Replacing Final Stage Blower Resistor pack

[djimbuser]

I don't remember. I think it would but if it doesn't then you need to change the other resistor the blower motor resistor here's an image of it,

Bimmerparts sells it for $32 + shipping. I have a spare one for $25 shipped.

Great photo of the resistor. Where is it located / how do I replace it?

Thanks

[AbeM3]

Awesome write up. Came in quite handy this week when my unit died.

Abe

[bmw7410]

Tonight on my way home I had my AC at full blast. Then it just stopped. The AC light was still on as was the recirculation light. But the blower doesnt work at any speed. Which part would this be?

[bmw7410]

Guess it would help if i check my fuses first, blower motor fuse was toasted to a crisp on top.

[DirtyT]

Would this apply to a '93 520i? My fan is intermittent. All the lights on the control panel work fine, but when I turn on the fan, the fan doesn't come on. Sometimes it starts working when I turn the car back on, but the next time I turn the car off it will stay off next time I start the car. When it blows air, it's at the setting I have the knob set at(the pressure doesn't fluctuate), if that helps narrow down the problem part. Thanks.

[///M-Bramage]

I had all these symptoms and more:

Fan worked fine most of the time, then it would suddenly drop back to about half speed

Sometimes the fan would just stop for a while, and then work again

When it was working ok, it would be noisy on HIGH (Like it was vibrating)

One day last week, the fan just stoped. I was sure it was the fan. I read this write up, along with others, and figured I would try this, since it's easier to get to than the fan, and a common problem. It's been hot, and I have had ZERO fan for a week. I was kinda hoping it would just start working again...

I said screw it, and ordered the part:
My Final Stage Unit arrived today - 10 minutes later, I have full fan! It works perfect. Climate contol works great as does the auto setting. I plugged in the unit (capacitor) thinking, "no way"... I was under the dash and reached up, turned the key and !!!!!! yaaa hoooo -

If you have fan issues: <b>Do this first!!!</b> My fan is smoother and I would have wasted $200 plus about 4 hours changing out the fan, only to find the fan still didn't work. Then I would screw with it, trying to test it connected to a battery charger and blow up a perfectly good fan!

If you have a fan problem - DO THIS..


Moral of the story? Do I have to say it?

<b>If you have a fan problem - DO THIS..</b>

Only thing I would add is that the unit is mounted into the housing sideways. You really have to completly remove the down draft to see it. It goes in sideways, but it can be accessed if you follow these instuctions.

THANKS FOR THE GREAT DIY!!!!!

PS - the answer to the last two post before this one is "YES" it is this part, and it is applicable on the 5er (5 uses a different part number - Call your supplier and ask for the "Blower Motor Final Stage Unit"

[krazymad]

GREAT Write Up!!!

My car's climate control would just go to full blast on the fan speed when I turned it out. Temp controls still worked, but fan speed was all messed up. I'm sure a trip to a repair shop would have resulted in a new CC unit costing me well over $400+.

A quick and simple replacement of my final stage blower fixed my problem. Its been working great for months now. THANKS!

[berlinetta]

Nice write-up! I thought the capacitor fix would take care of this, needless to say it did not. My symptoms are identicall, ordering resistor tomorrow!

[sideroxylon]

Yeah, this is a great DIY writeup!! I just did mine this weekend and everything works perfectly now.

One thing I will add is that the duct you have to remove can be a real bitch to get back on. Only because you can't see the opening where it snaps back in very well. Other than that everything went pretty much as stated in the writeup.

Thanks DeeM3!!!

[DeeM3]

Glad i could be of help sideroxylon. It's almost hard to believe how many people actually benefit from a DIY I almost didn't do.

[///M3LandShark]

Glad i could be of help sideroxylon. It's almost hard to believe how many people actually benefit from a DIY I almost didn't do.

Thanks for doing it! I'm having the exact same thing happening and I actually spent an afternoon pulling the fan out only to find that it works perfectly w/ direct power. Now I know what the problem is and I'm going to get a new FSU ASAP. Thanks again!

[T///Mac]

I had the exact same symptoms described on my '98 M3, the AC blower just quit working, all controls/lights seem to be responding the way they should. So I decided to follow this DIY, everything went as instructed, unfortunately, it did not fix the problem, the blower still won't run even with the new FSU. I've checked the fuses that correspond to AC on the lid (I believe there were 4) and they seem to be in proper order. Anyone have any suggestions on what to do/check next?

[DeeM3]

T ///Mac try pulling out your blower unit and check to see if it's still working.

[luvmye36]

thanks f

[luvmye36]

thanks for

[luvmye36]

thanks for the

[luvmye36]

wow, something went haywire when i was trying to reply.. anyhow i just wanted to say thanks for the original post as it fixed the issue I was having and saved me $175 over the quote I got to have it done.

great post...

[qwfx]

thx guys

[qwfx]

I am somewhat confused now, I read most threads and it seems that my the final stage unit is for automatic ac or heater and the motor resistor is for the ones who has the knobs,
i have the same problem ac and heat just work on level 4, so i order the part in picture #2 here in this thread, now picute #1 do i need that part too, the final stage unit?

[krazymad]

Qwfx - I don't quite understand what you're saying. Picture #2 just shows a screw placement, did you mean pic #1, the metal looking object with the "spikes?" Part #64.11.6.929.540.

Cars with digital climate control have the final stage unit. Cars with rotary-knob climate control have the blower motor resistor pack.

If so, you do not need to purchase any additional parts.. Follow the instructions on post #1 to replace the final stage blower resistor pack. If it works, you're done!! If not, you may need to do this:
http://www.macadamizer.com/bmwfix.html

[jsgold]

Thanks for this very helpful post! My son's 96 318i had problems with both the capacitor and the final stage unit. Had no idea where or how to replace this thing as I have never dealt with BMW's. Car works fine now!

[turb0charged]

I don't remember. I think it would but if it doesn't then you need to change the other resistor the blower motor resistor here's an image of it,

Bimmerparts sells it for $32 + shipping. I have a spare one for $25 shipped.

is there a writeup on how to install this? thanks

[kcar73]

Well I have a 94 325i, the blower only works on the highest setting I think it is the blower resistor, is there a write up for this?

[TheMasterRat]

Just a heads up... Don't buy this from the dealer... Local one charged me 150$ (roughly) for one... Bavauto has it for 70....

Yah... and then it didn't even fix my problem... My blower motor had died... the bastid... 380$ later and a lot of blood, sweat and swearing, my A/C works again.

[ChosenGSR]

bump to a never-ending-thread

Does anyone know the difference between the listed "new" and "old" units?