Hello Smart community. I bought a Smart 452 Roadster coupé from 3 years ago. He had already 260,000 km on the Tacho. Sporadic he has problems starting. If he jumps, also by towing, he works a few weeks without murmuring. Several times I hoped to have found the error finally: – new starter, since the error often occurred with warm engine – the fuse 1 with 25 amps, cleaned and plugged in again – the mass contact at the gearbox cleaned and re-screwed – the mass tape in the engine compartment replaced – a new battery installed. The error occurs less often since the new starter. However, it is not gone. After the starter is started you hear the petrol pump and the magnetic switch in the starter is not controlled for at least 3 minutes. At some point the control unit then gives up. Currently I have lowered the engine and now all possibilities no more ideas.