I own a 2000 E320 SW and on five occasions when I've attempted to start the car, it would crank over but would not start. After the car sits for several days it will start. I've taken the car to the nearest Mercedes dealer, 200 mile round trip, but they couldn't diagnose and fix the problem. Please email me, georgereddish@nehalemtel.net, if you have any suggestions. Thank you.