El30 wroteI would try to get it reflowed or re-soldered first to make sure there isn't a cold solder joint before attempting to completely replace the part.Yeah they look fine, as far as I can see….I tried putting some hot glue on the back side as well but didn’t help. It needs quite a bit force on the side to stop it from making the noise. You can hear the frequency changing a bit depending on how much force it used
55.6KVIEWS
152REPLIES
15APPRECIATES
48ACTIVE PEOPLE
04-12-2026LAST POST
bagd0003 wroteOk…do you think that could be an issue with the manufacturing process of the board? I ask because I have a replacement unit (complete HVAC control assembly) and has the same high pitch frequency. That’s why I was leaning more towards a “bad” or cheap part that is being used.I would try to get it reflowed or re-soldered first to make sure there isn't a cold solder joint before attempting to completely replace the part.
Thanks
El30 wroteWell, if reflowing fixes the issue, then that would mean a poor soldering job during manufacturing.Ok…do you think that could be an issue with the manufacturing process of the board? I ask because I have a replacement unit (complete HVAC control assembly) and has the same high pitch frequency. That’s why I was leaning more towards a “bad” or cheap part that is being used.
Thanks
bagd0003 wroteAlso, I just chatted with my electrical engineer buddy, he confirmed that reflowing is a good and easy start, but this could also be a normal circuit operation. He suggested gluing some weight (lead?) to it that could help attenuate the noise.Well, if reflowing fixes the issue, then that would mean a poor soldering job during manufacturing.
bagd0003 wroteOk thanks and appreciate the feedback! I’ll try the reflowing route and see how that works.Also, I just chatted with my electrical engineer buddy, he confirmed that reflowing is a good and easy start, but this could also be a normal circuit operation. He suggested gluing some weight (lead?) to it that could help attenuate the noise.
Test drove a 2019 X5 M50i today and upon entering I immediately noticed the sound, later could isolate the source as the AC display (color version).
Very glad I found this thread here (or not, because it seems to be a general problem).
Any update from anyone? Did you try replacing with a newer part, now it‘s 2024 and maybe the supplier fixed this?
Best, Fabian
angschte wroteNo updates on my end….found the source but haven’t been able to stop the whine. I am going to, in the next few weeks, pull the chip and attach leads to it removing it from the board. I’ll see if that helps any. I’ve tried a lot of simpler solutions like putting hot glue on it, silicone, putting a bunch of dense foam in front of it but still permeates through. I had it reflowed but nothing.Hi everyone,
Test drove a 2019 X5 M50i today and upon entering I immediately noticed the sound, later could isolate the source as the AC display (color version).
Very glad I found this thread here (or not, because it seems to be a general problem).
Any update from anyone? Did you try replacing with a newer part, now it‘s 2024 and maybe the supplier fixed this?
Best, Fabian
El30 wroteThanks for getting back with an update. It‘s still mesmerizing to me how something like that can a) pass quality control in the first place and b) that BMW does not manage to fix the root cause by updating the design or component on this board.No updates on my end….found the source but haven’t been able to stop the whine. I am going to, in the next few weeks, pull the chip and attach leads to it removing it from the board. I’ll see if that helps any. I’ve tried a lot of simpler solutions like putting hot glue on it, silicone, putting a bunch of dense foam in front of it but still permeates through. I had it reflowed but nothing.
Let us know if you find a cure. I will be driving another X5 - same year - on the weekend and report back if I can hear it to the same level there.
angschte wroteSo after driving another 2019 X5: the hissing noise was there, but much less loud than in the first car. I could only hear it when having my ear close to the AC display. Would not have bothered me here.I will be driving another X5 - same year - on the weekend and report back if I can hear it to the same level there.
Therefore I think there are varying degrees of boards out there.
Have people been able to get this part replaced or fixed?
As far as adding something heavy, I didn’t try that but not sure if that would help. It took a large amount of pressure using my finger on the side of the chip to stop the noise. To the point where the pressure was excessive for that chip. I was just try to insulate the noise with the other material but since it still permeates through.
To date, I’ve just left it alone as I got tired of constantly messing with it. I think if that chip can get replaced with a different that may help, but I was never able to find what the chip number is or some other identifier that I could find online.
Super bummed.....replacing my 3 series due to back pain but I'd rather be in pain than listen to this.
RamboM340 wroteJust to update for anyone looking into this.....Had the dealer look and confirmed the noise.Just picked up a 23 X5 M50i and this noise is driving me insane. Has anyone found a solution for it? All these hvac control units look the same across BMW, makes me wonder if you can swap to another. M340i doesn't have this issue but is not a colored display.
Super bummed.....replacing my 3 series due to back pain but I'd rather be in pain than listen to this.
They replaced the whole climate control panel w/ "64-11-5-A1D-414" , initially the sound was gone but after a day it came back. It is a lot more mild and livable now though....
So replacing with newest part will not solve the issue completely and in time who knows mine might get worse.
What actually fixed it for me had nothing to do with the climate system. It ended up being the exterior windshield panels. I had posted about them earlier. Once those were addressed, the noise was completely gone.
I even had the shop foreman ride with me so I could replicate the sound. I made it clear I was not taking the vehicle back until we figured it out and resolved it. Once they corrected the windshield panel issue, the problem was fully fixed.
The fix:
They replaced all of the plastic windshield trim on the sides and a few other areas.
https://g05.bimmerpost.com/forums/showthread.php?t=1589172&page=6
aztec wroteI wish it really was that easy in my experience but the sounds literally goes away when the AC control panel was disconnected....not to mention its present with car off and not moving.I see a lot of you are still dealing with this. I was in the exact same situation and was convinced the high pitch noise was coming from the front climate control area, just like many of you mentioned.
What actually fixed it for me had nothing to do with the climate system. It ended up being the exterior windshield panels. I had posted about them earlier. Once those were addressed, the noise was completely gone.
I even had the shop foreman ride with me so I could replicate the sound. I made it clear I was not taking the vehicle back until we figured it out and resolved it. Once they corrected the windshield panel issue, the problem was fully fixed.
The fix:
They replaced all of the plastic windshield trim on the sides and a few other areas.
https://g05.bimmerpost.com/forums/showthread.php?t=1589172&page=6
I think these are 2 separate issues.
This is NOT anything to do with windshield trim, the high pitched noise is there at all times.
The noise is there stationary or not, as long as the car is powered on.
Has anyone achieved any kind of fix? The BMW dealer just said it's normal....
