key BUICK LACROSSE 2019 Owner's Manual

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
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
8 In Brief
Initial Drive
Information
This section provides a brief
overview about some of the
important features that may or may
not be on your specific vehicle.
For more detailed information, refer
to each of the features which can be
found later in this owner’s manual.
Stop/Start System
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.
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.
See Stop/Start System (Without
eAssist) 0178 orStop/Start System
(With eAssist) 0179.
Remote Keyless Entry
(RKE) System
The Remote Keyless Entry (RKE)
transmitter may work up to 60 m
(197 ft) away from the vehicle.
Q:Press to lock all doors.
K:Press to unlock the driver door
or all doors.
Lock and unlock feedback can be
personalized. See Vehicle
Personalization 0138.
X:Press twice quickly to release
the trunk.
7: Press and release to initiate
vehicle locator. Press and hold for at
least three seconds to sound the
panic alarm. Press again to cancel
the panic alarm.
See Keys 028 and Remote Keyless
Entry (RKE) System Operation 029.
Remote Vehicle Start
The engine can be started from
outside of the vehicle.
Starting the Vehicle
1. Press and releaseQon the
RKE transmitter.
2. Immediately press and hold
/
for at least four seconds or until
the turn signal lamps flash.
Start the vehicle normally after
entering.
When the vehicle starts, the parking
lamps will turn on.
Remote start can be extended.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
In Brief 9
Canceling a Remote Start
To cancel a remote start, do one of
the following:
.Press and hold
/until the
parking lamps turn off.
. Turn on the hazard warning
flashers.
. Turn the vehicle on and then off.
See Remote Vehicle Start 035.
Door Locks
To lock or unlock the doors:
.
From inside the vehicle, use the
power door lock controls. Pull
once on the door handle to
unlock it, and a second time to
open it.
. From outside, press
QorKon
the Remote Keyless Entry (RKE)
transmitter, or use the key in the
door. The key cylinder is
covered with a cap. See Remote
Keyless Entry (RKE) System
Operation 029.
See Door Locks 037.
Power Door Locks
The power door lock controls are on
the front door panels.
K:Press to unlock all doors.
Q: Press to lock all doors.
See Power Door Locks 039.
Keyless Access
The RKE transmitter must be within
1 m (3 ft) of the door being opened.
Press the button on the door handle
to unlock. See Door Locks037.
Trunk Release
To open the trunk from outside the
vehicle, press
Xtwice quickly on
the Remote Keyless Entry (RKE)
transmitter.
Press the bottom of the emblem
above the license plate when all
doors are unlocked.
To open the trunk from inside the
vehicle, press
|on the driver
door when the vehicle is off or in
P (Park). See Trunk041.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
28 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . 29
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . 29
Remote Vehicle Start . . . . . . . . . . 35
Door Locks . . . . . . . . . . . . . . . . . . . . 37
Power Door Locks . . . . . . . . . . . . . 39
Delayed Locking . . . . . . . . . . . . . . . 39
Automatic Door Locks . . . . . . . . . 39
Lockout Protection . . . . . . . . . . . . . 40
Safety Locks . . . . . . . . . . . . . . . . . . . 40
Doors
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 43
Vehicle Alarm System . . . . . . . . . 43
Immobilizer . . . . . . . . . . . . . . . . . . . . 44
Immobilizer Operation . . . . . . . . . 44
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 45
Power Mirrors . . . . . . . . . . . . . . . . . . 45 Folding Mirrors . . . . . . . . . . . . . . . . . 46
Heated Mirrors . . . . . . . . . . . . . . . . . 46
Automatic Dimming Mirror . . . . . 46
Reverse Tilt Mirrors . . . . . . . . . . . . 46
Interior Mirrors
Interior Rearview Mirrors . . . . . . . 47
Automatic Dimming Rearview
Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 47
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 47
Power Windows . . . . . . . . . . . . . . . 47
Sun Visors . . . . . . . . . . . . . . . . . . . . . 49
Rear Window Sunshade . . . . . . . 50
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 50
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with
a Remote Keyless Entry (RKE)
transmitter is dangerous and
children or others could be
seriously injured or killed. They
could operate the power windows
or other controls or make the
vehicle move. The windows will
function with the RKE transmitter
in the vehicle, and children or
others could be caught in the path
of a closing window. Do not leave
children in a vehicle with an RKE
transmitter.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
Keys, Doors, and Windows 29
The vehicle has the keyless ignition.
The key can be used for the locks.
Press the button on the back of the
RKE transmitter to pull out the key.
Never pull the key out without
pressing the button.
If it becomes difficult to turn the key
in a vehicle lock, inspect the key
blade for debris. Periodically clean
with a brush or pick.
See your dealer if a new key is
needed.
Contact Roadside Assistance if
locked out of the vehicle. See
Roadside Assistance Program
0339.
With an active OnStar or connected
service plan, an OnStar Advisor
may remotely unlock the vehicle.
See OnStar Overview 0349.
Remote Keyless Entry
(RKE) System
See Radio Frequency Statement
0 345.
If there is a decrease in the Remote
Keyless Entry (RKE) operating
range: .
Check the distance. The
transmitter may be too far from
the vehicle.
. Check the location. Other
vehicles or objects may be
blocking the signal.
. Check the transmitter's battery.
See “Battery Replacement” later
in this section.
. If the transmitter is still not
working correctly, see your
dealer or a qualified technician
for service.
Remote Keyless Entry
(RKE) System Operation
The Keyless Access system allows
for vehicle entry when the Remote
Keyless Entry (RKE) transmitter is
within 1 m (3 ft). See “Keyless
Access Operation” later in this
section.
The RKE transmitter functions may
work up to 60 m (197 ft) away from
the vehicle.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
2019 - crc - 8/20/18
30 Keys, Doors, and Windows
Other conditions can impact the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System Operation029.
Q:Press to lock all doors.
The turn signal indicators may flash
and/or the horn may sound on the
second press to indicate locking.
See Vehicle Personalization 0138.
If the driver door is open when
Qis
pressed and Unlocked Door
Anti-Lockout is enabled, all doors will lock and then the driver door will
immediately unlock. See
Vehicle
Personalization 0138.
If the passenger door is open when
Qis pressed, all doors lock.
Pressing
Qmay also arm the
theft-deterrent system. See Vehicle
Alarm System 043.
K:Press to unlock the driver door.
Press again within five seconds to
unlock all doors. The RKE
transmitter can be programmed to
unlock all doors on the first button
press. See Vehicle Personalization
0 138.
The turn signal indicators may flash
to indicate unlocking. See Vehicle
Personalization 0138.
Pressing
Kwill disarm the
theft-deterrent system. See Vehicle
Alarm System 043.
Memory seat positions may be
recalled when unlocking the vehicle.
See Memory Seats 056 and
Vehicle Personalization 0138.
X:Press twice quickly to release
the trunk.
7: Press and release to initiate
vehicle locator. The exterior lamps
flash and the horn chirps three
times.
Press and hold
7for at least
three seconds to sound the panic
alarm. The horn sounds and the
turn signals flash for 30 seconds,
or until
7is pressed again or the
vehicle is started.
/: Press and releaseQand then
immediately press and hold
/for at
least four seconds to start the
engine from outside the vehicle
using the RKE transmitter. See
Remote Vehicle Start 035.
Keyless Access Operation
The Keyless Access system allows
for locking and unlocking the doors
and accessing the trunk without
removing the RKE transmitter from
your pocket, purse, briefcase, etc.
The RKE transmitter should be

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
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Keys, Doors, and Windows 31
within 1 m (3 ft) of the trunk or door
being opened. The buttons are on
the outside of the door handles.
Keyless Access can be
programmed to unlock all doors on
the first unlock/lock button press
from the driver door. SeeVehicle
Personalization 0138.
If equipped with memory seats, RKE
transmitters 1 and 2 are linked to
seating positions of memory 1 or 2.
See Memory Seats 056.
Keyless Unlocking/Locking from
the Driver Door
When the doors are locked and the
RKE transmitter is within 1 m (3 ft)
of the driver door handle, pressing
the lock/unlock button on the driver
door handle will unlock the driver
door. If the lock/unlock button is
pressed again within five seconds,
all passenger doors will unlock.
Pressing the lock/unlock button will
cause all doors to lock if any of the
following occur:
. It has been more than
five seconds since the first lock/
unlock button press.
. Two lock/unlock button presses
were used to unlock all doors.
. Any vehicle door has opened
and all doors are now closed. Keyless Unlocking/Locking from
Passenger Doors
When the doors are locked and the
RKE transmitter is within 1 m (3 ft)
of the door handle, pressing the
lock/unlock button on that door
handle will unlock all doors.
Pressing the lock/unlock button will
cause all doors to lock if any of the
following occur:
.
The lock/unlock button was used
to unlock all doors.
. Any vehicle door has opened
and all doors are now closed.
Passive Locking
With Keyless Access the vehicle will
lock several seconds after all doors
are closed if the vehicle is off and at
least one transmitter has been
removed or none remain in the
interior.
If other electronic devices interfere
with the RKE transmitter signal, the
vehicle may not detect the RKE
transmitter inside the vehicle.
If passive locking is enabled, the
doors may lock with the RKE

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
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32 Keys, Doors, and Windows
transmitter inside the vehicle. Do
not leave the RKE transmitter in an
unattended vehicle.
To customize the doors to
automatically lock when exiting the
vehicle, seeVehicle Personalization
0 138.
Temporary Disable of Passive
Locking
Temporarily disable passive locking
by pressing and holding
Kon the
interior door switch with a door open
for at least four seconds, or until
three chimes are heard. Passive
locking will then remain disabled
until
Qon the interior door is
pressed, or until the vehicle is
turned on.
Remote Left in Vehicle Alert
When the vehicle is turned off and
an RKE transmitter is left in the
vehicle, the horn will chirp three
times after all doors are closed. To
turn on or off see Vehicle
Personalization 0138. Remote No Longer in Vehicle Alert
If the vehicle is on with a door open
and then all doors are closed, the
vehicle will check for RKE
transmitters inside. If an RKE
transmitter is not detected, the
Driver Information Center (DIC) will
display NO REMOTE DETECTED
and the horn will chirp three times.
This occurs only once each time the
vehicle is driven.
See
Vehicle Personalization 0138.
Key Access
To access a vehicle with a weak
transmitter battery, see Door Locks
0 37.
Programming Transmitters to
the Vehicle
Only RKE transmitters programmed
to the vehicle will work. If a
transmitter is lost or stolen, a
replacement can be purchased and
programmed through your dealer.
The vehicle can be reprogrammed
so that lost or stolen transmitters no
longer work. Any remaining
transmitters will need to be reprogrammed. Each vehicle can
have up to eight transmitters
matched to it.
Programming with Recognized
Transmitters
A new transmitter can be
programmed to the vehicle when
there are two recognized
transmitters. To program, the vehicle
must be off and all of the
transmitters, both currently
recognized and new, must be
with you.
1. Place the two recognized transmitters in the cupholder.
2. Remove the key lock cylinder cap on the driver door handle.
See Door Locks 037.
3. Insert the vehicle key of the new transmitter into the key
lock cylinder on the outside of
the driver door and turn the key
to the unlock position five times
within 10 seconds.
The DIC displays READY FOR
REMOTE #2, 3, 4, or 5.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada-12032549) -
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Keys, Doors, and Windows 33
4. Place the new transmitter intothe transmitter pocket.
5. Press ENGINE START/STOP. When the transmitter is
learned, the DIC will show that
it is ready to program the next
transmitter.
6. Remove the transmitter from the transmitter pocket and
press
K.
To program additional
transmitters, repeat Steps 3–5. When all additional transmitters
are programmed, press and
hold ENGINE START/STOP for
12 seconds to exit
programming mode.
7. Put the key back into the transmitter.
8. Replace the key lock cylinder cap. See Door Locks 037.
Programming without Recognized
Transmitters
If two currently recognized
transmitters are not available, follow
this procedure to program up to
eight transmitters. This feature is
not available in Canada. This
procedure will take approximately
30 minutes to complete. The vehicle
must be off and all of the
transmitters you wish to program
must be with you. 1. Remove the key lock cylinder cap on the driver door handle.
See Door Locks 037.
2. Insert the vehicle key of the transmitter into the key lock
cylinder on the outside of the driver door and turn the key to
the unlock position five times
within 10 seconds.
The DIC displays REMOTE
LEARN PENDING,
PLEASE WAIT.
3. Wait for 10 minutes until the DIC displays PRESS ENGINE
START BUTTON TO LEARN
and then press ENGINE
START/STOP.
The DIC display will again
show REMOTE LEARN
PENDING, PLEASE WAIT.
4. Repeat Step 2 two additional times. After the third time, all
previously known transmitters
will no longer work with the
vehicle. Remaining transmitters
can be relearned during the
next steps.
The DIC should display
READY FOR REMOTE #1.