high pitch beep sounds from engine bay?

danvansan81 · 07-23-2023, 07:30 AM

Hello everyone,
I'm new to Bimmerpost and have a question.
I own a bayside blue M2C since November 2022 and am kinda happy so far.

(usual rear-indicator stuff and so on)

I recently installed the M-Performance front grill and experienced weired beeping sounds from the engine bay, approx at the area around the big charge-pipe on the driver side.

It's a short high pitch Bieeep sound that has no repeating pattern, it just sounds like an anti marten device (which I don't use).

1st time I experienced this was after the "big service" the car had at a BMW dealership (spark plugs, oil, filters etc.).

Online, I've read it could be fuel-related- triggering the HP pumps?

No clue, It's really loud - you can hear it when the car hood is locked and the car is locked too! It disappears after the car is locked for a long time.

doughboy · 07-23-2023, 03:19 PM

Can you post a video or a link to one?

Photos too

danvansan81 · 07-25-2023, 11:10 AM

Hello!
I tried to record it. (mp4) the sound comes from the ChargePipe area driver side.
Excuse the dark video, I am recording/moving above the hood.
Situation: Closed hood, locked car.
These Beeps disappear when the car is locked for a long time.
Does not seem too normal if you ask me.

I uploaded it on an OG German file upload site. If that's not OK with the mods I am going to put it onto my NAS!
https://filehorst.de/d/euEdjrIx

doughboy · 07-25-2023, 11:19 AM

No video ?

danvansan81 · 07-25-2023, 11:20 AM

Sorry, it did exceed the Forum's file size, So put it on an ftp
Put to my NAS too (might need 1min to wake up):
http://gofile.me/6uVX9/pnEnKOoUy

doughboy · 07-25-2023, 11:25 AM

Wow I've never heard anything like that ever before. As far as i know there is nothing capable of beeping like that under the bonnet.

No idea what that is

danvansan81 · 07-25-2023, 11:29 AM

Haha, yep that's what I thought...
Its super weired and very loud.
The only thing I could find online were postings about FuelPumps ect getting "preloaded" resonating on metal and sounding like a beeper.
I might need to investigate this further..... Its really like a parksensor or something - really annoying. Hard to locate.

doughboy · 07-25-2023, 11:35 AM

If the car is off and locked then fuel pump arent running.

When you unlock the car you can hear low pressure fuel pump run, i think it's
in the tank.

High-pressure pumps are engine driven so they won't do anything.

danvansan81 · 07-25-2023, 11:36 AM

this is very similar
https://youtube.com/shorts/3DofvE96yyU?feature=share

doughboy · 07-25-2023, 11:42 AM

Hmm. That sounds more like a solenoid or motor operating, yours seems more like a beeper.

That video is also a 320d, shares almost nothing with your S55

danvansan81 · 07-25-2023, 11:48 AM

Yes, Mine sounds too, like a solenoid contacting with bare metal.
It's very electrical/metallic screechy..
I am going to check if I somehow can locate it better.. :/

Its about here- mid height, maybe even deeper.

Maynard · 07-25-2023, 02:10 PM

get a basic engine stethoscope to locate the source (you can find a local German version, this is just for example: https://www.harborfreight.com/mechan...dbf58b8f221ff7 )

doughboy · 07-26-2023, 01:33 AM

Quote:

Originally Posted by danvansan81

Yes, Mine sounds too, like a solenoid contacting with bare metal.
It's very electrical/metallic screechy..
I am going to check if I somehow can locate it better.. :/

It's about here- mid height, maybe even deeper.

Ok must be my phone, your video sounds like a beeping noise.

RS2OOO · 01-09-2024, 04:41 PM

Hello everyone,

I've just registered here because I'm having exactly the same issue as the OP was and I'm wondering if he ever found the cause?

After turning the engine off and locking the car I'm getting the same noise, it repeats every 30 seconds and lasts around half an hour.

It sounds like an electrical beep on video but in person it sounds like some sort of mechanical noise alongside a pressure release, almost like a locomotive whistle. This is the only case on the internet where I've found someone experiencing what I think is the same issue as me.

Nobody I know, even my local specialist has any idea what it could be.

Here's a video clip where I've jumbled a few instances into a short video:

https://youtube.com/shorts/Wu7a4uc8c...jriMFEOi24CrYl

Brandt51 · 01-10-2024, 02:43 PM

That’s just your R2 Astromech droid.

Benou · 01-16-2024, 05:41 PM

Quote:

Originally Posted by RS2OOO

Hello everyone,

I've just registered here because I'm having exactly the same issue as the OP was and I'm wondering if he ever found the cause?

After turning the engine off and locking the car I'm getting the same noise, it repeats every 30 seconds and lasts around half an hour.

It sounds like an electrical beep on video but in person it sounds like some sort of mechanical noise alongside a pressure release, almost like a locomotive whistle. This is the only case on the internet where I've found someone experiencing what I think is the same issue as me.

Nobody I know, even my local specialist has any idea what it could be.

Here's a video clip where I've jumbled a few instances into a short video:

https://youtube.com/shorts/Wu7a4uc8c...jriMFEOi24CrYl

I have my car stored during the winter and the other the day when I had the car running for a little I heard the EXACT same noise after locking the car. I ignored it because the car makes all kinds of weird noises when unlocking/locking but stumpling upon this post made me question if it's something of worry. Did you possibly find some new info? I haven't heard it before, maybe it's related to the car not being driven. I also have my car plugged into a trickle charger. Do you drive yours and are you trickle charging it? Feels like it could be related to that in some way since it's probably nothing mechnical.

RS2OOO · 01-17-2024, 04:32 AM

Quote:

Originally Posted by Benou

I have my car stored during the winter and the other the day when I had the car running for a little I heard the EXACT same noise after locking the car. I ignored it because the car makes all kinds of weird noises when unlocking/locking but stumpling upon this post made me question if it's something of worry. Did you possibly find some new info? I haven't heard it before, maybe it's related to the car not being driven. I also have my car plugged into a trickle charger. Do you drive yours and are you trickle charging it? Feels like it could be related to that in some way since it's probably nothing mechnical.

Oddly enough, the first time I heard it, I had indeed attached a trickle charger (CTEK). The car was locked with keys locked away in faraday box and the bonnet open for the charger.

Removing the trickle charger didn't stop the "beeps".

At the time I assumed the car had been doing this before and I only heard it this time because the bonnet was open.

Unfortunately the car did it again after the next drive, no trickle charger attached.

I found a post on reddit with someone having the exact same issue and the noise was identical to mine, only their car was a 335d.

This leads me to conclude the issue may be associated with a common part, as opposed to being specifically M2 / S55 related.

I messaged various M specialists I know and all but one replied to say they had no idea what the noise is and would need to witness it in person.

Then one specialist replied to say he thinks its to do with the throttle body adaptations and he'd send me some instructions to follow (maybe to manually reset the adaptations? He didn't say). Anyway I'm still waiting for him to get back to me.

David1 · 01-17-2024, 05:46 AM

All of my BMWs since 2006, have made this beep noise to varying degree once in a while, it is nothing to worry about. Out of the many cars no alien has come out from under the hood 😁

RS2OOO · 01-17-2024, 07:59 AM

Quote:

Originally Posted by David1

All of my BMWs since 2006, have made this beep noise to varying degree once in a while, it is nothing to worry about. Out of the many cars no alien has come out from under the hood 😁

But have any been continuing every 30 seconds for over half an hour after locking and leaving the car?

That part doesn't seem right to me, especially considering the first time it was after a short 20 minute drive.

David1 · 01-17-2024, 12:24 PM

Sometimes it would go for almost an hour other times. It will stop after a minute. Now my 21 comp has yet to do it. It makes other clicky noises.

asarig · 01-27-2024, 10:20 AM

I uploaded a video of my BMW high pitch very annoying sound.

https://youtube.com/shorts/sYfR7HvoW...7xgD6oK5RHuOsV

It starts when I drive for a while. Stops when I turn the car off

Any insights? It is pretty annoying.

Thanks!

RS2OOO · 02-01-2024, 05:35 AM

Quote:

Originally Posted by asarig

I uploaded a video of my BMW high pitch very annoying sound.

https://youtube.com/shorts/sYfR7HvoW...7xgD6oK5RHuOsV

It starts when I drive for a while. Stops when I turn the car off

Any insights? It is pretty annoying.

Thanks!

On video its hard to tell if its a beep or a whistle.

I have a feeling mine is related to the throttle bodies, I followed instructions to 'reset the adaptations' which some say does nothing, but mine has not made the noise since (only 2 journeys so far).

If it is a whistle on yours then maybe it is throttle body related, or some kind of vacuum or air leak.

07-23-2023, 07:30 AM	#1
danvansan81 Enlisted Member 29 Rep 31 Posts Drives: M2C ; MR2 MKII Turbo ; E36 Join Date: Nov 2022 Location: Stuttgart iTrader: (0)	high pitch beep sounds from engine bay? Hello everyone, I'm new to Bimmerpost and have a question. I own a bayside blue M2C since November 2022 and am kinda happy so far. (usual rear-indicator stuff and so on) I recently installed the M-Performance front grill and experienced weired beeping sounds from the engine bay, approx at the area around the big charge-pipe on the driver side. It's a short high pitch Bieeep sound that has no repeating pattern, it just sounds like an anti marten device (which I don't use). 1st time I experienced this was after the "big service" the car had at a BMW dealership (spark plugs, oil, filters etc.). Online, I've read it could be fuel-related- triggering the HP pumps? No clue, It's really loud - you can hear it when the car hood is locked and the car is locked too! It disappears after the car is locked for a long time.
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07-23-2023, 03:19 PM	#2
doughboy Major General 1545 Rep 8,970 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	Can you post a video or a link to one? Photos too
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07-25-2023, 11:10 AM	#3
danvansan81 Enlisted Member 29 Rep 31 Posts Drives: M2C ; MR2 MKII Turbo ; E36 Join Date: Nov 2022 Location: Stuttgart iTrader: (0)	Hello! I tried to record it. (mp4) the sound comes from the ChargePipe area driver side. Excuse the dark video, I am recording/moving above the hood. Situation: Closed hood, locked car. These Beeps disappear when the car is locked for a long time. Does not seem too normal if you ask me. I uploaded it on an OG German file upload site. If that's not OK with the mods I am going to put it onto my NAS! https://filehorst.de/d/euEdjrIx Last edited by danvansan81; 07-25-2023 at 11:19 AM.. Reason: attachment
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07-25-2023, 11:19 AM	#4
doughboy Major General 1545 Rep 8,970 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	No video ?
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07-25-2023, 11:20 AM	#5
danvansan81 Enlisted Member 29 Rep 31 Posts Drives: M2C ; MR2 MKII Turbo ; E36 Join Date: Nov 2022 Location: Stuttgart iTrader: (0)	Sorry, it did exceed the Forum's file size, So put it on an ftp Put to my NAS too (might need 1min to wake up): http://gofile.me/6uVX9/pnEnKOoUy
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07-25-2023, 11:25 AM	#6
doughboy Major General 1545 Rep 8,970 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	Wow I've never heard anything like that ever before. As far as i know there is nothing capable of beeping like that under the bonnet. No idea what that is
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07-25-2023, 11:29 AM	#7
danvansan81 Enlisted Member 29 Rep 31 Posts Drives: M2C ; MR2 MKII Turbo ; E36 Join Date: Nov 2022 Location: Stuttgart iTrader: (0)	Haha, yep that's what I thought... Its super weired and very loud. The only thing I could find online were postings about FuelPumps ect getting "preloaded" resonating on metal and sounding like a beeper. I might need to investigate this further..... Its really like a parksensor or something - really annoying. Hard to locate.
	Appreciate 0 Quote

07-25-2023, 11:35 AM	#8
doughboy Major General 1545 Rep 8,970 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	If the car is off and locked then fuel pump arent running. When you unlock the car you can hear low pressure fuel pump run, i think it's in the tank. High-pressure pumps are engine driven so they won't do anything.
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07-25-2023, 11:36 AM	#9
danvansan81 Enlisted Member 29 Rep 31 Posts Drives: M2C ; MR2 MKII Turbo ; E36 Join Date: Nov 2022 Location: Stuttgart iTrader: (0)	this is very similar https://youtube.com/shorts/3DofvE96yyU?feature=share
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07-25-2023, 11:42 AM	#10
doughboy Major General 1545 Rep 8,970 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	Hmm. That sounds more like a solenoid or motor operating, yours seems more like a beeper. That video is also a 320d, shares almost nothing with your S55
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07-25-2023, 11:48 AM	#11
danvansan81 Enlisted Member 29 Rep 31 Posts Drives: M2C ; MR2 MKII Turbo ; E36 Join Date: Nov 2022 Location: Stuttgart iTrader: (0)	Yes, Mine sounds too, like a solenoid contacting with bare metal. It's very electrical/metallic screechy.. I am going to check if I somehow can locate it better.. :/ Its about here- mid height, maybe even deeper. Attached Images
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07-25-2023, 02:10 PM	#12
Maynard Colonel 3848 Rep 2,873 Posts Drives: 228iX & M2C Join Date: Mar 2016 Location: Upstate NY iTrader: (1)	get a basic engine stethoscope to locate the source (you can find a local German version, this is just for example: https://www.harborfreight.com/mechan...dbf58b8f221ff7 )
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01-09-2024, 04:41 PM	#14
RS2OOO New Member 6 Rep 13 Posts Drives: M2 competition Join Date: Jan 2024 Location: Kent iTrader: (0)	Hello everyone, I've just registered here because I'm having exactly the same issue as the OP was and I'm wondering if he ever found the cause? After turning the engine off and locking the car I'm getting the same noise, it repeats every 30 seconds and lasts around half an hour. It sounds like an electrical beep on video but in person it sounds like some sort of mechanical noise alongside a pressure release, almost like a locomotive whistle. This is the only case on the internet where I've found someone experiencing what I think is the same issue as me. Nobody I know, even my local specialist has any idea what it could be. Here's a video clip where I've jumbled a few instances into a short video: https://youtube.com/shorts/Wu7a4uc8c...jriMFEOi24CrYl Last edited by RS2OOO; 01-10-2024 at 03:22 AM..
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01-10-2024, 02:43 PM	#15
Brandt51 Flavor of the month 889 Rep 716 Posts Drives: BMW F87 M2C Join Date: May 2019 Location: Not Sin City, Nevada iTrader: (0) Garage List 2020 BMW F87 [9.50]	That’s just your R2 Astromech droid. __________________ Samuel of the Internet 2023 F98 X4M Comp 2023 F95 X5M Comp 2020 F87 M2 Comp
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01-17-2024, 05:46 AM	#18
David1 Brigadier General 814 Rep 3,953 Posts Drives: 09 E92 09 X5 Join Date: Mar 2007 Location: Columbus, OH iTrader: (1)	All of my BMWs since 2006, have made this beep noise to varying degree once in a while, it is nothing to worry about. Out of the many cars no alien has come out from under the hood 😁 __________________ 2021 M2 Comp Sunset Orange \|Black with orange Stitching Dakota Leather\|Executive Pkg\|DCT
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01-17-2024, 12:24 PM	#20
David1 Brigadier General 814 Rep 3,953 Posts Drives: 09 E92 09 X5 Join Date: Mar 2007 Location: Columbus, OH iTrader: (1)	Sometimes it would go for almost an hour other times. It will stop after a minute. Now my 21 comp has yet to do it. It makes other clicky noises. __________________ 2021 M2 Comp Sunset Orange \|Black with orange Stitching Dakota Leather\|Executive Pkg\|DCT
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01-27-2024, 10:20 AM	#21
asarig Registered 0 Rep 1 Posts Drives: BMW 2 grand tour Join Date: Jan 2024 Location: Europe iTrader: (0)	Same wired nose, different pitch, very annoying 🙀 I uploaded a video of my BMW high pitch very annoying sound. https://youtube.com/shorts/sYfR7HvoW...7xgD6oK5RHuOsV It starts when I drive for a while. Stops when I turn the car off Any insights? It is pretty annoying. Thanks!
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