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Old 01-20-2013, 07:03 PM
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jvr826 jvr826 is online now
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Location: In the woods. Santa Cruz County, CA
 
Join Date: Apr 2002
Posts: 8,833
Mein Auto: 05 330ci 6MT
These cars are very sensitive to electrical anomalies. Why not just check the easy stuff first?

I was in a friend's M3 one evening, started and ran fine and had no symptoms... ever. We made one quick stop and when we went to leave, it was dead as dirt. The battery just crapped out at that moment with no warning.

You said you have a new battery, but have you checked it's charge?
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