Page 8 of 374

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.
Page 180 of 374

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Driving and Operating 179
Auto Engine Stop/Start
When the brakes are applied and
the vehicle is at a complete stop,
the engine may turn off. When
stopped, the tachometer displays
AUTO STOP. SeeTachometer
0 116. When the brake pedal is
released or the accelerator pedal is
pressed, the engine will restart.
To maintain vehicle performance,
other conditions may cause the
engine to automatically restart
before the brake pedal is released.
Auto Stops may not occur and/or
auto restarts may occur because:
. The climate control settings
require the engine to be running
to cool or heat the vehicle
interior.
. The vehicle battery charge
is low.
. The vehicle battery has recently
been disconnected.
. Minimum vehicle speed has not
been reached since the last
Auto Stop .
The accelerator pedal is
pressed.
. The engine or transmission is
not at the required operating
temperature.
. The outside temperature is not
in the required operating range.
. The vehicle is in any gear other
than D (Drive).
. Tow/Haul Mode or other driver
modes have been selected.
. The vehicle is on a steep hill or
grade.
. The driver door has been
opened or driver seat belt has
been unbuckled.
. The hood has been opened.
. The Auto Stop has reached the
maximum allowed time.Stop/Start System (With
eAssist)
If equipped, the Stop/Start system
will shut off the engine to help
conserve fuel. It has components
designed for the increased number
of starts.
{Warning
The automatic engine Stop/Start
feature causes the engine to shut
off while the vehicle is still on. Do
not exit the vehicle before shifting
to P (Park). The vehicle may
restart and move unexpectedly.
Always shift to P (Park), and then
turn the ignition off before exiting
the vehicle.
Auto Engine Stop/Start
When the brakes are applied and
the vehicle is at a complete stop,
the engine may turn off. When
stopped, the tachometer displays
Page 181 of 374

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
180 Driving and Operating
AUTO STOP. SeeTachometer
0 116. When the brake pedal is
released or the accelerator pedal is
pressed, the engine will restart.
The vehicle may remain in Auto
Stop for up to two minutes.
The vehicle may remain in Auto
Stop even after it is shifted into
P (Park). If the driver opens the door
or unbuckles the seat belt the
vehicle will exit Auto Stop and
restart the engine.
To maintain vehicle performance,
other conditions may cause the
engine to automatically restart
before the brake pedal is released.
Auto Stops may not occur and/or
auto restarts may occur because:
. The engine, transmission or high
voltage battery is not at the
required operating temperature.
. The outside temperature is not
in the required operating range.
. The climate control settings
require the engine to be running
to cool or heat the vehicle
interior. .
The vehicle is in any gear other
than D (Drive) or P (Park).
. The vehicle battery charge
is low.
. The hood has been opened.
. The malfunction indicator lamp
is on.
. High humidity is detected.
. The brake pedal is released.
. The accelerator pedal is
pressed.
. The driver door has been
opened or driver seat belt has
been unbuckled.
. The engine has not run for
sufficient time since the prior
Auto Stop.
Engine Heater
The engine heater, if available, can
help in cold weather conditions at or
below −18 °C (0 °F) for easier
starting and better fuel economy
during engine warm-up. Plug in the
coolant heater at least four hours
before starting the vehicle. An internal thermostat in the plug end
of the cord will prevent engine
heater operation at temperatures
above
−18 °C (0 °F).
To Use the Engine Heater
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord.
The electrical cord is on the
driver side of the engine
compartment, between the
fender and the engine
compartment fuse block.
Page 238 of 374

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Vehicle Care 237
If equipped with remote vehicle
start, open the hood before
performing any service work to
prevent remote starting the vehicle
accidentally. SeeRemote Vehicle
Start 035.
Keep a record with all parts receipts
and list the mileage and the date of
any service work performed. See
Maintenance Records 0331.
Caution
Even small amounts of
contamination can cause damage
to vehicle systems. Do not allow
contaminants to contact the fluids,
reservoir caps, or dipsticks.
Hood
To open the hood:
1. Pull the interior hood release
handle located to the left of the
steering column below the
instrument panel.
2. Go to the front of the vehicleand push the secondary hood
release handle toward the
driver side of the vehicle.
3. Lift the hood.
To close the hood:
1. Before closing the hood, be sure all the filler caps are on
properly.
2. Lower the hood 30 cm (12 in) above the vehicle and release
it so it fully latches. Check to
make sure the hood is closed
and repeat the process if
necessary.
Page 330 of 374

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Service and Maintenance 329
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Automatic Transmission DEXRON-VI Automatic Transmission Fluid. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See Cooling System 0246.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity
grade. ACDelco dexos1 full synthetic is recommended. See Engine Oil
0 241.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and
Release Pawl Lubriplate Lubricant Aerosol (GM Part No. 89021668, in
Canada 89021674) or lubricant meeting requirements of NLGI #2,
Category LB or GC-LB.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in Canada 19353127).
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Weatherstrip Conditioning Weatherstrip lubricant (GM Part No. 3634770, in Canada 10953518) or equivalent.
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.