2019 BUICK LACROSSE Owner's Manual

84164843 B
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Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . 2
In Brief . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Keys, Doors, and Windows . . . . . 28
Seats and Restraints . . . . . . . . . . . 52
Storage . . . . . . . . . . . . . . . . . . . . . . . 102
Instruments and Controls . . . . . . 105
Lighting . . . . . . . . . . . . . . . . . . . . . . . 149
Infotainment System . . . . . . . . . . 156
Climate Controls . . . . . . . . . . . . . . 157
Driving and Operating . . . . . . . . . 164
Vehicle Care . . . . . . . . . . . . . . . . . . 234
Service and Maintenance . . . . . 318
Technical Data . . . . . . . . . . . . . . . . 332
Customer Information . . . . . . . . . 335
Reporting Safety Defects . . . . . . 345
OnStar . . . . . . . . . . . . . . . . . . . . . . . . 349
Connected Services . . . . . . . . . . . 357
Index . . . . . . . . . . . . . . . . . . . . 361

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
2 Introduction
Introduction
The names, logos, emblems,
slogans, vehicle model names, and
vehicle body designs appearing in
this manual including, but not limited
to, GM, the GM logo, BUICK, the
BUICK Emblem, and LACROSSE
are trademarks and/or service
marks of General Motors LLC, its
subsidiaries, affiliates, or licensors.
For vehicles first sold in Canada,
substitute the name“General
Motors of Canada Company” for
Buick Motor Division wherever it
appears in this manual. This manual describes features that
may or may not be on the vehicle
because of optional equipment that
was not purchased on the vehicle,
model variants, country
specifications, features/applications
that may not be available in your
region, or changes subsequent to
the printing of this owner
’s manual.
Refer to the purchase
documentation relating to your
specific vehicle to confirm the
features.
Keep this manual in the vehicle for
quick reference.
Canadian Vehicle Owners
A French language manual can be
obtained from your dealer, at
www.helminc.com, or from:
Propriétaires Canadiens
On peut obtenir un exemplaire de
ce guide en français auprès du
concessionnaire ou à l'adresse
suivante: Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
USA
Using this Manual
To quickly locate information about
the vehicle, use the Index in the
back of the manual. It is an
alphabetical list of what is in the
manual and the page number where
it can be found.
Danger, Warning, and
Caution
Warning messages found on vehicle
labels and in this manual describe
hazards and what to do to avoid or
reduce them.
Litho in U.S.A.
Part No. 84164843 B Second Printing©2018 General Motors LLC. All Rights Reserved.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Introduction 3
{Danger
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
{Warning
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means“Do
Not,” “Do not do this,” or“Do not let
this happen.”
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message,
gauge, or indicator.
M: Shown when the owner ’s
manual has additional instructions
or information.
*: Shown when the service
manual has additional instructions
or information.
0: Shown when there is more
information on another page —
“see page.” Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. See the
features in this manual for
information.
u:
Air Conditioning System
G:Air Conditioning Refrigerant Oil
9:Airbag Readiness Light
!:Antilock Brake System (ABS)
$:Brake System Warning Light
9:Dispose of Used Components
Properly
P: Do Not Apply High Pressure
Water
B: Engine Coolant Temperature
g: First Responder
_:Flame/Fire Prohibited
H:Flammable
[:Forward Collision Alert
R: Fuse Block Cover Lock
Location
+: Fuses

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
4 Introduction
_:High Voltage
j: ISOFIX/LATCH System Child
Restraints
Q: Keep Fuse Block Covers
Properly Installed
|: Lane Change Alert
@:Lane Departure Warning
A:Lane Keep Assist
*:Malfunction Indicator Lamp
::Oil Pressure
X:Park Assist
~:Pedestrian Ahead Indicator
O:Power
7: Rear Cross Traffic Alert
I:Registered Technician
/:Remote Vehicle Start
>:Seat Belt Reminders
I: Side Blind Zone Alert
7:Tire Pressure Monitor
d:Traction Control/StabiliTrak/
Electronic Stability Control (ESC)
a: Under Pressure
V:Vehicle Ahead Indicator

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
In Brief 5
In Brief
Instrument Panel
Instrument Panel . . . . . . . . . . . . . . . . 6
Initial Drive Information
Initial Drive Information . . . . . . . . . . 8
Stop/Start System . . . . . . . . . . . . . . . 8
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . . 8
Door Locks . . . . . . . . . . . . . . . . . . . . . 9
Trunk Release . . . . . . . . . . . . . . . . . . 9
Windows . . . . . . . . . . . . . . . . . . . . . . . 10
Seat Adjustment . . . . . . . . . . . . . . . 10
Memory Features . . . . . . . . . . . . . . 11
Heated and Ventilated Seats . . . 11
Head Restraint Adjustment . . . . 12
Seat Belts . . . . . . . . . . . . . . . . . . . . . 12
Passenger Sensing System . . . 12
Mirror Adjustment . . . . . . . . . . . . . . 13
Steering Wheel Adjustment . . . . 13
Interior Lighting . . . . . . . . . . . . . . . . 14
Exterior Lighting . . . . . . . . . . . . . . . 15
Windshield Wiper/Washer . . . . . . 15
Climate Controls . . . . . . . . . . . . . . . 16
Transmission . . . . . . . . . . . . . . . . . . 17
Vehicle Features
Infotainment System . . . . . . . . . . . 18
Steering Wheel Controls . . . . . . . 18
Cruise Control . . . . . . . . . . . . . . . . . 19
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . 19
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . 20
Forward Automatic Braking (FAB) . . . . . . . . . . . . . . . . 20
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . 20
Lane Keep Assist (LKA) . . . . . . . 20
Lane Change Alert (LCA) . . . . . . 20
Rear Vision Camera (RVC) . . . . 21
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . . . . . . . . . . . . 21
Parking Assist . . . . . . . . . . . . . . . . . 21
Automatic Parking Assist (APA) . . . . . . . . . . . . . . . . . . 21
Power Outlets . . . . . . . . . . . . . . . . . 21
Universal Remote System . . . . . 22
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 22
eAssist Features
eAssist Overview . . . . . . . . . . . . . . 23
High Voltage Safety Information . . . . . . . . . . . . . . . . . . . 24
Automatic Engine Stop/Start Feature . . . . . . . . . . . . . . . . . . . . . . . 24 Regenerative Braking . . . . . . . . . . 24
Battery . . . . . . . . . . . . . . . . . . . . . . . . . 24
Service . . . . . . . . . . . . . . . . . . . . . . . . 24
Performance and Maintenance
Traction Control/Electronic
Stability Control . . . . . . . . . . . . . . 25
Tire Pressure Monitor . . . . . . . . . . 25
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
E85 or FlexFuel . . . . . . . . . . . . . . . . 26
Engine Oil Life System . . . . . . . . 26
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . . . 26
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . 27

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
6 In Brief
Instrument Panel
Instrument Panel Overview

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
In Brief 7
1.Air Vents 0162.
2. Exterior Lamp Controls 0149.
Fog Lamps 0152.
Instrument Panel Illumination
Control 0153.
3. Turn and Lane-Change Signals
0152.
4. Tap Shift Controls (If Equipped). See Manual Mode
0 191.
5. Instrument Cluster 0114.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) 0131.
6. Windshield Wiper/Washer
0107.
7. Hazard Warning Flashers
0151.
8. Light Sensor. See Automatic
Headlamp System 0150.
9. Infotainment 0156.
10. Dual Automatic Climate Control
System 0157. 11.
Traction Control/Electronic
Stability Control 0196.
Park Assist Button (If
Equipped). See Driver
Assistance Systems 0208.
SPORT Button (If Equipped).
See Selective Ride Control
0 198.
Lane Keep Assist (LKA) 0222
(If Equipped).
Automatic Parking Assist
Button (If Equipped). See
Driver Assistance Systems
0 208.
12. Shift Lever. See Automatic
Transmission 0187.
13. ENGINE START/STOP Button (Out of View). See Ignition
Positions 0176.
14. Steering Wheel Controls. See the infotainment manual.
Driver Information Center (DIC)
Controls. See Driver
Information Center (DIC) 0131.
15. Horn 0107. 16.
Steering Wheel Adjustment
0106 (Out of View).
17. Cruise Control 0199 (If
Equipped).
Adaptive Cruise Control 0201
(If Equipped).
Forward Collision Alert (FCA)
System 0214 (If Equipped).
Heated Steering Wheel 0106
(If Equipped).
18. Head-Up Display (HUD) 0134
(If Equipped).
19. Hood Release (Out of View). SeeHood 0237.
20. Front Storage.
21. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0122.
22. Electric Parking Brake 0193.