change key battery BUICK CENTURY 2001 Owner's Manual

2-8
Mode 4:

Automatic all
-door lock when the transaxle is shifted
out of PARK (P).

Automatic driver's door only unlock when the
transaxle is shifted into PARK (P).

Automatic door relock when any door is unlocked,
opened and then all doors are again closed while the
vehicle is not in PARK (P) or NEUTRAL (N) and
the driver's foot is on the brake pedal.
When your vehicle was shipped from the factory, it was
programmed to Mode 3. The mode to which your
vehicle was programmed may have been changed since
it left the factory. To determine the programmable mode
to which your vehicle is programmed or to program
your vehicle to a different mode, do 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 in the
lock position. While holding the door lock switch in
the lock position, 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.

2-10
Remote Keyless Entry
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.
Your remote keyless entry system operates on a
radio frequency subject to Federal Communications
Commission (FCC) Rules and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.
This device complies with RSS
-210 of Industry Canada.
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation of the device.Changes or modifications to this system by other than
an authorized service facility could void authorization to
use this equipment.
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.

2-13
When your vehicle was shipped from the factory, it was
programmed to Mode 3. The mode to which your vehicle
was programmed may have been changed since it left the
factory. To determine the security feedback unlock mode
to which your vehicle is programmed or to program your
vehicle to a different mode, do the following:
1. Close all doors and turn the ignition key to RUN.
2. Press and hold the power door lock switch in the
unlock position. While holding the door lock switch
in the unlock position, 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. (If you do not wish to change the
current mode, you can either exit the programming
mode by following the instructions listed here or
program the next feature available on your vehicle.)
3. 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.
4. If cycled beyond unlock Mode 4, the vehicle will
enter unlock Mode 1. When the door lock switch is
released, the vehicle will remain in the most recent
unlock mode.The mode you selected is now set. You can either
exit the programming mode by following the previous
instructions or program the next feature available on
your vehicle.
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.
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 earlier 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.

2-14
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 previously, 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.

2-15
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.
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.

2-24
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.
1. With your foot off 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 not more than 15 seconds at a time.
This clears the extra gasoline from the engine.
NOTICE:
Your engine is designed to work with the
electronics in your 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 don't,
your engine might not perform properly.

2-44
You can turn the feature on and off when you perform
the following sequence:
1. Turn the ignition key to RUN.
2. Close all the doors.
3. Press and hold the power door lock switch. While
holding the door lock switch, cycle the headlamp
switch on and then off two times.
4. Release the power door lock switch. These steps
must be carried out in a time period of less than
10 seconds, followed by a delay period of no more
than 10 seconds.
5. Then, press and hold the power door unlock switch.
While holding the door unlock switch, turn the
headlamp switch on and then off two times. Release
the courtesy door unlock switch. These operations
must be carried out in a time period of less than
10 seconds.
After releasing the door unlock switch, a single chime
will be heard if the delayed headlamp illumination
function has been disabled; two chimes will be heard
if the feature has been enabled. Disconnecting the
vehicle's battery for up to a year will not change the
programmed operation of this feature.Interior Lamps
Instrument Panel Brightness Control
You can brighten or dim the instrument panel lights by
moving the LIGHTS knob. If you turn the knob past
MAX, your courtesy or interior lamps will come on.
Courtesy Lamps
When any door is opened, several lamps come on. These
lamps are courtesy lamps. They make it easier to see as
you enter and exit your vehicle. You can also turn these
lamps on by twisting or turning the interior lights knob
all the way to the right.
Illuminated Entry
Your courtesy lamps will come on and stay on for a
set time whenever you press UNLOCK on the remote
keyless entry transmitter.
If you open a door, the lamps will stay on while it's open
and then turn off automatically about 25 seconds after
you close it. If you press UNLOCK and don't open a
door, the lamps will turn off after about 40 seconds.

2-46 Battery Rundown Protection
Your vehicle has a feature to help prevent you from
draining the battery in case you accidentally leave the
interior courtesy lamps, reading/map lamps, visor
vanity lamps, trunk lamp, underhood lamp or glove box
lamps on. If you leave any of these lamps on, they will
automatically turn off after 20 minutes, if the ignition is
in OFF. The lamps won't come back on again until you
do one of the following:

Turn the ignition on,

turn the lamp switch off, then on, or

open a door.
If your vehicle has less than 15 miles (25 km) on the
odometer, the battery saver will turn off the lamps after
only three minutes.
Retained Accessory Power (If Equipped)
With retained accessory power, your power windows,
audio system and sunroof (if equipped) will continue to
work up to 10 minutes after the ignition key is turned
to OFF and before any of the doors are opened.
Mirrors
Adjust all the mirrors so you can see clearly when you
are sitting in a comfortable driving position.
Inside Day/Night Rearview Mirror
To reduce glare from headlamps behind you, pull the
lever at the bottom of the mirror toward you (to the
night position). To return the mirror to the day position,
push the lever away from you.
Inside Day/Night Rearview Mirror with
OnStar and Map Lamps (If Equipped)
This mirror has a lever located at the bottom of the
mirror between the two map lamps. This lever is used to
change the mirror from day to night position. To reduce
glare from headlamps behind you while driving at night,
turn the lever 90 degrees. To return the mirror to the day
position, return the lever to its original position.