Quote:
Originally Posted by dnvrdrvr
Thanks - the "trying to start a car that's already started" is the same noise I'm hearing. It seems like there were a few theories in that thread, but nothing definitive. Were you able to figure out the cause? It's happened the last 3 days in a row at cold start. I'm in a heated garage (always 60+) overnight, so I don't think it'd be isolated to cold weather.
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Does it only happen when it's really, really cold outside or does it happen at any temperature. Had a similar problem with an e46 M3 and it would screech big time when it was very cold outside and it was a cold start. IIRC dealer explained it has something to do with belt tensioners.