Buick 1998 Century Owner's Manual page 84

Disconnecting the vehicle's battery for up to a year will
not change the programmed mode of the Programmable
Automatic Power Door Locks.
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 the enabling or disabling of
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 the lock button on the remote
keyless entry transmitter (see "Remote Keyless Entry"
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:
1. Cancel the Delayed Locking by pressing the unlock
switch or by fully inserting the key in the ignition.
2. Override the Delayed Locking feature and lock the
doors immediately by pressing the lock switch a
second time.
3. 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.
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