2018 BUICK ENVISION Rear climate control

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Climate Controls 163
Climate Controls
Climate Control Systems
Dual Automatic ClimateControl System . . . . . . . . . . . . . 163
Rear Climate Control System . . . . . . . . . . . . . . . . . . . . . . 166
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 168
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . 168
Service . . . . . . . . . . . . . . . . . . . . . . . 169
Climate Control Systems
Dual Automatic Climate Control System
The heating, cooling, and ventilation for the vehicle can be controlled with
this system.
1. Driver and Passenger
Temperature Controls
2. Heated and Ventilated Front Seats (If Equipped) 3. Defrost
4. Air Delivery Mode Controls
5. Fan Control

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
164 Climate Controls
6. SYNC (SynchronizedTemperature)
7. AUTO (Automatic Operation)
8. Recirculation
9. A/C (Air Conditioning)
10. Rear Window Defogger
11. Power
Automatic Operation
The system automatically controls
the fan speed, air delivery, air
conditioning, and recirculation in
order to heat or cool the vehicle to
the desired temperature:
When AUTO is lit, all four functions
operate automatically. Each function
can also be manually set and the
selected setting is displayed.
Functions not manually set will
continue to be automatically
controlled, even if the AUTO
indicator is not lit.
For automatic operation:
1. Press AUTO. 2. Set the temperature. Allow the
system time to stabilize. Adjust
the temperature as needed for
best comfort.
To improve fuel efficiency and to
cool the vehicle faster, recirculation
may be automatically selected in
warm weather. The recirculation
light will not come on. Press
@to
select recirculation; press it again to
select outside air.
Q/R: The temperature can be
adjusted separately for the driver
and the passenger. Press to
increase or decrease the
temperature.
SYNC : Press to link the passenger
and rear climate temperature
settings to the driver setting. The
SYNC indicator light will turn on.
When the passenger or rear climate
settings are adjusted, the SYNC
indicator light turns off.
Manual Operation
O: Press to turn the fan off or on.
Q^or^ R:Press to increase or
decrease the fan speed. The fan
speed setting appears on the main
display. Pressing either button
cancels automatic fan control and
the fan is controlled manually. Press
AUTO to return to automatic
operation.
Air Delivery Mode Controls :
Press
X,Y, or[to change the
direction of the airflow. The indicator
light in the button will turn on. Any
combination of the three buttons
can be selected. The indicator light
in the button will turn on. The
current mode appears in the display
screen. Pressing any of the three
buttons cancels automatic air
delivery control and the direction of
the airflow is controlled manually.
Press AUTO to return to automatic
operation.
To change the current mode, select
one or more of the following:
X: Clears the windows of fog or
moisture. Air is directed to the
windshield.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Climate Controls 165
Y:Air is directed to the instrument
panel outlets.
[: Air is directed to the floor
outlets.
0MAX : Air is directed to the
windshield and the fan runs at a
higher speed. Fog or frost is cleared
from the windshield more quickly.
When the button is pressed again,
the system returns to the previous
mode setting.
For best results, clear all snow and
ice from the windshield before
defrosting.
A/C : Press to turn the air
conditioning system on or off. If the
climate control system is turned off
or the outside temperature falls
below freezing, the air conditioner
will not run.
Pressing this button cancels
automatic air conditioning and turns
off the air conditioner. Press AUTO
to return to automatic operation and
the air conditioner runs
automatically as needed. When the
indicator light is on, the air
conditioner runs automatically to cool the air inside the vehicle or to
dry the air needed to defog the
windshield faster.
@:
Press to turn on recirculation.
An indicator light comes on. Air is
recirculated to quickly cool the
inside of the vehicle or to reduce the
entry of outside air and odors.
Auto Defog : The climate control
system may have a sensor to
automatically detect high humidity
inside the vehicle. When high
humidity is detected, the climate
control system may adjust to
outside air supply and turn on the
air conditioner. The fan speed may
slightly increase to help prevent
fogging. If the climate control
system does not detect possible
window fogging, it returns to normal
operation.
To turn Auto Defog off or on, see
“Climate and Air Quality” under
Vehicle Personalization 0143.
Rear Window Defogger
K:Press to turn the rear window
defogger on or off. An indicator light
on the button comes on to show that
the rear window defogger is on.
The defogger can be turned off by
turning the ignition to off or ACC/
ACCESSORY.
The rear window defogger can be
set to automatic operation. See
“Climate and Air Quality” under
Vehicle Personalization 0143.
When auto rear defog is selected,
the rear window defogger turns on
automatically when the interior
temperature is cold and the outside
temperature is about 7 °C (44 °F)
and below. The auto rear defogger
turns off automatically.
If the vehicle is equipped with
heated outside mirrors, they turn on
when the rear window defogger
button is on and help to clear fog or
frost from the surface of the mirror.
See Heated Mirrors 048.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
166 Climate Controls
Caution
Do not try to clear frost or other
material from the inside of the
front windshield and rear window
with a razor blade or anything
else that is sharp. This may
damage the rear window
defogger grid and affect the
radio's ability to pick up stations
clearly. The repairs would not be
covered by the vehicle warranty.
Jorz:PressJorz,
if equipped, to heat the driver or
passenger seat.
Press
Cor{, if equipped, to
ventilate the driver or passenger
seat. See Heated and Ventilated
Front Seats 060.
Sensor
The solar sensor on top of the
instrument panel near the
windshield, monitors the solar heat.
The climate control system uses the
sensor information to adjust the
temperature, fan speed,
recirculation, and air delivery mode
for best comfort.
Do not cover the sensor; otherwise
the automatic climate control system
may not work properly.
Rear Climate Control
System
If equipped, the rear climate control
system is on the rear of the center
console storage. The rear climate
settings can be adjusted with this
system.
1. Fan Control
2. AUTO (Automatic Operation)
3. MODE (Air Delivery Mode
Control)
4. TEMP (Temperature Control)
5. Heated Rear Seats

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Climate Controls 167
Rear Climate Control Display
1. Outside Temperature Display
2. SYNC (Synchronized Temperatures)
3. ON/OFF
4. Rear AUTO (Automatic Operation)
5. Rear Control Lockout
6. Rear Fan Control
7. Air Delivery Mode Control
8. Rear Driver Side and Passenger Side Climate
Temperature Controls
Automatic Operation
AUTO : Press AUTO to control the
inside temperature, air delivery, and
fan speed. A is indicated in the
display when automatic operation is
active. If any of the climate control
settings are manually adjusted, this
cancels full automatic operation.
The display only indicates climate
control functions when the system is
in rear independent mode.
Manual Operation
9: Turn clockwise or
counterclockwise to increase or
decrease the fan speed. Turn
completely counterclockwise to turn
the fan/power off.
TEMP : Turn clockwise or
counterclockwise to increase or
decrease the airflow temperature
into the passenger area. If the
SYNC button is pressed on the front
climate controls, the rear climate
temperature is linked to the driver
temperature setting. MODE :
Press to change the
direction of the airflow in the vehicle.
Repeatedly press the button until
the desired mode appears on the
display. Multiple presses will cycle
through the delivery selections.
If the air delivery mode is directing
all the air to the floor, the rear fan
speed indicator will change when
the knob is turned, but the airflow
amount will not. This is normal
operation for the system.
MorL: If equipped, pressMorLto heat the left or right outboard seat
cushion. See Heated Rear Seats
0 64.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Climate Controls 169
2. Remove the glove boxrear wall.
3. Disconnect the glove box door damper string from the glove
box door assembly. A pen or
pencil may be inserted through
the end of the damper string to
prevent the string from slipping
inside the housing assembly.
4. Squeeze both sides of the glove box bin inward to lower
beyond the stops.5. Release the latches on eitherside of the service door. Open
the service door and remove
the old filter.
6. Install the new air filter.
7. Close the service door completely.
8. Reverse the steps to reinstall the glove box.
See your dealer if additional
assistance is needed.
Service
All vehicles have a label underhood
that identifies the refrigerant used in
the vehicle. The refrigerant system
should only be serviced by trained
and certified technicians. The air
conditioning evaporator should
never be repaired or replaced by
one from a salvage vehicle.
It should only be replaced by a new
evaporator to ensure proper and
safe operation.
During service, all refrigerants
should be reclaimed with proper
equipment. Venting refrigerants
directly to the atmosphere is harmful
to the environment and may also
create unsafe conditions based on
inhalation, combustion, frostbite,
or other health-based concerns.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Driving and Operating 227
.Do not tow a trailer during the
first 800 km (500 mi), to prevent
damage to the engine, axle,
or other parts.
. Then, 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.
. The vehicle can tow in D (Drive)
but manual mode is
recommended. See Manual
Mode 0193. Use a lower gear if
the transmission shifts too often.
. Turn off Parking Assist when
towing.
. Turn off Lane Keep Assist (LKA)
when towing. See Lane Keep
Assist (LKA) 0221.
{Warning
When towing a trailer, exhaust
gases may collect at the rear of
the vehicle and enter if the
liftgate, trunk/hatch, or rear-most
window is open.
(Continued)
Warning (Continued)
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.
. Also adjust the climate
control system to a setting
that brings in only outside
air. See “Climate Control
Systems” in the Index.
For information about carbon
monoxide, see Engine Exhaust
0 190.
Towing a trailer requires a certain
amount of experience. The
combination you are driving is
longer and not as responsive as the
vehicle itself. Get acquainted with
the handling and braking of the rig
before setting out for the open road. Before starting, check all trailer hitch
parts and attachments, safety
chains, electrical connectors, lamps,
tires, and mirrors. If the trailer has
electric brakes, start the
combination moving and then apply
the trailer brake controller by hand
to be sure the brakes work.
During the trip, check occasionally
to be sure that the load is secure
and the lamps and any trailer
brakes still work.
Towing with a Stability Control
System
When towing, the sound of the
stability control system might be
heard. The system is reacting to the
vehicle movement caused by the
trailer, which mainly occurs during
cornering. This is normal when
towing heavier trailers.
Following Distance
Stay at least twice as far behind the
vehicle ahead as you would when
driving the vehicle without a trailer.

Buick Envision Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11434432) - 2018 - CRC - 10/25/17
Index 355
Child Restraints (cont'd)Systems . . . . . . . . . . . . . . . . . . . . . . . . 88
Circuit Breakers . . . . . . . . . . . . . . . . 262
Cleaning Exterior Care . . . . . . . . . . . . . . . . . 301
Interior Care . . . . . . . . . . . . . . . . . . 305
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . 163
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Cluster, Instrument . . . . . . . . . . . . . 117
Collision Damage Repair . . . . . . . 334
Compact Spare Tire . . . . . . . . . . . . 293
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 103
Compass . . . . . . . . . . . . . . . . . . . . . . . 113
Connections OnStar . . . . . . . . . . . . . . . . . . . . . . . 344
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 197
Control of a Vehicle . . . . . . . . . . . . . 173
Convenience Net . . . . . . . . . . . . . . . 107
Convex Mirrors . . . . . . . . . . . . . . . . . . 47
Coolant Engine Temperature Gauge . . 122
Engine TemperatureWarning Light . . . . . . . . . . . . . . . 131 Cooling . . . . . . . . . . . . . . . . . . . . 163, 166
Cooling System . . . . . . . . . . . . . . . . . 247
Courtesy Lamps . . . . . . . . . . . . . . . . 159
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 333
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . 105
Cruise Control . . . . . . . . . . . . . . . . . . 199 Light . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Cruise Control, Adaptive . . . . . . . . 201
Cupholders . . . . . . . . . . . . . . . . . . . . . 103
Customer Assistance . . . . . . . . . . . 330 Offices . . . . . . . . . . . . . . . . . . . . . . . . 329
Text Telephone (TTY)Users . . . . . . . . . . . . . . . . . . . . . . . 330
Customer Information
Service PublicationsOrdering Information . . . . . . . . 336
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . 327
D
Damage Repair, Collision . . . . . . . 334
Danger, Warning, and Caution . . . . 3
Data CollectionInfotainment System . . . . . . . . . . 340
OnStar . . . . . . . . . . . . . . . . . . . . . . . 340
Data Recorders, Event . . . . . . . . . 339 Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . 156
Defensive Driving . . . . . . . . . . . . . . . 172
Delayed Locking . . . . . . . . . . . . . . . . . 38
Diagnostics OnStar . . . . . . . . . . . . . . . . . . . . . . . 346
Distracted Driving . . . . . . . . . . . . . . . 172
Dome Lamps . . . . . . . . . . . . . . . . . . . 159
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 134
Delayed Locking . . . . . . . . . . . . . . . . 38
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Power Locks . . . . . . . . . . . . . . . . . . . . 38
Drive Belt Routing, Engine . . . . . . 326
Drive Systems All-Wheel Drive . . . . . . . . . . 194, 255
Driver Assistance Systems . . . . . 209
Driver Behavior . . . . . . . . . . . . . . . . . 171
Driver Information Center (DIC) . . . . . . . . . . . . . 134, 137
Driving
Assistance Systems . . . . . . . . . . 214
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 226
Defensive . . . . . . . . . . . . . . . . . . . . . 172
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 173
Environment . . . . . . . . . . . . . . . . . . 171
For Better Fuel Economy . . . . . . . 25