2018 BUICK ENVISION ECU

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
22 In Brief
SeeAssistance Systems for Parking
or Backing 0210.
Automatic Parking
Assist (APA)
If equipped, the APA system helps
to search for and maneuver the
vehicle into parallel or perpendicular
parking spots using automatic
steering, DIC displays, and beeps.
When the vehicle speed is below
30 km/h (18 mph), press
Oto
enable the system.
See “Automatic Parking Assist
(APA)” underAssistance Systems
for Parking or Backing 0210.
Power Outlets
The vehicle has four 12-volt
accessory power outlets, which can
be used to plug in electrical
equipment, such as a cell phone or
MP3 player.
There are power outlets:
.
On the center floor console.
. Inside the center floor console. .
On the rear of the center floor
console.
. In the rear cargo area.
To use the outlet, remove the cover.
See Power Outlets 0114.
Universal Remote System
If equipped, this system provides a
way to replace up to three remote
control transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices. Read the instructions completely
before attempting to program the
Universal Remote system. Because
of the steps involved, it may be
helpful to have another person
available to assist with programming
the Universal Remote system.
See
Universal Remote System
0 150.
Sunroof
1. Sunroof Switch
2. Sunshade Switch

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Keys, Doors, and Windows 27
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . 28
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . 28
Remote Vehicle Start . . . . . . . . . . 34
Door Locks . . . . . . . . . . . . . . . . . . . . 36
Power Door Locks . . . . . . . . . . . . . 38
Delayed Locking . . . . . . . . . . . . . . . 38
Automatic Door Locks . . . . . . . . . 38
Lockout Protection . . . . . . . . . . . . . 38
Safety Locks . . . . . . . . . . . . . . . . . . . 39
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . 40
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 45
Vehicle Alarm System . . . . . . . . . 45
Immobilizer . . . . . . . . . . . . . . . . . . . . 46
Immobilizer Operation . . . . . . . . . 46
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 47
Power Mirrors . . . . . . . . . . . . . . . . . . 47
Folding Mirrors . . . . . . . . . . . . . . . . . 48
Heated Mirrors . . . . . . . . . . . . . . . . . 48
Automatic Dimming Mirror . . . . . 48
Reverse Tilt Mirrors . . . . . . . . . . . . 48
Interior Mirrors
Interior Rearview Mirrors . . . . . . . 48
Automatic Dimming Rearview Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 48
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 49
Power Windows . . . . . . . . . . . . . . . 49
Sun Visors . . . . . . . . . . . . . . . . . . . . . 51
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 51
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with
a Remote Keyless Entry (RKE)
transmitter is dangerous and
children or others could be
seriously injured or killed. They
could operate the power windows
or other controls or make the
vehicle move. The windows will
function with the RKE transmitter
in the vehicle, and children or
others could be caught in the path
of a closing window. Do not leave
children in a vehicle with an RKE
transmitter.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Keys, Doors, and Windows 37
“Keyless Access Operation”in
Remote Keyless Entry (RKE)
System Operation 028.
Driver Door Key Lock Cylinder
Access (In Case of Dead
Battery)
To access the driver door key lock
cylinder:
1. Insert the key into the slot on the bottom of the cap.
2. Lift the key upward to remove the cap.
3. Insert the key into the cylinder and turn to unlock.
To replace the cap:
1. Position the bottom edge of the cap under the lower edge of
the metal piece (2). The
tabs (3) attach to the metal
piece (2) at the positions (1).3. Rotate the cap upward and
install into place.
4. Check that the cap is secure.
Free-Turning Locks
The door key lock cylinder turns
freely when either the wrong key is
used, or the correct key is not fully
inserted. The free-turning door lock
feature prevents the lock from being
forced open. To reset the lock, turn
it to the vertical position with the
correct key fully inserted. Remove
the key and insert it again. If this
does not reset the lock, turn the key
halfway around in the cylinder and
repeat the reset procedure.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Keys, Doors, and Windows 41
The liftgate can be opened when
locked if the RKE transmitter is
within 1 m (3 ft) of the touch pad.
SeeRemote Keyless Entry (RKE)
System Operation 028.
The liftgate has an electric latch.
If the battery is disconnected or has
low voltage, the liftgate will not
open. The liftgate will resume
operation when the battery is
reconnected and charged.
Power Liftgate Operation
{Warning
You or others could be injured if
caught in the path of the power
liftgate. Make sure there is no one
in the way of the liftgate as it is
opening and closing.
Caution
Driving with an open and
unsecured liftgate may result in
damage to the power liftgate
components.
If equipped with a power liftgate, the
switch is on the driver door. The
vehicle must be in P (Park).
The modes are:
. MAX: Opens to maximum
height. .
3/4: Opens to a reduced height
that can be set from 3/4 to fully
open. Use to prevent the liftgate
from opening into overhead
obstructions such as a garage
door or roof-mounted cargo. The
liftgate can be manually opened
all the way.
. OFF: Opens manually only.
To power open or close the liftgate,
select MAX or 3/4 mode.
. Press
btwice quickly on the
RKE transmitter until the liftgate
moves.
. Press
8on the driver door.
. Press the touch pad on the
outside liftgate handle after
unlocking all doors. The RKE
transmitter must be within
1 m (3 ft).

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Keys, Doors, and Windows 45
Vehicle Security
This vehicle has theft-deterrent
features; however, they do not make
the vehicle impossible to steal.
Vehicle Alarm System
This vehicle has an anti-theft alarm
system.
The indicator light, on the
instrument panel near the
windshield, indicates the status of
the system:
Off :Alarm system is disarmed. On Solid :
Vehicle is secured
during the delay to arm the system.
Fast Flash : Vehicle is unsecured.
A door, the hood, or the liftgate
is open.
Slow Flash : Alarm system is
armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle in one of three ways:
.Use the RKE transmitter.
. Use the Keyless Access
system.
. With a door open, press the
inside
Q.
3. After 30 seconds the alarm system will arm, and the
indicator light will begin to
slowly flash indicating the
alarm system is operating.
Pressing
Qon the RKE
transmitter a second time will bypass the 30-second delay
and immediately arm the alarm
system.
If the driver door is opened without
first unlocking with the RKE
transmitter, the horn will chirp and
the lights will flash to indicate
pre-alarm. If the vehicle is not
started, or the door is not unlocked
by pressing
Kon the RKE
transmitter during the 10-second
pre-alarm, the alarm will be
activated.
The aIarm will also be activated if a
door, the hood, or the liftgate is
opened without first disarming the
system. When the alarm is
activated, the turn signals will flash
and the horn will sound for about
30 seconds. The alarm system will
then re-arm to monitor for the next
unauthorized event.
Disarming the Alarm System
To disarm the alarm system or turn
off the alarm if it has been activated:
. Press
Kon the RKE transmitter.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
46 Keys, Doors, and Windows
.Unlock the vehicle using the
Keyless Access system.
. Start the vehicle.
To avoid setting off the alarm by
accident:
. Lock the vehicle after all
occupants have exited.
. Always unlock the vehicle with
the RKE transmitter, or use the
Keyless Access system.
Unlocking the driver door with the
key will not disarm the system or
turn off the alarm.
How to Detect a Tamper
Condition
IfKis pressed on the RKE
transmitter and the horn chirps and
the lights flash three times, an alarm
occurred previously while the alarm
system was armed.
If the alarm has been activated, a
message will appear on the Driver
Information Center (DIC).
Immobilizer
See Radio Frequency Statement
0 337.
Immobilizer Operation
This vehicle has a passive
theft-deterrent system.
The system does not have to be
manually armed or disarmed.
The vehicle is automatically
immobilized when the transmitter
leaves the vehicle.
The immobilization system is
disarmed when the ignition button is
pushed in and a valid transmitter is
found in the vehicle.
The security light in the instrument
cluster comes on when there is a
problem with arming or disarming
the theft-deterrent system.
The system has one or more
transmitters matched to an
immobilizer control unit in your
vehicle. Only a correctly matched
transmitter will start the vehicle.
If the transmitter is ever damaged,
you may not be able to start your
vehicle.
When trying to start the vehicle, the
security light comes on briefly when
the ignition is turned on.
If the engine does not start and the
security light stays on, there is a
problem with the system. Turn the
vehicle off and try again.
If the RKE transmitter appears to be
undamaged, try another transmitter.
Or, you may try placing the
transmitter in the front cupholder.
See “Starting the Vehicle with a Low
Transmitter Battery” underRemote
Keyless Entry (RKE) System
Operation 028.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Seats and Restraints 53
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 54
Front Seats
Power Seat Adjustment . . . . . . . . 56
Lumbar Adjustment . . . . . . . . . . . . 56
Thigh Support Adjustment . . . . . 56
Reclining Seatbacks . . . . . . . . . . . 57
Memory Seats . . . . . . . . . . . . . . . . . 57
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . 60
Rear Seats
Rear Seats . . . . . . . . . . . . . . . . . . . . 61
Rear Seat Armrest . . . . . . . . . . . . . 64
Heated Rear Seats . . . . . . . . . . . . 64
Seat Belts
Seat Belts . . . . . . . . . . . . . . . . . . . . . 65
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . 66
Lap-Shoulder Belt . . . . . . . . . . . . . 67
Seat Belt Use During Pregnancy . . . . . . . . . . . . . . . . . . . . 70
Seat Belt Extender . . . . . . . . . . . . . 70
Safety System Check . . . . . . . . . . 70 Seat Belt Care . . . . . . . . . . . . . . . . . 71
Replacing Seat Belt System
Parts after a Crash . . . . . . . . . . . 71
Airbag System
Airbag System . . . . . . . . . . . . . . . . . 72
Where Are the Airbags? . . . . . . . 73
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . . . 75
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . 76
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . . . . . . 76
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . 77
Passenger Sensing System . . . 78
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . 82
Adding Equipment to the Airbag-Equipped Vehicle . . . . . 83
Airbag System Check . . . . . . . . . . 83
Replacing Airbag System Parts after a Crash . . . . . . . . . . . . . . . . . 84
Child Restraints
Older Children . . . . . . . . . . . . . . . . . 84
Infants and Young Children . . . . 86
Child Restraint Systems . . . . . . . 88
Where to Put the Restraint . . . . . 90
Lower Anchors and Tethers forChildren (LATCH System) . . . . 91 Replacing LATCH System Parts
After a Crash . . . . . . . . . . . . . . . . . 97
Securing Child Restraints (With the Seat Belt in the
Rear Seat) . . . . . . . . . . . . . . . . . . . 98
Securing Child Restraints (With the Seat Belt in the
Front Seat) . . . . . . . . . . . . . . . . . . 100

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Seats and Restraints 55
To lower the head restraint, press
the button located on the top of the
seatback and push the head
restraint down. Try to move the
head restraint after the button is
released to make sure it is locked in
place.
Always adjust the head restraint so
that the top of the restraint is at the
same height as the top of the
occupant’s head.The rear outboard head restraints
are designed to be folded. The head
restraint can be folded backward to
allow for better visibility when the
rear seat is unoccupied. To fold the
head restraint, press the button on
the side of the head restraint.When an occupant is in the seat,
always return the head restraint to
the upright position. Pull the head
restraint up and push it backward
until it locks into place. Push and
pull on the head restraint to make
sure that it is locked.
If you are installing a child restraint
in the rear seat, see
“Securing a
Child Restraint Designed for the
LATCH System” underLower
Anchors and Tethers for Children
(LATCH System) 091.