . 331
Assistance Systems for Driving . . . . . . . . . . . 231

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
350 Index
Climate Control Systems (cont'd)Dual Automatic . . . . . . . . . . . . . . . . . . . . . . . . 180
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . 89
Collision Damage Repair . . . . . . . . . . . . . . . . . 334
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . . . 301
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Connections Connected Services . . . . . . . . . . . . . . . . . . . . 346
Control
Hill Descent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Traction and Electronic Stability . . . . . . . 210
Control Light Hill Descent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . . 189
Controls
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 127
Convenience Net . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Coolant Engine Temperature Gauge . . . . . . . . . . . . . 93
Engine Temperature Warning Light . . . . 100
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178, 180 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Courtesy Transportation Program . . . . . . . . 333
Cover
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Coverage Explanations . . . . . . . . . . . . . . . . . . . 148
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Cruise Control, Adaptive . . . . . . . . . . . . . . . . . .214
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Customer Assistance . . . . . . . . . . . . . . . . . . . . . 330 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Text Telephone (TTY) Users . . . . . . . . . . . . 330
Customer Information Publications Ordering Information . . . . . 336
Customer Satisfaction Procedure . . . . . . . . . 328
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
D
Damage Repair, Collision . . . . . . . . . . . . . . . . . 334
Danger, Warning, and Caution . . . . . . . . . . . . . .2
Data Collection
Infotainment System . . . . . . . . . . . . . . . . . . 339
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Data Recorders, Event . . . . . . . . . . . . . . . . . . . 338
Database Coverage Explanations . . . . . . . . . 148
Daytime Running Lamps (DRL) . . . . . . . . . . . 120
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . . . 188 Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142
Diagnostics
Connected Services . . . . . . . . . . . . . . . . . . . . 347
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . . . 188
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 15
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Drive Belt Routing, Engine . . . . . . . . . . . . . . . 327
Drive Systems All-Wheel Drive . . . . . . . . . . . . . . . . . . . 207, 269
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Driver Assistance Systems . . . . . . . . . . . . . . . 222
Driver Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . .187
Driver Information Center (DIC) . . . . . . . . . . 103
Driver Mode Control . . . . . . . . . . . . . . . . . . . . . . 212
Driver Mode Control Light . . . . . . . . . . . . . . . 100
Driving Assistance Systems . . . . . . . . . . . . . . . . . . . . 231
Better Fuel Economy . . . . . . . . . . . . . . . . . . . 187
Characteristics and Towing Tips . . . . . . . . 243
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Hill and Mountain Roads . . . . . . . . . . . . . . . 191

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
Index 353
LampsCourtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Daytime Running (DRL) . . . . . . . . . . . . . . . . 120
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Exterior Controls . . . . . . . . . . . . . . . . . . . . . . . . 117
Exterior Lamps Off Reminder . . . . . . . . . . 120
Exterior Lighting Battery Saver . . . . . . . . 124
Malfunction Indicator (Check
Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
On Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Lane Change Alert (LCA) . . . . . . . . . . . . . . . . . 237
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . . . . 238
Lane Keep Assist Light . . . . . . . . . . . . . . . . . . . . 98
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . . 44
LATCH System Replacing Parts after a Crash . . . . . . . . . . . 70
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Lighting Adaptive Forward . . . . . . . . . . . . . . . . . . . . . . . 121
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Illumination Control . . . . . . . . . . . . . . . . . . . 122
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272 Lights
Airbag Readiness . . . . . . . . . . . . . . . . . . . . . . . 94
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . . 98
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Brake System Warning . . . . . . . . . . . . . . . . . 96
Charging System . . . . . . . . . . . . . . . . . . . . . . . 95
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 102
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Driver Mode Control . . . . . . . . . . . . . . . . . . . 100
Electric Parking Brake . . . . . . . . . . . . . . . . . . . 97
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . 101
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
High-Beam On . . . . . . . . . . . . . . . . . . . . . . . . . 102
High/Low Beam Changer . . . . . . . . . . . . . . 120
Hill Descent Control . . . . . . . . . . . . . . . . . . . . 98
Lane Keep Assist . . . . . . . . . . . . . . . . . . . . . . . . 98
Low Fuel Warning . . . . . . . . . . . . . . . . . . . . . 101
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . . 93
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Service Electric Parking Brake . . . . . . . . . . . 97
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Lights (cont'd)
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . . . . . . . . . . . . 100
Traction Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 15
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . . 15
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Low Fuel Warning Light . . . . . . . . . . . . . . . . . .101
Lower Anchors and Tethers for
Children (LATCH System) . . . . . . . . . . . . . . . . 65
Lumbar Adjustment . . . . . . . . . . . . . . . . . . . . . . . 34
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Maintenance Schedule . . . . . . . . . . . . . . . . . . . .314 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Malfunction Indicator Lamp . . . . . . . . . . . . . . . 95
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 206