automatic BUICK ENCLAVE 2018 Service Manual

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Lighting 169
Daytime Running
Lamps (DRL)
DRL can make it easier for others to
see the front of your vehicle during
the day. Fully functional DRL are
required on all vehicles first sold in
Canada.
The dedicated DRL will come on
when all of the following conditions
are met:
.The ignition is on.
. The exterior lamp control is
in AUTO.
. The light sensor determines it is
daytime.
. The vehicle is not parked.
The taillamps, instrument panel
lights, and other lamps will not
be on.
The DRL turn off when the
headlamps are turned to
Oor the
ignition is off. For vehicles sold in
Canada, this control only works
when the vehicle is parked.
Automatic Headlamp
System
When the exterior lamp control is
set to AUTO and it is dark enough
outside, the headlamps come on
automatically.
There is a light sensor on top of the
instrument panel. Do not cover the
sensor; otherwise the headlamps
will come on when they are not
needed.
The system may also turn on the
headlamps when driving through a
parking garage or tunnel. If the vehicle is started in a dark
garage, the automatic headlamp
system comes on immediately. If it
is light outside when the vehicle
leaves the garage, there is a slight
delay before the automatic
headlamp system changes to the
Daytime Running Lamps (DRL).
During that delay, the instrument
cluster may not be as bright as
usual. Make sure the instrument
panel brightness control is in the full
bright position. See
Instrument
Panel Illumination Control 0171.
When it is bright enough outside,
the headlamps will turn off or may
change to DRL.
The automatic headlamp system
turns off when the exterior lamp
control is turned toOor the ignition
is off.
Lights On with Wipers
If the windshield wipers are
activated in daylight with the engine
on, and the exterior lamp control is
in AUTO, the headlamps, parking
lamps, and other exterior lamps
come on. The transition time for the

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Lighting 173
Exit Lighting
Some exterior lamps and interior
lights 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 after the ignition is turned off.
The exterior lamps and dome lamp
remain on for a set amount of time,
then automatically turn off.
The exterior lamps turn off
immediately by turning the exterior
lamp control off.
This feature can be changed. See
Vehicle Personalization0154.
Battery Load
Management
The vehicle has Electric Power
Management (EPM) that 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. If the vehicle
has a voltmeter gauge or a voltage
display on the Driver Information
Center (DIC), you may see the
voltage move 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 of the
power needed for very high
electrical loads.
A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, 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 battery voltage
and charging message displays. It is
recommended that the driver reduce
the electrical loads as much as
possible.
See
Driver Information Center (DIC)
(Base Level) 0148 orDriver
Information Center (DIC) (Uplevel)
0 150.Battery Power Protection
This feature helps prevent the
battery from being drained, if the
interior courtesy lamps or reading
lamps are accidentally left on. If any
of these lamps are left on, they
automatically turn off after

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
176 Climate Controls
Climate Controls
Climate Control Systems
Dual Automatic ClimateControl System . . . . . . . . . . . . . 176
Rear Climate Control System . . . . . . . . . . . . . . . . . . . . . . 180
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . 182
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . 183
Service . . . . . . . . . . . . . . . . . . . . . . . 183
Climate Control Systems
Dual Automatic Climate Control System
The climate control buttons on the center stack and on the climate control
display are used to adjust the heating, cooling, and ventilation.
Center Stack Climate Controls
1. Driver and Passenger Temperature Displays
2. Driver and Passenger Temperature Controls
3. Driver and Passenger Heated and Ventilated Seats (If
Equipped) 4. Fan Controls
5. CLIMATE (Climate Control
Display)
6. MAX Defrost
7. Recirculation

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Climate Controls 177
8. Rear Window Defogger andHeated Outside Mirrors (If
Equipped)
9. Power (ON/OFF)
10. AUTO (Automatic Operation)
Climate Control Display
1. Outside Temperature Display
2. Driver and Passenger Temperature Controls
3. Fan Control
4. Sync (Synchronized Temperature)
5. A/C (Air Conditioning) 6. Climate Control Selection
(Application Tray Button)
7. Air Delivery Mode Control
The fan, air delivery mode, air
conditioning, driver and passenger
temperatures, and Sync settings
can be controlled by touching
CLIMATE on the infotainment
display Home Page or the climate
button in the application tray display.
A selection can then be made on
the front climate control page
displayed. See the infotainment
manual.
Climate Control Status Display
The climate control status display
appears briefly when the climate
controls on the center stack are
adjusted. The air delivery mode can
be adjusted on the climate control
display.
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.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
178 Climate Controls
To improve fuel efficiency and to
cool the vehicle faster with A/C on,
recirculation may be automatically
selected in warm weather. Press
@to select recirculation; press it
again to select outside air.
Driver and Passenger
Temperature Controls : The
temperature can be adjusted
separately for the driver and the
passenger. Turn the knob clockwise
or counterclockwise to increase or
decrease the driver or passenger
temperature setting.
The driver and passenger
temperatures can also be adjusted
by touching the controls on the
climate control display.
Sync : Touch Sync on the display to
link all passenger settings to the
driver settings. Adjust the driver side
temperature control to change the
linked temperature. When the
passenger settings are adjusted, the
Sync button is displayed and the
temperatures are unlinked.
Manual Operation
CLIMATE : Press CLIMATE to show
the climate control display.
ON/OFF : Press to turn the fan on
or off. When off, no air will flow into
the vehicle. Turning the fan on,
pressing any other button, or turning
a knob will turn the system back on
using the current setting.
hi: Press or touch the fan controls
on the center stack or the display to
increase or decrease the fan speed.
The fan speed setting displays.
Pressing either button cancels
automatic fan control and the fan is
controlled manually. Press AUTO to
return to automatic operation.
Air Delivery Mode Control : When
the climate information is displayed,
touch
6,Y, orXon the display to
change the direction of air flow. Any
combination of the three modes can
be selected. The selected air
delivery mode is lit. Pressing any
mode control 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:
6:
Air is directed to the floor
outlets, with some air to the
windshield and side windows.
Y: Air is directed to the instrument
panel outlets.
X: Clears the windows of fog or
moisture. Air is directed to the
windshield.
1MAX : Air is directed to the
windshield, the fan runs at a higher
speed, and the temperature of the
air is increased if not already at
maximum. This mode overrides the
previous mode selected and clears
fog or frost from the windshield
more quickly. When
1MAX is
pressed again, the system returns
to the previous mode setting and
fan speed.
For best results, clear all snow and
ice from the windshield before
defrosting.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Climate Controls 179
A/C (Air Conditioning) :Touch A/C
on the display to turn the air
conditioning on or off. If the fan is
turned off, the air conditioner will not
run and A/C OFF will show on the
climate control display.
Touch AUTO to return to automatic
operation and the air conditioner
runs automatically as needed.
@: 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.
If selected during cool or cold
weather, the windshield and
windows may fog. Turn off
recirculation to help clear the
windshield and windows.
Auto Defog : The climate control
system has 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 0154.
Ionizer : If equipped with an ionizer,
this feature helps to clean the air
inside the vehicle and remove
contaminants such as pollen, odors,
and dust. If the climate control
system is on and the ionizer is
enabled, Ionizer On will be
displayed. To turn the ionizer on or
off, see “Climate and Air Quality”
under Vehicle Personalization
0 154.
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
rear window defogger only works
when the engine is running. It turns
off when the ignition is turned off or
in ACC/ACCESSORY. The rear window defogger can be
set to automatic operation. See
“Climate and Air Quality”
under
Vehicle Personalization 0154.
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 4 °C (40 °F)
and below. The auto rear defogger
turns off automatically after about
10 minutes, or after five minutes if
the outside temperature is not
as cold.
The upper gridlines on the rear
window are antenna lines and are
not intended to heat when the
defogger is activated.
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 052.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
180 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.
Heated and Ventilated Seats
MorL:If equipped, pressMorLto heat the driver or passenger seat.
Cor{:If equipped, pressCor{to ventilate the driver or
passenger seat. See Heated and
Ventilated Seats 014.
Remote Start Climate Control
Operation : The climate control
system may run when the vehicle is
started remotely. If the vehicle has
heated or ventilated seats, they may come on during a remote start.
See
Remote Vehicle Start 036 and
Heated and Ventilated Seats 014.
Sensors
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
The rear climate control system is
on the rear of the center console
storage. The settings can be
adjusted with the rear climate
controls and the rear climate
display.
Rear Climate Controls
1. Fan Control
2. AUTO (Automatic Operation)
3. MODE (Air Delivery Mode Control)
4. TEMP (Temperature Control)
5. Heated Rear Seats (If Equipped)

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Climate Controls 181
Rear Climate Control Display
1. Outside Temperature Display
2. SYNC (Synchronized Temperatures)
3. Front Climate Control Display
4. REAR
O(On/Off)
5. Rear Auto (Automatic Operation)
6. Rear Control Lockout
7. Fan Control
8. Air Delivery Mode Control
9. Rear Climate Temperature Control REAR
O:
Press REAROto turn
the rear climate control on or off.
SYNC : Press SYNC on the rear
climate display to match the rear
climate control temperature to the
front climate control driver
temperature. The SYNC button will
be lit. Adjust the rear climate control
temperature to change the linked
temperature. The SYNC button
turns off.
Rear Control Lockout : Press Rear
Control Lockout on the rear climate
display to lock or unlock control of
the rear climate control system from
the front seat. When locked,
Qwill
show on the rear climate display.
The rear climate control system
cannot be adjusted from the second
row seats.
Automatic Operation
AUTO : Press AUTO or touch Rear
AUTO on the rear climate display to
automatically control air delivery
and fan speed. A is indicated in the
display on the rear of the center
console storage when automatic operation is active. If any of the
climate control settings are manually
adjusted, this cancels full automatic
operation.
The display on the rear of the center
console storage only indicates
climate control functions when the
system is in rear independent mode.
When SYNC is active the display is
not shown.
Manual Operation
9:
Turn the knob clockwise or
counterclockwise or press and hold
SorTon the rear climate display
to increase or decrease the fan
speed.
TEMP : Turn the knob clockwise or
counterclockwise or press and hold
the rear climate display temperature
controls to adjust the rear
passenger temperature. If SYNC is
lit, the rear climate temperature is
linked to the driver temperature
setting.
Y/6or MODE : Touch one or both
modes on the rear climate display or
press MODE on the rear climate
controls to change the direction of

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
184 Driving and Operating
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . 185
Defensive Driving . . . . . . . . . . . . . 186
Drunk Driving . . . . . . . . . . . . . . . . . 186
Control of a Vehicle . . . . . . . . . . . 186
Braking . . . . . . . . . . . . . . . . . . . . . . . 186
Steering . . . . . . . . . . . . . . . . . . . . . . 187
Off-Road Recovery . . . . . . . . . . . 187
Loss of Control . . . . . . . . . . . . . . . 188
Off-Road Driving . . . . . . . . . . . . . 188
Driving on Wet Roads . . . . . . . . 193
Hill and Mountain Roads . . . . . 194
Winter Driving . . . . . . . . . . . . . . . . 194
If the Vehicle Is Stuck . . . . . . . . 196
Vehicle Load Limits . . . . . . . . . . . 196
Starting and Operating
New Vehicle Break-In . . . . . . . . . 200
Ignition Positions . . . . . . . . . . . . . 200
Starting the Engine . . . . . . . . . . . 202
Engine Heater . . . . . . . . . . . . . . . . 204
Retained AccessoryPower (RAP) . . . . . . . . . . . . . . . . 205
Shifting Into Park . . . . . . . . . . . . . 205
Shifting out of Park . . . . . . . . . . . 206 Parking over Things
That Burn . . . . . . . . . . . . . . . . . . . 208
Extended Parking . . . . . . . . . . . . 208
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 209
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . 210
Automatic Transmission
Automatic Transmission . . . . . . 210
Manual Mode . . . . . . . . . . . . . . . . . 215
Tow/Haul Mode . . . . . . . . . . . . . . . 216
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . 216
Brakes
Antilock BrakeSystem (ABS) . . . . . . . . . . . . . . . 217
Electric Parking Brake . . . . . . . . 218
Brake Assist . . . . . . . . . . . . . . . . . . 219
Hill Start Assist (HSA) . . . . . . . . 219
Ride Control Systems
Traction Control/Electronic Stability Control . . . . . . . . . . . . . 220
Driver Mode Control . . . . . . . . . . 222
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . 224
Adaptive Cruise Control . . . . . . 226
Driver Assistance Systems
Driver Assistance Systems . . . 234
Assistance Systems for Parking or Backing . . . . . . . . . . 235
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . 239
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . 239
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . 241
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . 243
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 245
Lane Change Alert (LCA) . . . . . 245
Lane Departure Warning (LDW) . . . . . . . . . . . . . 247
Lane Keep Assist (LKA) . . . . . . 247
Fuel
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 249
California Fuel Requirements . . . . . . . . . . . . . . . 250
Fuels in Foreign Countries . . . 250
Fuel Additives . . . . . . . . . . . . . . . . 250
Filling the Tank . . . . . . . . . . . . . . . 250
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 252

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Driving and Operating 203
Caution
Cranking the engine for long
periods of time, by returning the
ignition to the START position
immediately after cranking has
ended, can overheat and damage
the cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to let the
cranking motor cool down.
2. If the engine does not start after five to 10 seconds,
especially in very cold weather
(below −18 °C or 0 °F), it could
be flooded with too much
gasoline. Try pushing the
accelerator pedal all the way to
the floor and holding it there as
you press ENGINE START/
STOP, for up to a maximum of
15 seconds. Wait at least
15 seconds between each try,
to allow the cranking motor to
cool down. When the engine
starts, let go of the button and
the accelerator. If the vehicle starts briefly but then stops
again, do the same thing. This
clears the extra gasoline from
the engine. Do not race the
engine immediately after
starting it. Operate the engine
and transmission gently until
the oil warms up and lubricates
all moving parts.
Stop/Start System
This vehicle has a stop/start system
to shut off the engine to help
conserve fuel. It has components
designed for the increased number
of starts.
{Warning
The automatic engine Stop/Start
feature causes the engine to shut
off while the vehicle is still on. Do
not exit the vehicle before shifting
to P (Park). The vehicle may
restart and move unexpectedly.
Always shift to P (Park), and then
turn the ignition off before exiting
the vehicle.
Auto Engine Stop/Start
When the brakes are applied and
the vehicle is at a complete stop,
the engine may turn off. When
stopped, the tachometer displays
AUTO STOP. See
Tachometer
0 135. When the brake pedal is
released or the accelerator pedal is
pressed, the engine will restart.
To maintain vehicle performance,
other conditions may cause the
engine to automatically restart
before the brake pedal is released.
Auto Stops may not occur and/or
auto restarts may occur because:
. The climate control settings
require the engine to be running
to cool or heat the vehicle
interior.
. The vehicle battery charge
is low.
. The vehicle battery has recently
been disconnected.
. Minimum vehicle speed has not
been reached since the last
Auto Stop.