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Go Back   BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E46, E90)
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3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.


       
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Old 06-06-2006, 07:50 AM   #1 (permalink)
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How to replace Final Stage Resistor

Hi Guys,

Can any body tell me or direct me to the step-by-step instructions on how to replace the final stage resistor. I have got 2000 BMW 325i SE.

Thanks in advance,

KhanJee
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Old 06-06-2006, 06:57 PM   #2 (permalink)
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Remove the plastic cover behind the glove box (passenger side) look toward the drivers side close to the bulkhead and it will be there, disconnect the plug, release the clip and pull back gentally (don't break the clips!) it's pretty easy.
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Old 06-14-2006, 01:52 PM   #3 (permalink)
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Any pics to go with that or a website that shows how? Greatly appreciated....my blower is driving me nuts and I need to get the thing sorted out....I am guessing from most posts its the final stage resistor since the only problem I am having is that the climate control has a mind of its own. Rest everything works hunky dory when that is it comes on. The A/C cools, the heater works...etc etc.

Oh and Khanjee where did you buy the final stage resistor from....? Any info will be appreciated.:
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Old 07-01-2007, 02:34 AM   #4 (permalink)
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E46 Final Stage Unit

I experienced the same symptoms (blower running at one speed) on my 2001 325i. Searching the web I found an off-beat article about Resetting the FSU:

http://www.refrigerants.dupont.com/S...acs_200506.pdf

See page 5: The Final Stage. I know - hard to believe finding BMW advice from a dupont website, but I tried this (pull Fuse 50 and replace) and it worked! . Apparently the FSU is an electronic speed controller and is powered even when the key is Off; so you need to pull the fuse to reset. A lot less time and $.

As the FSU design is probably similar on other models one might try pulling/replacing the appropriate blower fuse on non-E46s: refer to the fuse list by the fuse panel.

Best of luck,

Mike
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