I think its the battery. I was working on his car today. (putting my old cd changer into his car). I had the doors open and the lights were on and working fine, but when I went to turn the car on to move it when I was done, it wouldn't crank. Its the original battery and the car now has 53000 miles so I think its time for a new one...the battery in my 98 did the same thing at about the same mileage...I'm gonna take it to Sears tomorrow and get a new one and hopefully the alarm situation will get fixed also.