whining noise when a/c on
09-10-2012, 11:24 AM
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My Ride: E60
Model Year: 2006
Hi I have 2006 530i and i get this whining noise when a/c is turned on. It gets louder as the gas pedal is stepped. Its seems like noise is more noticeable inside than outside the car. Pls help
09-10-2012, 04:41 PM
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My Ride: 2009 550i M Sport - All options except HUD
I have an 07 550. When my AC is on, I dont hear a whining sound but when I'm alone in the car I can hear a sound from the AC that almost sounds like a piece of plastic is caught in the blowing vent. Its very subtle, hardly noticeable, if at all to passengers but drives me nuts.
It actually stopped a couple weeks ago but I recall hearing it for about a month, then nothing...
It actually stopped a couple weeks ago but I recall hearing it for about a month, then nothing...
09-11-2012, 07:54 AM
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My Ride: 2008 535i:
(8/07 Build) Metallic Bronze, Beige NASCA Leather, Ventilated Seats, Sport Pkg, Cold Wxr Pkg, Logic-7 Sound, HUD, Night Vision, PDC, Split Rear Seats, NAV, Premium Pkg, Comfort Access, HD Radio, Sport Auto Trans
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Sounds like your A/C compressor since when the A/C is turned off the clutch disengages. The bearings are probably wearing out and will eventually fail (requiring either a compressor rebuild or replacement)
09-11-2012, 12:51 PM
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My Ride: 2014 535 Alpine White
I have an 07 550. When my AC is on, I dont hear a whining sound but when I'm alone in the car I can hear a sound from the AC that almost sounds like a piece of plastic is caught in the blowing vent. Its very subtle, hardly noticeable, if at all to passengers but drives me nuts.
It actually stopped a couple weeks ago but I recall hearing it for about a month, then nothing...
It actually stopped a couple weeks ago but I recall hearing it for about a month, then nothing...
I have gotten the same noise in my 08 550i but only a few times.
09-11-2012, 01:58 PM
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OP - start with belt. refrigerant levels etc
09-17-2012, 06:50 PM
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My Ride: 05 BMW 530I
I agree with AchtungE60. Check the refrigerant level. It was most likely the problem. I had a friend with the same issue and I checked the levels and what do you now it was filled too much. I took some out and the issue was fixed.
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