1997 Mercury Cougar Owner's Manual - Page 103

When you use the remote entry UNLOCK, TRUNK or PANIC controls, the illuminated entry system turns on the interior lights for 25 seconds. You can turn these lights off with the LOCK control or by turning the ignition to the RUN position. The interior lights will not turn off if you have turned them on manually or if a door is open. Replacing the Batteries The remote 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 and TV towers, etc.). Typical operating range will allow you to be up to 33 feet (10 meters) away from your vehicle. Replacing the batteries 101