It just might be the fuel pump relay. It'll die inexplicably, it won't crank, it doesn't store a code. Some of these cars sat in the dockside salt air a long time the first year, and that helped to corrode the relay's solder runs. The (unsealed) relay is a Hungarian bit stashed in the (unsealed) plastic box o' electronics under the hood, over the right tire near the firewall. Mercedes had the same problem, and it might be cheaper & quicker to order from them. Around a $250 part, and easy to replace.
Search it out at Crossfire Forums. It's a well-known problem.
Saturday, October 8th, 2011 AT 9:04 PM