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      01-29-2013, 08:56 PM   #2
kenwelch
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Drives: 2008 E92 M3 M-DCT
Join Date: Dec 2006
Location: Mission Viejo, CA

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Thought these links might help.
Battery Safety Terminal = BST
Look at this thread and pictures
http://www.e90post.com/forums/showthread.php?t=6313

Watch this video (start about 1:30 in video)


Pop your battery cover and you might see (like the pictures in the thread) that the BST has activated which will cut power to the main engine harness.