ignition BUICK ENCLAVE 2018 Repair Manual

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
234 Driving and Operating
Do not use ACC when driving on
steep hills or when towing a trailer.
ACC will not detect a vehicle in the
lane while driving on steep hills. The
driver will often need to take over
acceleration and braking on steep
hills, especially when towing a
trailer. If the brakes are applied, the
ACC disengages.
Disengaging ACC
There are three ways to
disengage ACC:
.Step lightly on the brake pedal.
. Press
*.
. Press
5.
Erasing Speed Memory
The cruise control set speed is
erased from memory if
5is pressed
or if the ignition is turned off. Cleaning the Sensing System
The radar sensor on the front of the
vehicle can become blocked by
snow, ice, dirt, or mud. This area
needs to be cleaned for ACC to
operate properly.
If ACC will not operate, regular
Cruise Control may be available.
See
“Switching Between ACC and
Regular Cruise Control” previously
in this section. Always consider
driving conditions before using
either cruise control system.
For cleaning instructions, see
“Washing the Vehicle” under
Exterior Care 0330.
System operation may also be
limited under snow, heavy rain,
or road spray conditions.
Driver Assistance
Systems
This vehicle may have features that
work together to help avoid crashes
or reduce crash damage while
driving, backing, and parking. Read
this entire section before using
these systems.
{Warning
Do not rely on the Driver
Assistance Systems. These
systems do not replace the need
for paying attention and driving
safely. You may not hear or feel
alerts or warnings provided by
these systems. Failure to use
proper care when driving may
result in injury, death, or vehicle
damage. See Defensive Driving
0 186.
Under many conditions, these
systems will not: (Continued)

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 289
FusesUsage
F20 –
F21 –
F22 Electronic brake control module
F23 Parking/Trailer lamps
F24 Right trailer stoplamp/Turnlamp
F25 Steering column lock
F26 –
F27 Left trailer stoplamp/Turnlamp
F28 –
F29 –
F30 Washer pump
F31 –
F32 Left low –beam
headlamp
F33 Front fog lamps
F34 Horn
F35 – Fuses
Usage
F36 –
F37 Right low –beam
headlamp
F38 Automatic headlamp leveling
motor (if equipped)
F39 Transmission control module
F40 Left rear bus electrical center/
Ignition
F41 Instrument cluster
F42 Heating, ventilation, and air
conditioning
F43 Head-up display (if equipped)
F44 Communication gateway module/
Run/Crank (if
equipped)
F45 –
F46 – Fuses
Usage
F47 –
F48 –
F49 Interior rearview mirror
F50 Fuel system control module
F51 Heated steering wheel
F52 Folding seats switch
F53 –
F54 Coolant pump
F55 Air conditioning clutch
F56 Integrated chassis control module
F57 Engine control module/Ignition
F58 Transmission control module/
Ignition
F59 Engine control module battery

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Vehicle Care 305
sensors monitor the air pressure in
the tires and transmit the tire
pressure readings to a receiver
located in the vehicle.
When a low tire pressure condition
is detected, the TPMS illuminates
the low tire pressure warning light
located on the instrument cluster.
If the warning light comes on, stop
as soon as possible and inflate the
tires to the recommended pressure
shown on the Tire and Loading
Information label. SeeVehicle Load
Limits 0196.
A message to check the pressure in
a specific tire displays in the Driver
Information Center (DIC). The low
tire pressure warning light and the
DIC warning message come on at
each ignition cycle until the tires are
inflated to the correct inflation
pressure. Using the DIC, tire pressure levels can be viewed. For
additional information and details
about the DIC operation and
displays see
Driver Information
Center (DIC) (Base Level) 0148 or
Driver Information Center (DIC)
(Uplevel) 0150.
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven. This
could be an early indicator that the
air pressure is getting low and
needs to be inflated to the proper
pressure.
A Tire and Loading Information
label, attached to your vehicle,
shows the size of the original
equipment tires and the correct
inflation pressure for the tires when
they are cold. See Vehicle Load
Limits 0196, for an example of the
Tire and Loading Information label
and its location. Also see Tire
Pressure 0302.
The TPMS can warn about a low
tire pressure condition but it does
not replace normal tire maintenance. See
Tire Inspection
0 308, Tire Rotation 0309 andTires
0 295.
Caution
Tire sealant materials are not all
the same. A non-approved tire
sealant could damage the TPMS
sensors. TPMS sensor damage
caused by using an incorrect tire
sealant is not covered by the
vehicle warranty. Always use only
the GM approved tire sealant
available through your dealer or
included in the vehicle.
TPMS Malfunction Light and
Message
The TPMS will not function properly
if one or more of the TPMS sensors
are missing or inoperable. When the
system detects a malfunction, the
low tire pressure warning light
flashes for about one minute and
then stays on for the remainder of
the ignition cycle. A DIC warning
message also displays. The

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
306 Vehicle Care
malfunction light and DIC warning
message come on at each ignition
cycle until the problem is corrected.
Some of the conditions that can
cause these to come on are:
.One of the road tires has been
replaced with the spare tire. The
spare tire does not have a
TPMS sensor. The malfunction
light and DIC message should
go off after the road tire is
replaced and the sensor
matching process is performed
successfully. See “TPMS Sensor
Matching Process” later in this
section.
. The TPMS sensor matching
process was not done or not
completed successfully after
rotating the tires. The
malfunction light and the DIC
message should go off after
successfully completing the
sensor matching process. See
"TPMS Sensor Matching
Process" later in this section.
. One or more TPMS sensors are
missing or damaged. The
malfunction light and the DIC message should go off when the
TPMS sensors are installed and
the sensor matching process is
performed successfully. See
your dealer for service.
. Replacement tires or wheels do
not match the original equipment
tires or wheels. Tires and wheels
other than those recommended
could prevent the TPMS from
functioning properly. See Buying
New Tires 0310.
. Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly it cannot detect or signal a
low tire pressure condition. See
your dealer for service if the TPMS
malfunction light and DIC message
come on and stay on.Tire Fill Alert (If Equipped)
This feature provides visual and
audible alerts outside the vehicle to
help when inflating an underinflated
tire to the recommended cold tire
pressure.
When the low tire pressure warning
light comes on: 1. Park the vehicle in a safe, level place.
2. Set the parking brake firmly.
3. Place the vehicle in P (Park).
4. Add air to the tire that is underinflated. The turn signal
lamp will flash.
When the recommended
pressure is reached, the horn
sounds once and the turn
signal lamp will stop flashing
and briefly turn solid.
Repeat these steps for all
underinflated tires that have
illuminated the low tire pressure
warning light.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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Vehicle Care 307
If the tire is overinflated by more
than 35 kPa (5 psi), the horn will
sound multiple times and the turn
signal lamp will continue to flash for
eight seconds after filling stops. To
release and correct the pressure,
while the turn signal lamp is still
flashing, briefly press the center of
the valve stem. When the
recommended pressure is reached,
the horn sounds once.
If the turn signal lamp does not flash
within 15 seconds after starting to
inflate the tire, the tire fill alert has
not been activated or is not working.
If the hazard warning flashers are
on, the tire fill alert visual feedback
will not work properly.
The TPMS will not activate the tire
fill alert properly under the following
conditions:
.There is interference from an
external device or transmitter.
. The air pressure from the
inflation device is not sufficient
to inflate the tire. .
There is a malfunction in
the TPMS.
. There is a malfunction in the
horn or turn signal lamps.
. The identification code of the
TPMS sensor is not registered to
the system.
. The battery of the TPMS sensor
is low.
If the tire fill alert does not operate
due to TPMS interference, move the
vehicle about 1 m (3 ft) back or
forward and try again. If the tire fill
alert feature is not working, use a
tire pressure gauge.
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a new
tire/wheel position after rotating the
vehicle’s tires or replacing one or
more of the TPMS sensors. The
TPMS sensor matching process
should also be performed after
replacing a spare tire with a road
tire containing the TPMS sensor. The malfunction light and the DIC
message should go off at the next
ignition cycle. The sensors are
matched to the tire/wheel positions,
using a TPMS relearn tool, in the
following order: driver side front
tire, passenger side front tire,
passenger side rear tire, and driver
side rear. See your dealer for
service or to purchase a relearn
tool. A TPMS relearn tool can also
be purchased. See Tire Pressure
Monitor Sensor Activation Tool at
www.gmtoolsandequipment.com or
call 1-800-GM TOOLS
(1-800-468-6657).
There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes
longer, the matching process stops
and must be restarted.
The TPMS sensor matching
process is:
1. Set the parking brake.
2. Place the vehicle in Service Mode. See Ignition Positions
0 200.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
326 Vehicle Care
4. Turn the ignition off. Turn off alllights and accessories in both
vehicles, except the hazard
warning flashers if needed.
{Warning
An electric fan can start up even
when the engine is not running
and can injure you. Keep hands,
clothing, and tools away from any
underhood electric fan.
{Warning
Using a match near a battery can
cause battery gas to explode.
People have been hurt doing this,
and some have been blinded.
Use a flashlight if you need more
light.
Battery fluid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, flush
the place with water and get
medical help immediately.
{Warning
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.
5. Connect one end of the red positive (+) cable to the
positive (+) terminal on the
discharged battery.
6. Connect the other end of the red positive (+) cable to the
positive (+) terminal of the good
battery.
7. Connect one end of the black negative (–) cable to the
negative (–) terminal of the
good battery.
8. Connect the other end of the black negative (–) cable to the
remote negative (–) terminal for
the discharged battery.
9. Start the engine in the vehicle with the good battery and run
the engine at idle speed for at
least four minutes. 10. Try to start the vehicle that had
the dead battery. If it will not
start after a few tries, it
probably needs service.
Caution
If the jumper cables are
connected or removed in the
wrong order, electrical shorting
may occur and damage the
vehicle. The repairs would not be
covered by the vehicle warranty.
Always connect and remove the
jumper cables in the correct order,
making sure that the cables do
not touch each other or other
metal.
Jumper Cable Removal
Reverse the sequence exactly when
removing the jumper cables.
After starting the disabled vehicle
and removing the jumper cables,
allow it to idle for several minutes.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
OnStar 371
Security
If equipped, OnStar provides these
services:
.With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
. With Remote Ignition Block,
if equipped, OnStar can block
the engine from being restarted.
. With Stolen Vehicle Slowdown,
if equipped, OnStar can work
with law enforcement to
gradually slow the vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the
vehicle.
Navigation
OnStar navigation requires a
specific OnStar service plan. Press
Qto receive Turn-by-Turn
directions or have them sent to the
vehicle’s navigation screen,
if equipped.
Turn-by-Turn Navigation
1. PressQto connect to an
Advisor.
2. Request directions to be downloaded to the vehicle.
3. Follow the voice-guided commands.
Using Voice Commands
During a Planned Route
Functionality of the Voice Command
button may vary by vehicle and
region. For some vehicles, press
=
to open the OnStar app on the
infotainment display. For other
vehicles press
=as follows.
Cancel Route
1. Press
=. System responds:
“OnStar ready,” then a tone. 2. Say
“Cancel route.” System
responds: “Do you want to
cancel directions?”
3. Say “Yes.”System responds:
“OK, request completed, thank
you, goodbye.”
Route Preview
1. Press
=. System responds:
“OnStar ready,” then a tone.
2. Say “Route preview.” System
responds with the next three
maneuvers.
Repeat
1. Press
=. System responds:
“OnStar ready,” then a tone.
2. Say “Repeat.” System
responds with the last direction
given, then responds with
“OnStar ready,” then a tone.
Get My Destination
1. Press
=. System responds:
“OnStar ready,” then a tone.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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376 OnStar
services. Service involving location
information about the vehicle cannot
work unless GPS signals are
available, unobstructed, and
compatible with the OnStar
hardware. OnStar services may not
work if the OnStar equipment is not
properly installed or it has not been
properly maintained. If equipment or
software is added, connected,
or modified, OnStar services may
not work. Other problems beyond
the control of OnStar—such as
hills, tall buildings, tunnels, weather,
electrical system design and
architecture of the vehicle, damage
to the vehicle in a crash, or wireless
phone network congestion or
jamming —may prevent service.
See Radio Frequency Statement
0 365.
Services for People with
Disabilities
Advisors provide services to help
with physical disabilities and
medical conditions. Press
Qto help:
. Locate a gas station with an
attendant to pump gas.
. Find a hotel, restaurant, etc.,
that meets accessibility needs.
. Provide directions to the closest
hospital or pharmacy in urgent
situations.
TTY Users
OnStar has the ability to
communicate to deaf,
hard-of-hearing, or speech-impaired
customers while in the vehicle. The
available dealer-installed TTY
system can provide in-vehicle
access to all OnStar services,
except Virtual Advisor and OnStar
Turn-by-Turn Navigation.
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some
OnStar services. The PIN will need
to be changed the first time when
speaking with an Advisor. To change the OnStar PIN, contact an
OnStar Advisor by pressing
Qor
calling 1-888-4ONSTAR.
Warranty
OnStar equipment may be
warranted as part of the vehicle
warranty.
Languages
The vehicle can be programmed to
respond in multiple languages.
Press
Qand ask for an Advisor.
Advisors are available in English,
Spanish, and French. Available
languages may vary by country.
Potential Issues
OnStar cannot perform Remote
Door Unlock or Stolen Vehicle
Assistance after the vehicle has
been off continuously for 10 days
without an ignition cycle. If the
vehicle has not been started for
10 days, OnStar can contact
Roadside Assistance or a locksmith
to help gain access to the vehicle.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
10999311) - 2018 - crc - 11/20/17
Index 385
G
Garage Door Opener . . . . . . . . . . . 162Programming . . . . . . . . . . . . . . . . . 162
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 283
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 137
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Odometer . . . . . . . . . . . . . . . . . . . . . 135
Speedometer . . . . . . . . . . . . . . . . . 135
Tachometer . . . . . . . . . . . . . . . . . . . 135
Trip Odometer . . . . . . . . . . . . . . . . 135
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 131
General Information Service and Maintenance . . . . . 339
Towing . . . . . . . . . . . . . . . . . . . . . . . . 253
Vehicle Care . . . . . . . . . . . . . . . . . . 264
Glove Box . . . . . . . . . . . . . . . . . . . . . . 117
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 359
H
Hazard Warning Flashers . . . . . . . 170
Head Restraints . . . . . . . . . . . . . . . . . 61
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . 284
Automatic . . . . . . . . . . . . . . . . . . . . . 169 Headlamps (cont'd)
Bulb Replacement . . . . . . . . . . . . 285
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 169
Flash-to-Pass . . . . . . . . . . . . . . . . . 168
High-Beam On Light . . . . . . . . . . 146
High/Low Beam Changer . . . . . 168
Lamps On Reminder . . . . . . . . . 147
Heated
Rear Seats . . . . . . . . . . . . . . . . . . . . . 72
Steering Wheel . . . . . . . . . . . . . . . 123
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Heated Mirrors . . . . . . . . . . . . . . . . . . . 52
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . 204
Heating . . . . . . . . . . . . . . . . . . . . 176, 180
High-Beam On Light . . . . . . . . . . . . 146
High-Speed Operation . . . . . . . . . . 303
Hill and Mountain Roads . . . . . . . . 194
Hill Start Assist (HSA) . . . . . . . . . . 219
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 76
HVAC . . . . . . . . . . . . . . . . . . . . . . 176, 180
I
Ignition Positions . . . . . . . . . . . . . . . 200
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 50
Indicator Pedestrian Ahead . . . . . . . . . . . . 144
Vehicle Ahead . . . . . . . . . . . . . . . . 144
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 97
Infotainment . . . . . . . . . . . . . . . . . . . . 175
Infotainment System . . . . . . . . . . . . 368
Instrument Cluster . . . . . . . . . . . . . . 132
Interior Rearview Mirrors . . . . . . . . . 53
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 324
K
Keyless EntryRemote (RKE) System . . . . . . . . . 30
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
L
Labeling, Tire Sidewall . . . . . . . . . . 296
Lamps Courtesy . . . . . . . . . . . . . . . . . . . . . . 171
Daytime Running (DRL) . . . . . . 169
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 171