Buick 2000 Century - Manual (Page 82)

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 “Resynchronization” 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.