I had a similar problem about a year ago. When I wanted to drive home from a tourist destination, the engine did not start anymore. When I turned the key, nothing happened. Nothing! Have tried it over and over again (maybe 50 times). I tried to reset the ECU by disconnecting the battery. Nothing helped, the starter did not move. Thought on a broken battery and called the breakdown service. When I was waiting for the breakdown service, I tried again and suddenly, the engine started immediately. The breakdown service was canceled and I drove home without problems. I've never had a problem like this, since then.
