
Black plate (71,1)Buick LaCrosse Owner Manual - 2012
Infotainment System 7-71
Changing Bluetooth Code
The default Bluetooth code should
work with most mobile phones.
If you are having difficulty pairing
your mobile phone, you can change
the code at any time.
1. Press the CONFIG button.
2. Select Phone Settings, or touchPhone on a navigation radio.
3. Select Bluetooth.
4. Select Change Bluetooth Code.
5. Enter a new four-digit code, then select OK.
Ring Tone
There are three different ring tones
available for the UHP system.
To change the ring tone:
1. Press the CONFIG button.
2. Select Phone Settings, or touch Phone on a navigation radio.
3. Select Ring Tones.
4. Select Ring Tone 1, 2, or 3. Default Settings
Selecting this option will reset the
ring tones and the Bluetooth code.
Pairing
A Bluetooth enabled mobile phone
must be paired to the UHP system
first and then connected to the
vehicle before it can be used. See
the mobile phone manufacturer's
user guide for Bluetooth functions
before pairing the mobile phone.
Pairing Information:
.Up to five mobile phones can be
paired to the UHP system
.The pairing process is disabled
when the vehicle is moving
.The UHP system connects with
the first available paired mobile
phone in the order the phone
was paired
.Only one paired mobile phone
can be connected to the UHP
system at a time
.Pairing should only need to be
completed once, unless changes
to the pairing information have
been made or the mobile phone
is deleted
Using UHP with Infotainment
Controls
Pairing a Phone
If your mobile phone has simple
pairing or auto discovery features,
they need to be turned off before
the mobile phone can be paired to
the UHP system. Reference the
mobile phone manufacturer's user
guide for information on these
features.
1. Press the CONFIG button.
2. Select Phone Settings, or touch
Phone on a navigation radio.
3. Select Bluetooth. 

Black plate (72,1)Buick LaCrosse Owner Manual - 2012
7-72 Infotainment System
4. Select Pair Device or Add newHands‐free (HF) device on a
navigation radio. A four-digit
number appears on the display
and the UHP system goes into
discovery mode.
5. Start the pairing process on the mobile phone that will be paired
to the vehicle. Reference the
mobile phone manufacturer's
user guide for information on this
process.
Locate the device named UHP
followed by a four‐digit number
in the list on the mobile phone
and follow the instructions on the
mobile phone and enter the
four-digit code provided by the
system if necessary, then follow
the instructions on the
infotainment display screen.
6. Repeat Steps 1 through 5 to pair additional mobile phones. Viewing All Paired and Connected
Phones
To view all available mobile phones
that are paired to the UHP system:
1. Press the CONFIG button.
2. Select Phone Settings, or touch
Phone on a navigation radio.
3. Select Bluetooth.
4. Select Device List.
5. Repeat Steps 1 through 4 to pair additional mobile phones.
Deleting a Paired Phone
To remove a paired mobile phone
from the UHP system:
1. Press the CONFIG button.
2. Select Phone Settings, or touch Phone on a navigation radio.
3. Select Bluetooth.
4. Select Device List.
5. Select the mobile phone to delete and follow the on screen
prompts. Connecting to a Different Phone
To connect to a different paired
mobile phone, the new mobile
phone must be in the vehicle and
available to be connected to the
UHP system before the process is
started.
To connect to a different phone:
1. Press the CONFIG button.
2. Select Phone Settings, or touch
Phone on a navigation radio.
3. Select Bluetooth.
4. Select Device List.
5. Select the new mobile phone to link to and follow the on screen
prompts.
If delete is selected, the highlighted
mobile phone will be deleted. 

Black plate (4,1)Buick LaCrosse Owner Manual - 2012
8-4 Climate Controls
For vehicles with heated outside
rearview mirrors, they turn on when
the rear window defogger button is
on and help to clear fog or frost from
the surface of the mirror. See
Heated Mirrors on page 2‑18.
Notice:Do not try to clear frost
or other material from the inside
of the front windshield and rear
window with a razor blade or
anything else that is sharp. This
may damage the rear window
defogger grid and affect your
radio's ability to pick up stations
clearly. The repairs would not be
covered by your warranty. Remote Start Climate Control
Operation (If Equipped):
When
the vehicle is started remotely, the
climate control system will use the
last setting before the vehicle shut
off. If automatic operation was set,
the fan speed will adjust to
maximize heating or cooling.
If manual operation was set, the fan
speed will be limited to the last
setting. In extreme temperatures,
the system may not be able to heat
or cool the vehicle to the preset
temperature during the remote start
run time.
The rear window defogger turns on
if it is cold outside.Sensor
The solar sensor, located on top of
the instrument panel near the
windshield, monitors the solar heat.
The climate control system uses the
sensor information to adjust the
temperature, fan speed,
recirculation, and air delivery mode
for best comfort.
Do not cover the sensor; otherwise
the automatic climate control system
may not work properly. 

Black plate (10,1)Buick LaCrosse Owner Manual - 2012
8-10 Climate Controls
For vehicles with heated outside
rearview mirrors, they turn on when
the rear window defogger button is
on and help to clear fog or frost from
the surface of the mirror. See
Heated Mirrors on page 2‑18.
Notice:Do not try to clear frost
or other material from the inside
of the front windshield and rear
window with a razor blade or
anything else that is sharp. This
may damage the rear window
defogger grid and affect your
radio's ability to pick up stations
clearly. The repairs would not be
covered by your warranty.
((Heated Steering Wheel): For
vehicles with this feature, press to
turn on or off. See Heated Steering
Wheel on page 5‑3.
Remote Start Climate Control
Operation (If Equipped): When
the vehicle is started remotely, the
climate control system will use the
last setting before the vehicle shut
off. If automatic operation was set,
the fan speed will adjust to maximize heating or cooling.
If manual operation was set, the fan
speed will be limited to the last
setting. In extreme temperatures,
the system may not be able to heat
or cool the vehicle to the preset
temperature during the remote start
run time.
The rear window defogger turns on
if it is cold outside.
Sensor
The solar sensor, located on top of
the instrument panel near the
windshield, monitors the solar heat.
The climate control system uses the
sensor information to adjust the
temperature, fan speed,
recirculation, and air delivery mode
for best comfort.
Do not cover the sensor; otherwise
the automatic climate control system
may not work properly.
Air Vents
Use the louvers located on the air
vents to change the direction of the
airflow.
To open the vent, move the
thumbwheel to
t. To close the vent,
move the thumbwheel to
l.
For vehicles with eAssist, there is a
battery cooling air vent located on
the shelf behind the rear passenger
seats below the rear window. Keep
this air inlet clear from items that
may block air flow. Proper airflow is
required to keep the eAssist battery
and control system cool. 

Black plate (2,1)Buick LaCrosse Owner Manual - 2012
9-2 Driving and Operating
Towing
General TowingInformation . . . . . . . . . . . . . . . . . 9-57
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . 9-57
Trailer Towing (Except
eAssist) . . . . . . . . . . . . . . . . . . . . 9-61
Trailer Towing (eAssist) . . . . . . 9-62
Towing Equipment . . . . . . . . . . . 9-62
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . 9-63
Driving Information
Distracted Driving
Distraction comes in many forms
and can take your focus from the
task of driving. Exercise good
judgment and do not let other
activities divert your attention away
from the road. Many local
governments have enacted laws
regarding driver distraction. Become
familiar with the local laws in
your area.
To avoid distracted driving, always
keep your eyes on the road, hands
on the wheel, and mind on the drive.
.Do not use a phone in
demanding driving situations.
Use a hands-free method to
place or receive necessary
phone calls.
.Watch the road. Do not read,
take notes, or look up
information on phones or other
electronic devices.
.Designate a front seat
passenger to handle potential
distractions.
.Become familiar with vehicle
features before driving, such as
programming favorite radio
stations and adjusting climate
control and seat settings.
Program all trip information into
any navigation device prior to
driving.
.Wait until the vehicle is parked
to retrieve items that have fallen
to the floor.
.Stop or park the vehicle to tend
to children.
.Keep pets in an appropriate
carrier or restraint.
.Avoid stressful conversations
while driving, whether with a
passenger or on a cell phone. 

Black plate (20,1)Buick LaCrosse Owner Manual - 2012
9-20 Driving and Operating
Ignition Positions
(Keyless Access)
The vehicle has an electronic
keyless ignition with pushbutton
start.
Pressing the button cycles it through
three modes, ACC/ACCESSORY,
ON/RUN/START, and Stopping the
Engine/OFF.The transmitter must be in the
vehicle for the system to operate.
If the pushbutton start is not
working, the vehicle may be near a
strong radio antenna signal causing
interference to the keyless access
system. See
Remote Keyless Entry
(RKE) System Operation on
page 2‑4 for more information.
To shift out of P (Park), the vehicle
must be in ACC/ACCESSORY or
ON/RUN and the brake pedal must
be applied.
Stopping the Engine/OFF (No LED
Lights): When the vehicle is
stopped, press the engine START/
STOP button once to turn the
engine off.
If the vehicle is in P (Park), the
ignition will turn off, and Retained
Accessory Power (RAP) will remain
active. See Retained Accessory
Power (RAP) on page 9‑27 for more
information. If the vehicle is not in P (Park), the
ignition will return to ACC/
ACCESSORY and display the
message SHIFT TO PARK in the
Driver Information Center (DIC).
See
Transmission Messages on
page 5‑42 for more information.
When the vehicle is shifted into
P (Park), the ignition system will
switch to OFF.
Do not turn the engine off when the
vehicle is moving. This will cause a
loss of power assist in the brake
and steering systems and disable
the airbags.
If the vehicle must be shut off in an
emergency:
1. Brake using a firm and steady pressure. Do not pump the
brakes repeatedly. This may
deplete power assist, requiring
increased brake pedal force. 

Black plate (48,1)Buick LaCrosse Owner Manual - 2012
9-48 Driving and Operating
SBZA is designed to ignore
stationary objects; however, the
system may occasionally light up
due to guard rails, signs, trees,
shrubs, and other stationary objects.
This is normal system operation; the
vehicle does not need service.
SBZA does not operate when the
left or right corners of the rear
bumper are covered with mud, dirt,
snow, ice, or slush, or in heavy
rainstorms. For cleaning
instructions, seeExterior Care on
page 10‑102. If the infotainment
display still shows the SIDE BLIND
ZONE SYS. UNAVAILABLE
message after cleaning the bumper,
see your dealer.
The SBZA displays may remain on
if a trailer is attached to the vehicle,
or a bicycle or object is extending
out to either side of the vehicle. When SBZA is disabled for any
reason other than the driver turning
it off, the driver will not be able to
turn SBZA back on using vehicle
personalization. The On option will
not be selectable if the conditions
for normal system operation are not
met. Until normal operating
conditions for SBZA are met, you
should not rely upon SBZA while
driving.
SBZA Error Messages
The following messages may
appear on the infotainment display:
SIDE BLIND ZONE ALERT
SYSTEM OFF:
This message
indicates that the driver has turned
the system off.
SIDE BLIND ZONE SYS.
UNAVAILABLE: This message
indicates that the SBZA system is
disabled because the sensor is
blocked and cannot detect vehicles
in the blind zone. The sensor may be blocked by mud, dirt, snow, ice,
or slush. This message may also
activate during heavy rain or due to
road spray. The vehicle does not
need service. For cleaning, see
Exterior Care on page 10‑102.
SERVICE BLIND ZONE ALERT
SYSTEM:
If this message appears,
both SBZA displays will remain on
indicating there is a problem with
the SBZA system. If these displays
remain on after continued driving,
the system needs service. Take the
vehicle to your dealer.
FCC Information
See Radio Frequency Statement on
page 13‑22 for information
regarding Part 15 of the Federal
Communications Commission (FCC)
rules and Industry Canada
Standards RSS-GEN/210/220/310. 

Black plate (43,1)Buick LaCrosse Owner Manual - 2012
Vehicle Care 10-43
Instrument Panel Fuse Block
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. Fuses Usage
1 Steering Wheel
Controls Backlight
2 Body Control
Module 7
3 Body Control
Module 5
4 Radio
5 OnStar
6 Power Outlet 1
7 Power Outlet 2
8 Body Control
Module 1
9 Body Control
Module 4
10 Body Control
Module 8
(J‐Case Fuse) Fuses Usage
11 Front Heater
Ventilation Air
Conditioning/Blower
(J‐Case Fuse)
12 Passenger Seat
(Circuit Breaker)
13 Driver Seat (Circuit
Breaker)
14 Diagnostic Link
Connector
15 Airbag
16 Trunk
17 Heater Ventilation
Air Conditioning
Controller
18 Pre‐Fuse for Fuses
4 and 5