2001 BUICK CENTURY door lock

2-7 Power Door Locks
Your vehicle is equipped
with front power door lock
switches. Press a power
door lock switch to lock
or unlock all doors.
The rear doors do not have power door lock switches.
There is a lever on each rear door that is used to
manually lock or unlock each door. Manual locks
cannot lock or unlock all doors.
Programmable Automatic Power
Door Locks
Programmable automatic power door locks is a standard
feature that is intended to provide enhanced security and
convenience by automatically locking and unlocking
doors. This feature provides four operating modes.Programmable Modes
Your vehicle can be programmed to one of the
following modes.
Mode 1: No automatic door lock or unlock.
Mode 2:

Automatic all
-door lock when the transaxle is shifted
out of PARK (P); no automatic door unlock.

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.
Mode 3:

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

Automatic all
-door 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.

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.

2-9 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.
Lockout Protection Feature
This feature prevents a driver who has left the key in the
vehicle's ignition from locking the doors by using the
power door locks while any door is open. The feature
works by disabling the power door locks when a key is
in the ignition and any door is open.
You may override the lockout protection feature by
holding the power door lock switch in the lock position
for more than three seconds while the key is in the
ignition and any door is open.
Remember, this feature can't guarantee that you'll never
be locked out of your vehicle. If you use the manual
door lock or if you don't leave the key in the ignition,
you could still lock your keys inside your vehicle.
Always remember to take your keys with you.
Leaving Your Vehicle
If you are leaving the vehicle, take your keys, open your
door and set the locks from inside. Then get out and
close the door. (Also see ªDelayed Lockingº in this
section for more information.)

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.

2-11 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).Instant Alarm
This feature allows you to activate an alarm by pressing
a button on the remote keyless entry transmitter.
Your ignition must be off for the instant alarm to work.
When you press the horn button on the remote keyless
entry transmitter, the headlamps will flash, the horn will
honk repeatedly, and the interior lamps will illuminate,
attracting attention if you need it. The alarm will
continue until one of the following occurs:

You press the alarm button on the remote keyless
entry transmitter a second time,

the ignition is in RUN, or

an alarm period of about two minutes has elapsed.
Security Feedback
Security feedback provides audible and/or visible
feedback that a remote keyless entry lock or unlock
command has been received and executed. The ignition
must be off for this feature to work.
You may select one of four operating modes for reception
of a lock command. You may also select one of four
operating modes for reception of an unlock command.
The selection and programming of the lock and unlock
operating modes are independent of each other.

2-12
Programmable Modes
Your vehicle can be programmed to one of the
following modes.
Mode 1: No Verification
Mode 2: Horn Chirp only
Mode 3: Headlamp Flash only
Mode 4: Horn Chirp and Headlamp Flash
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
lock 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
lock position.3. While holding the door lock switch in the lock
position, press and release the remote keyless
entry transmitter LOCK button. This will start the
customization mode. While in the customization
mode, the feature will sound the number of chimes
corresponding to the current lock 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.)
4. 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.
5. If cycled beyond lock Mode 4, the vehicle will enter
lock Mode 1. When the door lock switch is released,
the vehicle will remain in the most recent lock mode.

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.