Originally Posted by mckim
had to leave my car at work today. 2007 e90. it was -14 here in chicago, and it labored to turn over this morning when i went to work and when i went to go home, the lights, radio work but it wouldn't turn over. then it started making clicking sounds in the car like the door locks where going up and down and the instrument cluster got all wonky looking. too the fob out and reinserted and everything seemed fine again until i tried to start it. gave up and got a ride home, didn't want to freeze any more than i did and the earliest i could get a tow truck is tomorrow morning any ways. i don't think it's the starter, at least, i hope it isn't. think it is just this sub-zero cold weather making it difficult to turn over.
I am in Chicago too. Change your battery. Changed my battery in August; no problems to date. http://www.e90post.com/forums/showth...highlight=Maxx
If no codes are being thrown use Chevron Techron fuel injector cleaner (concentrate). It solves rpm fluctuating upon cold start-up. Also, for most BMW problems start off by scanning your car with the Peake Research Tool. It contains the actual BMW codes. If you want to register a newly installed battery for free (just buy a $10 cable) and google/download BMWLogger