Question about BMW 3 Series

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BMW 320d e90 fan noise from AC/climate control unit. Very annoying. It comes and goes. Please note the AC/climate control still works and the noise seems to be the only problem. It only started a couple of weeks ago when the temperature was very low here, below 0 degrees C. I also had the light come on to add coolant. Can any1 help?

Posted by bigfatfay on

  • cspassik Nov 09, 2017

    I have the same problem on an X3. It sounds like crickets chirping. It has been there for years, and when the car was under warranty BMW said they don't fix working things for just noise. I believe it is the bearings on the fan- there are youtube videos on how to change it but it looks like a major pain to do so. The good news is it will probably continue to chirp so turn up the music or pretend the chirping means summer has arrived

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Jesse Waldron

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  • 41 Answers

Check if happening at specific settings on the fan. Fans use resisters to slow down their speed. Typically the lowest setting will mess up before the highest. If coming a going means you change the speed and it goes away.

If it doesn't matter what speed, there is probably something in your vents. Do you park outside? Mice love getting into warm cars on cold nights, and build nests... a nice comfy place can be in vents...

Or have very small kids... mine used to love putting things in the vents and have them disappear! Could be cherios

Posted on Nov 08, 2017

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5 Related Answers

Anonymous

SOURCE: BMW E46 320d Fy81457

replace fuel presure regulator

Posted on Aug 28, 2008

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Anonymous

  • 6 Answers

SOURCE: 2006 bmw e90 electrical problem

look at the battery connection in the boot it tends to get seperated after a accident , you need to the replace the battery plus connection , yo get this from the main dealer for around 100 euro ??

Posted on Feb 04, 2009

greg benton

  • 231 Answers

SOURCE: BMW E90 323I, ABS resetting.

hey hassa, if you swapped an ABS control unit from another vehicle, it needs to be coded to your vehicle. If your vehicle does not recognize the replacement vin, it will set a fault. also, make sure to have the ABS sensors calibrated after the control unit is coded. most dealers charge about 1hr labor to perform coding and sensor calibration.

Posted on Apr 05, 2009

Anonymous

  • 1 Answer

SOURCE: Climate control is stuck at 18 degree celcius, fuses are all fine

I had that, got a new unit from incurance company scrapyard for $80, changin it was $20 and when opening the old one (the knob is a potentiometer) there was just excess oil between contact surfaces... Local M dealer gave me an estimate of $1500+job

Posted on Apr 21, 2009

budlight2k

  • 20 Answers

SOURCE: Climate control air conditioner stops working due to incorrect ambient air temperature

Same car, same problem. Press MODE, FRONT and REAR buttons together to reset tempreture. You probably need to replace the sensor GM part number 15047946 it is in the front grill email me for a picture. [email protected]

Posted on Jun 28, 2009

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