2016 BUICK LACROSSE Owner's Manual

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
24 In Brief
and the appropriate DIC
message is displayed. SeeRide
Control System
Messages 0136.
. Press and release the TCS/
StabiliTrak button to turn on both
systems.
See Traction Control/Electronic
Stability Control 0192.
Tire Pressure Monitor
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The low tire pressure warning light
alerts to a significant loss in
pressure of one of the vehicle's
tires. If the warning light comes on,
stop as soon as possible and inflate
the tires to the recommended
pressure shown on the Tire and
Loading Information label. See Vehicle Load Limits
0171. The
warning light will remain on until the
tire pressure is corrected.
The low tire pressure warning light
may come on in cool weather when
the vehicle is first started, and then
turn off as the vehicle is driven. This
may be an early indicator that the
tire pressures are getting low and
the tires need to be inflated to the
proper pressure.
The TPMS does not replace normal
monthly tire maintenance. Maintain
the correct tire pressures.
See Tire Pressure Monitor
System 0273.
Engine Oil Life System
The engine oil life system calculates
engine oil life based on vehicle use
and displays the CHANGE ENGINE
OIL SOON message when it is time
to change the engine oil and filter.
The oil life system should be reset
to 100% only following an oil
change. Resetting the Oil Life System
1. Using the DIC controls on the right side of the steering wheel,
display REMAINING OIL LIFE
on the DIC. See Driver
Information Center (DIC) 0123.
When remaining oil life is low,
the CHANGE ENGINE OIL
SOON message will appear on
the display. See Engine Oil
Messages 0133.
2. Press
Von the DIC controls
and hold down for a few
seconds to clear the CHANGE
ENGINE OIL SOON message
and reset the oil life at 100%.
Be careful not to reset the oil
life display accidentally at any
time other than after the oil is
changed. It cannot be reset
accurately until the next oil
change.
See Engine Oil Life System 0238.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
In Brief 25
E85 or FlexFuel
Vehicles with a yellow fuel cap can
use either unleaded gasoline or
ethanol fuel containing up to 85%
ethanol (E85). SeeE85 or FlexFuel
0 217. For all other vehicles, use
only the unleaded gasoline
described under Fuel0215.
Driving for Better Fuel
Economy
Driving habits can affect fuel
mileage. Here are some driving tips
to get the best fuel economy
possible.
.
Avoid fast starts and accelerate
smoothly.
. Brake gradually and avoid
abrupt stops.
. Avoid idling the engine for long
periods of time.
. When road and weather
conditions are appropriate, use
cruise control.
. Always follow posted speed
limits or drive more slowly when
conditions require. .
Keep vehicle tires properly
inflated.
. Combine several trips into a
single trip.
. Replace the vehicle's tires with
the same TPC Spec number
molded into the tire's sidewall
near the size.
. Follow recommended scheduled
maintenance.Roadside Assistance
Program
U.S.: 1-800-252-1112
TTY Users (U.S. Only):
1-888-889-2438
Canada: 1-800-268-6800
New Buick owners are automatically
enrolled in the Roadside Assistance
Program.
See Roadside Assistance
Program 0334.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
26 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . 28
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . 28
Remote Vehicle Start . . . . . . . . . . 34
Door Locks . . . . . . . . . . . . . . . . . . . . 35
Power Door Locks . . . . . . . . . . . . . 36
Delayed Locking . . . . . . . . . . . . . . . 36
Automatic Door Locks . . . . . . . . . 37
Lockout Protection . . . . . . . . . . . . . 37
Safety Locks . . . . . . . . . . . . . . . . . . . 37
Doors
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 40
Vehicle Alarm System . . . . . . . . . 40
Immobilizer . . . . . . . . . . . . . . . . . . . . 41
Immobilizer Operation (Key Access) . . . . . . . . . . . . . . . . . . . . . . 41
Immobilizer Operation (Keyless Access) . . . . . . . . . . . . . . . . . . . . . . 42
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 43
Power Mirrors . . . . . . . . . . . . . . . . . . 43
Folding Mirrors . . . . . . . . . . . . . . . . . 44
Heated Mirrors . . . . . . . . . . . . . . . . . 44
Reverse Tilt Mirrors . . . . . . . . . . . . 44
Interior Mirrors
Interior Rearview Mirrors . . . . . . . 44
Manual Rearview Mirror . . . . . . . . 44
Automatic Dimming RearviewMirror . . . . . . . . . . . . . . . . . . . . . . . . . 45
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 45
Power Windows . . . . . . . . . . . . . . . 45
Sun Visors . . . . . . . . . . . . . . . . . . . . . 47
Rear Window Sunshade . . . . . . . 47
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 47
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with
an ignition key or Remote
Keyless Entry (RKE) transmitter is
dangerous and children or others
could be seriously injured or
killed. They could operate the
power window or other controls or
make the vehicle move. The
windows will function with the key
in the ignition or 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 the ignition key or an RKE
transmitter.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
Keys, Doors, and Windows 27
{Warning
If the key is unintentionally
rotated while the vehicle is
running, the ignition could be
moved out of the RUN position.
This could be caused by heavy
items hanging from the key ring,
or by large or long items attached
to the key ring that could be
contacted by the driver or
steering wheel. If the ignition
moves out of the RUN position,
the engine will shut off, braking
and steering power assist may be(Continued)
Warning (Continued)
impacted, and airbags may not
deploy. To reduce the risk of
unintentional rotation of the
ignition key, do not change the
way the ignition key and Remote
Keyless Entry (RKE) transmitter,
if equipped, are connected to the
provided key rings.
If the vehicle is equipped with a
keyed ignition, the ignition key, key
rings, and RKE transmitter,
if equipped, are designed to work
together. As a system, it reduces
the risk of unintentionally moving
the key out of the RUN position.
If replacements or additions are
required, see your dealer. Limit
added items to a few essential keys
or small, light items no larger than
an RKE transmitter.
Interference from radio-frequency
identification (RFID) tags may
prevent the key from starting the
vehicle. Keep RFID tags away from
the key when starting the vehicle.
The key that is part of the RKE
transmitter can be used for the
ignition and all locks if the vehicle is
a key access vehicle. If the vehicle
has the keyless ignition, the key can
be used for the locks.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
28 Keys, Doors, and Windows
Press the button on the RKE
transmitter to extend the key. Press
the button and the key blade to
retract the key.
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.
If locked out of the vehicle, see
Roadside Assistance
Program0334. With an active OnStar subscription,
an OnStar Advisor may remotely
unlock the vehicle. See
OnStar
Overview 0345.
Remote Keyless Entry
(RKE) System
See Radio Frequency
Statement 0341.
If there is a decrease in the 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
transmitter is within range. See
“Keyless Access Operation” later in
this section.
The transmitter functions may work
up to 60 m (197 ft) away from the
vehicle.
Other conditions can impact the
performance of the transmitter.
Q(Lock) : Press to lock all doors.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
Keys, Doors, and Windows 29
The turn signal indicators may flash
and/or the horn may sound on the
second press to indicate locking.
SeeVehicle Personalization 0139.
If the driver door is open when
Qis
pressed, all doors lock except the
driver door, if enabled through the
vehicle personalization.
If the passenger door is open when
Qis pressed, all doors lock.
Pressing
Qmay also arm the
theft-deterrent system. See Vehicle
Alarm System 040.
K(Unlock) : Press to unlock the
driver door or all doors. See Vehicle
Personalization 0139.
The turn signal indicators may flash
to indicate unlocking. See Vehicle
Personalization 0139.
Pressing
Kwill disarm the
theft-deterrent system. See Vehicle
Alarm System 040.
Y(Remote Trunk Release) :
Press and hold to release the trunk.
7(Vehicle Locator/Panic
Alarm) : 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 until
7is pressed
again or the vehicle is started.
/(Remote Vehicle Start) :
If equipped, press
Qand release
and 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 034.
The RKE transmitter buttons will not
operate when the key is in the
ignition.
Keyless Access Operation
If equipped with a Keyless Access
system, it 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 within 1 m (3 ft) of the
door or trunk being opened. If the
vehicle has this feature, there will be
buttons 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. See
Vehicle
Personalization 0139.
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.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
30 Keys, Doors, and Windows
Driver Side Shown, PassengerSimilar
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
If equipped 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 transmitter inside the vehicle. Do
not leave the RKE transmitter in an
unattended vehicle.
Temporary Disable of Passive
Locking Feature
Temporarily disable the passive
locking by pressing and holding
K
on 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.
To customize the doors to
automatically lock when exiting the
vehicle, see Vehicle
Personalization 0139.
Keyless Trunk Opening
Lift up on the touch pad above the
license plate to open the trunk if the
RKE transmitter is within 1 m (3 ft).

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
Keys, Doors, and Windows 31
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 a Recognized
Transmitter (Key Vehicles Only)
To program a new key:1. Insert the original, already programmed key in the ignition
and turn the key to the ON/
RUN position.
2. Turn the key to LOCK/OFF and remove the key.
3. Insert the new key to be programmed and turn it to the
ON/RUN position within
five seconds. The security light will turn off
once the key has been
programmed.
4. Repeat Steps 1–3 if additional keys are to be programmed.
If a key is lost or damaged, see your
dealer to have a new key made.
Programming without a
Recognized Transmitter (Key
Vehicles Only)
Program a new key to the vehicle
when a recognized key is not
available. Canadian regulations
require that owners see their dealer.
If there are no currently recognized
keys available, follow this procedure
to program the first key.
This procedure will take
approximately 30 minutes to
complete for the first key. The
vehicle must be off and all of the
keys you wish to program must be
with you.
1. Insert the new vehicle key into the ignition.
2. Turn to ON/RUN. The security light will come on. 3. Wait 10 minutes until the
security light turns off.
4. Turn the ignition to LOCK/OFF.
5. Repeat Steps 2–4 two more times. After the third time, turn
to ON/RUN; the key is learned
and all previously known keys
will no longer work with the
vehicle.
Remaining keys can be learned by
following the procedure in
“Programming with a Recognized
Transmitter (Key Vehicles Only).”
Programming with a Recognized
Transmitter (Keyless Access
Vehicles Only)
A new transmitter can be
programmed to the vehicle when
there is one recognized transmitter.
To program, the vehicle must be off
and all of the transmitters, both
currently recognized and new, must
be with you. 1. Place the recognized transmitter(s) in the cupholder.