Aircon whiring sound from dash

pault1980 · 10-31-2021, 11:18 PM

Hi All,
New user here (though long time reader). I've got an ongoing low pitched whirring sound coming from within the dash on my F15 M50D when the aircon/interior fan is on. It does tend to vary with engine revs - almost sounds like a power steering pump low on oil but at a lower volume.
Initially I thought turning off the a/c (fan still on) got rid of it but have realized that it only goes away with the fan off.
Before I start pulling apart the dashboard to replace the blower, has anyone had this issue before or any ideas?

CryptoHeff · 03-03-2022, 05:09 AM

Hello mate

I've just got a new to me F85 and have exactly what you describe. Really audible on low fan settings regardless of if a/c is on. Goes away with fan turned off.

Did you have any luck sorting it out?

Have read conflicting views on here about it happening even after replacing the blower motor.

Cheers

E34_BMW_525i · 06-29-2022, 07:50 AM

I have this same whining noise which seems worse at low RPMs. Blower motor replaced under warranty last week and the issue is not resolved.

Also have an audible "clicking" coming from behind the central vents. Fairly consistent with A/C and fans on. Can only hear it with music off. Any thoughts?

Just wondering if anyone has come across other potential fixes...

Furbz · 08-15-2022, 08:53 AM

i have the exact same issue
2017 F15 X5 50i

very irritating!

Hop74 · 08-17-2022, 12:21 AM

Just noticed this noise today. Started after some city driving with the AC in during a really hot day. Had a good heatwave going on so the AC has been on a lot. The noise increases in pitch with the RPMS when the AC is on. Doesnt happen until engine is fully warm and driving for a while with AC on high.

zero2sixtyZ · 08-17-2022, 09:39 AM

Same issue here. From other threads, users reported replacing the blower motor does not fix. Haven't taken a look at the RealOEM part diagrams yet, but are there any other potential moving/spinning parts to investigate?

wmr71 · 08-18-2022, 04:33 PM

hey folks....I posted this awhile back as I am having a noise from my dash too

here is the post:https://f15.bimmerpost.com/forums/sh....php?t=1932942

I took it back into the dealership and they kept it for about a week and came back and and said they believe its the pulley on the AC compressor. it happens with the fan on and off.

I've seen a couple posts on here where a dealership/shop replaced the blower motor and it didn't end up fixing the problem. the dealership said they diagnosed it with a stethoscope type of device....I can get OEM compressor for $652 from FCP Euro and I may change it in the winter time if the noise gets louder.

10-31-2021, 11:18 PM	#1
pault1980 New Member 17 Rep 22 Posts Drives: 2018 G30 530D Join Date: Oct 2021 Location: Western Australia iTrader: (0)	Aircon whiring sound from dash Hi All, New user here (though long time reader). I've got an ongoing low pitched whirring sound coming from within the dash on my F15 M50D when the aircon/interior fan is on. It does tend to vary with engine revs - almost sounds like a power steering pump low on oil but at a lower volume. Initially I thought turning off the a/c (fan still on) got rid of it but have realized that it only goes away with the fan off. Before I start pulling apart the dashboard to replace the blower, has anyone had this issue before or any ideas?
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03-03-2022, 05:09 AM	#2
CryptoHeff Private 3 Rep 57 Posts Drives: BMW X5M Join Date: Mar 2022 Location: Australia iTrader: (0)	Hello mate I've just got a new to me F85 and have exactly what you describe. Really audible on low fan settings regardless of if a/c is on. Goes away with fan turned off. Did you have any luck sorting it out? Have read conflicting views on here about it happening even after replacing the blower motor. Cheers
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06-29-2022, 07:50 AM	#3
E34_BMW_525i Enlisted Member 3 Rep 35 Posts Drives: F15 BMW X5 Join Date: Dec 2021 Location: Pittsburgh, PA iTrader: (0)	I have this same whining noise which seems worse at low RPMs. Blower motor replaced under warranty last week and the issue is not resolved. Also have an audible "clicking" coming from behind the central vents. Fairly consistent with A/C and fans on. Can only hear it with music off. Any thoughts? Just wondering if anyone has come across other potential fixes...
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08-15-2022, 08:53 AM	#4
Furbz Enlisted Member 10 Rep 41 Posts Drives: Possible X5 50i Join Date: Jul 2020 Location: Gauteng iTrader: (0)	i have the exact same issue 2017 F15 X5 50i very irritating!
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08-17-2022, 12:21 AM	#5
Hop74 Private 65 Rep 73 Posts Drives: X5 F15 Join Date: Mar 2022 Location: NY iTrader: (0)	Just noticed this noise today. Started after some city driving with the AC in during a really hot day. Had a good heatwave going on so the AC has been on a lot. The noise increases in pitch with the RPMS when the AC is on. Doesnt happen until engine is fully warm and driving for a while with AC on high.
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Aircon whiring sound from dash

08-17-2022, 09:39 AM	#6
zero2sixtyZ Colonel 951 Rep 2,669 Posts Drives: e92 + f15 Join Date: Jan 2012 Location: Cambridge, MA iTrader: (4) Garage List 2007 335i Coupe [9.50] 2015 X5 xdrive50i [10.00]	Same issue here. From other threads, users reported replacing the blower motor does not fix. Haven't taken a look at the RealOEM part diagrams yet, but are there any other potential moving/spinning parts to investigate?
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08-18-2022, 04:33 PM	#7
wmr71 Private First Class 26 Rep 100 Posts Drives: 2016 X5 Msport 50 Join Date: Jan 2017 Location: Atlanta iTrader: (2)	hey folks....I posted this awhile back as I am having a noise from my dash too here is the post:https://f15.bimmerpost.com/forums/sh....php?t=1932942 I took it back into the dealership and they kept it for about a week and came back and and said they believe its the pulley on the AC compressor. it happens with the fan on and off. I've seen a couple posts on here where a dealership/shop replaced the blower motor and it didn't end up fixing the problem. the dealership said they diagnosed it with a stethoscope type of device....I can get OEM compressor for $652 from FCP Euro and I may change it in the winter time if the noise gets louder.
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