OMG - My 2001 X5 experienced sudden battery drain... recharged battery and alternator passed voltmeter check. Went looking online and found this forum! This is my problem - THANK YOU! Have verified that a/c fan is "huffing"... and have started process of removing the FSU... bolster on my X5 may be different than that pictured at http://www.540i6.com/finalstagereplacement.html
and fear breaking any clips. Perhaps another forum will illustrate how this piece looks behind the carpet?