2019 BUICK LACROSSE 138

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
218 Driving and Operating
.There is a problem with the
StabiliTrak/Electronic Stability
Control (ESC) system.
The FAB system does not need
service.
Front Pedestrian Braking
(FPB) System
If equipped, the FPB system may
help avoid or reduce the harm
caused by front-end crashes with
nearby pedestrians when driving in
a forward gear. FPB displays an
amber indicator,
~, when a nearby
pedestrian is detected directly
ahead. When approaching a
detected pedestrian too quickly,
FPB provides a red flashing alert on
the windshield and rapidly beeps or
pulses the driver seat. FPB can
provide a boost to braking or
automatically brake the vehicle. This
system includes Intelligent Brake
Assist (IBA), and the Forward
Automatic Braking (FAB) system
may also respond to pedestrians.
See Forward Automatic Braking
(FAB) 0216. The FPB system can detect and
alert to pedestrians in a forward
gear at speeds between 8 km/h
(5 mph) and 80 km/h (50 mph).
During daytime driving, the system
detects pedestrians up to a distance
of approximately 40 m (131 ft).
During nighttime driving, system
performance is very limited.
{Warning
FPB does not provide an alert or
automatically brake the vehicle,
unless it detects a pedestrian.
FPB may not detect pedestrians,
including children:
. When the pedestrian is not
directly ahead, fully visible,
or standing upright, or when
part of a group.
. Due to poor visibility,
including nighttime
conditions, fog, rain,
or snow.
. If the FPB sensor is blocked
by dirt, snow, or ice.
(Continued)
Warning (Continued)
.If the headlamps or
windshield are not cleaned
or in proper condition.
Be ready to take action and apply
the brakes. For more information,
see Defensive Driving 0166.
Keep the windshield, headlamps,
and FPB sensor clean and in
good repair.
FPB can be set to Off, Alert, or Alert
and Brake through vehicle
personalization. See “Collision/
Detection Systems” underVehicle
Personalization 0138.
Detecting the Pedestrian
Ahead

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Driving and Operating 219
FPB alerts and automatic braking
will not occur unless the FPB
system detects a pedestrian. When
a nearby pedestrian is detected
directly in front of the vehicle, the
pedestrian ahead indicator will
display amber.
Front Pedestrian Alert
When the vehicle approaches a
pedestrian ahead too rapidly, the
red FPB alert display will flash on
the windshield. Eight rapid
high-pitched beeps will sound from
the front, or both sides of the Safety
Alert Seat will pulse five times.
When this Pedestrian Alert occurs,
the brake system may prepare for
driver braking to occur more rapidly
which can cause a brief, mild
deceleration. Continue to apply thebrake pedal as needed. Cruise
control may be disengaged when
the Front Pedestrian Alert occurs.
Automatic Braking
If FPB detects it is about to crash
into a pedestrian directly ahead, and
the brakes have not been applied,
FPB may automatically brake
moderately or brake hard. This can
help to avoid some very low speed
pedestrian crashes or reduce
pedestrian injury. FPB can
automatically brake to detected
pedestrians between 8 km/h (5 mph)
and 80 km/h (50 mph). Automatic
braking levels may be reduced
under certain conditions, such as
higher speeds.
If this happens, Automatic Braking
may engage the Electric Parking
Brake (EPB) to hold the vehicle at a
stop. Release the EPB. A firm press
of the accelerator pedal will also
release Automatic Braking and
the EPB.
{Warning
FPB may alert or automatically
brake the vehicle suddenly in
situations where it is unexpected
and undesired. It could falsely
alert or brake for objects similar in
shape or size to pedestrians,
including shadows. This is normal
operation and the vehicle does
not need service. To override
Automatic Braking, firmly press
the accelerator pedal, if it is safe
to do so.
Automatic Braking can be disabled
through vehicle personalization. See
“Front Pedestrian Detection” in
“Collision/Detection Systems” under
Vehicle Personalization 0138.
{Warning
Using the Front Pedestrian
Braking system while towing a
trailer could cause you to lose
(Continued)

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Driving and Operating 221
Side Blind Zone Alert (SBZA)
warning area starts at approximately
the middle of the vehicle and goes
back 5 m (16 ft). Drivers are also
warned of vehicles rapidly
approaching from up to 70 m (230 ft)
behind the vehicle.
How the System Works
The LCA symbol lights up in the
side mirrors when the system
detects a moving vehicle in the next
lane over that is in the side blind
zone or rapidly approaching that
zone from behind. A lit LCA symbol
indicates it may be unsafe to
change lanes. Before making a lane
change, check the LCA display,
check mirrors, glance over your
shoulder, and use the turn signals.
Left Side MirrorDisplayRight Side Mirror Display When the vehicle is started, both
outside mirror LCA displays will
briefly come on to indicate the
system is operating. When the
vehicle is in a forward gear, the left
or right side mirror display will light
up if a moving vehicle is detected in
the next lane over in that blind zone
or rapidly approaching that zone.
If the turn signal is activated in the
same direction as a detected
vehicle, this display will flash as an
extra warning not to change lanes.
LCA can be disabled through
vehicle personalization using the
Lane Change Alert option. See
“Collision/Detection Systems”
under
Vehicle Personalization 0138.
If LCA is disabled by the driver, the
LCA mirror displays will not light up.
When the System Does Not
Seem to Work Properly
The LCA system requires some
driving for the system to calibrate to
maximum performance. This
calibration may occur more quickly if
the vehicle is driving on a straight highway road with traffic and
roadside objects (e.g., guardrails,
barriers).
LCA displays may not come on
when passing a vehicle quickly, for
a stopped vehicle, or when towing a
trailer. The LCA detection zones
that extend back from the side of
the vehicle do not move further back
when a trailer is towed. Use caution
while changing lanes when towing a
trailer. LCA may alert to objects
attached to the vehicle, such as a
trailer, bicycle, or object extending
out to either side of the vehicle.
Attached objects may also interfere
with the detection of vehicles. This
is normal system operation; the
vehicle does not need service.
LCA may not always alert the driver
to vehicles in the next lane over,
especially in wet conditions or when
driving on sharp curves. The system
does not need to be serviced. The
system may light up due to
guardrails, signs, trees, shrubs, and
other non-moving objects. This is
normal system operation; the
vehicle does not need service.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
364 Index
DrivingAssistance Systems . . . . . . . . . . 214
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . 227
Defensive . . . . . . . . . . . . . . . . . . . . . 166
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . 166
For Better Fuel Economy . . . . . . . 26
Hill and Mountain Roads . . . . . . 169
If the Vehicle is Stuck . . . . . . . . . 171
Loss of Control . . . . . . . . . . . . . . . 168
Off-Road Recovery . . . . . . . . . . . 168
Vehicle Load Limits . . . . . . . . . . . 172
Wet Roads . . . . . . . . . . . . . . . . . . . 169
Winter . . . . . . . . . . . . . . . . . . . . . . . . 170
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 157
E
Electric Parking Brake . . . . . . . . . . 193
Electric Parking Brake Light . . . . 125
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . . 233
Electrical System Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 261
Fuses and Circuit Breakers . . . 261
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 265 Electrical System (cont'd)
Overload . . . . . . . . . . . . . . . . . . . . . 260
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . 350
Energy Information . . . . . . . . . . . . . 131
Engine Air Cleaner/Filter . . . . . . . . . . . . . 245
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . 122
Compartment Overview . . . . . . . 238
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . .119
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 127
Cooling System . . . . . . . . . . . . . . . 246
Drive Belt Routing . . . . . . . . . . . . 334
Exhaust . . . . . . . . . . . . . . . . . . . . . . 186
Heater . . . . . . . . . . . . . . . . . . . . . . . . 180
Oil Life System . . . . . . . . . . . . . . . 244
Oil Pressure Light . . . . . . . . . . . . 128
Overheated Protection Operating Mode . . . . . . . . . . . . . 252
Overheating . . . . . . . . . . . . . . . . . . 250
Power Messages . . . . . . . . . . . . . 138
Running While Parked . . . . . . . . 186
Starting . . . . . . . . . . . . . . . . . . . . . . . 177
Engine Oil Temperature Gauge . . . . . . . . . . .118 Entry Lighting . . . . . . . . . . . . . . . . . . . 154
Equipment, Towing . . . . . . . . . . . . . 232
Event Data Recorders . . . . . . . . . . 347
Exit Lighting . . . . . . . . . . . . . . . . . . . . 154
Extended Parking . . . . . . . . . . . . . . . 185
Extender, Seat Belt . . . . . . . . . . . . . . 69
Exterior Lamp Controls . . . . . . . . . 149
Exterior Lamps Off Reminder . . . 150
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . 155
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter, Engine Air Cleaner . . . . . . . . . . . 245
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 150
Flashers, Hazard Warning . . . . . . 151
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 287
Changing . . . . . . . . . . . . . . . . . . . . . 296
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 317
Fluid
Automatic Transmission . . . . . . 245
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 254
Washer . . . . . . . . . . . . . . . . . . . . . . . 252
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 152
Folding Mirrors . . . . . . . . . . . . . . . . . . 46
Forward Automatic Braking . . . . . 216

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Index 367
Lights (cont'd)Flash-to-Pass . . . . . . . . . . . . . . . . . 150
Front Fog Lamp . . . . . . . . . . . . . . 130
High-Beam On . . . . . . . . . . . . . . . . 129
High/Low Beam Changer . . . . . 150
Lane Keep Assist . . . . . . . . . . . . . 126
Low Fuel Warning . . . . . . . . . . . . 129
Seat Belt Reminders . . . . . . . . . . 120
Security . . . . . . . . . . . . . . . . . . . . . . 129
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . 125
StabiliTrak OFF . . . . . . . . . . . . . . . 127
Tire Pressure . . . . . . . . . . . . . . . . . 128
Traction Control System (TCS)/StabiliTrak . . . . . . . . . . . . 127
Traction Off . . . . . . . . . . . . . . . . . . . 126
Locks Automatic Door . . . . . . . . . . . . . . . . . 39
Delayed Locking . . . . . . . . . . . . . . . . 39
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Lockout Protection . . . . . . . . . . . . . . 40
Power Door . . . . . . . . . . . . . . . . . . . . . 39
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Loss of Control . . . . . . . . . . . . . . . . . 168
Low Fuel Warning Light . . . . . . . . . 129
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . . 90 Lumbar Adjustment . . . . . . . . . . . . . . 55
Front Seats . . . . . . . . . . . . . . . . . . . . . 55
M
Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 331
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 326
Maintenance Schedule . . . . . . . . . 320 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . 329
Malfunction Indicator Lamp . . . . . 122
Manual Mode . . . . . . . . . . . . . . . . . . . 191
Massage . . . . . . . . . . . . . . . . . . . . . . . . 60
Memory Features . . . . . . . . . . . . . . . . 11
Memory Seats . . . . . . . . . . . . . . . . . . . 56
Messages
Engine Power . . . . . . . . . . . . . . . . 138
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 137
Vehicle Speed . . . . . . . . . . . . . . . . 138
Mirrors
Automatic Dimming . . . . . . . . . . . . . 46
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . . 47
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 45
Folding . . . . . . . . . . . . . . . . . . . . . . . . . 46
Heated . . . . . . . . . . . . . . . . . . . . . . . . . 46
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Mirrors (cont'd)
Tilt in Reverse . . . . . . . . . . . . . . . . . . 46
Mirrors, Interior Rearview . . . . . . . . 47
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 276
N
NavigationConnected Services . . . . . . . . . . 357
Net, Convenience . . . . . . . . . . . . . . 103
New Vehicle Break-In . . . . . . . . . . . 175
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 116
Off-Road
Recovery . . . . . . . . . . . . . . . . . . . . . 168
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 241
Engine Oil Life System . . . . . . . 244
Pressure Light . . . . . . . . . . . . . . . . 128
Older Children, Restraints . . . . . . . 83
Online Owner Center . . . . . . . . . . . 338
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . 348
OnStar Additional Information . . . . . . . . . . . . . . . . . . . . 351
OnStar Emergency . . . . . . . . . . . . . 350
OnStar Overview . . . . . . . . . . . . . . . 349
OnStar Security . . . . . . . . . . . . . . . . 351

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
368 Index
Operating ModeOverheated Engine
Protection . . . . . . . . . . . . . . . . . . . 252
Operation Fog Lamps . . . . . . . . . . . . . . . . . . . 152
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 108
Overheated Engine Protection Operating Mode . . . . 252
Overheating, Engine . . . . . . . . . . . . 250
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 182
Shifting Out of . . . . . . . . . . . . . . . . 182
Park Assist . . . . . . . . . . . . . . . . . . . . . 210
Parking Extended . . . . . . . . . . . . . . . . . . . . . 185
Over Things That Burn . . . . . . . 185
Parking or Backing Assistance Systems . . . . . . . . . . 210
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . 121
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Passenger Sensing System . . . . . 77
Perchlorate Materials
Requirements, California . . . . . . 236 Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 138
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 39
Flows . . . . . . . . . . . . . . . . . . . . . . . . . 131
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Outlets . . . . . . . . . . . . . . . . . . . . . . . 108
Protection, Battery . . . . . . . . . . . . 155
Retained Accessory (RAP) . . . 181
Seat Adjustment . . . . . . . . . . . . . . . . 54
Windows . . . . . . . . . . . . . . . . . . . . . . . 47
Pregnancy, Using Seat Belts . . . . 69
Privacy Vehicle Data Recording . . . . . . . 347
Program Courtesy Transportation . . . . . . 341
Prohibited Fuels . . . . . . . . . . . . . . . . 224
Proposition 65 Warning,
California . . . . . . . . . 235, 255, 301, 302,
Back Cover
Publication Ordering Information . . . . . . . . . . . . . . . . . . . . 344
R
Radio Frequency Statement . . . . 345
Reading Lamps . . . . . . . . . . . . . . . . . 153
Rear Seat Armrest . . . . . . . . . . . . . . . 63
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 61
Rear Vision Camera (RVC) . . . . . 210
Rear Window Sunshade . . . . . . . . . 50
Rearview MirrorsAutomatic Dimming . . . . . . . . . . . . . 47
Reclining Seatbacks . . . . . . . . . . . . . 55
Recommended
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 329
Records Maintenance . . . . . . . . . . . . . . . . . . 331
Recreational Vehicle Towing . . . . 306
Regenerative Braking . . . . . . . . . . . 196
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 339
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . 29
Remote Vehicle Start . . . . . . . . . . . . 35
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 83
Maintenance . . . . . . . . . . . . . . . . . . 330
Replacing Airbag System . . . . . . . . 83

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Index 371
Towing (cont'd)Recreational Vehicle . . . . . . . . . . 306
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 230
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 305
Traction Control System(TCS)/StabiliTrak Light . . . . . . 127
Off Light . . . . . . . . . . . . . . . . . . . . . . 126
Selective Ride Control . . . . . . . . 198
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . 196
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . 230
Transmission
Automatic . . . . . . . . . . . . . . . . . . . . . 187
Fluid, Automatic . . . . . . . . . . . . . . 245
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . 341
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . 152
Turn Signal Bulb Replacement . . . . . . . . . . . . 259U
Uniform Tire Quality Grading . . . 284
Universal Remote System . . . . . . 145
Operation . . . . . . . . . . . . . . . . . . . . . 148
Programming . . . . . . . . . . . . . . . . . 145
Using This Manual . . . . . . . . . . . . . . . . 2
V
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 43
Canadian Owners . . . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . 166
Identification Number (VIN) . . . 332
Load Limits . . . . . . . . . . . . . . . . . . . 172
Messages . . . . . . . . . . . . . . . . . . . . 137
Personalization . . . . . . . . . . . . . . . 138
Remote Start . . . . . . . . . . . . . . . . . . . 35
Security . . . . . . . . . . . . . . . . . . . . . . . . 43
Speed Messages . . . . . . . . . . . . . 138
Towing . . . . . . . . . . . . . . . . . . . . . . . . 305
Vehicle Ahead Indicator . . . . . . . . 126
Vehicle Care Storing the Tire Sealantand Compressor Kit . . . . . . . . . 295
Tire Pressure . . . . . . . . . . . . . . . . . 275
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . 347
Ventilation, Air . . . . . . . . . . . . . . . . . . 162 Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Voltmeter Gauge . . . . . . . . . . . . . . . 119
W
Warning
Brake System Light . . . . . . . . . . . 124
Caution and Danger . . . . . . . . . . . . . 2
Lane Departure (LDW) . . . . . . . 222
Warning Lights, Gauges, and Indicators . . . . . . . . . . . . . . . . . . . . . 113
Warnings Hazard Flashers . . . . . . . . . . . . . . 151
Washer Fluid . . . . . . . . . . . . . . . . . . . 252
Wheels Alignment and Tire Balance . . 286
Different Size . . . . . . . . . . . . . . . . . 284
Replacement . . . . . . . . . . . . . . . . . 286
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Where to Put the Restraint . . . . . . 89
Windows . . . . . . . . . . . . . . . . . . . . . . . . 47 Power . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Windshield Replacement . . . . . . . . . . . . . . . . . 257
Wiper/Washer . . . . . . . . . . . . . . . . 107
Winter
Driving . . . . . . . . . . . . . . . . . . . . . . . . 170
Winter Tires . . . . . . . . . . . . . . . . . . . . 269