2002 BUICK CENTURY ignition

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
Before 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
Mode 1. When the door lock switch is released, the
vehicle will remain in the most recent lock mode.

2-13
Before 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 Mode 4, the vehicle will enter
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 for the lock and
unlock security feedback features.

2-14
Delayed Locking
Delayed locking allows the doors to be locked while
passengers are exiting the vehicle. This feature also
allows for you to re
-enter the vehicle after the doors
have been closed and locked. 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.
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:
1. Close the doors.
2. The ignition key should be in RUN.
3. Apply your regular brakes.
4. 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.

2-15
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 for the delayed
locking feature.
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 this 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 a maximum of four
transmitters matched to it.

2-20 Trunk Release Sensor TrapAlert
System
(If Equipped)
Your vehicle may have a sensor located on the underside
of the filler panel inside the trunk.The sensor is designed to open the trunk automatically.
If the sensor detects motion and a difference in
temperature in the trunk, the sensor will sound the horn
if the ignition is in OFF. There will be three short chirps
and a pause repeated for up to two minutes. After one
minute, the trunk latch will release. If the ignition is not
in OFF, the trunk latch will not release automatically
and the horn will not sound.
To cancel the horn alarm and automatically release
the trunk lid before two minutes are up, turn the
ignition to ON.
Do not cover the sensor with items you put into the
trunk or with add
-on accessory equipment. If the
sensor's field of view is blocked, it will not detect
motion and will not function properly.
Be sure to secure items in your trunk so that they
won't move around and cause the trunk to open.

2-21
Disabling the Trunk Release Sensor
A. Sensor Lens
B. Disable Switch
Because the sensor detects motion, there are times when
you may want to turn off the trunk sensor so that the
motion of your vehicle or items in the trunk won't cause
the trunk to open, such as the following:

When your vehicle is transported on a car ferry,

when your vehicle is towed, or

when you will be loading items through the opening
in the split folding rear seat (if equipped).Next to the sensor lens, there is a disable switch you can
use to turn off the trunk release sensor. To turn off the
sensor, turn the ignition to ON and press the switch next
to the lens for two seconds. The horn will chirp once
when the sensor is turned off. When the sensor is off, the
light in the switch will flash. The DOOR/TRUNK light
will flash for one minute each time the ignition is turned
on as a reminder that the sensor is turned off. See
ªDoor/Trunk Lightº in the Index.
To turn the sensor on again, press the switch again
or open the trunk. When the trunk is opened, the
sensor is automatically turned back on. If the sensor
is turned back on with the disable switch, the horn
will chirp twice.
Servicing the Trunk Release Sensor
The sensor lens should be inspected periodically.
If the lens is dirty, wipe it gently with a clean, soft
cotton cloth.
If there is an electrical problem with the sensor, the
SERVICE VEHICLE SOON light will appear in the
instrument panel cluster. There are other possible
reasons for this light to appear. Be sure to see your
dealer as soon as possible. See ªService Vehicle Soon
Lightº in the Index for more information.

2-22
Theft
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. However, there are ways you
can help.
Key in the Ignition
If you leave your vehicle with the keys inside, it's an
easy target for joy riders or professional thieves
-- so
don't do it.
When you park your vehicle and open the driver's door,
you'll hear a chime reminding you to remove your key
from the ignition and take it with you. Always do this.
Your steering wheel will be locked, and so will your
ignition and transaxle. And remember to lock the doors.
Parking at Night
Park in a lighted spot, close all windows and lock your
vehicle. Remember to keep your valuables out of sight.
Put them in a storage area, or take them with you.
Parking Lots
Even if you park in a lot where someone will be
watching your vehicle, it's still best to lock it up and
take your keys. But what if you have to leave your
ignition key?

If possible, park in a busy, well
-lit area.

Put your valuables in a storage area, like your trunk
or glove box.

Be sure to close and lock the storage area.

Close all windows.

Lock the glove box.

Lock all the doors except the driver's.

Then take the door key and remote keyless entry
transmitter with you.

2-23
PASS-Key
II
Your vehicle is equipped
with the PASS
-Key II
(Personalized Automotive
Security System)
theft
-deterrent system.
PASS
-Key II is a passive
theft
-deterrent system.
It works when you insert
or remove the key from
the ignition.
PASS
-Key II uses a resistor pellet in the ignition key
that matches a decoder in your vehicle.
When the PASS
-Key II system senses that someone is
using the wrong key, it shuts down the vehicle's starter and
fuel systems. For about three minutes, the starter won't
work and fuel won't go to the engine. If someone tries to
start your vehicle again or uses another key during this
time, the vehicle will not start. This discourages someone
from randomly trying different keys with different resistor
pellets in an attempt to make a match.
The ignition key must be clean and dry before it's inserted
in the ignition or the engine may not start. If the engine
does not start and the SECURITY light is flashing, the key
may be dirty or wet. Turn the ignition off.Clean and dry the key. Wait about three minutes and try
again. If the starter still won't work, and the key appears
to be clean and dry, wait about three minutes and try
another ignition key. At this time, you may also want to
check the fuse (see ªFuses and Circuit Breakersº in the
Index). If the starter won't work with the other key, your
vehicle needs service. If your vehicle does start, the first
ignition key may be faulty. See your dealer or a
locksmith who can service the PASS
-Key II.
If you accidentally use a key that has a damaged or
missing resistor pellet, the starter won't work. The
SECURITY light will then come on. But you don't have
to wait three minutes before trying another ignition key.
See your dealer or a locksmith who can service the
PASS
-Key II to have a new key made.
If you're ever driving and the SECURITY light comes
on, you will be able to restart your engine if you turn it
off. Your PASS
-Key II system, however, is not working
properly and must be serviced by your dealer. Your
vehicle is not protected by the PASS
-Key II system.
If you lose or damage a PASS
-Key II ignition key, see
your dealer or a locksmith who can service PASS
-Key II
to have a new key made. Also, see ªRoadside
Assistanceº in the Index for more information.