1998 Buick Park Avenue Owner's Manual - Page 79

Under normal use, the battery in your remotekeyless entry transmitter should lastabout four years. You can tell thebattery is weak if the transmitter won't work at the normal rangein any 'location.If you have to get close to your vehicle before the transfitter works, it's probably time to change the battery. To replace the battery: 1. Insert a coin into the notch near the key ring. Turn the coin to the left 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. For battery replacement, use a Duracell@ battery, type DL-2032, or a similar type. 3. Remove and 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. Resynchronize the transmitter by pressing and holding the LOCK and UNLOCK buttons for about eight seconds within range of the vehicle. Once the transmitter is resynchronized, the horn will chirp and the exterior l m p s will flash once.