BimmerFest BMW Forum banner
1 - 20 of 174 Posts

·
Seek to understand,^Value
Joined
·
25,199 Posts
Discussion Starter · #1 ·
PICTURES EXPECTED!
[The intent is to refer others to this thread when they ask what FSR to buy!]

There is no proof ... but anecdotal evidence abounds of people purchasing supposedly "OEM" Final Stage Units (aka Final Stage Resistors) on Ebay and elsewhere that were either dead on arrival or didn't last more than a year.
- failed blower resistor (final stage resistor) not really dead

Apparently there are many brands out there:
Recommended: (I think)
- Sitronic/Bosch

Not recommended: (I think)
- GKR
- Behr
- Valeo,
- Siemens

Certainly not recommended: (I think)
- Meyle
- Hella
- Uro
- Denso
- Power Pro

As for recommended (and not recommended) brands, the threads are all over the place ... so ... this new thread is merely an attempt to consolidate people's FSR experiences with the right and wrong FSUs to purchase.
- FAN CONTROL GOES HAYWIRE: poorly ventilated final stage resistor/final stage unit (FSR/FSU) modules that are practically sure to go haywire due to poor heat-sink design (1) (2) (3) (4) (5) (6) (7) (8) ... Autopsy (1) (2) often causing the battery to drain overnight (1) (2) (3) & how to isolate and replace the blower motor (1) (2) (3)

PLEASE post a picture of your FSU if you're going to post to this thread as a big part of the story is the branding of the FSU!

Bearing in mind most FSRs have three or four brandings, and that the GKR FSR (of whatever branding) is known to be lousy ... I ask for the record ...

What is the right brand of FSU to buy for the E39?

 

·
Registered
Joined
·
15,837 Posts
From my experience, the FSU must have 33 spines on the heat sink, and be potted with silicone, rather than epoxy.

I don't think that one should reject any German manufacturer out of hand.
 

·
Registered
Joined
·
2,561 Posts
I think your info is a bit off here as well. I have personally sold tens of dozens of Behr brand FSUs with a warranty over the years and to my knowledge never have had to help anyone process a warranty claim. Can't think of a single one. The parts are affordable and everyone I have been selling them to has had good luck replacing the faulty factory unit with the Behr part.
http://www.eaceuroparts.com/parts/part_number/64%2011%206%20923%20204

I find it interesting you list Hella at the "do not touch" level as well. Hella and Behr are partners, look into Hella service parts. Hella electronics are some of the finest in the world, as evidenced by the xenon ballasts in our e39s which are a decade old and still working strong for most of us.
 

·
Seek to understand,^Value
Joined
·
25,199 Posts
Discussion Starter · #4 ·
sold tens of dozens of Behr brand FSUs ... Hella and Behr are partners
Hi Mark (and anyone else with info),

All the information in the OP comes from the referenced thread.

One huuuuge problem is the rebranding that goes on with the FSU is horridly confusing, at best.

Who actually MAKES the Behr/Hella-branded FSUs anyway?
 

·
Seek to understand,^Value
Joined
·
25,199 Posts
Discussion Starter · #5 ·

·
Seek to understand,^Value
Joined
·
25,199 Posts
Discussion Starter · #8 ·
For the record, yet another FSR/FSU failed in less than a year based on this thread:
- E39 (1997 - 2003) > FSU vs FSR difference and symptoms?

I asked that OP to post a picture over here of the label of the failed FSU/FSR so that we can continue to tally anecdotal evidence of which FSR/FSU's are reliable and which are not.
 

·
Officially Bimmerfested
Joined
·
219 Posts
Here are pictures of my 10 month old FSU that went bad. It looks just like the one in your initial thread, except that mine was made 03/2010 (at least I think from the 03 10). And this is sold as an OEM part !!!

I'm with you in nailing down this culprit!
 

Attachments

·
Registered
Joined
·
6,925 Posts
I think the term "anecdotal" appropriately characterizes this situation. I, too, have read several threads where folks have had replacement FSUs fail within a year. The problem is that most posters do not identify the make of the FSU nor where they bought it. The ones that do typically state that they got theirs on eBay or another questionable source. Unless we can get some accurate feedback from folks that have replaced their FSUs (both ones that continue to work and ones that have failed), it may be difficult to develop any solid recommentations based on facts rather than a few isolated posts. Based on my personal experience and what I have read, my recommendation has been to bite the bullet and get your FSU from a stealer (Sorry, Mark). This is based not on evidence but rather the lack of hard evidence of what is good and the greater probability for reduced risk (which may sound weird since the original OEM FSU was a bad design). :dunno:
 

·
Officially Bimmerfested
Joined
·
219 Posts
I got my FSU from EAC Tuning a.k.a. EAC Europarts. Still waiting for their response on the warranty.

Update: Talked to Mark who promised to expedite my request. Keeping my fingers crossed...
 

·
Seek to understand,^Value
Joined
·
25,199 Posts
Discussion Starter · #12 ·
"anecdotal" appropriately characterizes this situation...The problem is that most posters do not identify the make of the FSU nor where they bought i... Unless we can get some accurate feedback
I agree that we need more accurate feedback!

I'm not sure our options, but, one tack (which I'm taking and I ask for help from the tribal community) is to enlist the help of each of the folks in the future who write about a failed FSU (as we just did with BeemVerg).

Given that the FSU is often multiply branded, what we need at the very least is a photo of the label & where they bought it. We may never answer the 'most reliable' question; but, over time, using incrementalistic technique, if we stick with the program, we should at least be able to answer the 'least reliable FSU" question.

Please help everyone ... and I thank BeemVerg for pitching in on the tribal project!
 

·
Officially Bimmerfested
Joined
·
219 Posts
Did some search and found out that Sitronic is a German company, while Valeo is French. They both make electronic car parts. Sitronic specializes in the cars' electronics and sensors, including climate control systems. In fact, the FSU is featured in one of their pictures. They may be suppliers of OEM parts to BMW since they look like big, global, well-established companies. I can't find anything on GKR. I noticed on your first 2 pictures that the Valeo numbers do not match, nor the BMW numbers on the FSU's - GKR vs Sitronic. My numbers all match with MatWiz's FSU, except for the 03 10, which may be date of manufacture.

Update: Behr is also German and may also be making OEM parts for the car companies...from Stuttgart mind you!

My only consolation is this forum telling me that I'm not alone :(
 

·
Officially Bimmerfested
Joined
·
219 Posts
Oops, further research makes me think that Sitronic may be subcontracting for both Behr, Bosch, and makes parts for quite a few car companies, EXCEPT BMW, but including Valeo !

http://www.sitronic.com/index.php?id=107&L=1

:dunno:

Now these guys think that this part works better than the one for an E46:
http://www.e46fanatics.com/forum/showthread.php?t=390683

Looks like we all have the same problem !!! Same one for E39 and E46 (that's why FCP Groton listed it as such), but different part numbers!

Meanwhile, after [email protected] told me that warranty is for 12 months, their sales dept. is now telling me it's past warranty!
 

·
Officially Bimmerfested
Joined
·
219 Posts
PICTURES EXPECTED!
[The intent is to refer others to this thread when they ask what FSR to buy!]

There is no proof ... but anecdotal evidence abounds of people purchasing supposedly "OEM" Final Stage Units (aka Final Stage Resistors) on Ebay and elsewhere that were either dead on arrival or didn't last more than a year.
- failed blower resistor (final stage resistor) not really dead

Apparently there are many brands out there:
Recommended: (I think)
- Sitronic/Bosch

Not recommended: (I think)
- GKR
- Behr
- Valeo,
- Siemens

Certainly not recommended: (I think)
- Meyle
- Hella
- Uro
- Denso
- Power Pro

As for recommended (and not recommended) brands, the threads are all over the place ... so ... this new thread is merely an attempt to consolidate people's FSR experiences with the right and wrong FSUs to purchase.
- FAN CONTROL GOES HAYWIRE: poorly ventilated final stage resistor/final stage unit (FSR/FSU) modules that are practically sure to go haywire due to poor heat-sink design (1) (2) (3) (4) (5) (6) (7) (8) ... Autopsy (1) (2) often causing the battery to drain overnight (1) (2) (3) & how to isolate and replace the blower motor (1) (2) (3)

PLEASE post a picture of your FSU if you're going to post to this thread as a big part of the story is the branding of the FSU!

Bearing in mind most FSRs have three or four brandings, and that the GKR FSR (of whatever branding) is known to be lousy ... I ask for the record ...

What is the right brand of FSU to buy for the E39?
How about ACM (?) ? I see this a lot being sold as OEM.

This is a Sitronic branded one, like I had, but ad says it is by Valeo. I called a dealer and they sell Valeo, which could be this OEM/Sitronic/Valeo part.
http://www.eeuroparts.com/Main/PartDetail.aspx?id=64116923204G

Also, it looks like Behr/Hella FSU's are now Made in China.
 

·
Registered
Joined
·
15 Posts
I just had a Sitronic blow out on my 2001 525iA. I got a replacement Behr unit from AutohausAZ and it worked fine.
 

Attachments

·
Seek to understand,^Value
Joined
·
25,199 Posts
Discussion Starter · #17 ·
I just had a Sitronic blow out on my 2001 525iA. I got a replacement Behr unit from AutohausAZ and it worked fine.
Thanks for posting that picture of the bad FSU for our anecdotal information.

The bad FSU appears to be a Sitronic/Valeo/BMW made in Germany FSU.

Was the new Behr similarly tri-branded?
 

Attachments

·
BMW CCA 415154
Joined
·
51 Posts
My 13 month old FSU died on Sunday, couldn't have happened at a worse time. The last few days have been the hottest so far this summer here. Attached is a photo of it. I bought it from Pelican and it's warrantied for 12 months. I called them yesterday and they offered to take it back and give me a store credit ~ $63. That's fine with me, as I'm sure I'll need to buy other parts down the road. Went to the dealer yesterday and bought the OEM FSU for $106 incl tax. It looks just like the photo in the first posting in this thread. Hopefully this one will last longer!!
 

Attachments

·
Bimmerholic
Joined
·
1,788 Posts
I just got mine from Autohaus. Mine says "Behr" and "Hella", but also "Made in China", not Germany. :dunno: Maybe they are outsourcing.

We'll see if it works tomorrow.
 
1 - 20 of 174 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.
Top