sunroof BUICK LACROSSE 2012 Owner's Manual

Black plate (1,1)Buick LaCrosse Owner Manual - 2012
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 . . . . . . . . . . . . . . . . 1-6
Windows . . . . . . . . . . . . . . . . . . . . . . 1-6
Seat Adjustment . . . . . . . . . . . . . . 1-6
Memory Features . . . . . . . . . . . . . 1-8
Heated and Ventilated Seats . . . . . . . . . . . . . . . . . . . . . . . . 1-9
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 . . . . . . . . . . . . . . . . 1-16Vehicle Features
Radio(s) . . . . . . . . . . . . . . . . . . . . . 1-17
Satellite Radio . . . . . . . . . . . . . . . 1-17
Portable Audio Devices . . . . . . 1-18
Bluetooth
®. . . . . . . . . . . . . . . . . . . 1-18
Steering Wheel Controls . . . . . 1-18
Cruise Control . . . . . . . . . . . . . . . 1-19
Navigation System . . . . . . . . . . . 1-19
Driver Information Center (DIC) . . . . . . . . . . . . . . . 1-20
Vehicle Personalization . . . . . . 1-20
Ultrasonic Parking Assist . . . . 1-20
Power Outlets . . . . . . . . . . . . . . . 1-21
Universal Remote System . . . 1-21
Sunroof . . . . . . . . . . . . . . . . . . . . . . 1-21
eAssist Features
eAssist®Overview . . . . . . . . . . . 1-22
High Voltage Safety Information . . . . . . . . . . . . . . . . . 1-23
Driver Efficiency Gauge . . . . . . 1-23
Automatic Engine Start/Stop Feature . . . . . . . . . . . . . . . . . . . . . 1-24
Regenerative Braking . . . . . . . . 1-24
Battery . . . . . . . . . . . . . . . . . . . . . . . 1-24
Service . . . . . . . . . . . . . . . . . . . . . . 1-25
Performance and Maintenance
Traction Control System (TCS) . . . . . . . . . . . . . . 1-25
StabiliTrak
®System . . . . . . . . . 1-25
Tire Pressure Monitor . . . . . . . . 1-26
Tire Sealant and Compressor Kit . . . . . . . . . . . . . 1-26
Engine Oil Life System . . . . . . 1-27
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . 1-27
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . 1-27
OnStar
®. . . . . . . . . . . . . . . . . . . . . 1-28

Black plate (21,1)Buick LaCrosse Owner Manual - 2012
In Brief 1-21
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 is located under the
armrest inside the center console
storage and the other is on the rear
of the center floor console.
Open the protective cover to use the
accessory power outlet.
SeePower Outlets on page 5‑7.
Universal Remote System
This system provides 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 you with
programming the Universal Remote
System.
SeeUniversal Remote System on
page 5‑49.
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 in Retained
Accessory Power (RAP). See
Retained Accessory Power (RAP)
on page 9‑27.
Vent: Press the rear of the
switch (B) to the first detent to vent
the sunroof. Press the front of the
switch (A) to the second detent to
close the sunroof.

Black plate (22,1)Buick LaCrosse Owner Manual - 2012
1-22 In Brief
Express-open/Express-close:To
express-open the sunroof, fully
press and release the rear of the
switch (B). To express-close, fully
press and release the front of the
switch (A). 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 (C). To stop the sunshade
partway, press the switch a second
time. To express-close, fully press
and release the front of the
switch (D). To stop the sunshade
partway, press the switch a
second time.
See Sunroof on page 2‑22.eAssist Features
eAssist®Overview
If the vehicle has eAssist, there are
several additional features which
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 will only shut off
automatically part of the time. See
Starting the Engine on page 9‑22.
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 8‑5. 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 9‑38.
Vehicles with eAssist have a slightly
different instrument cluster, which
includes an efficiency gauge, and
an AUTO STOP indicator on the
tachometer. See Instrument Cluster
on page 5‑10. There is also a Power
Flow Gauge in the Driver
Information Center (DIC). See
Driver Information Center (DIC) on
page 5‑27.
The eAssist system uses a high
voltage battery, which is cooled with
air drawn from the vehicle interior.

Black plate (1,1)Buick LaCrosse Owner Manual - 2012
Keys, Doors, and Windows 2-1
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 2-3
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . 2-4
Remote Vehicle Start . . . . . . . . . 2-9
Door Locks . . . . . . . . . . . . . . . . . . 2-11
Power Door Locks . . . . . . . . . . . 2-12
Delayed Locking . . . . . . . . . . . . . 2-12
Safety Locks . . . . . . . . . . . . . . . . . 2-12
Doors
Trunk . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . 2-14
Anti-theft Alarm System . . . . . . 2-14
Immobilizer . . . . . . . . . . . . . . . . . . 2-15
Immobilizer Operation (Key Access) . . . . . . . . . . . . . . . . . . . . 2-15
Immobilizer Operation (Keyless Access) . . . . . . . . . . . 2-16
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . 2-17
Power Mirrors . . . . . . . . . . . . . . . . 2-17
Folding Mirrors . . . . . . . . . . . . . . . 2-17
Heated Mirrors . . . . . . . . . . . . . . . 2-18
Park Tilt Mirrors . . . . . . . . . . . . . . 2-18
Interior Mirrors
Manual Rearview Mirror . . . . . . 2-18
Automatic Dimming RearviewMirror . . . . . . . . . . . . . . . . . . . . . . . 2-19
Windows
Windows . . . . . . . . . . . . . . . . . . . . . 2-19
Power Windows . . . . . . . . . . . . . 2-20
Sun Visors . . . . . . . . . . . . . . . . . . . 2-21
Rear Window Sunshade . . . . . 2-21
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . 2-22

Black plate (19,1)Buick LaCrosse Owner Manual - 2012
Keys, Doors, and Windows 2-19
Automatic Dimming
Rearview Mirror
On vehicles with an automatic
dimming inside rearview mirror the
automatic dimming reduces the
glare from the headlamps of the
vehicle behind you.
Vehicles with OnStar have three
control buttons located at the
bottom of the mirror. See your
dealer for more information about
OnStar and how to subscribe to it.
SeeOnStar Overview on page 14‑1.
Cleaning the Mirror
Do not spray glass cleaner directly
on the mirror. Use a soft towel
dampened with water.
Windows
{WARNING
Leaving children, helpless adults,
or pets in a vehicle with the
windows closed is dangerous.
They can be overcome by the
extreme heat and suffer
permanent injuries or even death
from heat stroke. Never leave a
child, a helpless adult, or a pet
alone in a vehicle, especially with
the windows closed in warm or
hot weather.
The vehicle aerodynamics are
designed to improve fuel economy
performance. This may result in a
pulsing sound when a window is
partially open. To reduce the sound,
open another window or the sunroof
(if equipped).

Black plate (22,1)Buick LaCrosse Owner Manual - 2012
2-22 Keys, Doors, and Windows
Roof
Sunroof
On vehicles with a sunroof, the
switch is located on the overhead
console.
The sunroof only operates when the
ignition is in ON/RUN or ACC/
ACCESSORY, or in Retained
Accessory Power (RAP). See
Retained Accessory Power (RAP)
on page 9‑27.
Vent
The sunroof has an express-vent
open feature. From the closed
position, press the rear of the
sunroof switch (B) to the first detent
to vent the sunroof. To close the
sunroof, press the front of the
sunroof switch (A) to the second
detent.
Express-Open/Express-Close
To express-open the sunroof from
the closed or vent position, fully
press and release the rear of the
switch (B). The sunroof opens
automatically. To stop the sunroof
partway, press the switch a second
time. To express-close the sunroof,
fully press and release the front of
the switch (A). The sunroof closes
automatically. To stop the sunroof
partway, press the switch a
second time.
If the sunshade is closed, it opens
automatically with the sunroof but
can also be express-opened/
express-closed by using thesunshade control (C) or (D). The
sunshade cannot be fully closed
with the sunroof open.
To express-open the sunshade from
the closed position, fully press and
release the rear of the switch (C).
The sunshade opens automatically.
To stop the sunshade partway,
press the switch a second time. To
express-close the sunshade fully
press and release the front of the
switch (D). The sunshade closes
automatically. To stop the sunshade
partway, press the switch a
second time.
Notice:
Forcing the sunshade
forward of the sliding glass panel
may cause damage and the
sunroof may not operate properly.
Always close the glass panel
before closing the sunshade.
The sunroof glass panel cannot be
opened or closed if the vehicle has
an electrical failure.

Black plate (23,1)Buick LaCrosse Owner Manual - 2012
Keys, Doors, and Windows 2-23
Anti-Pinch Feature
If an object is in the path of the
sunroof while it is closing, the
anti-pinch feature will detect the
object and stop the sunroof from
closing at the point of the
obstruction. The sunroof and
sunshade will then return to the
open or vent position. To close the
sunroof once the obstruction has
been removed, refer to
"Express-Open/Express-Close"
earlier in this section.
Dirt and debris may collect on the
sunroof seal or in the track. This
could cause issues with sunroof
operation and noise. It could also
plug the water drainage system.
Periodically open the sunroof and
remove any obstacles or loose
debris. Wipe the sunroof seal and
roof sealing area using a clean
cloth, mild soap, and water. Do not
remove grease from the sunroof.

Black plate (27,1)Buick LaCrosse Owner Manual - 2012
Driving and Operating 9-27
{WARNING
Plugging the cord into an
ungrounded outlet could cause an
electrical shock. Also, the wrong
kind of extension cord could
overheat and cause a fire. You
could be seriously injured. Plug
the cord into a properly grounded
three-prong 110-volt AC outlet.
If the cord will not reach, use a
heavy-duty three-prong extension
cord rated for at least 15 amps.
4. Before starting the engine, be sure to unplug and store the
cord as it was before to keep it
away from moving engine parts.
The length of time the heater should
remain plugged in depends on
several factors. Ask a dealer in the
area where you will be parking the
vehicle for the best advice on this.
Retained Accessory
Power (RAP)
These vehicle accessories can be
used for up to 10 minutes after the
engine is turned off:
.Audio System
.Power Windows
.Sunroof (If Equipped)
.Auxiliary Power Outlet
Power to the audio system will
continue to operate for up to
10 minutes or until the driver door is
opened.
Power to the power windows and
sunroof will continue to operate for
up to 10 minutes or until any door is
opened.
All of these features will work when
the ignition is in ON/RUN or ACC/
ACCESSORY.
Shifting Into Park
{WARNING
It can be dangerous to get out of
the vehicle if the shift lever is not
fully in P (Park) with the parking
brake firmly set. The vehicle can
roll. If you have left the engine
running, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when you are on
fairly level ground, use the steps
that follow.
1. Hold the brake pedal down and set the parking brake.
See Parking Brake on page 9‑36
for more information.
2. Move the shift lever into P (Park) by pushing the lever all the way
toward the front of the vehicle.
3. Turn the ignition off.

Black plate (39,1)Buick LaCrosse Owner Manual - 2012
Vehicle Care 10-39
Engine Compartment Fuse Block
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. J-CaseFuses Usage
6 Wiper
12 Starter J-Case
Fuses Usage
21 Rear Power
Windows
22 Sunroof
24 Front Power
Windows J-Case
Fuses Usage
25 Passive Entry/
Passive Start
Module
—Battery 2
(eAssist)
26 Antilock Brake
System Pump
27 Electric Park Brake
28 Rear Window
Defogger
41 Brake
Vacuum Pump
42 Cooling Fan K2
43 Not Used
44 Transmission
Auxiliary Oil Pump
(eAssist)
45 Cooling Fan K1
59 AIR Pump

Black plate (4,1)Buick LaCrosse Owner Manual - 2012
11-4 Service and Maintenance
.Check tire inflation pressures.
SeeTire Pressure on
page 10‑54.
.Inspect tire wear. See Tire
Inspection on page 10‑60.
.Visually check for fluid leaks.
.Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter on
page 10‑13.
.Inspect brake system.
.Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of
wear. See Exterior Care on
page 10‑102.
.Check restraint system
components. See Safety System
Check on page 3‑20.
.Visually inspect fuel system for
damage or leaks.
.Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
.Lubricate body components. See
Exterior Care on page 10‑102.
.Check starter switch. See Starter
Switch Check on page 10‑27.
.Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check on
page 10‑27.
.Check ignition transmission lock.
See Ignition Transmission Lock
Check on page 10‑28.
.Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check on
page 10‑28.
.Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
.Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
.Check tire sealant expiration
date, if equipped. See Tire
Sealant and Compressor Kit
(With Pressure Relief Button) on
page 10‑71 orTire Sealant and
Compressor Kit (With Pressure
Deflation Button) on page 10‑78.
.Inspect sunroof track and seal,
if equipped. See Sunroof on
page 2‑22.