I'm there with you on similar issues on my wife's '98 Sebring. I haven't been able to duplicate it, but she's told me that when she unlocks the driver door with the key and opens it, the alarm will go off. This just started after I oiled up the door lock, it was very hard to turn. I know there is a switch attached to the lock cylinder on hers, not sure about the LHS. I wonder if the contacts got oiled and aren't working right. I did notice though, after she mentioned the problem, when I went out to check it I turned the key in the driver's lock and could feel the mechanism move and about 5 seconds later, heard an electrical type noise, like a motor or actuator. I think she just opened the door too quickly before it disarmed itself. As far as disarming the alarm, like disabling it more permanetly, I haven't seen any sugestion on that. If she keeps having issues, that is my next search.
The name's Chris but the step-kids call me something much worse!
Favorite Quote: "A man's got to know his limitations."-Clint Eastwood as "Dirty" Harry Callahan in Magnum
Second favorite quote: "Another day, another drama."-Me (2006)
Third favorite quote: "I live a boring life. Its everyone in it that makes it interesting."-Me (2006)