Operation; Matching Transmitter(S) To Your Vehicle; Battery Replacement - Oldsmobile cutlass supreme 1996 Owner's Manual

Operation
Press UNLOCK once to unlock the driver's door. Press
UNLOCK again within five seconds to unlock all the
doors. The interior lamps will come on (see "Illuminated
Entry" in the Index for more details).
To lock all doors, press DOOR. To unlock the trunk,
press the vehicle symbol on the transmitter. The trunk
will only unlock if your transaxle is in PARK (P).
Matching Transmitter(s) To Your Vehicle
Each key chain 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 retailer. Remember to bring any remaining
transmitters with you when you go to your retailer.
When the retailer matches the replacement transmitter to
your vehicle, any remaining transmitters must also be
matched. Once the new transmitter is coded, the lost
transmitter will not unlock your vehicle. Each vehicle
can have only two transmitters matched to it.
Battery Replacement
I
Under normal use, the batteries in your key chain
transmitter should last about two years.
You can tell the batteries are weak if the transmitter
won't work at the normal range in any location. If you
have to get close to your vehicle before the transmitter
works, it's probably time to change the batteries.