I had the same problem on my 99 SLE. Here is what finally worked. I bought a remote with the same number off ebay for around 20 bucks and when it arrived I dismantled both remotes (the new one off ebay and my old one that wasnt working). I simply replaced the old remotes rubber button insert with the one from the remote I bought on ebay and snaped everything back together. Remote works like new. I think the backing of the buttons themselves becomes worn from use and the more you press on them the less they work. Also sometimes they get dirty and don't provide a good contact with the switch. Anyway, try this and let me know if it works.
Last edited by kvrbonnie; 04-24-2009 at 05:04 PM.