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Old 02-07-2013, 04:49 AM
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Fudman Fudman is offline
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Location: Sudbury, MA
Join Date: Apr 2007
Posts: 6,823
Mein Auto: '02 530i Sport auto
Originally Posted by vatoman View Post
I too am having the same issue. Not my fsu, just replaced.
Before you eliminate the FSU as the cause of this problem, did you buy your FSU from the dealer? There have been several postings of premature FSU failure when they are bought from non-dealer sources (like eBay). I am saying this because the symptoms (battery draining) are typically associated with the FSU and not other components within the heater blower circuit (switches, fan, etc.).
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