Michael Schumacher said a misunderstanding at the beginning of the Hungarian Grand Prix was behind the reason for him causing the initial start to be aborted.

Yellow lights flashed up on the lightning gantry when the field lined up for the start, with Schumacher turning off his engine.

With the field then waved round for a second green flag lap, the German was left stranded on the grid and was forced to start from the pits, with a penalty for speeding in the pits and a puncture only compounding his misery.

Ultimately the seven-time champion then retired as a precaution in the closing stages while down in 18th place.

"Today was obviously one of those races that you will not look back at for very long," he said. "Our engine temperatures were very high before the start, and when the yellow lights came on, I switched the engine off.

"After I had started from the pit lane, I picked up a penalty and then a puncture. So all in all, the beginning of the race was not very pleasant for us. Everything you do not need came together.

"We did not have full telemetry before the start and during the period of overheating, and this is why we finally decided to retire so as not risk any damage which might make us suffer in the next race. Now we can now check the car properly before the break and prior to Spa.

"This weekend is not one to remember, but then there are weekends like this which you can only accept. I am sure we will be looking much better in the next races to come."

Mercedes team boss Ross Brawn said the team was unsure what was behind Schumacher's loss of telemetry and that the safest option had been to retire his car.

"Michael started from the pit lane, incurred a penalty and then had a puncture so it wasn't exactly an ideal start to the afternoon," he said. "During that period, we lost all telemetry on his car, and subsequently had various problems during the race which we weren't entirely sure what they were, therefore we decided to retire the car."