I have a 2002 SLK320 that will randomly die while driving down the road, not start after running in the store or something.. Sometimes, it will start back up, and other times it can take up to 3hrs or more. It did this about a year ago, and when I took it in, they couldn't figure out what was wrong, since of course, it was fine for them. Finally, it died and I had it towed. It turned out to be the fuel pump. Well...here I am a year later, and it's doing the same thing. I had the battery replaced, and that worked for a few weeks. My car has been in the shop for 2 weeks, and I have no answers. It has done the no start thing for them, and when they hooked it up to the computer, they got a couple transmission type codes that made no sense to them based on the symptoms I had described. Has anybody experienced a similiar problem? Just sooo frustrating!