My vents now only blow on high. I am supposing there is a motor speed resistor. I smelled something burning and knew something was about to fail... then only high speed. So, where is this unit, how much does it normally cost and how to replace. Thanks in advance!
Kevin

Well heck... I found what I was looking for! For those of you who might have a similar problem... go Here:http://www.nmia.com/%7Edgnrg/page_4.htm

you can repair the socalled sword, which controls the blower speed.

Here my detailed write up
http://www.bimmerboard.com/forums/posts/136145/