2000 BUICK CENTURY key battery

1-29 Servicing Your Air Bag-Equipped Vehicle
Air bags affect how your vehicle should be serviced.
There are parts of the air bag systems in several places
around your vehicle. Your dealer and the service manual
have information about servicing your vehicle and the
air bag systems. To purchase a service manual, see
ªService and Owner Publicationsº in the Index.
CAUTION:
For up to 10 seconds after the ignition key is
turned off and the battery is disconnected, an air
bag can still inflate during improper service. You
can be injured if you are close to an air bag when
it inflates. Avoid yellow connectors. They are
probably part of the air bag systems. Be sure to
follow proper service procedures, and make sure
the person performing work for you is qualified
to do so.
The air bag systems do not need regular maintenance.
Center Passenger Position
Lap Belt
If your vehicle has a bench seat, someone can sit in the
center position.

2-6
The operating mode of the programmable automatic
power door locks will be changed when the driver
performs the following:
1. Turn the ignition key to RUN.
2. Close all of the doors.
3. Apply your regular brakes.
4. Press and hold the power door lock switch. While
holding the door lock switch, move the shift lever
out of and back into PARK (P).
After an initial transaxle cycle, each additional cycle
will advance the operating mode by one, starting from
the current operating mode. During this procedure, the
automatic door lock and unlock functions will operate as
defined by each mode listed previously, providing the
driver with feedback of the current operating mode. If
cycled beyond Mode 4, the vehicle will enter operating
Mode 1. When the door lock switch is released, the
vehicle will remain in the most recent operating mode.
Disconnecting the vehicle's battery for up to a year will
not change the programmed mode of the programmable
automatic power door locks.Rear-Door Child Security Locks
Your vehicle is equipped
with rear
-door child
security locks that help
prevent passengers from
opening the rear doors of
your vehicle from the
inside. To use one of
these locks:
1. Open one of the rear doors.
2. On the inside of the rear door will be a lock. Insert
your key into this lock and turn it upward. This will
engage the safety lock. To disengage the feature, turn
the lock downward.
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. If you want to open the
rear door when the security lock is on, unlock the door
from the inside and then open the door from the outside.

2-8
At times you may notice a decrease in range. This is
normal for any remote keyless entry system. If the
transmitter does not work or if you have to stand closer
to your vehicle for the transmitter to work, try this:

Check the distance. You may be too far from your
vehicle. You may need to stand closer during rainy
or snowy weather.

Check the location. Other vehicles or objects may be
blocking the signal. Take a few steps to the left or
right, hold the transmitter higher, and try again.

Check to determine if battery replacement is
necessary. See the instructions that follow.

If you're still having trouble, see your dealer or a
qualified technician for service.Operation
Press UNLOCK once to
unlock the driver's door and
to turn on the interior lamps
(see ªIllumination on
Remote Activationº in the
Index for more details).
Press UNLOCK again within five seconds to unlock all
the doors. To lock all doors, press LOCK. To unlock the
trunk, press the button with the trunk symbol on the
remote keyless entry transmitter. The trunk will only
unlock if your transaxle is in PARK (P).

2-10
This will start the customization mode. While in the
customization mode, the feature will sound the number
of chimes corresponding to the current security feedback
lock mode.
Each additional press of the remote keyless entry
transmitter LOCK button will cause your vehicle to
advance the lock mode by one, starting from the current
lock mode. If cycled beyond lock Mode 4, the vehicle
will enter lock Mode 1. During this procedure, the
feature will sound the number of chimes corresponding
to the current lock mode, providing you with feedback.
When the door lock switch is released, the vehicle will
remain in the most recent lock mode.
The operating mode of the security feedback unlock
feature will be changed when you perform the following
sequence with your vehicle's doors closed and the
ignition key in RUN:

Press and hold the power door unlock switch. While
holding the door unlock switch, press and release the
remote keyless entry transmitter unlock button. This
will start the customization mode.

While in the customization mode, the feature will
sound the number of chimes corresponding to the
current unlock mode.Each additional press of the remote keyless entry
transmitter unlock button will cause your vehicle to
advance the UNLOCK mode by one, starting from the
current unlock mode. If cycled beyond unlock Mode 4,
the vehicle will enter unlock Mode 1. During this
procedure, the feature will sound the number of chimes
corresponding to the current unlock mode, providing
you with feedback. When the door unlock switch is
released, the vehicle will remain in the most recent
unlock mode.
Disconnecting the vehicle's battery for up to a year will
not change the programmed mode of the lock and
unlock security feedback features.
Delayed Locking
Delayed locking allows the doors to be locked while
passengers are exiting the vehicle. This feature also
provides a brief time period after all the doors are
closed, but before the doors are locked, in which the
doors may be reopened. Delayed locking is user
programmable for enabling or disabling the feature.

2-11
Delayed locking is activated when a door lock switch is
pressed while the key is not in the vehicle's ignition, and
a door is open. The door lock switch may be either the
lock switch on the door or on the remote keyless entry
transmitter (see ªRemote Keyless Entryº later in this
section for more details). The doors do not lock when
the lock switch is pressed, but instead, three chimes are
heard. These chimes indicate that the delayed locking
feature has been activated.
You have three actions possible once delayed locking
is activated:

Cancel the delayed locking by pressing the unlock
switch or by fully inserting the key in the ignition.

Override the delayed locking feature and lock the
doors immediately by pressing the lock switch a
second time.

Let the delayed locking feature complete the locking
of the vehicle.
If you wish to let the delayed locking feature complete
the locking of the vehicle, no additional action is
required. The delayed locking feature will lock the doors
automatically after all the doors have been closed for a
period of five seconds. During this five second period,
any door may be reopened, at which time the three
possible actions shown above are again available.You may also customize your vehicle to activate the
delayed locking feature as described above, or you
may choose to completely disable the feature at all
times. If disabled, the power door locks will activate
immediately when a power door lock switch is pressed.
The enabled/disabled state of the delayed locking
feature will be toggled when you perform the following
sequence with the doors closed and the ignition key
in RUN:
1. Apply your regular brakes.
2. Press and hold the power door unlock switch. While
holding the door unlock switch, move the shift lever
out of and back into PARK (P).
After an initial transaxle cycle, each additional cycle will
toggle the enable/disable state of the delayed locking
feature. During this procedure, the chime will sound,
providing you with feedback. In Mode 1, a single chime
will be heard if the delayed locking feature is disabled.
In Mode 2, two chimes will be heard if the feature is
enabled. When the door unlock switch is released, the
vehicle will remain in the most recent operating mode.
Disconnecting the vehicle battery for up to a year will
not change the programmed mode of the delayed
locking feature.

2-12
Illumination on Remote Activation
This feature provides interior lighting when a remote
keyless entry door unlock command is received and
executed by your vehicle. Your ignition must be off for
the illumination on remote activation feature to work.
The interior lamps will light until either the ignition is
turned to RUN or a period of 40 seconds has elapsed.
If a door is opened during the illumination period, the
timed lighting will be canceled, and the interior lamps
will remain on since a door is open.
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 only four transmitters
matched to it.
Battery Replacement
Under normal use, the battery in your remote keyless
entry transmitter should last about three years.
You can tell the battery is weak if the transmitter won't
work at the normal range in any location. If you have to
get close to your vehicle before the transmitter works,
it's probably time to change the battery.
NOTICE:
When replacing the battery, use care not to
touch any of the circuitry. Static from your
body transferred to these surfaces may
damage the transmitter.

2-13
To replace the battery:
1. Insert a flat object like a dime into the slot on the
back of the transmitter. Gently pry apart the front
and back.
2. Remove the old battery and replace it with the new
one. (Use type CR2032 or an equivalent.) Make sure
the positive (+) side of the battery is facing down.
Do not use a metal object to remove the old battery.
3. Snap the top and bottom together, making sure the
halves are together tightly so water won't get in.4. Test the operation of the transmitter with
your vehicle. If the transmitter does not
work, try resynchronizing the transmitter.
(See ªResynchronizationº following.)
5. Resynchronize and then test the transmitter.
Resynchronization
Resynchronization may be necessary due to the
security method used by this remote keyless entry
system. The transmitter does not send the same
signal twice to the receiver. The receiver will not
respond to a signal it has previously been sent.
This prevents someone from recording and
playing back the signal from the transmitter.
To resynchronize the transmitter with the receiver,
do the following:
1. Stand close to your vehicle.
2. Simultaneously press and hold the LOCK and
UNLOCK buttons on the remote keyless entry
transmitter for about seven seconds.
There will be an audible confirmation when
resynchronization is done.
If the locks do not cycle, see your dealer for service.

2-19
Starting Your Engine
Move your shift lever to PARK (P) or NEUTRAL (N).
Your engine won't start in any other position
-- that's a
safety feature. To restart when you're already moving,
use NEUTRAL (N) only.
NOTICE:
Don't try to shift to PARK (P) if your vehicle is
moving. If you do, you could damage the
transaxle. Shift to PARK (P) only when your
vehicle is stopped.
Starting Your V6 Engine
1. Without pushing the accelerator pedal, turn your
ignition key to START. When the engine starts, let
go of the key. The idle speed will go down as your
engine gets warm.
NOTICE:
Holding your key in START for longer than
15 seconds at a time will cause your battery to
be drained much sooner. And the excessive heat
can damage your starter motor. Wait about
15 seconds between each try to help avoid
draining your battery or damaging your starter.
2. If your engine won't start (or starts but then stops),
it could be flooded with too much gasoline. Try
pushing your accelerator pedal all the way to the
floor and holding it there as you hold the key in
START for up to 15 seconds. This clears the extra
gasoline from the engine.