lighting BUICK ENVISION 2021 User Guide

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
122 Lighting
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.
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. See
Fuses
and Circuit Breakers 0273.
Interior Lighting
Instrument Panel Illumination
Control
This feature adjusts the brightness of all
illuminated controls. The instrument panel
illumination control is next to the exterior
lamp control.
Push the knob in all the way until it extends
out and then turn the knob clockwise or
counterclockwise to brighten or dim the
lights. Push the knob back in when finished.
The knob is functional at night, or when
headlamps or the parking lamps are ON.
Courtesy Lamps
The courtesy lamps come on when any door
is opened,
Kon the remote key is pressed,
or when the ignition is switched off. See
Dome Lamps 0122.
Dome Lamps
The dome lamp controls are in the overhead
console.
To operate, press the following buttons:
jOFF : Press to turn off the dome
lamps when any door is opened,
Kon the
remote key is pressed, or when the ignition
is switched off. An indicator light on the
button will turn on when the dome lamp

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
Lighting 123
override is activated. PressjOFF again
to deactivate this feature and the indicator
light will turn off. The dome lamps will
come on when any door is opened,
Kon
the remote key is pressed, or when the
ignition is switched off.
+ON/OFF : Press to turn the dome lamps
on manually. Press again to turn the dome
lamps off.
Reading Lamps
There are reading lamps on the overhead
console and in the rear center of the roof.
For vehicles equipped with a sunroof, the
reading lamps are on the overhead console
and over the rear passenger doors. These
lamps come on when any door is opened,
Kon the remote key is pressed, or when
the ignition is switched off.
To operate, the ignition must be on, or in
ACC/ACCESSORY, or using Retained Accessory
Power (RAP).
Front Reading Lamps
The front reading lamps are in the overhead
console. Press the lamp lenses to turn the
front reading lamps on and off.
Rear Reading Lamps without Sunroof
If equipped, press the lamp lens to turn the
rear passenger reading lamps on or off.
Rear Reading Lamps with Sunroof
If equipped, press the lamp lens to turn the
rear passenger reading lamps on or off.
Lighting Features
Entry Lighting
Some exterior lamps turn on briefly at
night, or in areas with limited lighting,
when
Kis pressed on the remote key. After
about 30 seconds the exterior lamps turn
off. When any door is opened, or the
remote unlock is pressed, or the vehicle is
OFF, all interior lights turn on and then the
dome and remaining interior lamps dim to
off after 20 seconds when all doors are
closed. Entry lighting can be disabled
manually by turning the ignition to on or
ACC/ACCESSORY, or by pressing
Qon the

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14583509) - 2021 - CRC - 1/8/21
124 Lighting
remote key. The entry lighting feature for
exterior lighting can be changed by vehicle
locator lights. SeeVehicle Personalization
0 109.
Exit Lighting
Some exterior lamps 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 when any
door is opened or the ignition is turned OFF.
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. See Vehicle Personalization 0109.
Battery Load Management
The vehicle has Electric Power Management
(EPM), which estimates the battery's
temperature and state of charge. It then
adjusts the voltage for best performance
and extended life of the battery.
When the battery's state of charge is low,
the voltage is raised slightly to quickly bring
the charge back up. When the state of charge is high, the voltage is lowered
slightly to prevent overcharging. The
voltmeter gauge or the voltage display on
the Driver Information Center (DIC),
if equipped, may show the voltage moving
up or down. This is normal. If there is a
problem, an alert will be displayed.
The battery can be discharged at idle if the
electrical loads are very high. This is true for
all vehicles. This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all the power that
is needed for very high electrical loads.
A high electrical load occurs when several of
the following are on, such as: headlamps,
high beams, fog lamps, rear window
defogger, climate control fan at high speed,
heated seats, engine cooling fans, trailer
loads, and loads plugged into accessory
power outlets.
EPM works to prevent excessive discharge of
the battery. It does this by balancing the
generator's output and the vehicle's
electrical needs. It can increase engine idle
speed to generate more power, whenever
needed. It can temporarily reduce the power
demands of some accessories.
Normally, these actions occur in steps or
levels, without being noticeable. In rare
cases at the highest levels of corrective
action, this action may be noticeable to the
driver. If so, a DIC message might be
displayed and it is recommended that the
driver reduce the electrical loads as much as
possible.
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
Oposition
and then back to the
;or2position.
To keep the lamps on for more than
10 minutes, the ignition must be on or in
ACC/ACCESSORY.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Infotainment System 139
the top of the navigation map view.
Manually close the search bar by touching
z. When the vehicle is moving, the}(Search) icon will replace the search bar to
maximize the full map view.
Destination Card Preferences
From the Nav application, set up Home and
Work addresses to enable one-touch
navigation. To set up Home and Work
addresses, touch
Aand select Settings,
then Map and Navigation Settings, and then
Destination Card Preferences. Show My
Places on Map should be on by default.
Select and enter Home and/or Work address
and save.
If the vehicle’s system is not signed into a
customized profile, the current location icon
uses a generic symbol. Once signed into a customized profile, the current location
symbol will show a customized icon. See
Navigation Symbols
0141.
Map and Navigation Settings
Touch
Awhile in the map view to display
options. The following may display:
.3D Heading Up, 2D Heading Up, 2D North
.Show on Map
.Traffic Events (available with OnStar
Connected Navigation)
.Settings
.Edit Destination (if a route has been set)
.Avoid on Route (if a route has been set)
Touch Settings to view Map and Navigation
Settings. The following may display:
.Destination Card Preferences
.Map Preferences
.Route Preferences
.Navigation Voice Control
.Traffic Preferences
.Alert Preferences
.Fuel Grade Preferences
.Manage History
.Predictive Navigation: See “Predictive
Navigation (If Equipped)” previously in
this section.
.About
To exit a list, touch
zin the top right
corner to return to the main map view.
Make sure to set up preferences before
setting a destination and starting active
guidance.
Map Preferences
Touch to choose between basic map feature
configurations:
Map Colors
.Auto –Touch to automatically change
modes based on lighting conditions.
.Day (Light)
.Night (Dark)
3D Landmark (Default is On) : Touch On or
Off. When turned on, the system will
display all 3D Landmarks on the map
depending on the zoom level.
3D Building (Default is Off) : Touch On or
Off. When turned on, the system will
display all of the possible 3D building shapes
on the map depending on the zoom level.
Show Terrain in 3D (Default is Off) :
If equipped, touch On or Off. When turned
on, the system will display terrain
information on the map in 3D view.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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142 Infotainment System
The destination pin marks the location of
the final destination. Touch the pin to view
the destination address or to add it or
remove it from the Favorites list. Hide the
information by touching the pin one more
time. It will automatically time out if no
action is taken.
If equipped, Smart Points of Interest (POIs)
are places of interest for parking and gas
stations.
The traffic bar provides an overview of the
route progress and any traffic and incidents
along the way. As the route proceeds, the
vehicle icon moves up the bar.Touch the icon to zoom out on the map and
view the entire route. Touch it again to
return to the previous view.
View the drive time by touching the
estimated time of arrival (ETA).
Current Location
When the vehicle is parked and not in a
Navigation session, the user icon is centered
on the map view, highlighting the current
location.
Destination
Receiving Destination Directions from
Different Sources
Destinations can be received or transferred
from different sources to the Nav application
for route guidance.
Some of these sources are:
.Navigation from search results.
.An address from the Contacts list.
Waypoints
Add up to five waypoints, which are
additional destinations, along the route. To
add an additional stop or waypoint:
.From active guidance, touch}.
.Search for the destination using One-Box,
Voice search, or the Quick Category icons.
.Choose search results Along Route,
Nearby, or Near Destination.
.Choose the desired waypoint and touch
Add to Trip or replace the current
destination by touching New Destination.
Route options are not available for
waypoints.
Arriving at a Waypoint
When approaching a waypoint, the system
will display a Destination Arrival view. To
continue on to the next destination touch
the Drive to message on the infotainment
display.
If the vehicle passes the waypoint or gets
out of the current route, the system will
automatically reroute back to this waypoint.
At the same time, it will show a Drive to
icon along with the next waypoint address
so the current waypoint can be skipped and
guidance can resume to the next waypoint
or destination.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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240 Driving and Operating
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.
If the LKA system is not functioning
properly when lane markings are clearly
visible, cleaning the windshield may help. 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.
Fuel
Top Tier Fuel
GM recommends the use of TOP TIER
Detergent Gasoline to keep the engine clean,
reduce engine deposits, and maintain
optimal vehicle performance. Look for the
TOP TIER Logo or see www.toptiergas.com
for a list of TOP TIER Detergent Gasoline
marketers and applicable countries.
Recommended Fuel
Use regular unleaded gasoline meeting
ASTM specification D4814 with a posted
octane rating of 87
—(R+M)/2 —or higher.
Do not use gasoline with a posted octane
rating of less than 87, as this may cause
engine knock and will lower fuel economy.
Do not use any fuel labeled E85 or FlexFuel.
Do not use gasoline with ethanol levels
greater than 15% by volume.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 253
Vehicle Care
General Information
General Information . . . . . . . . . . . . . . . . . . . 254
California Proposition 65 Warning . . . . . 254
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 254
Accessories and Modifications . . . . . . . . . 254
Vehicle Checks
Doing Your Own Service Work . . . . . . . . . 255
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Engine Compartment Overview . . . . . . . . 257
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Engine Oil Life System . . . . . . . . . . . . . . . . 260
Automatic Transmission Fluid . . . . . . . . . 260
Engine Air Filter Life System . . . . . . . . . . . 261
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . 261
Cooling System . . . . . . . . . . . . . . . . . . . . . . . 262
Engine Overheating . . . . . . . . . . . . . . . . . . . 265
Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Battery - North America . . . . . . . . . . . . . . . 268
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . 269
Park Brake and P (Park) Mechanism Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Wiper Blade Replacement . . . . . . . . . . . . . 269
Windshield Replacement . . . . . . . . . . . . . . 270
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . 272
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 272
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Electrical System
Electrical System Overload . . . . . . . . . . . . . 272
Fuses and Circuit Breakers . . . . . . . . . . . . . 273
Engine Compartment Fuse Block . . . . . . . 273
Instrument Panel Fuse Block . . . . . . . . . . 276
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . 279
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . 280
Tire Designations . . . . . . . . . . . . . . . . . . . . . . 281
Tire Terminology and Definitions . . . . . . 282
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
Tire Pressure Monitor System . . . . . . . . . 286
Tire Pressure Monitor Operation . . . . . . . 287
Tire Inspection . . . . . . . . . . . . . . . . . . . . . . . . 289
Tire Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . 289
When It Is Time for New Tires . . . . . . . . 290
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . 291
Different Size Tires and Wheels . . . . . . . 292
Uniform Tire Quality Grading . . . . . . . . . 293 Wheel Alignment and Tire Balance . . . . 294
Wheel Replacement . . . . . . . . . . . . . . . . . . . 294
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
If a Tire Goes Flat . . . . . . . . . . . . . . . . . . . . . 295
Tire Changing . . . . . . . . . . . . . . . . . . . . . . . . . 296
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . 301
Jump Starting
Jump Starting - North America . . . . . . . . 302
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . . . . . 304
Recreational Vehicle Towing . . . . . . . . . . . 304
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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272 Vehicle Care
Headlamp Aiming
Front 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
For the proper type of replacement bulbs,
or any bulb changing procedure not listed in
this section, contact your dealer.
Caution
Do not replace incandescent bulbs with
aftermarket LED replacement bulbs. This
can cause damage to the vehicle electrical
system.
LED Lighting
This vehicle has several LED lamps. For
replacement of any LED lighting assembly,
contact your dealer.
Electrical System
Electrical System Overload
The vehicle has fuses and circuit breakers to
protect against an electrical system
overload.
When the electrical load current is too
heavy, the circuit breaker opens and closes,
protecting the circuit until the current load
returns to normal or the problem is fixed.
This greatly reduces the chance of circuit
overload and fire caused by electrical
problems.
Replace a bad fuse with a new one of the
identical size and rating.
If there is a problem on the road and a fuse
needs to be replaced, the same amperage
fuse can be borrowed. Choose some feature
of the vehicle that is not needed to use and
replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause the lamps
to go on and off, or in some cases to
remain off. Have the headlamp wiring
checked right away if the lamps go on and
off or remain off.
Windshield Wipers
If the wiper motor overheats due to heavy
snow or ice, the windshield wipers will stop
until the motor cools and will then restart.
Although the circuit is protected from
electrical overload, overload due to heavy
snow or ice may cause wiper linkage
damage. Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an electrical
problem and not snow or ice, be sure to get
it fixed.

Buick E2UB-N Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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274 Vehicle Care
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
F02 Trailer stop/turn right
F03 Electronic brake control module
F05 Rear defog
F06 –
F07 Trailer stop/turn left Fuses Usage
F08 Overhead console module/ Universal garage door opener/
Rain sensor
F09 Suspension control semi active dampen system module
F10 Adaptive forward lighting/rear drive control module
F11 Direct current to direct current converter 1 Fuses Usage
F12 Power tailgate
F13 –
F14 Canister vent solenoid F15 –
F16 Front wiper F17 Passenger power seat
F18 Motor window lifter left
F19 Motor window lifter right F21 Exterior lighting module 1
F22 Exterior lighting module 3
F23 Exterior lighting module 6
F24 –
F26 Transmission control module direct current converter
F27 Remote function actuator
F28 –
F29 Exterior lighting module 4
F30 Memory seat module driver F32 Headlamp right
F33 Front heated seat

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276 Vehicle Care
Instrument Panel Fuse Block
The instrument panel fuse block is on the
driver side of the instrument panel, between
the steering wheel and the door. To access
the fuses, remove the panel, starting at the
top. Once clips are disengaged, the tabs
along the bottom of the door can be
disengaged from the instrument panel to
remove the door.
To reinstall the door, place the bottom tabs
into the slots, and rotate the door into
position, engaging the clips. The vehicle may
not be equipped with all of the fuses, relays,
and features shown.
Fuses Amps UsageF1 40A Direct current to direct current
converter 2
F2 30A Body control module 4
F3 – –
F4 – –
F5 25A Body control module 2 Fuses Amps Usage
F6 20A Body control module 3
F7 – –
F8 20A Exterior lighting module 5
F9 – –
F10 5A Steering column lock