1996 Ford Taurus Owner's Manual - Page 136

NOTE: The operating range of the remote entry system can also be affected by weather conditions (such as very cold temperatures) or structures around the vehicle (buildings, other vehicles, radio and TV towers, etc.). Typical operating range will allow you to be up to 33 feet (10 meters) away from your vehicle. The transmitter can be snapped apart to replace the batteries by twisting a thin coin between the two halves of the transmitter. DO NOT TAKE THE FRONT PART OF THE TRANSMITTER APART. When installing the new batteries, be sure to place the positive (+) side down as marked. Snap the two halves back together. Replacing the batteries Replacing lost transmitters In the event a transmitter is lost, you should take all your vehicle's transmitters to your dealer to have the remote entry system deprogrammed for the lost transmitter. This is necessary to prevent further unauthorized use of the lost transmitter. You can also purchase additional transmitters (up to 4 transmitters can be used) from your dealer. You will need to take all your transmitters to the dealer so they can program them to the remote entry system all at the same time. 137