Quote:
Originally Posted by Mike Benvo
This is a code you need not worry about unless it continues to pop up over and over again. Just clear the code and carry on...
If it resurfaces, replace and register the battery.
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Just saw this post. Yes, I cleared it and I think it was 3 start/stop cycles later it was back. Car was also sluggish to turn over; I didn't check the voltage as it was obvious what was wrong. Battery changed, registered, and all is fine now. The M3 doesn't get driven much and so stays on a CTEK smart charger/tender a lot, and the CTEK thought everything was fine (battery would take a full charge and test ok) -- apparently it is not as smart as it thinks it is.