Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Driving and Operating 199
Approaching and Following a
Vehicle
The vehicle ahead indicator is in the
instrument cluster and HUD display.
The vehicle ahead indicator only
displays when a vehicle is detected
in your vehicle’s path moving in the
same direction.
If this indicator is not displaying,
ACC will not respond to or brake to
vehicles ahead.
ACC automatically slows the vehicle
down and adjusts vehicle speed to
follow the vehicle in front at the
selected following gap. The vehicle
speed increases or decreases to
follow the vehicle in front of you, but
will not exceed the set speed. It may
apply limited braking, if necessary.
When braking is active, the brake
lamps will come on. The automaticbraking may feel or sound different
than if the brakes were applied
manually. This is normal.
Stationary or Very Slow-Moving
Objects
{Warning
ACC may not detect and react to
stopped or slow-moving vehicles
ahead of you. For example, the
system may not brake for a
vehicle it has never detected
moving. This can occur in
stop-and-go traffic or when a
vehicle suddenly appears due to
a vehicle ahead changing lanes.
Your vehicle may not stop and
could cause a crash. Use caution
when using ACC. Your complete
attention is always required while
driving and you should be ready
to take action and apply the
brakes.
ACC Automatically Disengages
ACC may automatically disengage
and the driver will need to manually
apply the brakes to slow the
vehicle if:
.
The sensors are blocked.
. The Traction Control System
(TCS) or electronic stability
control system has activated or
been disabled.
. There is a fault in the system.
. A possible false detection of
radar blockage occurs when
driving in a desert or remote
area with no other vehicles or
roadside objects. A DIC
message may display to indicate
that ACC is temporarily
unavailable.
A message will appear on the DIC
indicating that cruise is disengaging.
The ACC indicator will turn white
when ACC is no longer active.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Vehicle Care 229
California Perchlorate
Materials Requirements
Certain types of automotive
applications, such as airbag
initiators, seat belt pretensioners,
and lithium batteries contained in
Remote Keyless Entry transmitters,
may contain perchlorate materials.
Special handling may be necessary.
For additional information, see
www.dtsc.ca.gov/hazardouswaste/
perchlorate.
Accessories and
Modifications
Adding non-dealer accessories or
making modifications to the vehicle
can affect vehicle performance and
safety, including such things as
airbags, braking, stability, ride and
handling, emissions systems,
aerodynamics, durability, and
electronic systems like antilock
brakes, traction control, and stability
control. These accessories or
modifications could even cause
malfunction or damage not covered
by the vehicle warranty.Damage to suspension components
caused by modifying vehicle height
outside of factory settings will not be
covered by the vehicle warranty.
Damage to vehicle components
resulting from modifications or the
installation or use of non-GM
certified parts, including control
module or software modifications, is
not covered under the terms of the
vehicle warranty and may affect
remaining warranty coverage for
affected parts.
GM Accessories are designed to
complement and function with other
systems on the vehicle. See your
dealer to accessorize the vehicle
using genuine GM Accessories
installed by a dealer technician.
Also, see
Adding Equipment to the
Airbag-Equipped Vehicle 079.
Vehicle Checks
Doing Your Own
Service Work
{Warning
It can be dangerous to work on
your vehicle if you do not have
the proper knowledge, service
manual, tools, or parts. Always
follow owner ’s manual procedures
and consult the service manual
for your vehicle before doing any
service work.
If doing some of your own service
work, use the proper service
manual. It tells you much more
about how to service the vehicle
than this manual can. To order the
proper service manual, see Service
Publications Ordering Information
0 334.
This vehicle has an airbag system.
Before attempting to do your own
service work, see Servicing the
Airbag-Equipped Vehicle 079.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
342 OnStar
from each other and use a
combination of letters, numbers,
and symbols to increase the
security.
. Change the default name of the
SSID (Service Set Identifier).
This is your network’s name that
is visible to other wireless
devices. Choose a unique name
and avoid family names or
vehicle descriptions.
OnStar Wi-Fi Hotspot (If Equipped)
The vehicle may have a built-in
Wi-Fi hotspot that provides access
to the Internet and web content at
4G LTE speed. Up to seven mobile
devices can be connected. A data
plan is required. Use the in-vehicle
controls only when it is safe to
do so. 1. To retrieve Wi-Fi hotspot information, press
=, wait for
the prompt, then say “Wi-Fi
settings.” On some vehicles,
touch Wi-Fi Settings on the
screen. 2. The Wi-Fi settings will display
the Wi-Fi hotspot name (SSID),
password, and on some
vehicles, the connection type
(no Internet connection, 3G,
4G, 4G LTE), and signal quality
(poor, good, excellent).
3. To change the SSID or password, press
Qor call
1-888-4ONSTAR to connect
with an Advisor.
After initial set-up, your vehicle’s
Wi-Fi hotspot will connect
automatically to your mobile
devices. Manage data usage by
turning Wi-Fi on or off on your
mobile device, using the myBuick
mobile app, or by contacting an
OnStar Advisor.
MyBuick Mobile App (If Available)
Download the myBuick mobile app
to compatible Apple and Android
smartphones. Buick users can
access the following services from a
smartphone:
. Remotely start/stop the vehicle,
if factory-equipped. .
Lock/unlock doors, if equipped
with automatic locks.
. Activate the horn and lamps.
. Check the vehicle’s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
. Send destinations to the vehicle.
. Locate the vehicle on a map
(U.S. market only).
. Turn the vehicle's Wi-Fi hotspot
on/off, manage settings, and
monitor data consumption,
if equipped.
. Locate a dealer and schedule
service.
. Request roadside assistance.
. Set a parking reminder with pin
drop, take a photo, make a note,
and set a timer.
. Connect with Buick on social
media.
For myBuick mobile app information
and compatibility, see my.buick.com.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
OnStar 345
Advanced Vehicle Diagnostics,
Remote Services, Roadside
Assistance, Turn-by-Turn
Navigation, and Hands-Free Calling
are available on most vehicles. Not
all OnStar services are available
everywhere or on all vehicles. For
more information, a full description
of OnStar services, system
limitations, and OnStar User Terms,
Privacy Statement, and Software
Terms:
.Call 1-888-4ONSTAR
(1-888-466-7827).
. See www.onstar.com (U.S.).
. See www.onstar.ca (Canada).
. Call TTY 1-877-248-2080.
. Press
Qto speak with an
Advisor.
OnStar services cannot work unless
the vehicle is in a place where
OnStar has an agreement with a
wireless service provider for service
in that area. The wireless service
provider must also have coverage,
network capacity, reception, and
technology compatible with 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
0 335.
Services for People with
Disabilities
Advisors provide services to help
Subscribers 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.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Index 355
IndicatorVehicle Ahead . . . . . . . . . . . . . . . . 121
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 82
Information Energy . . . . . . . . . . . . . . . . . . . . . . . 126
Infotainment . . . . . . . . . . . . . . . . . . . . 151
Infotainment System . . . . . . . . . . . . 338
Instrument Cluster . . . . . . . . . . . . . . 110
Interior Rearview Mirrors . . . . . . . . . 46
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North
America . . . . . . . . . . . . . . . . . . 293, 294
K
Keyless EntryRemote (RKE) System . . . . . . . . . 28
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
L
Labeling, Tire Sidewall . . . . . . . . . . 261
Lamps Daytime Running (DRL) . . . . . . 145
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 148
Exterior Controls . . . . . . . . . . . . . . 144
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 145 Lamps (cont'd)
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 150
License Plate . . . . . . . . . . . . . . . . . 252
Malfunction Indicator
(Check Engine) . . . . . . . . . . . . . .117
On Reminder . . . . . . . . . . . . . . . . . 124
Reading . . . . . . . . . . . . . . . . . . . . . . 148
Sun Visor . . . . . . . . . . . . . . . . . . . . . 149
Lane Change Alert (LCA) . . . . . . . 214
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 215
Lane Keep Assist (LKA) . . . . . . . . 216
Lane Keep Assist Light . . . . . . . . . 120
Lap-Shoulder Belt . . . . . . . . . . . . . . . 64
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . . . 94
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . 87
LED Lighting . . . . . . . . . . . . . . . . . . . . 251
Lighting Adaptive Forward . . . . . . . . . . . . . 146
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 149
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Illumination Control . . . . . . . . . . . 148
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 251 Lights
Adaptive Forward Lighting
(AFL) Light . . . . . . . . . . . . . . . . . . 124
Airbag Readiness . . . . . . . . . . . . . .115
Antilock Brake System (ABS) Warning . . . . . . . . . . . . . . 120
Brake System Warning . . . . . . . .119
Charging System . . . . . . . . . . . . . .117
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . .117
Cruise Control . . . . . . . . . . . . . . . . 125
Door Ajar . . . . . . . . . . . . . . . . . . . . . 125
Electric Parking Brake . . . . . . . . .119
Engine Coolant
Temperature Warning . . . . . . . 122
Engine Oil Pressure . . . . . . . . . . 123
Flash-to-Pass . . . . . . . . . . . . . . . . . 145
Front Fog Lamp . . . . . . . . . . . . . . 124
High-Beam On . . . . . . . . . . . . . . . . 124
High/Low Beam Changer . . . . . 145
Lane Keep Assist . . . . . . . . . . . . . 120
Low Fuel Warning . . . . . . . . . . . . 123
Seat Belt Reminders . . . . . . . . . . .115
Security . . . . . . . . . . . . . . . . . . . . . . 124
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . 120
StabiliTrak OFF . . . . . . . . . . . . . . . 121
Tire Pressure . . . . . . . . . . . . . . . . . 122
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
Index 357
Overheated EngineProtection Operating Mode . . . . 244
Overheating, Engine . . . . . . . . . . . . 243
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 176
Shifting Out of . . . . . . . . . . . . . . . . 177
Parking Extended . . . . . . . . . . . . . . . . . . . . . 179
Over Things That Burn . . . . . . . 179
Parking Assist . . . . . . . . . . . . . . . . . . 204
Parking or Backing
Assistance Systems . . . . . . . . . . 204
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 116
Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Passenger Sensing System . . . . . 75
Perchlorate Materials Requirements, California . . . . . . 229
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 133
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 38
Flows . . . . . . . . . . . . . . . . . . . . . . . . . 125
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Outlets . . . . . . . . . . . . . . . . . . . . . . . 106
Protection, Battery . . . . . . . . . . . . 150 Power (cont'd)
Retained Accessory (RAP) . . . 176
Seat Adjustment . . . . . . . . . . . . . . . . 53
Windows . . . . . . . . . . . . . . . . . . . . . . . 46
Pregnancy, Using Seat Belts . . . . 66
Privacy Vehicle Data Recording . . . . . . . 336
Program Courtesy Transportation . . . . . . 331
Proposition 65 Warning,
California . . . . . . . . . 228, 247, 293, 294,
Back Cover
R
Radio Frequency Statement . . . . 335
Reading Lamps . . . . . . . . . . . . . . . . . 148
Rear Seat Armrest . . . . . . . . . . . . . . . 61
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 59
Rear Vision Camera (RVC) . . . . . 204
Rear Window Sunshade . . . . . . . . . 49
Rearview Mirrors Automatic Dimming . . . . . . . . . . . . . 46
Reclining Seatbacks . . . . . . . . . . . . . 54
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 319
Records
Maintenance . . . . . . . . . . . . . . . . . . 321 Recreational Vehicle Towing . . . . 298
Reimbursement Program,
GM Mobility . . . . . . . . . . . . . . . . . . . 329
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . 28
Remote Vehicle Start . . . . . . . . . . . . 34
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 80
Maintenance . . . . . . . . . . . . . . . . . . 320
Replacing Airbag System . . . . . . . . 80
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . 94
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . 68
Reporting Safety Defects Canadian Government . . . . . . . . 336
General Motors . . . . . . . . . . . . . . . 336
U.S. Government . . . . . . . . . . . . . 335
Restraints Where to Put . . . . . . . . . . . . . . . . . . . 86
Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . 176
Reverse Tilt Mirrors . . . . . . . . . . . . . . 45
Ride Control Systems Selective . . . . . . . . . . . . . . . . . . . . . 192
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 163
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
358 Index
Roadside AssistanceProgram . . . . . . . . . . . . . . . . . . . . . . . 329
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 49
Rotation, Tires . . . . . . . . . . . . . . . . . . 272
Routing, Engine Drive Belt . . . . . . 324
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 180
S
Safety Defects ReportingCanadian Government . . . . . . . . 336
General Motors . . . . . . . . . . . . . . . 336
U.S. Government . . . . . . . . . . . . . 335
Safety Locks . . . . . . . . . . . . . . . . . . . . . 39
Safety System Check . . . . . . . . . . . . 67
Scheduling Appointments . . . . . . . 331
Sealant Kit, Tire . . . . . . . . . . . . . . . . 280
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 62 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Extender . . . . . . . . . . . . . . . . . . . . . . . . 67
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 63
Lap-Shoulder Belt . . . . . . . . . . . . . . 64
Reminders . . . . . . . . . . . . . . . . . . . . .115
Replacing after a Crash . . . . . . . . 68
Use During Pregnancy . . . . . . . . . . 66
Seats Head Restraints . . . . . . . . . . . . . . . . 52 Seats (cont'd)
Heated and Ventilated Front . . . . 58
Lumbar Adjustment, Front . . . . . . 54
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 55
Power Adjustment, Front . . . . . . . 53
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Reclining Seatbacks . . . . . . . . . . . . 54
Securing Child Restraints . . . . 94, 96
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 124
OnStar . . . . . . . . . . . . . . . . . . . . . . . 340
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 42
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 42
Selective Ride Control . . . . . . . . . . 192
Service . . . . . . . . . . . . . . . . . . . . . . . . . 158
Accessories andModifications . . . . . . . . . . . . . . . . 229
Doing Your Own Work . . . . . . . . 229
Maintenance Records . . . . . . . . 321
Maintenance, General
Information . . . . . . . . . . . . . . . . . . 310
Parts Identification Label . . . . . 322
Publications Ordering Information . . . . . . . . . . . . . . . . . . 334
Scheduling Appointments . . . . . 331
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . 120 Services
Special Application . . . . . . . . . . . 316
Servicing the Airbag . . . . . . . . . . . . . 79
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 176
Out of Park . . . . . . . . . . . . . . . . . . . 177
Side Blind Zone Alert (SBZA) . . . 213
Signals, Turn and
Lane-Change . . . . . . . . . . . . . . . . . 147
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . 292
Special Application Services . . . . 316
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 323
Speedometer . . . . . . . . . . . . . . . . . . . 112
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 121
Start Vehicle, Remote . . . . . . . . . . . 34
Starter Switch Check . . . . . . . . . . . 248
Starting the Engine . . . . . . . . . . . . . 172
Steering . . . . . . . . . . . . . . . . . . . . . . . . 162 Heated Wheel . . . . . . . . . . . . . . . . 104
Wheel Adjustment . . . . . . . . . . . . 104
Wheel Controls . . . . . . . . . . . . . . . 104
Stoplamps and Back-up Lamps
Bulb Replacement . . . . . . . . . . . . 251
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . 101
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-10999169) -
2018 - crc - 3/28/17
360 Index
Turn and Lane-ChangeSignals . . . . . . . . . . . . . . . . . . . . . . . . 147
Turn Signal Bulb Replacement . . . . . . . . . . . . 251
U
Uniform Tire Quality Grading . . . 276
Universal Remote System . . . . . . 140Operation . . . . . . . . . . . . . . . . . . . . . 142
Programming . . . . . . . . . . . . . . . . . 140
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 42
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 161
Identification Number (VIN) . . . 322
Load Limits . . . . . . . . . . . . . . . . . . . 166
Messages . . . . . . . . . . . . . . . . . . . . 132
Personalization . . . . . . . . . . . . . . . 133
Remote Start . . . . . . . . . . . . . . . . . . . 34
Security . . . . . . . . . . . . . . . . . . . . . . . . 42
Speed Messages . . . . . . . . . . . . . 133
Towing . . . . . . . . . . . . . . . . . . . . . . . . 297
Vehicle Ahead Indicator . . . . . . . . 121
Vehicle Care Storing the Tire Sealantand Compressor Kit . . . . . . . . . 287 Vehicle Care (cont'd)
Tire Pressure . . . . . . . . . . . . . . . . . 266
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 336
Vehicle Hold Automatic . . . . . . . . . . . . . . . . . . . . . 189
Vehicle Hold (AVH) Automatic . . . . . . . . . . . . . . . . . . . . . 189
Ventilation, Air . . . . . . . . . . . . . . . . . . 157
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
W
Warning Brake System Light . . . . . . . . . . . .119
Caution and Danger . . . . . . . . . . . . . 2
Lane Departure (LDW) . . . . . . . 215
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 109
Warnings
Hazard Flashers . . . . . . . . . . . . . . 146
Washer Fluid . . . . . . . . . . . . . . . . . . . 245
Wheels Alignment and Tire Balance . . 277
Different Size . . . . . . . . . . . . . . . . . 275
Replacement . . . . . . . . . . . . . . . . . 277
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Where to Put the Restraint . . . . . . 86
Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . 341 Windows . . . . . . . . . . . . . . . . . . . . . . . . 46
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Windshield Replacement . . . . . . . . . . . . . . . . . 249
Wiper/Washer . . . . . . . . . . . . . . . . 105
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 165
Winter Tires . . . . . . . . . . . . . . . . . . . . 260
Wiper Blade Replacement . . . . . . 249
Wireless Charging . . . . . . . . . . . . . . 108