Oldsmobile 1999 Aurora - Manual (Page 71)

yellow blue
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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.
For battery replacement, use a Duracell
R
battery, type
DL - 2032, or a similar type.
To replace the battery:
1. Insert a coin into the notch near the key ring. Turn
the coin counterclockwise to separate the two halves
of the transmitter.
2. Once the transmitter is separated, use a pencil eraser
to remove the old battery. Do not use a metal object.
3. Replace the battery as the instructions under the
cover indicate.
4. Snap the transmitter back together tightly to be sure
no moisture can enter.
5. Test the operation of the transmitter with your
vehicle. If the transmitter does not work,
resynchronize the transmitter.
Resynchronization
If only the instant alarm button works, the transmitter
needs to be resynchronized to the receiver. Do this by
pressing and holding both the LOCK and UNLOCK
buttons on the transmitter for about eight seconds. You
must be within range of the vehicle.
Once the transmitter has been resynchronized, the horn
will chirp and the exterior lamps will flash once. The
system should now operate properly.