FSU (aka Blower Motor Resistor) replacement pictorial guide by Starless

By diyauto
( 2 )

3 minute read

FSU (aka Blower Motor Resistor) replacement pictorial guide 

Compliments of Starless @ bimmerfest.com


It was my turn to replace the FSU (blower motor resistor). I just got tired of the pulsating pattern of the blower and its shutting off on its own accord. It is especially frustrating in the 100F degrees St. Louis weather. I ordered the part through one of my favorite sites: www.eeuroparts.com that has great prices and both OE and aftermarket parts. The FSU is made by Behr (OEM). The cost was $59.99 shipped. It took an hour to install and it was a pain in the neck (literally) due to its location under the dash. If you have problems with your back/neck/shoulders I’d recommend to delegate this repair to a shop technician (hopefully without these problems). You have to spend some time in the area below the glove box on your back and side with your legs on the passenger seat. There is simply no other way. 

The DIY is in the pictures. Sorry if I missed something. But that’s just pretty much the way I did it. I’ll just mention it here one more time that I did not find it necessary to remove the air duct and control motor to get to the resistor like some other diys suggest. Of course it will make things a little easier but will take more time. And I did not want to spend more time on the 95F degrees evening sweating in the footwell of the car. So here is the pictorial guide: