A problem that has happened twice in the last 2 months is that after parking my diesel Smart for half an hour or so, the engine won't start. The alternator and battery are good as it attempts several times to turn over the engine. After towing on a flat bed, it starts fine. Obviously the dealer is not finding problems. The bouncing on the flat bed seems to "repair" any loose connections or is this a bad area to look at? Are there special diagnostic tools that can trace the CAN history for intermittent loss of signals? After 13 years and 210,000 km I want to keep it going.