2012 BUICK LACROSSE change key battery

Black plate (7,1)Buick LaCrosse Owner Manual - 2012
Lighting 6-7
Lighting Features
Entry Lighting
The headlamps, taillamps, license
plate lamps, back‐up lamps, dome
lamps, and most of the interior lights
turn on briefly when the Remote
Keyless Entry (RKE)
Kbutton is
pressed, or when the door handle is
pulled on a keyless access vehicle.
See Ignition Positions (Key Access)
on page 9‑18 orIgnition Positions
(Keyless Access) on page 9‑20.
After about 30 seconds the exterior
lamps turn off, then the dome lamps
and remaining interior lights dim to
off. Entry lighting can be disabled
manually by changing the ignition
out of the OFF position, or by
pressing the RKE
Qbutton.
This feature can be changed. See
Vehicle Personalization on
page 5‑43.
Exit Lighting
The headlamps, taillamps, parking
lamps, back‐up lamps, and license
plate lamps come on at night, or in
areas with limited lighting, when the
key is removed from the ignition.
The dome lamps also come on
when the key is removed from the
ignition. The exterior lights and
dome lamps remain on after the
door is closed for a set amount of
time, then automatically turn off.
For vehicles with keyless access,
the exterior lights and dome lamps
automatically turn on when a door is
opened after the ignition is turned
off. See Ignition Positions (Key
Access) on page 9‑18 orIgnition
Positions (Keyless Access) on
page 9‑20.
The exterior lights turn off
immediately by turning the exterior
lamps control off.
This feature can be changed. See
Vehicle Personalization on
page 5‑43.
Battery Load
Management
The vehicle has Electric Power
Management (EPM) that estimates
the battery's temperature and state
of charge. It then adjusts the voltage
for best performance and extended
life of the battery.
When the battery's state of charge
is low, the voltage is raised slightly
to quickly bring the charge back up.
When the state of charge is high,
the voltage is lowered slightly to
prevent overcharging. If the vehicle
has a voltmeter gauge or a voltage
display on the Driver Information
Center (DIC), you may see the
voltage move up or down. This is
normal. If there is a problem, an
alert will be displayed.

Black plate (54,1)Buick LaCrosse Owner Manual - 2012
7-54 Infotainment System
The AUX button also controls the
source display between the left and
right video screens as described in
the table below:Aux
Button
Press Left
Screen Right
Screen
Default
State (No
Press) DVD
Media DVD
Media
First
Press Aux Video
Source Aux Video
Source
Second Press DVD
Media Aux Video
Source
Third
Press Aux Video
Source DVD
Media
Fourth Press Return to
DefaultState Return to
DefaultState2(Camera): Press to change the
camera angle on DVDs that have
this feature when the DVD is
playing.
\(Clear) (If Available): Press this
button within three seconds after
inputting a numeric selection, to
clear all numeric inputs.
}10 (Double Digit Entries)
(If Available): Press this button to
select chapter or track numbers
greater than 9. Press this button
before inputting the number.
1 through 0 (Numeric Keypad):
The numbered keypad provides the
capability of direct chapter or track
number selection. Replacing the Remote Control
If the remote control becomes lost
or damaged, a new universal
remote control can be purchased.
Use a Toshiba
®code set for
replacement universal remote
controls.
Battery Replacement
To change the remote control
batteries:
1. Slide back the rear cover on the remote control.
2. Replace the two batteries in the compartment.
3. Replace the battery cover.
Remove the batteries from the
remote control if unused for an
extended period of time.

Black plate (22,1)Buick LaCrosse Owner Manual - 2012
9-22 Driving and Operating
Starting the Engine
Move the shift lever to P (Park) or
N (Neutral). The engine will not start
in any other position. To restart the
engine when the vehicle is already
moving, use N (Neutral) only.
Notice:Do not try to shift to
P (Park) if the vehicle is moving.
If you do, you could damage the
transmission. Shift to P (Park)
only when the vehicle is stopped.
Notice: The engine is designed to
work with the electronics in the
vehicle. If you add electrical parts
or accessories, you could change
the way the engine operates.
Before adding electrical
equipment, check with your
dealer. If you do not, the engine
might not perform properly. Any
resulting damage would not be
covered by the vehicle warranty. Starting Procedure (Key Access)
1. With your foot off the accelerator
pedal, turn the ignition key to
START. When the engine starts,
let go of the ignition.
The idle speed will go down as
your engine gets warm. Do not
race the engine immediately
after starting it. Operate the
engine and transmission gently
to allow the oil to warm up and
lubricate all moving parts.
The vehicle has a
Computer-Controlled Cranking
System. This feature assists in
starting the engine and protects
components. If the ignition key is
turned to the START position,
and then released when the
engine begins cranking, the
engine will continue cranking for
a few seconds or until the
vehicle starts. If the engine does
not start and the key is held in
START for many seconds,
cranking will be stopped after
15 seconds to prevent cranking motor damage. To prevent gear
damage, this system also
prevents cranking if the engine
is already running. Engine
cranking can be stopped by
turning the ignition switch to
ACC/ACCESSORY or
LOCK/OFF.
Notice: Cranking the engine for
long periods of time, by returning
the key to the START position
immediately after cranking has
ended, can overheat and damage
the cranking motor, and drain the
battery. Wait at least 15 seconds
between each try, to let the
cranking motor cool down.
2. If the engine does not start after five to 10 seconds, especially in
very cold weather (below −18°C
or 0°F), it could be flooded with
too much gasoline. Try pushing
the accelerator pedal all the way
to the floor and holding it there
as you hold the key in START,
or press the START button, for
up to a maximum of 15 seconds.
Wait at least 15 seconds