Unresolved knocking/hollow rear rattle 2022 M50i

alexcus2man · 03-21-2023, 08:23 AM

I have annual oil change appointment scheduled with the dealer in a month, and I plan to raise this with them. However, I am not very confident they will spend a lot of time and diagnose/fix the issue. Wanted to solicit feedback and ideas to give them…

New ‘22 M50i. Absolutely love the vehicle but I have an unresolved knocking or hollow rattle sounding noise that appears to be coming from the rear—possibly favoring driver side. I have checked everything I can to try and replacing and fix the issues for months now. I have placed felt in many places where it might be occurring but to no avail yet.

Noise is heard when going at slow speeds and mostly below 45mph. Doesn’t sound mechanical or suspension related. When momentum of car shifts from front to back or vice versa, the knocking is heard once or twice and then stops when all momentum is going same direction.

I am pretty much out of ideas and solutions at this point and looking for help or others that might have experienced the same thing!

Trunk rubber stoppers (I did the paper test so it’s tight but still pulls out when close). The hatch is still primary suspect in my opinion. I have put felt on the tabs attached to hatch to solve for any hatch side to side movement too.
I have inspected everything in spare tire compartment, nothing seems loose.
I have inspected the loose foam where first aid kit area is stored and made sure it’s not loose (btw my vehicle did not come with anything in that area).
I removed the privacy cover in hatch completely.
The 2nd row seats appear to be solid when pushing against them but this is also possibly a suspect.
I have trunk OEM rubber mat, and I have placed felt on the bottom of the mat.

vinibabs · 03-25-2023, 09:05 AM

Oh God. The dreaded mystery noise.

I will note that when I start my car up, it does make a hollow rattle noise almost like it’s coming from the exhaust. But it disappears within a couple seconds.

josec70 · 03-25-2023, 02:46 PM

I have a similar noise coming from … I usually adjust the stops too ensure they’re not too loose or too tight. I’ve used electric tape on the latches.

The adjustments to the stops seem to work temporarily but the noise seems to always return.

Dealer has looked at it several times …

hufington · 03-26-2023, 10:20 AM

Drink some calming tea and crank up the stereo.
Because, unfortunately 9 out of 10, the service guys won't even be able to replicate or hear the noise. Even if they did, still over 90% chance that it won't be solved. I had a slight rattle in the back of my F15 and the car visited two different dealers four times - once staying there for 3 days- and they applied felt, checked all trim pieces, fixed the rear seat, adjusted the hatch, etc. etc. The noise always came back. I tried myself every suggestion on this forum and online, yet I could still hear it.
Then, I turned to Harmann Kardon, and cranked up the volume!
I hope for you that it gets solved though! Fingers crossed.

SarethX · 03-26-2023, 12:07 PM

Had the same noise. Flip your rear seats and put electrical tape around the metal latches. Been dead silence ever since. Not a single rattle in the car.

MJBradley1967 · 03-27-2023, 10:37 AM

Quote:

Originally Posted by hufington

Drink some calming tea and crank up the stereo.
Because, unfortunately 9 out of 10, the service guys won't even be able to replicate or hear the noise. Even if they did, still over 90% chance that it won't be solved. I had a slight rattle in the back of my F15 and the car visited two different dealers four times - once staying there for 3 days- and they applied felt, checked all trim pieces, fixed the rear seat, adjusted the hatch, etc. etc. The noise always came back. I tried myself every suggestion on this forum and online, yet I could still hear it.
Then, I turned to Harmann Kardon, and cranked up the volume!
I hope for you that it gets solved though! Fingers crossed.

Yet, if the vehicle was no longer under warranty, the dealer would find the problem in 5 minutes?

chefwong · 03-27-2023, 11:00 AM

Stumbled across this thread. So I guess I was not imagining it.
Picked up on the rattle a few times. I turned the volume down each time to pinpoint it. It's somewhere in the rear - aft' left I hear it.
Loud enough for me to hear the rattle even with radio on...

Bking60 · 03-27-2023, 12:13 PM

A mechanic online tore a car half apart looking for a similar noise. Turned out to be a marble in the ashtray.

CIMINI0180 · 03-27-2023, 06:04 PM

Chefwong text me at (609) 802-7110 I am the one who you pm about the tires. I can not pm back since I am a new member and can’t pm for 7-10 days. Thank you.

Rsawterr · 07-25-2023, 05:26 PM

So, I have been noticing these noises possibly since I picked up the vehicle. I will add symptoms…sounds appear to be stronger when the vehicle is “cold” meaning 60-70F. Can “disappear” when warms up. Not noticeable at higher speed cruise. Vaguely relates to road conditions but lots of lag. I suspected fuel sloshing but I believe the tank is at the rear. More pronounced at driver position but passenger can hear it. I have hesitated to challenge my dealers…think about our symptoms. Nightmare diagnosis. My concern has mostly been safety but it is annoying. I am going to look into rear seat latches as suggested by one poster. It has to be something that is heavy and barely loose.

streborx · 07-25-2023, 06:20 PM

No kids, no pets, no rattles or squeaks! (Lol)

apw2607 · 07-26-2023, 09:33 AM

If the G05 is anything like previous iterations of the X5, then it could well be the trunk guidance stops. The trick there is to put some regular electrical tape over them as someone already said. My experience over the years has being unless there is a SIB on the specific issue, you are better off trying to troubleshoot the noise yourself.

03-21-2023, 08:23 AM	#1
alexcus2man Private 62 Rep 82 Posts Drives: '22 X5 M50i Join Date: Mar 2022 Location: St. Louis iTrader: (0)	Unresolved knocking/hollow rear rattle 2022 M50i I have annual oil change appointment scheduled with the dealer in a month, and I plan to raise this with them. However, I am not very confident they will spend a lot of time and diagnose/fix the issue. Wanted to solicit feedback and ideas to give them… New ‘22 M50i. Absolutely love the vehicle but I have an unresolved knocking or hollow rattle sounding noise that appears to be coming from the rear—possibly favoring driver side. I have checked everything I can to try and replacing and fix the issues for months now. I have placed felt in many places where it might be occurring but to no avail yet. Noise is heard when going at slow speeds and mostly below 45mph. Doesn’t sound mechanical or suspension related. When momentum of car shifts from front to back or vice versa, the knocking is heard once or twice and then stops when all momentum is going same direction. I am pretty much out of ideas and solutions at this point and looking for help or others that might have experienced the same thing! Trunk rubber stoppers (I did the paper test so it’s tight but still pulls out when close). The hatch is still primary suspect in my opinion. I have put felt on the tabs attached to hatch to solve for any hatch side to side movement too. I have inspected everything in spare tire compartment, nothing seems loose. I have inspected the loose foam where first aid kit area is stored and made sure it’s not loose (btw my vehicle did not come with anything in that area). I removed the privacy cover in hatch completely. The 2nd row seats appear to be solid when pushing against them but this is also possibly a suspect. I have trunk OEM rubber mat, and I have placed felt on the bottom of the mat.
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03-25-2023, 09:05 AM	#2
vinibabs Private 36 Rep 68 Posts Drives: '22 X5 M50i, Lexus RC350F Spor Join Date: Jan 2022 Location: Chicago, IL iTrader: (0) Garage List 2022 x5 M50i [0.00]	Oh God. The dreaded mystery noise. I will note that when I start my car up, it does make a hollow rattle noise almost like it’s coming from the exhaust. But it disappears within a couple seconds.
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03-25-2023, 02:46 PM	#3
josec70 Major General 4077 Rep 5,235 Posts Drives: 22' Individual Chalk M5C Join Date: Dec 2015 Location: Miami iTrader: (2)	I have a similar noise coming from … I usually adjust the stops too ensure they’re not too loose or too tight. I’ve used electric tape on the latches. The adjustments to the stops seem to work temporarily but the noise seems to always return. Dealer has looked at it several times … __________________ CURRENT: 22' INDIVIDUAL M5\| CHALK \| TARTUFO \| CCB \| MPE \| H&R \| IND GONE: 19' M5C\| SINGAPORE GREY\| ARAGON\|VELOS VLS-06\|H&R\|iPE\|IND\|XPEL\|CF\|RADENSO GONE: 15' F10 M5\|BSM\|BLACK\|VELOS VSS-S2\|KW\|AKRA\|IND\|CF \|ESCORT 360\|VELOS PIGGY GONE: 13' F10 M5\|SG\|BLACK\|AKRA\|KW\|IND LONG GONE: 09' E60 M5\|02' E39 M5
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03-26-2023, 10:20 AM	#4
hufington Major 3121 Rep 1,354 Posts Drives: 2022 X5 m50i Join Date: Mar 2010 Location: North East iTrader: (0) Garage List 2018 Mercedes-Benz ... [0.00]	Drink some calming tea and crank up the stereo. Because, unfortunately 9 out of 10, the service guys won't even be able to replicate or hear the noise. Even if they did, still over 90% chance that it won't be solved. I had a slight rattle in the back of my F15 and the car visited two different dealers four times - once staying there for 3 days- and they applied felt, checked all trim pieces, fixed the rear seat, adjusted the hatch, etc. etc. The noise always came back. I tried myself every suggestion on this forum and online, yet I could still hear it. Then, I turned to Harmann Kardon, and cranked up the volume! I hope for you that it gets solved though! Fingers crossed. __________________ 2022 BMW X5 m50i 2024 MB S63 on order '18 X5 50i / '16 BMW F10 550xi / '13 BMW F10 535i / '07 BMW E64 630i / '03 BMW E65 745i / '95 BMW E34 540i / '89 BMW E30 M3
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03-26-2023, 12:07 PM	#5
SarethX Private 22 Rep 56 Posts Drives: 21 BMW X5 xDrive 40i Join Date: Feb 2013 Location: USA iTrader: (0)	Had the same noise. Flip your rear seats and put electrical tape around the metal latches. Been dead silence ever since. Not a single rattle in the car.
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03-27-2023, 11:00 AM	#7
chefwong Major 365 Rep 1,008 Posts Drives: X5 Join Date: Sep 2007 Location: NYC iTrader: (0)	Stumbled across this thread. So I guess I was not imagining it. Picked up on the rattle a few times. I turned the volume down each time to pinpoint it. It's somewhere in the rear - aft' left I hear it. Loud enough for me to hear the rattle even with radio on...
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03-27-2023, 12:13 PM	#8
Bking60 Private First Class 82 Rep 176 Posts Drives: BMW X5 2019 Join Date: Sep 2020 Location: SC iTrader: (0)	A mechanic online tore a car half apart looking for a similar noise. Turned out to be a marble in the ashtray.
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03-27-2023, 06:04 PM	#9
CIMINI0180 New Member 0 Rep 5 Posts Drives: 2015 BMW M3, 2022 BMW X3M40I Join Date: Mar 2023 Location: NEW JERSEY iTrader: (0)	Chefwong text me at (609) 802-7110 I am the one who you pm about the tires. I can not pm back since I am a new member and can’t pm for 7-10 days. Thank you.
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07-25-2023, 05:26 PM	#10
Rsawterr Registered 0 Rep 1 Posts Drives: 2022 X5 M50i Join Date: Jul 2023 Location: Western PA iTrader: (0)	So, I have been noticing these noises possibly since I picked up the vehicle. I will add symptoms…sounds appear to be stronger when the vehicle is “cold” meaning 60-70F. Can “disappear” when warms up. Not noticeable at higher speed cruise. Vaguely relates to road conditions but lots of lag. I suspected fuel sloshing but I believe the tank is at the rear. More pronounced at driver position but passenger can hear it. I have hesitated to challenge my dealers…think about our symptoms. Nightmare diagnosis. My concern has mostly been safety but it is annoying. I am going to look into rear seat latches as suggested by one poster. It has to be something that is heavy and barely loose.
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07-25-2023, 06:20 PM	#11
streborx Major 655 Rep 1,085 Posts Drives: 2022 BMW X7 M50i Join Date: Jul 2022 Location: Colorado iTrader: (0)	No kids, no pets, no rattles or squeaks! (Lol)
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07-26-2023, 09:33 AM	#12
apw2607 Colonel 583 Rep 2,106 Posts Drives: 2024 X5 50e M-Sport Join Date: Apr 2006 Location: West Coast, USA iTrader: (0)	If the G05 is anything like previous iterations of the X5, then it could well be the trunk guidance stops. The trick there is to put some regular electrical tape over them as someone already said. My experience over the years has being unless there is a SIB on the specific issue, you are better off trying to troubleshoot the noise yourself.
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