service indicator BUICK LACROSSE 2019 Owner's Guide

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Driving and Operating 233
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector
(DLC) is used for vehicle service
and Emission Inspection/
Maintenance testing. See
Malfunction Indicator Lamp
(Check Engine Light)0122.
A device connected to the DLC —
such as an aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle
systems. This could affect vehicle
operation and cause a crash.
Such devices may also access
information stored in the vehicle’s
systems.
Caution
Some electrical equipment can
damage the vehicle or cause
components to not work and
would not be covered by the
vehicle warranty. Always check
with your dealer before adding
electrical equipment.
Add-on equipment can drain the
vehicle's 12-volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see
Servicing the Airbag-Equipped
Vehicle 081 and Adding Equipment
to the Airbag-Equipped Vehicle
0 81.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Vehicle Care 253
Caution (Continued)
.When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
. Fill the washer fluid tank
only three-quarters full when
it is very cold. This allows
for fluid expansion if
freezing occurs, which could
damage the tank if it is
completely full.
Brakes
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or can
be heard all the time when the
vehicle is moving, except when
applying the brake pedal firmly.
{Warning
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
Caution
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear and
evenly tighten wheel nuts in the proper sequence to torque
specifications. See
Capacities and
Specifications 0333.
Brake pads should be replaced as
complete sets.
Brake Pedal Travel
See your dealer if the brake pedal
does not return to normal height,
or if there is a rapid increase in
pedal travel. This could be a sign
that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts
with new, approved replacement
parts. If this is not done, the brakes
may not work properly. The braking
performance expected can change
in many other ways if the wrong
replacement brake parts are
installed or if parts are improperly
installed.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
280 Vehicle Care
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
0 176.
3. Make sure the Tire Pressure info page option is turned on.
The info pages on the DIC can
be turned on and off through
the Options menu. See Driver
Information Center (DIC) 0131.
4. Use the DIC controls on the right side of the steering wheel
to scroll to the Tire Pressure
screen under the DIC
info page. 5. Press and holdVin the center
of the DIC controls.
The horn sounds twice to
signal the receiver is in relearn
mode and the TIRE
LEARNING ACTIVE message
displays on the DIC screen.
6. Start with the driver side front tire.
7. Place the relearn tool against the tire sidewall, near the valve
stem. Then press the button to
activate the TPMS sensor.
A horn chirp confirms that the
sensor identification code has
been matched to this tire and
wheel position.
8. Proceed to the passenger side front tire, and repeat the
procedure in Step 7.
9. Proceed to the passenger side rear tire, and repeat the
procedure in Step 7.
10. Proceed to the driver side rear tire, and repeat the procedure
in Step 7. The horn sounds two
times to indicate the sensor identification code has been
matched to the driver side rear
tire, and the TPMS sensor
matching process is no longer
active. The TIRE LEARNING
ACTIVE message on the DIC
display screen goes off.
11. Turn the vehicle off.
12. Set all four tires to the recommended air pressure
level as indicated on the Tire
and Loading Information label.
Tire Inspection
We recommend that the tires,
including the spare tire, if the
vehicle has one, be inspected
for signs of wear or damage at
least once a month.
Replace the tire if:
.The indicators at three or
more places around the tire
can be seen.
.There is cord or fabric
showing through the tire's
rubber.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Service and Maintenance 327
Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage.
The brake lamps need to be
checked periodically to ensure
that they light when braking.
. With a multi-point inspection,
your dealer can check the lamps
and note any concerns.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
. Signs of wear may include
steering wheel vibration, bounce/
sway while braking, longer
stopping distance, or uneven
tire wear.
. As part of the multi-point
inspection, trained dealer
technicians can visually inspect
the shocks and struts for signs of leaking, blown seals,
or damage, and can advise
when service is needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel,
and can reduce the risk of tire
failure.
. Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord
or fabric showing through the
rubber; cracks or cuts in the
tread or sidewall; or a bulge or
split in the tire.
. Trained dealer technicians can
inspect and recommend the right
tires. Your dealer can also
provide tire/wheel balancing
services to ensure smooth
vehicle operation at all speeds.
Your dealer sells and services
name brand tires. Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For
information on how to clean and
protect the vehicle’s interior and
exterior, see
Interior Care 0313 and
Exterior Care 0309.
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver
optimal wear and performance.
. Signs that the alignment may
need to be adjusted include
pulling, improper vehicle
handling, or unusual tire wear.
. Your dealer has the required
equipment to ensure proper
wheel alignment.
Windshield
For safety, appearance, and the
best viewing, keep the windshield
clean and clear.
. Signs of damage include
scratches, cracks, and chips.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Index 365
Forward Collision Alert(FCA) System . . . . . . . . . . . . . . . . . 214
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . 345
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Front Pedestrian Braking
(FPB) System . . . . . . . . . . . . . . . . . 218
Front Seats Heated and Ventilated . . . . . . . . . . 59
Fuel
Additives . . . . . . . . . . . . . . . . . . . . . 225
Economy Driving . . . . . . . . . . . . . . . 26
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 227
Filling the Tank . . . . . . . . . . . . . . . 225
Foreign Countries . . . . . . . . . . . . 225
Gauge . . . . . . . . . . . . . . . . . . . . . . . . .117
Low Fuel Warning Light . . . . . . . 129
Management, Active . . . . . . . . . . 185
Prohibited Fuels . . . . . . . . . . . . . . 224
Recommended . . . . . . . . . . . . . . . 224
Top Tier . . . . . . . . . . . . . . . . . . . . . . 224
Fuses Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 261
Fuses and Circuit Breakers . . . 261 Fuses (cont'd)
Instrument Panel Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 265
G
Garage Door Opener . . . . . . . . . . . 145Programming . . . . . . . . . . . . . . . . . 145
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . 257
Gauges Driver Efficiency . . . . . . . . . . . . . . .118
Engine Coolant
Temperature . . . . . . . . . . . . . . . . .119
Engine Oil Temperature . . . . . . . .118
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . .117
Odometer . . . . . . . . . . . . . . . . . . . . . .116
Speedometer . . . . . . . . . . . . . . . . . .116
Tachometer . . . . . . . . . . . . . . . . . . . .116
Voltmeter . . . . . . . . . . . . . . . . . . . . . .119
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . .113
General Information Service and Maintenance . . . . . 318
Towing . . . . . . . . . . . . . . . . . . . . . . . . 227
Vehicle Care . . . . . . . . . . . . . . . . . . 235
Glove Box . . . . . . . . . . . . . . . . . . . . . . 102
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 339
H
Hazard Warning Flashers . . . . . . . 151
Head Restraints . . . . . . . . . . . . . . . . . 53
Head-up Display . . . . . . . . . . . . . . . . 134
HeadlampsAdaptive ForwardLighting (AFL) . . . . . . . . . . . . . . . 151
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 258
Automatic . . . . . . . . . . . . . . . . . . . . . 150
Bulb Replacement . . . . . . . . . . . . 258
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . 150
Flash-to-Pass . . . . . . . . . . . . . . . . . 150
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 258
High-Beam On Light . . . . . . . . . . 129
High/Low Beam Changer . . . . . 150
Lamps On Reminder . . . . . . . . . 130
Heated
Steering Wheel . . . . . . . . . . . . . . . 106
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Heated Mirrors . . . . . . . . . . . . . . . . . . . 46
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 180
Heating . . . . . . . . . . . . . . . . . . . . . . . . . 157
High-Beam On Light . . . . . . . . . . . . 129
High-Speed Operation . . . . . . . . . . 276

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