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Q: ac fan works only on the forth degree..why on 1992 BMW 325i

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hi dear every body. my 525i bmw 1992 model ac fan does not work with the first three levels, only the forth. i was informed to change the fan resistance. how much is it and how does it look like. also, how to replace it. thanks a lot
(2) Answers
This sounds like a blower resistor to me as well. The 4th, highest setting bypasses the control resistor and that is why it works. I found a web page that explains how to replace it if you're up to it. hope this helps
http://www.bmwe34.net/E34main/Maintenance/Electrical/Sword.htm