2005 BUICK LESABRE ECU

Keys...............................................................2-3
Remote Keyless Entry System.........................2-5
Remote Keyless Entry System Operation...........2-6
Doors and Locks............................................2-10
Door Locks..................................................2-10
Central Door Unlocking System......................2-11
Power Door Locks........................................2-11
Door Ajar Reminder......................................2-11
Delayed Locking...........................................2-11
Programmable Automatic Door Locks..............2-12
Rear Door Security Locks..............................2-13
Lockout Protection........................................2-14
Trunk..........................................................2-14
Windows........................................................2-16
Power Windows............................................2-17
Sun Visors...................................................2-17
Theft-Deterrent Systems..................................2-18
Content Theft-Deterrent.................................2-18
PASS-Key
®III ..............................................2-19
PASS-Key®III Operation...............................2-20
Starting and Operating Your Vehicle................2-21
New Vehicle Break-In....................................2-21
Ignition Positions..........................................2-22Retained Accessory Power (RAP)...................2-23
Starting Your Engine.....................................2-23
Engine Coolant Heater..................................2-24
Automatic Transaxle Operation.......................2-25
Parking Brake..............................................2-27
Shifting Into Park (P).....................................2-28
Shifting Out of Park (P).................................2-30
Parking Over Things That Burn.......................2-30
Engine Exhaust............................................2-31
Running Your Engine While You
Are Parked...............................................2-31
Mirrors...........................................................2-32
Manual Rearview Mirror.................................2-32
Automatic Dimming Rearview Mirror................2-32
Automatic Dimming Rearview Mirror
with Compass...........................................2-33
Outside Power Mirrors...................................2-35
Outside Curb View Assist Mirror.....................2-36
Outside Convex Mirror...................................2-36
Outside Automatic Dimming Heated Mirror........2-36
OnStar®System.............................................2-37
HomeLink®Transmitter...................................2-38
Programming the HomeLink®Transmitter.........2-39
Section 2 Features and Controls
2-1

Remote Keyless Entry System
Operation
With this feature, you can lock and unlock your doors
or unlock your trunk from about 3 feet (1 m) up to
30 feet (9 m) away using the remote keyless entry
transmitter supplied with your vehicle.
If your vehicle is equipped with the DIC, the numbers on
the back of your transmitter correspond to DRIVER #1
and DRIVER #2 on the DIC. For more information
seeDriver Information Center (DIC) on page 3-47.
W(Unlock):Press this
button to unlock the
driver’s door. Press it again
within ve seconds to
unlock all of the doors. See
“Security Feedback”
later in this section.
Pressing the unlock button may also illuminate the
interior lamps. SeeEntry Lighting on page 3-18.
Q(Lock):Press this button to lock all doors.
V(Trunk):Press this button to unlock the trunk
when the ignition is in OFF. It will also work when the
ignition is on, but only while the transaxle is in PARK (P)
or NEUTRAL (N).
L(Instant Alarm):Press this button to make the
horn sound and the headlamps and taillamps ash for
up to 30 seconds. This can be turned off by pressing the
instant alarm button again or by turning the ignition
on. If your vehicle is equipped with the content
theft-deterrent feature, you may also turn off the instant
alarm by unlocking the vehicle with a key.
2-6

Personalization Features
The following features, if available on your vehicle, can
be programmed to each driver’s preference.
Automatic Door Locks:This feature programs
your door locks to automatically lock or unlock
when shifting in and out of PARK (P).
Security Feedback:This feature provides feedback
to the driver when the vehicle receives a command
from the remote keyless entry transmitter.
Delayed Locking:This feature allows for a
ve second delay in locking the doors after
the closing of the last door.
Perimeter Lighting:This feature provides for the
daytime running lamps (DRL), parking lamps and
the back-up lamps to turn on when the unlock
button on the remote keyless entry transmitter
is pressed.
For more detailed information and programming
instructions, refer toDIC Vehicle Personalization on
page 3-51for each individual feature listed above.
Security Feedback
This feature provides feedback when the vehicle
receives a command from the remote keyless entry
transmitter. Feedback is only provided if all doors are
closed, the ignition is off and the Retained Accessory
Power (RAP) is inactive. One of the following modes
may be selected for each transmitter:
Mode 1:No feedback when locking or
unlocking vehicle.
Mode 2:Parking lamps, back-up lamps and the DRL
exterior lamps will ash twice when unlocking the vehicle
and ash once when locking the vehicle.
Mode 3:Horn chirps when all doors are unlocked
(second time the button is pressed) and when locking
the vehicle.
Mode 4:Parking lamps, back-up lamps and the DRL
exterior lamps will ash twice each time the unlock
button is pressed; the horn chirps when all doors are
unlocked. Parking lamps and the DRL exterior
lamps ash once and the horn chirps when locking
the vehicle.
The exterior lamps will not ash if the manual parking
lamps are on.
2-7

If your vehicle is equipped with the DIC, you must
program this feature using it. SeeDriver Information
Center (DIC) on page 3-47.
If your vehicle is not equipped with the DIC, do the
following to change to another mode:
1. Close all the doors and turn the ignition on. Keep
all doors closed throughout this procedure.
2. Press and hold LOCK on the driver’s power door
lock switch throughout this procedure. All the
doors will lock.
3. Press the trunk button on the transmitter. The
security feedback will remain in its current mode.
The horn will chirp as feedback.
4. Press the trunk button on the transmitter again.
Each time the trunk button is pressed, the security
feedback will advance to the next mode, and
the horn will chirp.
5. Release the power door lock switch. The
security feedback will remain in the most current
mode selected.This procedure only changes the mode for the
transmitter used to change this setting.
To verify the mode selected, remove the key from the
ignition and close all of the doors after you have
exited the vehicle. Press the lock button on the
transmitter to be veried and conrm the appropriate
feedback. Repeat with the unlock button.
Matching Transmitter(s) to Your
Vehicle
Each remote keyless entry transmitter is coded to
prevent another transmitter from unlocking your vehicle.
If a transmitter is lost or stolen, a replacement can
be purchased through your dealer. Remember to bring
any remaining transmitters with you when you go to
your dealer. When the dealer matches the replacement
transmitter to your vehicle, any remaining transmitters
must also be matched. Once your dealer has coded the
new transmitter, the lost transmitter will not unlock
your vehicle. Each vehicle can have a maximum of four
transmitters matched to it.
See your dealer to have additional transmitters matched
to your vehicle.
2-8

If your vehicle is equipped with the DIC, you must use
it to program this feature. SeeDriver Information
Center (DIC) on page 3-47.
If your vehicle is not equipped with the DIC, use the
following procedure to change modes:
1. Close all the doors and turn the ignition to RUN.
Keep all doors closed throughout this procedure.
2. Press and hold LOCK on the driver’s power door
lock switch throughout this procedure. All the
doors will lock.
3. Press the lock button on the remote keyless entry
transmitter. The automatic door locks will remain in
the current mode.
4. Press the lock button on the transmitter again. Each
time this button is pressed, the mode will advance
by one, going from 3 to 0 to 1, etc.
The door locks will cycle according to the mode
entered while customizing the memory door locks.
(Mode 0 has no feedback.)
5. Release the power door lock switch. The
automatic door locks will remain in the most
recent mode selected.
This procedure only changes the mode for the
transmitter used to change this setting.Rear Door Security Locks
Your vehicle is equipped
with rear door security
locks that prevent
passengers from opening
the rear doors of your
vehicle from the inside.
To use one of these locks, do the following:
1. Open the rear door you want to lock.
2. Move the lever located on the inside door edge, all
the way to the lock symbol.
3. Close the door.
4. Do the same thing to the other rear door lock.
The rear doors of your vehicle cannot be opened from
the inside when this feature is in use.
2-13

To open a rear door when the security lock is on, do
the following:
1. Unlock the door.
2. Open the door from the outside.
If you do not cancel the security lock feature, adults or
older children who ride in the rear seat will not be
able to open the rear door from the inside. You should
let adults and older children know how these security
locks work, and how to cancel the locks.
To cancel the rear door lock, do the following:
1. Unlock and open the door from the outside.
2. Move the lever all the way to the unlock symbol.
3. Do the same for the other rear door.
The rear door locks will now work normally.
Lockout Protection
The power door locks will not work if the key is in the
ignition and a door is open. You can override this feature
by holding the driver’s side power door lock switch for
more than three seconds.
Trunk
{CAUTION:
It can be dangerous to drive with the trunk lid
open because carbon monoxide (CO) gas can
come into your vehicle. You cannot see or
smell CO. It can cause unconsciousness and
even death. If you must drive with the trunk lid
open or if electrical wiring or other cable
connections must pass through the seal
between the body and the trunk lid:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. See Climate Control
System in the Index.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-31.
2-14

Trunk Lock Release
To unlock the trunk from the outside, insert the master
key and turn it clockwise.
Remote Trunk Release Lockout
The TRUNK release button
is located on the driver’s
door trim map pocket.
Push this button to open the trunk. The transaxle must
be in PARK (P) or NEUTRAL (N) for the remote
trunk release button to work.
To lock the trunk from inside your vehicle, insert the
master key and turn it clockwise to LOCK. The VALET
key will not work in this procedure.
Trunk Security Override
The remote keyless entry transmitter will unlock the
trunk even if the trunk release lockout switch is in LOCK.
Emergency Trunk Release Handle
Notice:Using the emergency trunk release handle
as a tie-down or anchor point when securing
items in the trunk may damage it. Use the
emergency trunk release handle only to help you
open the trunk lid.
There is a glow-in-the-dark emergency trunk release
handle located near the trunk latch. This handle will glow
following exposure to light. Pull the release handle up
to open the trunk from the inside.
2-15

Theft-Deterrent Systems
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft-deterrent
features, we know that nothing we put on it can make it
impossible to steal.
Content Theft-Deterrent
Your vehicle may have a
content theft-deterrent
alarm system. With
this system, the
SECURITY light, located
on the instrument
panel cluster, will ash as
you open the door if
your ignition is off.
This light reminds you to activate the content
theft-deterrent system when leaving your vehicle.
To activate the system, do the following:
1. Open the door.
2. Lock the door with the power door lock switch or
with the remote keyless entry transmitter. The
SECURITY light should come on and stay on.3. Close all doors. The SECURITY light should go off
after about 30 seconds. The alarm is not armed
until the SECURITY light goes off.
If a door is opened without the key or remote keyless
entry transmitter, the alarm will go off. Your vehicle’s
lamps will ash and the horn will sound for 30 seconds.
The lamps and horn will then turn off to save
battery power.
Remember, the content theft-deterrent system will not
activate if you lock the doors with a key or use the
manual door lock. It activates only if you use a power
door lock switch with a door open, or with the remote
keyless entry transmitter. You should also remember
that you can start your vehicle with the correct ignition
key if the alarm has been set off.
Here is how to avoid setting off the alarm by accident:
If you do not want to activate the theft-deterrent
system, the vehicle should be locked with the
door key after the doors are closed.
Always unlock a door with a key, or use the remote
keyless entry transmitter. Unlocking a door any
other way will set off the alarm.
If you set off the alarm by accident, unlock the driver’s
door with your key. You can also turn off the alarm
by pressing the unlock button on the remote keyless
entry transmitter. The alarm will not stop if you try
to unlock a door any other way.
2-18