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LaCrosse 2015
Owner's Manual
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Buick LaCrosse 2015 Owner's Manual

Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
2015 Buick LaCrosse Owner Manual M
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
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
2015 Buick LaCrosse Owner Manual M
Vehicle Care . . . . . .. . . . . . . . .. . 10-1
General Information . . . . . . . . . .10-2
Vehicle Checks.. . . . . . . . . . . . . . 10-4
Headlamp Aiming . . . . . . . . . . . 10-31
Bulb Replacement . . . . . . . . . . 10-31
Electrical System . . . . . . . . . . . . 10-34
Wheels and Tires . . . . . . . . . . . 10-42
Jump Starting . . . . . . . . . . . . . . . 10-78
Towing the Vehicle . . . . . . . . . . 10-82
Appearance Care . . . . . . . . . . .10-85
Service and Maintenance . . . 11-1
General Information . . . . . . . . . . 11-1
Maintenance Schedule . . . . . . .11-2
Special Application
Services . . . . . . . . . . . . . . . . . . . . 11-8
Additional Maintenance
and Care . . . . . . . . .. . . . . . . . . . . 11-8
Recommended Fluids,
Lubricants, and Parts . . . . . . 11-12
Maintenance Records . . . . . . . 11-14
Technical Data . . . . . . ......... 12-1
Vehicle Identification.. . . . . . . . 12-1
Vehicle Data. . . . . . . . . . . . . . . . . . 12-2
Customer Information . . . . . . . 13-1
Customer Information . . . . . . . . 13-1
Reporting Safety Defects . . . . 13-12
Vehicle Data Recording and
Privacy . . .. . . . . . . . . . . . . . . . . 13-14
OnStar . . . . . . . . . . . . . . .. . . . . . . . 14-1
OnStar Overview.. . . . . . . . . . . . 14-1
OnStar Services . . . . . . . .. . . . . . 14-2
OnStar Additional
Information . . . . . . . . . . . . ... . . . 14-6
Index . . . . . . . . . . . . . . . . . . . . . i-1
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14

Introduction iii

This manual describes features that may or may not be on the vehicle because of optional equipment that was not purchased on the vehicle, model variants, country specifications, features/applications
The names, logos, emblems, slogans, vehicle model names, and vehicle body designs appearing in this manual including, but not limited to, GM, the GM logo, BUICK, the BUICK Emblem, and LACROSSE are trademarks and/or service marks of General Motors LLC, its subsidiaries, affiliates, or licensors.
For vehicles first sold in Canada, substitute the name “General Motors of Canada Limited” for Buick Motor Division wherever it appears in this manual.
Litho in U.S.A. Part No. 22941405 B Second Printing
that may not be available in your region, or changes subsequent to the printing of this owner manual.
Refer to the purchase documentation relating to your specific vehicle to confirm the features.
Keep this manual in the vehicle for quick reference.

Canadian Vehicle Owners

Propriétaires Canadiens
A French language manual can be obtained from your dealer, at www.helminc.com, or from:
On peut obtenir un exemplaire de ce guide en français auprès du concessionnaire ou à l'adresse savant:
Helm, Incorporated Attention: Customer Service 47911 Halyard Drive Plymouth, MI 48170

Using this Manual

To quickly locate information about the vehicle, use the Index in the back of the manual. It is an alphabetical list of what is in the manual and the page number where it can be found.
©
2014 General Motors LLC. All Rights Reserved.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
iv Introduction

Danger, Warnings, and Cautions

Warning messages found on vehicle labels and in this manual describe hazards and what to do to avoid or reduce them.
Danger
{
Danger indicates a hazard with a high level of risk which will result in serious injury or death.
Warning
{
Warning indicates a hazard that could result in injury or death.
Caution indicates a hazard that could result in property or vehicle damage.
A circle with a slash through it is a safety symbol which means “Do Not,” “Do not do this,” or “Do not let this happen.”
{
Caution

Symbols

The vehicle has components and labels that use symbols instead of text. Symbols are shown along with the text describing the operation or information relating to a specific component, control, message, gauge, or indicator.
M : This symbol is shown when
you need to see your owner manual for additional instructions or information.
* : This symbol is shown when
you need to see a service manual for additional instructions or information.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
Introduction v
Vehicle Symbol Chart
Here are some additional symbols that may be found on the vehicle and what they mean. For more information on the symbol, refer to the Index.
9 : Airbag Readiness Light # : Air Conditioning ! : Antilock Brake System (ABS) g : Audio Steering Wheel Controls
or OnStar
®
(if equipped)
$ : Brake System Warning Light " : Charging System
I : Cruise Control
B : Engine Coolant Temperature
O : Exterior Lamps
g : First Responder
# : Fog Lamps
. : Fuel Gauge
+ : Fuses
3 : Headlamp High/Low-Beam
Changer
( : Heated Steering Wheel j : LATCH System Child
Restraints
* : Malfunction Indicator Lamp : : Oil Pressure O : Power
/ : Remote Vehicle Start
> : Safety Belt Reminders
7 : Tire Pressure Monitor
d : Traction Control/StabiliTrak
®
M : Windshield Washer Fluid
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
vi Introduction
2 NOTES
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
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
1-2 In Brief

Instrument Panel

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 or Ignition 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.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
1-4 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 manual.

Remote Keyless Entry (RKE) System

The RKE transmitter may work up to 60 m (197 ft) away from the vehicle.
With Remote Start Shown
Press the button to extend the key. The key can be used for all locks. This key is also used for the ignition, if the vehicle does not have pushbutton start.
K : Press to unlock the driver door
or all doors.
Q : Press to lock all doors.
Lock and unlock feedback can be personalized.
Y : Press and hold 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 on page 2-1 and Remote
Keyless Entry (RKE) System Operation on page 2-3.

Remote Vehicle Start

For vehicles with this feature, the engine can be started from outside the vehicle.
Starting the Vehicle
1. Aim the RKE transmitter at the vehicle.
2. Press and release
3. Immediately after completing Step 2, press and hold
least four seconds or until the turn signal lamps flash.
Q.
/ for at
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-5
When the engine starts, the parking lamps will turn on and remain on as long as the engine is running. The doors will be locked and the climate control system may come on.
The engine will continue to run for 10 minutes. After 30 seconds, repeat the steps if a 10-minute time extension is desired. Remote start can be extended only once.
Canceling a Remote Start
To cancel a remote start, do one of the following:
.
Aim the RKE transmitter at the vehicle and press and hold
until the parking lamps turn off.
.
Turn on the hazard warning flashers.
.
Turn the vehicle on and then off.
/
The time can be extended on a remote start.
See Remote Vehicle Start on page 2-9.

Door Locks

To lock or unlock the doors:
.
From inside the vehicle, use the door lock knob or the power door lock controls. Pull once on the door handle to unlock it, and a second time to open it.
.
From outside, use the key, or press
Keyless Entry (RKE) transmitter. See Remote Keyless Entry
(RKE) System Operation on page 2-3.
See Door Locks on page 2-11.
Q or K on the Remote
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 on page 2-11.

Trunk Release

To open the trunk, press and hold
Y on the Remote Keyless Entry
(RKE) transmitter to unlock all doors and then press the touch pad above the license plate.
To open the trunk from inside the vehicle, press the trunk release button on the driver door. The vehicle must be in P (Park) or off. See Trunk on page 2-13.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
1-6 In Brief

Windows

Press the switch to lower the window. Pull the switch up to raise it.
See Power Windows on page 2-20.

Seat Adjustment

Manual Seats
To adjust a manual seat:
1. Pull the handle at the front of the seat.
2. Slide the seat to the desired position and release the handle.
3. Try to move the seat back and forth to be sure it is locked in place.
Seat Height Adjuster
Press and hold the top or bottom of the switch to raise or lower the seat. Release the switch when the desired height is reached.
See Seat Adjustment on page 3-4.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-7
Power Seats
To adjust the seat:
.
Move the seat forward or rearward by moving the control forward or rearward.
.
Raise or lower the front part of the seat cushion by moving the front of the control up or down.
.
Raise or lower the entire seat by moving the rear of the control up
Lumbar Adjustment
To adjust the lumbar support:
.
Press and hold the front or rear of the control to increase or decrease lumbar support.
.
If equipped, press and hold the top or bottom of the control to raise or lower lumbar support.
See Lumbar Adjustment on page 3-5.
or down.
See Power Seat Adjustment on page 3-5.
Reclining Seatbacks
Manual Reclining Seatbacks
To recline a manual seatback:
1. Lift the lever.
2. Move the seatback to the desired position, and then release the lever to lock the seatback in place.
3. Push and pull on the seatback to make sure it is locked.
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
1-8 In Brief
.
To return the seatback to the upright position:
1. Lift the lever fully without applying pressure to the seatback, and the seatback will return to the upright position.
2. Push and pull on the seatback to make sure it is locked.
Power Reclining Seatbacks
To adjust a power seatback:
.
Tilt the top of the control rearward to recline.
Tilt the top of the control forward to raise.
See Reclining Seatbacks on page 3-6.

Memory Features

If equipped, the “1,” “2,” and SET buttons on the driver door are used to manually save and recall the driver seat and outside mirror positions.
See Memory Seats on page 3-7 and
Vehicle Personalization on page 5-45.

Heated and Ventilated Seats

Heated and Ventilated Seat
Buttons Shown, Heated Seat
Buttons Similar
If available, the buttons are part of the climate control system on the center stack. To operate, the ignition and the climate control system must be on. If the climate control system
is off, press the it on.
O button to turn
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-9
Press M or L to heat the driver or passenger seat cushion and seatback.
C or {, if equipped, to
Press ventilate the driver or passenger seat. A ventilated seat has a fan that pulls or pushes air through the seat. The air is not cooled.
Press the button once for the highest setting. With each press of the button, the seat will change to the next lower setting, and then to the off setting. The lights near the heated or ventilated seat symbol on

Head Restraint Adjustment

Do not drive until the head restraints for all occupants are installed and adjusted properly.
To achieve a comfortable seating position, change the seatback recline angle as little as necessary while keeping the seat and the head restraint height in the proper position.
See Head Restraints on page 3-2 and Seat Adjustment on page 3-4.
the display indicate three for the highest setting and one for the lowest.
See Heated and Ventilated Front Seats on page 3-9.

Safety Belts

Refer to the following sections for important information on how to use safety belts properly:
.
Safety Belts on page 3-12.
.
How to Wear Safety Belts Properly on page 3-14.
.
Lap-Shoulder Belt on page 3-15.
.
Lower Anchors and Tethers for Children (LATCH System) on page 3-41.
Black plate (10,1)
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
1-10 In Brief

Passenger Sensing System

is started. See Passenger Sensing System on page 3-26 for important
information.

Mirror Adjustment

Exterior
United States
Canada and Mexico
The passenger sensing system turns off the front outboard passenger frontal airbag under certain conditions. No other airbag is affected by the passenger sensing system.
The passenger airbag status indicator will be visible on the overhead console when the vehicle
To adjust the mirrors:
1. Turn the control knob to select the L (Left) or R (Right) mirror.
2. Push the control knob left, right, up, or down to adjust the mirror.
Vehicles with the memory feature can store a preferred mirror position.
See Memory Seats on page 3-7 and Power Mirrors on page 2-18.
Manual Folding Mirrors
The outside mirrors can be folded inward to prevent damage when going through an automatic car wash. To fold, pull the mirror toward the vehicle. Push the mirror outward to return it to the original position.
See Folding Mirrors on page 2-19.
Automatic Dimming Feature
If equipped, the driver outside mirror automatically dims to reduce the glare of headlamps from behind.
See Power Mirrors on page 2-18.
Interior
Adjust the rearview mirror for a clear view of the area behind your vehicle.
Black plate (11,1)
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707475) - 2015 - CRC - 10/9/14
In Brief 1-11
Manual Rearview Mirror
If equipped, push the tab forward for daytime use and pull it for nighttime use to avoid glare from headlamps. See Manual Rearview Mirror on page 2-20.
Automatic Dimming Rearview Mirror
If equipped, automatic dimming reduces the glare of the headlamps from behind. This feature comes on when the vehicle is started. See
Automatic Dimming Rearview Mirror on page 2-20.
Vehicles with OnStar control buttons at the bottom of the mirror. See your dealer for more information on the system and how to subscribe to OnStar. See OnStar Overview on page 14-1.
®
have three

Steering Wheel Adjustment

To adjust the steering wheel:
1. Pull the lever down.
2. Move the steering wheel up or down.
3. Pull or push the steering wheel closer or away from you.
4. Pull the lever up to lock the steering wheel in place.
Do not adjust the steering wheel while driving.

Interior Lighting

Dome Lamps
The interior lamps control in the overhead console controls both the front and rear interior lamps.
( : Turns the lamps off. H : Turns the lamps on when any
door is opened.
' : Keeps the lamps on all
the time.
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.

Windshield Wiper/Washer

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.
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 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.
x
n L : Pull the lever toward you to
spray windshield washer fluid and activate the wipers.
See Windshield Wiper/Washer on page 5-3.
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1-14 In Brief

Climate Controls

The heating, cooling, and ventilation for the vehicle can be controlled with this system.
1. Driver and Passenger Temperature Controls
2. Heated and Ventilated Front Seats
3. Fan Control
4. Air Delivery Mode Controls
5. Defrost
6. SYNC (Synchronized Temperature)
7. Power
8. A/C (Air Conditioning)
9. Recirculation/Auto Recirculation
10. Rear Window Defogger
11. AUTO (Automatic Operation)
See Dual Automatic Climate Control System on page 8-1.

Transmission

Automatic Transmission
Driver Shift Control (DSC)
Driver Shift Control (DSC) allows shifting an automatic transmission similar to a manual transmission. DSC can be enabled through the shift lever. See Manual Mode on page 9-29.
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In Brief 1-15

Vehicle Features

Infotainment System

See the infotainment manual for information on the radio, audio players, phone, navigation system, Rear Seat Entertainment (RSE), and voice or speech recognition. It also includes information on settings.

Steering Wheel Controls

The infotainment system can be operated by using the steering wheel controls. See "Steering Wheel Controls" in the infotainment manual.

Cruise Control

5 : Press to turn cruise control on
or off. A white indicator comes on in the instrument cluster.
RES+: If there is a set speed in memory, press the control up briefly to resume to that speed or press and hold to accelerate. If cruise control is already active, use to increase vehicle speed.
SET−: Press the control down briefly to set the speed and activate cruise control. If cruise control is already active, use to decrease vehicle speed.
* : Press to disengage cruise
control without erasing the set speed from memory.
See Cruise Control on page 9-37 and Adaptive Cruise Control on page 9-39 (if equipped).

Driver Information Center (DIC)

The DIC display is in the instrument cluster. It shows the status of many vehicle systems.
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1-16 In Brief

Forward Collision Alert (FCA) System

If equipped, FCA may help avoid or reduce the harm caused by front-end crashes. FCA provides a
green indicator, is detected ahead. This indicator displays amber if you follow a vehicle much too closely. When approaching a vehicle ahead too quickly, FCA provides a flashing red
y or z : Press to move up or
down in a list.
S or T : Press S to open
application menus on the left. Press
T to open interaction menus on the
right.
V : Press to open a menu or select
a menu item. Press and hold to reset values on certain screens.
See Driver Information Center (DIC) on page 5-28.
alert on the windshield and rapidly beeps or pulses the driver seat.
See Forward Collision Alert (FCA) System on page 9-50.

Lane Departure Warning (LDW)

If equipped, LDW may help avoid unintentional lane departures at speeds of 56 km/h (35 mph) or greater. LDW uses a camera sensor to detect the lane markings. The
LDW light, marking is detected. If the vehicle departs the lane, the light will
V, when a vehicle
@, is green if a lane
change to amber and flash. In addition, beeps will sound or the driver seat will pulse.
See Lane Departure Warning (LDW) on page 9-57.

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 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)
on page 9-54 and Lane Change Alert on page 9-55.
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In Brief 1-17

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 on page 9-48.

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 on page 9-48.

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 on page 9-48.

Active Emergency Braking System

If the vehicle has Adaptive Cruise Control (ACC) it also has the Active Emergency Braking System, which includes Intelligent Brake Assist (IBA) and the Automatic Collision Preparation (ACP) System. These systems can provide a boost to braking or automatically brake the
vehicle to help avoid or lessen the severity of crashes when driving in a forward gear.
See Active Emergency Braking System on page 9-53.

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 on page 5-5.
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1-18 In Brief

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 on page 5-51.

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) on page 9-23.
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.
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In Brief 1-19
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 on page 2-23.

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 Engine on page 9-18.
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 on page 8-1.
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) on page 9-33.
Vehicles with eAssist include an AUTO STOP indicator on the tachometer. See Instrument Cluster on page 5-8.
The eAssist system uses a high voltage battery, which is cooled with air drawn from the vehicle interior.
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1-20 In Brief
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
The cold air intake for the battery is located behind the rear seat, on the filler panel. Do not cover the intake. See Battery on page 10-27.

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.
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 accelerator pedal is applied, the engine will restart. The engine will continue to run until the next auto stop.
To restart the engine during the auto stop, release the brake pedal or press the accelerator pedal. The
engine starts immediately. The vehicle continues to run until the next stop.
AUTO STOP on the tachometer signifies that the engine is in auto stop mode. See Tachometer on page 5-11 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 on page 9-18.

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.
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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 on page 10-27.

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 on page 10-4.

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. appropriate DIC message is displayed. See Ride Control System Messages on page 5-42.
i illuminates and the
In Brief 1-21
.
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 and the appropriate DIC message is displayed. See Ride
Control System Messages on page 5-42.
.
Press and release the TCS/ StabiliTrak button to turn on both systems.
See Traction Control/Electronic Stability Control on page 9-34.
i and g illuminate
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1-22 In Brief

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 on page 9-10. 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 on page 10-51.

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) on page 5-28. When remaining oil
life is low, the CHANGE ENGINE OIL SOON message will appear on the display. See
Engine Oil Messages on page 5-38.
2. Press
See Engine Oil Life System on page 10-13.
V on 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.
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E85 or FlexFuel

Vehicles with a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). See E85 or FlexFuel on page 9-60. For all other vehicles, use only the unleaded gasoline described under Fuel on page 9-58.

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.
In Brief 1-23
See Roadside Assistance Program on page 13-5.
OnStar
This vehicle may be equipped with a comprehensive, in-vehicle system that can connect to a live OnStar Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. OnStar services may require a paid subscription. See OnStar Overview on page 14-1.
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