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Old 03-26-2008, 07:29 PM
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bluebee bluebee is offline
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Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
Is there a diagnostic procedure for determining why the interior fan stops working?

Right after my very first bimmerfest brake job, the interior fan stopped working altogether. I was told in that brake DIY to check over here regarding the cause (

After reading this post, I see the fan motor problem could be the porcupine FSU or it could be the fuses apparently hidden deeply behind the glovebox.

I'll definitely check the glovebox fuses; but, before I go out and get a FSU, may I ask if there is a diagnostic procedure for determining why a fan suddenly stops working?

Or, is replacing the fuses and FSU the only diagnostic that is available?
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