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Old 10-25-2012, 09:52 AM
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Fudman Fudman is online now
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Location: Sudbury, MA
 
Join Date: Apr 2007
Posts: 6,156
Mein Auto: '02 530i Sport auto
I would agree that this sounds like electrical or sensor related. Not getting the default mode indicates it may not be tranny related. Having your problem vanish also indicates it is a spurious problem, which is typically electrical. Your code reader is not seeing any codes because the tranny codes can only be read or reset by a GT-1 or equivalent reader. Find an indy or worse case, go to the dealer to have your tranny codes read. When I tripped a TPF, I got the default mode (3d gear) and the dealer said I needed a new tranny. I told them they needed a new customer, had them reset it and it never recurred.
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