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5 Series DIY
Knowledge Is Power! ~ The place for do-it-yourself threads on a variety of topics. Start a thread describing a particular job (oil change, cooling system overhaul, brakes, shocks and springs, etc.) or search for one you need help with!

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  #201  
Old 10-09-2008, 10:25 AM
vetsbmw vetsbmw is offline
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Location: maryland
 
Join Date: Oct 2008
Posts: 5
Mein Auto: 02 530i
I truly believe this is my problem and I want to do it myself - do you think me - a chic - can do on her own?
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  #202  
Old 10-11-2008, 01:18 PM
tucsonarizona1 tucsonarizona1 is offline
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Location: tucson
 
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Posts: 3
Mein Auto: 2002 325i
That was a lot more work than I expected. It took me an hour to locate it. It is near the center of the vehicle, at the front of the center console, above where the passengers' left leg rests. (American configuration) Above and behind the passenger-side floor vent. After I Pulled the glovebox I found my '02 325i final stage resister was also hidden behind the blowers' electro-mechanical plunger. This had to be gently removed first. It was also held in place by two #20 torx screws. You have to be VERY careful not to damage the plunger linkage after you remove the screws and gently move it slightly out of the way to access the final stage resister. The screws are very difficult to see and remove, and even more difficult to replace. I must say that with my 325i model the job was substantially more difficult and would not recommend going into this job lightly! You need a small, powerful flashlight and a LOT of patience.
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  #203  
Old 10-11-2008, 04:08 PM
thewindy20 thewindy20 is offline
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Location: Wales
 
Join Date: Oct 2008
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Mein Auto: 2002 530d sport
Spot on. Howeverr not so easy here in the uk because on a right hand drive its not the passenger side but drivers side and the pedals get in the way. However if it wasn't for wht i read hear i wouldn't have found the fault, never mind the locationof the fsu. Many many thanks refited a new fsuand so far so good. Part (part no 210110040 heater resistor -E39) coast me 41.71 from euro car parts.
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  #204  
Old 10-17-2008, 12:31 AM
swordfish0416 swordfish0416 is offline
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Location: lexington, kentucky
 
Join Date: Sep 2007
Posts: 101
Mein Auto: 40503
godly this was a great help. recently i just felt my ac wasn't blowing as strong as it suppose to be. and some times it won't even blow any damn air.
then i read this. had to give it a shot. ordered the unit off ebay for 50$+10$shipping.
and put it on today. and god the air con now blow strong!
that was a easy done diy. the only tricky part was theres a tub holding FSU from sliding out. i didn't realize that. so took a while to get it out.
but the whole process was about 10 mins

thank u thank u
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  #205  
Old 10-19-2008, 10:06 AM
bobm48 bobm48 is offline
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Location: OC Ca
 
Join Date: Oct 2008
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Mein Auto: 2002 330
I have a 2002 330, I can not find the upper torq on the black duct piece in front of the FSU. I've reviewed both pictures on this forum, but still unable to find the upper torq.
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  #206  
Old 10-19-2008, 01:39 PM
bobm48 bobm48 is offline
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Location: OC Ca
 
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Mein Auto: 2002 330
Found the Torq, all done, eveything works
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  #207  
Old 10-20-2008, 01:22 PM
pj510 pj510 is offline
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Location: California
 
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Mein Auto: California
This was a great help article. I had a similar issue no air blowing. It was my first time working on a BMW it took me about 30-45mins to replace. thanks again it was very helpful.
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  #208  
Old 10-22-2008, 09:12 AM
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Papahawk Papahawk is offline
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Location: Charlotte, NC
 
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Mein Auto: truck
Great write up and saved me a trip to the stealer! I replaced the FSU this morning and my fan is workin like champ once again! I echo the comments of some of the others using a pair of needle nose pliers to get the plug off was a winner. Once I got that off the FSU came off pretty easy as well, had to work it around the duct work under there but other then that...it was a snap!! Thanks again to my fellow Bimmerfest brother for postin this DIY!!!
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  #209  
Old 10-25-2008, 03:39 PM
bevrich bevrich is offline
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Location: kansas city ks
 
Join Date: Mar 2008
Posts: 2
Mein Auto: 1999 bmw 528I
passanger side floor is full of water.

we have a 1999, bmw. and the passanger side keeps get water all over the floor. is there someone who can tell me what the problem is. thank you
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  #210  
Old 11-01-2008, 02:24 AM
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devroots devroots is offline
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Location: NY
 
Join Date: Jul 2007
Posts: 337
Mein Auto: 98 528i
I am back with more hvac nightmares. My fan does not blow, period. I was able to get another fsu under warranty from the place I bought it from last yr. I put the new fsr in and nothing. I put my climate control panel in another 528 and it controlled the fan, no problem. I know that the unit works at least. So what's next?
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  #211  
Old 11-12-2008, 11:55 AM
STM873 STM873 is offline
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Location: Florida
 
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Mein Auto: 2001 BMW 325
Once you get the Blower Motot Resistor out is there anyway to check it to see if it is bad other than spending the $90 for a new one only to find out that that wasn;t the problem?

TX

S
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  #212  
Old 11-12-2008, 06:58 PM
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bluebee bluebee is offline
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Location: San Jose, California
 
Join Date: Mar 2008
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Mein Auto: 02 BMW 525i M54 automatic
How to electrically test the FSU and wiring harness operation

Quote:
Originally Posted by STM873 View Post
Once you get the Blower Motot Resistor out is there anyway to check it to see if it is bad
See post #150 of this thread.
The best test bench we have so far is as follows ...

Check the wiring harness terminals:
1,5) blower
2) +12
3) control input (in spite of being drawn as the collector of a bipolar transistor!)
4) ground

So I would:
A) spray WD40 on the contacts
B) check terminal 2 for voltage
C) put a two channel scope on terminals 3 and 1, and then 3 and 5


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  #213  
Old 11-14-2008, 09:05 AM
lablancjc lablancjc is offline
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Location: Sacramento, Ca
 
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Posts: 85
Mein Auto: '97 528i
Thanks for the awesome write up that was easier then expected.
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  #214  
Old 11-14-2008, 02:00 PM
BLINES BLINES is offline
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Location: Dallas
 
Join Date: Nov 2008
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Mein Auto: 01 530 & 05 GS300
Another replacement, easy and quick, tough for a 6'4" to get into that space, but worth it.
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  #215  
Old 11-14-2008, 11:04 PM
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bluebee bluebee is offline
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Location: San Jose, California
 
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Mein Auto: 02 BMW 525i M54 automatic
I don't see the diagram and part numbers so here it is for the FSU on a 2002 E39

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  #216  
Old 11-15-2008, 10:46 AM
dmarquis dmarquis is offline
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Location: Lake Forest, CA
 
Join Date: Nov 2008
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Mein Auto: 2000 528i
Thanks for the post - saved $200.

Thanks for the post Elvis. I thought I could trust my BMW mechanic and almost had him do this service for me for $260. He claimed $120 for the part and $140 for labor. The part cost me $60 and with your help I changed the part in 10 minutes.
Thanks again - now I just need to change my mechanic...
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  #217  
Old 11-15-2008, 01:34 PM
Mauricio73 Mauricio73 is offline
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Location: Los Angeles
 
Join Date: Nov 2008
Posts: 1
Mein Auto: 2003 530i
First timer

Thanks for the write up, i just finished doing this and it was as easy as described in the DIY. This is a great resource for BMW owners whom want to do their own repairs. I even switched out the blades on my wipers. I know it's not a big deal but after seeing that replacement parts cost up to $75 it was well worth 2 hours of a Saturday.

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  #218  
Old 12-01-2008, 06:47 AM
JJT JJT is offline
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Location: London
 
Join Date: Oct 2008
Posts: 10
Mein Auto: 523i
Wallet Saver

Elvis,

Thanks for this post - just ordered replacement FSU (41) and will do it myself - saw your posting just in time (cancelled garage booking this morning)!!!!!! No doubt have saved loads of money!

Seems like a really common problem - great post
.

Last edited by JJT; 12-01-2008 at 07:05 AM. Reason: spelling!
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  #219  
Old 12-02-2008, 11:50 AM
JJT JJT is offline
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Location: London
 
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Mein Auto: 523i
Bit fidly on a right hand drive, but still only took 30 mins!!!!!! Well pleased.
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  #220  
Old 12-04-2008, 08:00 PM
ivannachoo ivannachoo is offline
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Location: North OC
 
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Mein Auto: 1989 VW GTI 16V
Excellent DIY. Wife's fan fixed!
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  #221  
Old 12-10-2008, 06:01 PM
muward muward is offline
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Location: Manhattan Beach, CA
 
Join Date: Dec 2008
Posts: 2
Mein Auto: 528i
Fantastic!

This is the easiest big fix I've ever done by myself. Every step was so clear cut I thought there had to be a pitfall awaiting me. None! Took me about fifteen minutes. Only hard part was disconnecting electrical wire clip from FSU, but wiggling and pulling worked. I don't even want to know what this would've cost me with my BMW repair guy.
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  #222  
Old 12-14-2008, 04:17 PM
gofishkie gofishkie is offline
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Location: frisco, tx, usa
 
Join Date: Dec 2008
Posts: 1
Mein Auto: bmw 528i
Any Tips?

Any tips on replacing the FSU? I'm having trouble with the tab. It's hard to push down the tab and pull out the unit at the same time.

Thanks.
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  #223  
Old 12-16-2008, 10:45 AM
muward muward is offline
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Location: Manhattan Beach, CA
 
Join Date: Dec 2008
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Mein Auto: 528i
Had same problem.

Had same problem holding down tab with one hand and pulling out the FSU with the other. Not enough room for both hands! The answer for me was to do it with one hand by using pinky to hold down tab and thumb and forefinger to slowly wiggle and pull FSU out. It is slow and almost seems like you're not going to get it, but keep wiggling and pulling FSU while keeping tab depressed and it will come out.
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  #224  
Old 12-20-2008, 12:25 PM
itfrancel itfrancel is offline
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Location: West Palm Beach
 
Join Date: Aug 2008
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Mein Auto: 530i
Replaced my FSU this morning

Excellent post, took me about 30 minutes and I am not very mechanically inclined.
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  #225  
Old 12-23-2008, 08:25 AM
tomtheguvnor tomtheguvnor is offline
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Location: London
 
Join Date: Dec 2008
Posts: 1
Mein Auto: BMW 528i 1997 (E39)
Thanks a bunch!

I've been having intermittent battery drains and thanks to your guide I managed to replace the FSU so thanks. Fingers crossed I won't find myself stranded again :-)
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