Wow, I thought my S60 was the only one with this problem. My 2001 S60 (120,000 miles) behaves exactly as you described. It has been doing this on an occasional basis for several years now. Twice it did this while still under warranty. The dealer would tow it to their shop, unload it from the tow truck, get in it and start it right up. They could never find anything wrong and the only thing they did is add some washer on the battery cable termination point under the hood. The battery checked out good and since that time I've replaced the battery and the problem didn't go away. It may go for months without happening or it could happen several times in the same month.
I bought one of those jump start batteries and when this problem occurs I can usually jump start it with that. The really frustrating thing is that I can't always jump start it with this device and in some cases it would not start when connected via jumper cables to another car. If I continue to try or wait several minutes and try again later it usually starts.
This problem can occur during any time of the year, but last winter it was occurring more frequently than I had ever seen. It even occurred when I dropped my car off at the Volvo dealer for other work. I started the car up, drove it 3 or 4 miles to the dealer, and turned it off. The dealer tried to start it 5 minutes later and it wouldn't start. They checked it out and found nothing wrong.
Sunday, July 22nd, 2007 AT 9:16 PM