AC/Heat fan not working on e90?

bfaone · 06-25-2018, 07:24 AM

Bumped *******

I know it's an old thread, but useful to me.
My fan suddenly died .
I have checked my Blower fan works on its own when supplied externally with 12V through an external Car Battery.
My RESISTOR also works as I took out and swapped with my wife's car. It works .
Also swapped my Climate control unit IHKA with my other car. WORKS...
All the rest of the buttons on Climate control work. The fan speed display is fine....
The 12V + supply is going to the RESISTOR module. Both positive and Negative....
Could some one please HELP.......

bfaone · 06-25-2018, 07:25 AM

My Battery supply to the Fan with the Car not running is 12.20Volts...

Wodge · 07-08-2018, 02:12 PM

I have just purchased and have a similar issue. Gonna check the fuses now. One thing I noticed whilst fitting my stereo is that my climate control panel has 3 plug positions but only 2 plugged in. Have been unable to locate a stray plug? My control panel is p/n 64119129937 and the smaller, thinner plug not present

Wodge · 07-08-2018, 02:44 PM

Also no lights on the unit

avityvan · 01-02-2019, 03:17 PM

Quote:

Originally Posted by djsolution

Here's a link to the DIY for the blower motor/resistor replacement. I used the part # listed in the thread and ordered from tischer bmw.

http://www.e90post.com/forums/showthread.php?t=464807

I have the same issue with my 06 325i. I checked my fuse and function display is okay, I replaced blower motor and resistor but still not ac/heat blowing.

Need help, much appropriate.

avityvan · 01-02-2019, 09:26 PM

I've checked all fuses ok, replaced blower motor and resistor but still not ac/heat fan still not blowing.

Please help, much appreciate.

dizzy_7 · 01-16-2019, 06:30 AM

There is a recall for this, check bmw in your country

Doctorbubba010 · 04-14-2019, 06:03 PM

same!!! I am going to check fuses tomorrow

jonnybthegoalie · 02-17-2021, 12:17 AM

This just started to happen in my '11 E90... The blower motor will just randomly kill itself when set to where I normally have it (main and lower vents), but will come back when I set the air to come out the windshield defrost. I can get it to go back to normal if I shut the car off and turn it back on... any ideas??? I know the blower motors are known to go bad, but it works most of the time, it's almost at random when it does this.

Damian03 · 06-25-2022, 09:10 PM

Well I just wanted to share what I found through bench testing and trying to avoid replacing bunch of parts and wasting money. The blower fuse was good had 12v at the resistor connector but nothing coming out of it to the motor. Decided to bypass the resistor straight to the motor , it would not run. Was confused, put the multimeter to it and it showed 12v but then any kind of load was applied to the wires like a test light the voltage went to 0. I knew I was onto something. Turn out it was bad ground. I’ve yet to solve the problem, does anybody know there does ground to the blower come from? I know positive is on all the time and the blower is actually activated through ground. Any bmw gurus here that can help ?

06-25-2018, 07:24 AM	#45
bfaone Enlisted Member 7 Rep 43 Posts Drives: 320d SE Auto Join Date: Jul 2017 Location: Londonderry iTrader: (0)	Bumped ******* I know it's an old thread, but useful to me. My fan suddenly died . I have checked my Blower fan works on its own when supplied externally with 12V through an external Car Battery. My RESISTOR also works as I took out and swapped with my wife's car. It works . Also swapped my Climate control unit IHKA with my other car. WORKS... All the rest of the buttons on Climate control work. The fan speed display is fine.... The 12V + supply is going to the RESISTOR module. Both positive and Negative.... Could some one please HELP.......
	Appreciate 0 Quote

06-25-2018, 07:25 AM	#46
bfaone Enlisted Member 7 Rep 43 Posts Drives: 320d SE Auto Join Date: Jul 2017 Location: Londonderry iTrader: (0)	My Battery supply to the Fan with the Car not running is 12.20Volts...
	Appreciate 0 Quote

07-08-2018, 02:12 PM	#47
Wodge Registered 0 Rep 2 Posts Drives: E91 320d Join Date: Jul 2018 Location: Spalding iTrader: (0)	I have just purchased and have a similar issue. Gonna check the fuses now. One thing I noticed whilst fitting my stereo is that my climate control panel has 3 plug positions but only 2 plugged in. Have been unable to locate a stray plug? My control panel is p/n 64119129937 and the smaller, thinner plug not present
	Appreciate 0 Quote

07-08-2018, 02:44 PM	#48
Wodge Registered 0 Rep 2 Posts Drives: E91 320d Join Date: Jul 2018 Location: Spalding iTrader: (0)	Also no lights on the unit
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01-02-2019, 09:26 PM	#50
avityvan New Member 0 Rep 14 Posts Drives: 2006 bmw 325i Join Date: Jan 2019 Location: Minnesota iTrader: (0)	2006 bmw 325i ac/heat blower motor not blowing. I've checked all fuses ok, replaced blower motor and resistor but still not ac/heat fan still not blowing. Please help, much appreciate.
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01-16-2019, 06:30 AM	#51
dizzy_7 Enlisted Member 0 Rep 37 Posts Drives: 335i E93 MY08 Join Date: May 2012 Location: Australia iTrader: (0)	There is a recall for this, check bmw in your country
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04-14-2019, 06:03 PM	#52
Doctorbubba010 Enlisted Member 3 Rep 33 Posts Drives: 2010 335i (N54), 2005 525i Join Date: Feb 2019 Location: North Carolina iTrader: (0) Garage List 2010 E92 335i [0.00] 2010` E92 335i [0.00]	same!!! I am going to check fuses tomorrow
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02-17-2021, 12:17 AM	#53
jonnybthegoalie New Member 2 Rep 14 Posts Drives: 2014 335i xDrive 6MT Join Date: Jan 2021 Location: Michigan iTrader: (0)	This just started to happen in my '11 E90... The blower motor will just randomly kill itself when set to where I normally have it (main and lower vents), but will come back when I set the air to come out the windshield defrost. I can get it to go back to normal if I shut the car off and turn it back on... any ideas??? I know the blower motors are known to go bad, but it works most of the time, it's almost at random when it does this.
	Appreciate 0 Quote

06-25-2022, 09:10 PM	#54
Damian03 Registered 0 Rep 1 Posts Drives: E90 330i Join Date: Jun 2022 Location: Tennessee iTrader: (0)	E90 blower problem Well I just wanted to share what I found through bench testing and trying to avoid replacing bunch of parts and wasting money. The blower fuse was good had 12v at the resistor connector but nothing coming out of it to the motor. Decided to bypass the resistor straight to the motor , it would not run. Was confused, put the multimeter to it and it showed 12v but then any kind of load was applied to the wires like a test light the voltage went to 0. I knew I was onto something. Turn out it was bad ground. I’ve yet to solve the problem, does anybody know there does ground to the blower come from? I know positive is on all the time and the blower is actually activated through ground. Any bmw gurus here that can help ?
	Appreciate 0 Quote