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Old 07-10-2013, 03:07 AM
HTK12 HTK12 is offline
Officially Welcomed to the 'Fest
Location: Finland
Join Date: Aug 2012
Posts: 1,228
Mein Auto: E39 540i
Originally Posted by Reeds 540 View Post
I researched several other posts about this warning, and they seemed to indicate alternator and battery as potential problems. I don' completely understand how this could be if Battery is holding a charge just fine and staying recharged wit normal use. If there is a fusible link or other related issue to check let me know.
I had trans failsafe due to failing battery. The battery did start the car just fine.. Battery resting voltage was ~12V, when it should be 12.4V+. Replaced the battery and haven't had issue since. These cars are really sensitive to electrical issues, so first check the alternator & battery.

What kind of scanner did you use? Which diagnostic port?
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