1998 Cadillac DeVille Owner's Manual - Page 80
1998 Cadillac DeVille Manual
Page 80 highlights
Battery Replacement Under normal use, the battery your remote keyless in entry transmitter should last about years. four You can tellthe battery is weak if the transmitter won't work at the normal range in any location. If you have to get closeto your vehicle before the transmitter works, it's probably timeto change the battery. I NOTICE: When replacing the battery, use care not to touch any of the circuitry. Static from your body transferred to these surfaces may damage 1. Use the round endof the door key or a coin to pry the transmitter. open the transmitter. 2. Once the transmitteris separated, use a pencil to Do remove the old battery. not use a metal object. 2-9