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      10-26-2012, 06:31 AM   #5
ajsalida's Avatar

Drives: 95 M3, 02 R1150GSA, 09 335xi
Join Date: Aug 2010
Location: SW USA

iTrader: (2)

Update to my original post above, I found that trickle charging the battery @ 2 amps for a day or two gets it to a charge level where this does not happen anymore. I think the internal software model is such that it is not accurate WRT charge state of an older battery in fall/winter and it gets into this loop of not charging enough while running.

Before getting a new battery and all the headaches that entails (reprogramming ECU) I'd try giving it an overnight trickle charge or two, thru the under hood posts as above is fine.