BimmerFest BMW Forum banner
Cancel

Final Stage Unit / Final Stage Resistor

12003 Views 3 Replies 4 Participants Last post by  oz striker, 
C
What does the Final Stage Unit or Final Stage Resistor Do? Is there only one function?

I found conflicting evidences here regarding the true function of the FSR. One thread states that it is only linked to the Blower and regulates the blower speed. Surely it has to have more function than that. For those who have good knowledge on this pls shed light. I also noticed that people who have defective FSR have different symptoms, how is that? Im a newbie to this forum. Thanks in Advance.
Reply
Save
Like
1 - 4 of 4 Posts
B
help?

http://www.xoutpost.com/articles/x5/electronics-x5/9471-final-stage-resistor-replacement-bmw-x5.html

Try reading this post.
Reply
Save
Like
5
That's what I noticed different symptoms same answer, so I changed mine, someone was quick to give a solution without really hearing the problem. :mad:
Reply
Save
Like
O
You fellas may find this useful:

http://www.motormec.co.uk/aircon.pdf

So essentially it provides a constant resistance to regulate the fan speed, and i guess as its failing the resistance it provides varies (hence fluctuating fan speed), but gradually drops with time.
Reply
Save
Like
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
BimmerFest BMW Forum
A forum community dedicated to BMW owners and enthusiasts. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Bringing the BMW community together.
Full Forum Listing
Explore Our Forums
E90/E91/E92/E93 (2006 - 2013) E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999) E60 / E61 (2004 - 2010)
Top