instrument panel BUICK LACROSSE 2015 Owner's Manual

Black plate (1,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
2015 Buick LaCrosse Owner ManualM
In Brief. . . . . . . . . . . . . . . . . . . . . . . . 1-1
Instrument Panel . . . . . . . . . . . . . . 1-2
Initial Drive Information . . . . . . . . 1-4
Vehicle Features . . . . . . . . . . . . . 1-15
eAssist Features . . . . . . . . . . . . . 1-19
Performance and
Maintenance . . . . . . . . . . . . . . . . 1-21
Keys, Doors, and Windows . . . . . . . . . . . . . . . . . . . . 2-1
Keys and Locks . . . . . . . . . . . . . . . 2-1
Doors . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Vehicle Security . . . . . . . . . . . . . . 2-15
Exterior Mirrors . . . . . . . . . . . . . . . 2-18
Interior Mirrors . . . . . . . . . . . . . . . . 2-19
Windows . . . . . . . . . . . . . . . . . . . . . 2-20
Roof . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Seats and Restraints . . . . . . . . . 3-1
Head Restraints . . . . . . . . . . . . . . . 3-2
Front Seats . . . . . . . . . . . . . . . . . . . . 3-4
Rear Seats . . . . . . . . . . . . . . . . . . . 3-11
Safety Belts . . . . . . . . . . . . . . . . . . 3-12
Airbag System . . . . . . . . . . . . . . . . 3-20
Child Restraints . . . . . . . . . . . . . . 3-33 Storage
. . . . . . . . . . . . . . . . . . . . . . . 4-1
Storage Compartments . . . . . . . . 4-1
Additional Storage Features . . . 4-3
Instruments and Controls . . . . 5-1
Controls . . . . . . . . . . . . . . . . . . . . . . . 5-2
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . 5-7
Information Displays . . . . . . . . . . 5-26
Vehicle Messages . . . . . . . . . . . . 5-35
Vehicle Personalization . . . . . . . 5-45
Universal Remote System . . . . 5-51
Lighting . . . . . . . . . . . . . . . . . . . . . . . 6-1
Exterior Lighting . . . . . . . . . . . . . . . 6-1
Interior Lighting . . . . . . . . . . . . . . . . 6-5
Lighting Features . . . . . . . . . . . . . . 6-6
Infotainment System . . . . . . . . . 7-1
Introduction . . . . . . . . . . . . . . . . . . . . 7-1 Climate Controls
. . . . . . . . . . . . . 8-1
Climate Control Systems . . . . . . 8-1
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-6
Maintenance . . . . . . . . . . . . . . . . . . . 8-6
Driving and Operating . . . . . . . . 9-1
Driving Information . . . . . . . . . . . . . 9-2
Starting and Operating . . . . . . . 9-14
Engine Exhaust . . . . . . . . . . . . . . 9-26
Automatic Transmission . . . . . . 9-27
Drive Systems . . . . . . . . . . . . . . . . 9-30
Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-30
Ride Control Systems . . . . . . . . 9-34
Cruise Control . . . . . . . . . . . . . . . . 9-37
Driver Assistance Systems . . . 9-47
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-58
Trailer Towing . . . . . . . . . . . . . . . . 9-63
Conversions and Add-Ons . . . 9-68

Black plate (1,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-1
In Brief
Instrument Panel
Instrument Panel . . . . . . . . . . . . . . 1-2
Initial Drive Information
Initial Drive Information . . . . . . . . 1-4
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 1-4
Remote Vehicle Start . . . . . . . . . 1-4
Door Locks . . . . . . . . . . . . . . . . . . . 1-5
Trunk Release . . . . . . . . . . . . . . . . 1-5
Windows . . . . . . . . . . . . . . . . . . . . . . 1-6
Seat Adjustment . . . . . . . . . . . . . . 1-6
Memory Features . . . . . . . . . . . . . 1-8
Heated and Ventilated Seats . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Head Restraint Adjustment . . . . 1-9
Safety Belts . . . . . . . . . . . . . . . . . . . 1-9
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . 1-10
Mirror Adjustment . . . . . . . . . . . . 1-10
Steering Wheel Adjustment . . . . . . . . . . . . . . . . . 1-11 Interior Lighting . . . . . . . . . . . . . . 1-11
Exterior Lighting . . . . . . . . . . . . . 1-12
Windshield Wiper/Washer . . . . 1-13
Climate Controls . . . . . . . . . . . . . 1-14
Transmission . . . . . . . . . . . . . . . . 1-14
Vehicle Features
Infotainment System . . . . . . . . . 1-15
Steering Wheel Controls . . . . . 1-15
Cruise Control . . . . . . . . . . . . . . . 1-15
Driver Information
Center (DIC) . . . . . . . . . . . . . . . 1-15
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . 1-16
Lane Departure Warning (LDW) . . . . . . . . . . . . . 1-16
Lane Change Alert (LCA) . . . . 1-16
Rear Vision
Camera (RVC) . . . . . . . . . . . . . 1-17
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . 1-17
Parking Assist . . . . . . . . . . . . . . . 1-17
Active Emergency Braking System . . . . . . . . . . . . . . . . . . . . . 1-17 Power Outlets . . . . . . . . . . . . . . . 1-17
Universal Remote System . . . 1-18
Sunroof . . . . . . . . . . . . . . . . . . . . . . 1-18
eAssist Features
eAssist®Overview . . . . . . . . . . . 1-19
High Voltage Safety Information . . . . . . . . . . . . . . . . . 1-20
Automatic Engine Start/Stop Feature . . . . . . . . . . . . . . . . . . . . . 1-20
Regenerative Braking . . . . . . . . 1-20
Battery . . . . . . . . . . . . . . . . . . . . . . . 1-21
Service . . . . . . . . . . . . . . . . . . . . . . 1-21
Performance and Maintenance
Traction Control/Electronic Stability Control . . . . . . . . . . . . 1-21
Tire Pressure Monitor . . . . . . . . 1-22
Engine Oil Life System . . . . . . 1-22
E85 or FlexFuel . . . . . . . . . . . . . . 1-23
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . 1-23
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . 1-23
OnStar
®. . . . . . . . . . . . . . . . . . . . . 1-23

Black plate (2,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
1-2 In Brief
Instrument Panel

Black plate (3,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-3
1.Exterior Lamp Controls on
page 6-1.
Fog Lamps on page 6-4 (If
Equipped).
Instrument Panel Illumination
Control on page 6-5.
Head-Up Display (HUD) on
page 5-31 (If Equipped).
2. Air Vents on page 8-6.
3. Turn Signal Lever. See Turn and
Lane-Change Signals on
page 6-4.
4. Instrument Cluster on page 5-8.
Driver Information Center
Display. See Driver Information
Center (DIC) on page 5-28.
5. Windshield Wiper/Washer on
page 5-3. 6.
Hazard Warning Flashers on
page 6-4.
Lane Departure Warning (LDW)
on page 9-57 (If Equipped).
Rear Parking Assist Button (If
Equipped). See Assistance
Systems for Parking or Backing
on page 9-48.
7. Light Sensor. See Automatic
Headlamp System on page 6-3.
8. Infotainment on page 7-1.
9. Data Link Connector (DLC) (Out of View). See Malfunction
Indicator Lamp on page 5-16.
10. Front Storage on page 4-2.
11. Hood Release. See Hood on
page 10-5.
12. Cruise Control on page 9-37.
Forward Collision Alert (FCA)
System on page 9-50 (If
Equipped).
13. Steering Wheel Adjustment on
page 5-2.
14. Horn on page 5-3. 15.
Steering Wheel Controls on
page 5-2 (If Equipped).
Driver Information Center (DIC)
Buttons. See Driver Information
Center (DIC) on page 5-28.
16. Ignition Positions (Key Access)
on page 9-15 orIgnition
Positions (Keyless Access) on
page 9-16.
17. Heated and Ventilated Front
Seats on page 3-9 (If
Equipped).
18. Shift Lever. See Automatic
Transmission on page 9-27.
19. Parking Brake on page 9-31.
Traction Control/Electronic
Stability Control on page 9-34.
20. Dual Automatic Climate Control
System on page 8-1.

Black plate (12,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
1-12 In Brief
Reading Lamps
There are front and rear reading
lamps.
The front reading lamps are in the
overhead console.
The rear reading lamps are in the
headliner.
#or$:Press to turn each lamp
on or off.
For more information, see Dome
Lamps on page 6-5.
Exterior Lighting
The exterior lamp control is on the
instrument panel on the outboard
side of the steering wheel.
Turn the control to the following
positions:
O: Turns off the exterior lamps.
The knob returns to the AUTO
position after it is released. Turn to
off again to reactivate the
AUTO mode.
AUTO: Automatically turns the
exterior lamps on and off,
depending on outside lighting.

Black plate (13,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-13
;:Turns on the parking lamps,
together with the sidemarker lamps,
taillamps, license plate lamps, and
instrument panel lights.
2: Turns on the headlamps,
together with the parking lamps,
sidemarker lamps, taillamps, license
plate lamps, and instrument panel
lights.
For more information, see:
.Exterior Lamp Controls on
page 6-1.
.Daytime Running Lamps (DRL)
on page 6-2.
.Fog Lamps on page 6-4.
Windshield Wiper/Washer
The windshield wiper/washer lever
is on the right side of the steering
column.
With the ignition in ACC/
ACCESSORY or ON/RUN/START,
move the lever to select the wiper
speed.
HI: Use for fast wipes.
LO: Use for slow wipes.
INT: Move the lever up to INT for
intermittent wipes, then turn the
x
INT band up for more frequent
wipes or down for less frequent
wipes.
OFF: Use to turn the wipers off.
1X : For a single wipe, briefly move
the lever down. For several wipes,
hold the lever down.
n L: Pull the lever toward you to
spray windshield washer fluid and
activate the wipers.
See Windshield Wiper/Washer on
page 5-3.

Black plate (13,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Keys, Doors, and Windows 2-13
Manual Safety Locks
If equipped, the safety lock is
located on the inside edge of the
rear doors. To use the safety lock:
1. Insert the key into the safety lockslot and turn it so the slot is in
the horizontal position.
2. Close the door.
3. Do the same for the other rear door. To open a rear door when the safety
lock is on:
1. Unlock the door by activating the
inside handle, by using the
power door lock switch, or by
using the Remote Keyless
Entry (RKE) transmitter.
2. Open the door from the outside.
To cancel the safety lock:
1. Unlock the door and open it from the outside.
2. Insert the key into the safety lock slot and turn it so the slot is in
the vertical position. Do the
same for the other door.
Doors
Trunk
{Warning
Exhaust gases can enter the
vehicle if it is driven with the
liftgate, trunk/hatch open, or with
any objects that pass through the
seal between the body and the
trunk/hatch or liftgate. Engine
exhaust contains carbon
monoxide (CO) which cannot be
seen or smelled. It can cause
unconsciousness and even death.
If the vehicle must be driven with
the liftgate, or trunk/hatch open:
.Close all of the windows.
.Fully open the air outlets on
or under the instrument
panel.
(Continued)

Black plate (15,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Keys, Doors, and Windows 2-15
There is an emergency trunk
release handle located inside the
trunk on the trunk latch. On some
vehicles, the release handle can be
accessed by folding the rear seat
center seatback. SeeRear Seats on
page 3-11. Pull the release handle
to open the trunk from the inside.
After use, return to the stored
position.
Vehicle Security
This vehicle has theft-deterrent
features; however, they do not make
the vehicle impossible to steal.
Vehicle Alarm System
This vehicle has an anti-theft alarm
system.
The indicator light, on the
instrument panel near the
windshield, indicates the status of
the system.
Off: Alarm system is disarmed. On Solid:
Vehicle is secured
during the delay to arm the system.
Fast Flash: Vehicle is unsecured.
A door, the hood, or the trunk
is open.
Slow Flash: Alarm system is
armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle in one of three ways:
.Use the RKE transmitter.
.Use the Keyless Access
system, if equipped.
.With a door open, pressQ
on the interior of the door.
3. After 30 seconds the alarm system will arm, and the
indicator light will begin to slowly
flash indicating the alarm system
is operating. Pressing
Qon the
RKE transmitter a second time

Black plate (13,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Seats and Restraints 3-13
Warning (Continued)
are more likely to be seriously
injured or killed. Do not allow
passengers to ride in any area of
the vehicle that is not equipped
with seats and safety belts.
Always wear a safety belt, and
check that all passenger(s) are
restrained properly too.
This vehicle has indicators as a
reminder to buckle the safety belts.
See Safety Belt Reminders on
page 5-14.
Why Safety Belts Work
When riding in a vehicle, you travel
as fast as the vehicle does. If the
vehicle stops suddenly, you keep
going until something stops you.
It could be the windshield, the
instrument panel, or the safety belts!
When you wear a safety belt, you
and the vehicle slow down together.
There is more time to stop because
you stop over a longer distance and,
when worn properly, your strongest
bones take the forces from the safety belts. That is why wearing
safety belts makes such good
sense.
Questions and Answers About
Safety Belts
Q: Will I be trapped in the vehicle
after a crash if I am wearing a
safety belt?
A: You could be—whether you are
wearing a safety belt or not.
Your chance of being conscious
during and after a crash, so you
can unbuckle and get out, is
much greater if you are belted.
Q: If my vehicle has airbags, why should I have to wear safety
belts?
A: Airbags are supplemental
systems only; so they work with
safety belts —not instead of
them. Whether or not an airbag
is provided, all occupants still
have to buckle up to get the
most protection.

Black plate (21,1)Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Seats and Restraints 3-21
All of the airbags have the word
AIRBAG embossed on the trim or
on a label near the deployment
opening.
For frontal airbags, the word
AIRBAG is on the center of the
steering wheel for the driver and on
the instrument panel for the front
outboard passenger.
For seat-mounted side impact
airbags, the word AIRBAG is on the
side of the seatback closest to
the door.
For roof-rail airbags, the word
AIRBAG is on the ceiling or trim.
Airbags are designed to supplement
the protection provided by safety
belts. Even though today's airbags
are also designed to help reduce
the risk of injury from the force of an
inflating bag, all airbags must inflate
very quickly to do their job.Here are the most important things
to know about the airbag system:
{Warning
You can be severely injured or
killed in a crash if you are not
wearing your safety belt, even
with airbags. Airbags are
designed to work with safety
belts, not replace them. Also,
airbags are not designed to inflate
in every crash. In some crashes
safety belts are the only restraint.
See
When Should an Airbag
Inflate? on page 3-23.
Wearing your safety belt during a
crash helps reduce the chance of
hitting things inside the vehicle or
being ejected from it. Airbags are
“supplemental restraints” to the
safety belts. Everyone in the
vehicle should wear a safety belt
properly, whether or not there is
an airbag for that person.
{Warning
Because airbags inflate with great
force and faster than the blink of
an eye, anyone who is up
against, or very close to any
airbag when it inflates can be
seriously injured or killed. Do not
sit unnecessarily close to any
airbag, as you would be if sitting
on the edge of the seat or leaning
forward. Safety belts help keep
you in position before and during
a crash. Always wear a safety
belt, even with airbags. The driver
should sit as far back as possible
while still maintaining control of
the vehicle.
Occupants should not lean on or
sleep against the door or side
windows in seating positions with
seat-mounted side impact airbags
and/or roof-rail airbags.