Ford 1996 Windstar Manual page 155

When you use the remote entry UNLOCK, or PANIC buttons,
the illuminated entry system turns on the interior lights for 25
seconds. You can turn these lights off with the LOCK button or
by turning the ignition to the RUN position.
Replacing the batteries
The remote entry transmitter is powered by two coin type
three-volt lithium 2016 batteries (included) that should last for
several years of normal use. If you notice a significant decrease
in operating range, the batteries should be replaced.
Replacement batteries can be purchased at most pharmacies,
watch stores or at your Ford or Lincoln-Mercury dealer.
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 towers, etc.). Typical
operating range will allow you to be up to 33 feet (10
meters) away from your vehicle.
Replacing the batteries
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.
Features
153