BUICK LACROSSE 2016 Owner's Guide

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
20 In Brief
change to amber and flash. In
addition, beeps will sound or the
driver seat will pulse.
SeeLane Departure Warning
(LDW) 0213.
Lane Change Alert (LCA)
If equipped, the LCA system is a
lane-changing aid that assists
drivers with avoiding lane change
crashes that occur with moving
vehicles in the side blind zone (or
spot) areas or with vehicles rapidly
approaching these areas from
behind. The LCA warning display
will light up in the corresponding
outside side mirror and will flash if
the turn signal is on. The Side Blind
Zone Alert (SBZA) system is
included as part of the LCA system.
See Side Blind Zone Alert (SBZA)
0 211 and Lane Change Alert
(LCA) 0211.
Rear Vision
Camera (RVC)
If equipped, RVC displays a view of
the area behind the vehicle on the
center stack display when the
vehicle is shifted into R (Reverse) to
aid with parking and low-speed
backing maneuvers.
See Assistance Systems for Parking
or Backing 0205.
Rear Cross Traffic Alert
(RCTA) System
If equipped, the RCTA system uses
a triangle with an arrow displayed
on the RVC screen to warn of traffic
behind your vehicle that may cross
your vehicle's path while in
R (Reverse). In addition, beeps will
sound, or the driver seat will pulse.
See Assistance Systems for Parking
or Backing 0205.
Parking Assist
If equipped, Rear Parking Assist
(RPA) uses sensors on the rear
bumper to assist with parking and avoiding objects while in
R (Reverse). It operates at speeds
less than 8 km/h (5 mph). RPA may
display a warning triangle on the
Rear Vision Camera screen and/or
a graphic on the instrument cluster
to provide the object distance. In
addition, multiple beeps may occur
if very close to an object.
See
Assistance Systems for Parking
or Backing 0205.
Power Outlets
The accessory power outlets can be
used to plug in electrical equipment,
such as a cell phone or MP3 player.
There are two accessory power
outlets: one under the armrest
inside the center console storage,
and one on the rear of the center
floor console.
Open the protective cover to use the
accessory power outlet.
See Power Outlets 0103.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
In Brief 21
Universal Remote System
If equipped, these buttons in the
overhead console provide a way to
replace up to three remote control
transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices.
Read the instructions completely
before attempting to program the
Universal Remote system. Because
of the steps involved, it may be
helpful to have another person
available to assist with programming
the Universal Remote system.See
Universal Remote
System 0145.
Sunroof
On vehicles with a sunroof, the
switches are located on the
overhead console.
The ignition must be in ON/RUN or
ACC/ACCESSORY, or Retained
Accessory Power (RAP) must be
active. See Retained Accessory
Power (RAP) 0183. Vent :
Press the rear of the
switch (2) to the first detent to vent
the sunroof. Press the front of the
switch (1) to the second detent to
close the sunroof.
Express-open/Express-close : To
express-open the sunroof, fully
press and release the rear of the
switch (2). To express-close, fully
press and release the front of the
switch (1). To stop the sunroof
partway, press either switch a
second time.
The sunshade opens automatically
with the sunroof.
To express-open the sunshade, fully
press and release the rear of the
switch (3). To stop the sunshade
partway, press the switch a second
time. To express-close, fully press
and release the front of the
switch (4). To stop the sunshade
partway, press the switch a
second time.
See Sunroof 047.

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9159288) - 2016 - CRC - 10/5/15
22 In Brief
eAssist Features
eAssist®Overview
If the vehicle has eAssist, there are
several additional features that
contribute to increased efficiency.
Vehicles with eAssist have an
automatic engine start/stop feature.
This feature saves fuel by shutting
the engine off when the vehicle is
stopped. When the engine shuts off
automatically, all the accessories
will continue to operate normally. In
very hot or cold conditions, the
engine may not shut off. See
Starting the Engine0178.
There are two air conditioning
settings available. The comfort
setting maximizes cabin comfort.
The eco setting maximizes
efficiency allowing more frequent,
and longer engine stops than the
comfort setting. See Dual Automatic
Climate Control System 0157. This vehicle has a Hill Start Assist
(HSA) feature, which may be useful
when the vehicle is stopped on a
grade. See
Hill Start Assist
(HSA) 0192.
Vehicles with eAssist include an
AUTO STOP indicator on the
tachometer. See Instrument
Cluster 0106.
The eAssist system uses a high
voltage battery, which is cooled with
air drawn from the vehicle interior.
The cold air intake for the battery is
located behind the rear seat, on the
filler panel. Do not cover the intake.
See Battery - North America 0250.
High Voltage Safety
Information
Vehicles with eAssist have a
standard 12-volt battery and a high
voltage battery. Only a trained
service technician with the proper
knowledge and tools should inspect,
test, or replace the high voltage
battery. See your dealer if the high
voltage battery needs service.
In emergency situations, first
responders can cut the two clearly
labeled cut points in the engine
compartment to disable the high
voltage battery and air bag systems.
Do not cut the high voltage cable.
Automatic Engine Start/
Stop Feature
Vehicles with eAssist have an
automatic engine start/stop feature.
After the engine is started and has
reached operating temperature, the
auto stop feature may cause the
engine to turn off when the brake
pedal is applied and the vehicle
comes to a complete stop. When
the brake pedal is released, or the

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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In Brief 23
accelerator pedal is applied, the
engine will restart. The engine will
continue to run until the next
auto stop.
AUTO STOP on the tachometer
signifies that the engine is in auto
stop mode. SeeTachometer0109
for more information. A chime will
sound when the driver door is
opened while in auto stop mode.
Remember to shift to P (Park) and
turn the ignition to LOCK/OFF
before exiting the vehicle.
See Starting the Engine 0178.
Regenerative Braking
Regenerative braking takes some of
the energy from the moving vehicle
and turns it into electrical energy.
This energy is then stored in the
vehicle's high voltage battery
system, contributing to increased
fuel efficiency.
The system works whenever the
accelerator pedal is released, and
increases the energy captured as
more brake pedal is applied.
Battery
This vehicle has a standard 12-volt
battery. Refer to the replacement
number on the original battery label
when a new standard 12-volt battery
is needed.
Vehicles with eAssist also have a
high voltage battery. Only a trained
service technician with the proper
knowledge and tools should inspect,
test, or replace the high voltage
battery. See your dealer if the high
voltage battery needs service. See
Battery - North America 0250.
Service
Never try to do your own service on
eAssist components. You can be
injured and the vehicle can be
damaged if you try to do your own
service work. Service and repair of
these high voltage components
should only be performed by a
trained service technician with the
proper knowledge and tools. See
Doing Your Own Service
Work 0229.
Performance and
Maintenance
Traction Control/
Electronic Stability
Control
The traction control system limits
wheel spin. The system turns on
automatically every time the vehicle
is started.
.
To turn off traction control, press
and release the Traction Control
System (TCS)/StabiliTrak button
on the center console behind the
shift lever.
iilluminates and the
appropriate DIC message is
displayed. See Ride Control
System Messages 0136.
. Press and release the TCS/
StabiliTrak button again to turn
on traction control.
. To turn off both TCS and
StabiliTrak, press and hold the
TCS/StabiliTrak button on the
center console behind the shift
lever, until
iandgilluminate

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-
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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-
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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-
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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.