[ZacMatic]

Mine was assembled in March, and I've had it for nearly a month. I've driven 603 miles and have not noticed any noises like this. Driven over enough rough surfaces to have become annoyed with the runflats and replaced with different tires

[BeemerBaron]

My sounds like a hollow, barely audible thump/bump coming from the rear - possibly from under the boot somewhere. Barely noticeable, 1 in 5 drives and certain condition, low speed, right sort of undulation in the road, no stereo or rev's, etc.

It is a super stiff car so I attribute it to that. If it's an issue or can be corrected I'm sure BMW will do so in time and I'd be disappointed if a recall or retrofit wasn't available to us early adopters.

For now, it doesnt bother me at all. I love this car, I enjoy driving just as much as my 2021 Porsche 911 4S - that's saying something.

[dszpiro]

Originally Posted by BMWM.D.

Anyone noticed this on their M240? Since day one, I’ve noticed a hollow thump or knock type noise from the rear of the car at lower speeds (<30 mph) on bumpy roads. Almost sounds like it could be a shock or mount. Since I haven’t had the opportunity to drive any other G42s, I figured I’d ask.

I wouldn’t call it loud, but it’s noticeable. Sounds like maybe the right rear, but noises can be deceiving and hard to track down. Anyway, just wanted to see if anyone else noticed anything they thought to be out of the ordinary.

Count me it on this noise / thump. I also thought it might be something under the trunk floor board that was rattling, but based on this thread it would appear to be a design issue.

I sure hope someone from BMW reads this thread.

[BeemerBaron]

It appears there is a BMW Repair Bulletin for the G42 (originally for the G26) out that may be the root cause and fix for this issue;


Service Information Bulletin
RATTLE NOISE FROM TAILGATE
B51 04 22 [SI] March 2022


SITUATION
When driving over rough road surfaces, a rattle noise is present from the tailgate.



Cause
CAUSE
Interference of the tailgate stop pad wedging element.



Measure
MODEL
E-Series Model Description
G26 4 Series Gran Coupe


CORRECTION
Apply anti-friction coating.



PROCEDURE

1. Clean the stop pad wedging element (circled) using cleaner R2 P/N 83 19 0 417 324 or a suitable ethanol/water mixture. Allow the cleaner to dry.



2. Apply Berucoat AK 978 P/N: 83 19 2 358 109 anti-squeak paint to the wedging element. Allow the anti-squeak paint to dry for 8 minutes with the tailgate open.
3. Close the tailgate and retest the vehicle.

PARTS INFORMATION


Part Number Description Quantity
83 19 0 417 324 BMW Group R2 Brake Pedal Assembly Aid - (500 ml) Sublet as necessary
83 19 2 358 109 Anti-squeak paint Berucoat AK 978 (100 ml) Sublet as necessary


CLAIM INFORMATION

Covered under the terms of the BMW New Vehicle Limited Warranty for Passenger Cars and Light Trucks.



Defect Code: 5124403900 Tailgate wedging element Unpleasant noises


Only one Main work flat rate labor operation code can be claimed per workshop visit.



Labor Operation Description Labor Allowance
51 99 000 Work time to apply anti-squeak paint (Main work) 4 FRU
Or:
51 99 000 Work time to apply anti-squeak paint (Plus work – Vehicle is already in the workshop) 2 FRU


And, as needed:



Sublet – Bulk Materials (RO and Claim Comments Required)



Sublet Code 4 See the sublet reimbursement calculations below Reimbursement for the repair-related bulk materials (Do not use the BMW part numbers for claim submission)


Sublet reimbursement calculation for claiming the applicable repair-related bulk materials (BMW part numbers) is at the dealer net price amount for the quantities used plus your center’s handling.



Enter this material cost in sublet and itemize the amount on the repair order and in claim comment section.



Based on which one applies to your center, please refer to SI B01 01 20 or B01 07 20 for the applicable procedure for documenting, claiming, and explaining, on the RO and in the claim comments, your diagnosis work time (WT), job/repair work time (WT), and the vehicle repairs your center performed, unless otherwise required by State law.



QUESTIONS REGARDING THIS BULLETIN

Technical inquiries Submit feedback at the top of this bulletin
Warranty inquiries Please contact the Warranty department by either using the Live Chat that’s available in the Warranty Documentation Portal or through IDS by selecting Coverage, Policy, Coding Questions and Mileage Corrections
Parts inquiries Submit an IDS ticket to the Parts Department


Validity information

Service Information Bulletin Metadata
Model series: ALL
Engine range: ALL
Body style: ALL
Fault codes:

[jmelaw]

Heard this sound from day 1--description as a subtle "loose shock mount" is right on. Didn't help that the GF "didn't hear anything".

Problem is, now that is ALL that I hear every time I get in the damn car. Not that it is loud, but once heard, I can't unhear it--even way in the background. Seems pretty innocuous, but still--shouldn't be there.

Only about 900 miles so far, but annoying as hell. Looking forward to seeing if a solution is found. Frustrating.

ps--where is the mythical "wedge" referenced in the service bulletin? would love to try and adjust/whatever that. Thanks.

[dszpiro]

Originally Posted by jmelaw

...now that is ALL that I hear every time I get in the damn car.

I know what you mean - I hear it constantly too! The only solution I have found is to take the care out on the highway and drive very fast.

[BeemerBaron]

Interestingly after about 3,000km's on my car I don't seem to hear it anymore.

Either I've become conditioned or it's not doing it..

[Rdurty2]

Originally Posted by jmelaw

Heard this sound from day 1--description as a subtle "loose shock mount" is right on. Didn't help that the GF "didn't hear anything".

Problem is, now that is ALL that I hear every time I get in the damn car. Not that it is loud, but once heard, I can't unhear it--even way in the background. Seems pretty innocuous, but still--shouldn't be there.

Only about 900 miles so far, but annoying as hell. Looking forward to seeing if a solution is found. Frustrating.

ps--where is the mythical "wedge" referenced in the service bulletin? would love to try and adjust/whatever that. Thanks.

That bulletin is for the g26 4 series. I poked around looking for what the bulletin talks about and couldn’t find anything that looks like the wedge in their pictures

[BeemerBaron]

Originally Posted by Rdurty2

That bulletin is for the g26 4 series. I poked around looking for what the bulletin talks about and couldn’t find anything that looks like the wedge in their pictures

Yep, for some reason it's listed in the G42 Bulletins (as are a bunch of other G20, etc) but the M240i doesnt have the wedge it refers to.

Very odd. It seems BMW are aware of a sound in the M240i but haven't referenced a fix correctly in the Bulletin as yet.

[Jack@AUTOID]

So strange I’ve come across this post! I’ve been complaining about this in my car and thought it was the lowering springs I’ve installed around 2k miles ago.

Going to check them anyway but interesting to hear it could be this too!

[BeemerBaron]

Originally Posted by Jack@AUTOID

So strange I’ve come across this post! I’ve been complaining about this in my car and thought it was the lowering springs I’ve installed around 2k miles ago.

Going to check them anyway but interesting to hear it could be this too!

I just installed the MSS lowering spring kit - I had the thump before I installed the kit but I think the thump occurs more regularly since I've installed the springs, which is understandable - slightly stiffer, harder rebound, etc

TBH I hardly notice the thump it doesnt bother me at all, it just reminds of how stiff the chassis is on this machine

[LivingInSalt]

This is all giving me flashbacks to the infamous E46 M3 Clunk

[Value]

“Ride comfort on the open road is good too, absorbing large obstacles with a muted thump and covering up small ones almost completely” - Motor1

https://www.motor1.com/reviews/54838...rst-drive/amp/

[jmelaw]

[QUOTE=Value;29081878]“Ride comfort on the open road is good too, absorbing large obstacles with a muted thump and covering up small ones almost completely” - Motor1

Not related to "large obstacles". In fact, it's at small amplitude/lower speeds that it's present.

Thought about it and, while kind of "loose shock mount" sound, it's more like a softball in a wooden box in the trunk bouncing around.

Anyone get any resolution/resources for this? STILL driving me nuts....

[Rickbollocks]

I contacted my local BMW Service Center in MA this week. They said they have had no service bulletins or have heard other complaints about this issue. This may be because there are just not a lot of 22 240's out there. They asked me to bring it in, which I will. While the noise is a tad annoying, I can live with it but is it causing additional damage to surrounding components is my question!

[ryo-]

how many miles did you guys have when you first heard the noise? I just broke 1k and still have not heard it yet.

[jmelaw]

Originally Posted by ryo-

how many miles did you guys have when you first heard the noise? I just broke 1k and still have not heard it yet.

From day 1. At 17XX miles and still there.
Thinking of selling this car--not for this reason, but it's damn annoying and doesn't endear the car to me. Maybe if my OCD wasn't so bad I wouldn't be bothered......

[markos79]

Did anyone solve this problem? After 2000 km this issue appeared in my M240. In next week I will deliver my car to dealer for inspection. but maybe you found a solution before.

[SN1P3]

Doesn't bother me anymore but it's def still there.

Been there since day 1 and I'm at 7k miles now

[BMWM.D.]

Yeah… I’m only at 2500 miles, but it’s still there. I’ve just learned to ignore it at this point. It’s pretty irritating if you’re fixated on it, but otherwise it’s a fairly minor complaint. I pretty much gave up on trying to fix it after I drove another car that made identical sounds.

I’m keeping an eye out for new service bulletins or advanced information from BMW, but nothing as of right now.

[markos79]

Solved
My dealer fixed this problem. There was something wrong with boot lid. For sure it was not a suspension.

Driving without this annoying noise... priceless

[Rdurty2]

Originally Posted by markos79

Solved
My dealer fixed this problem. There was something wrong with boot lid. For sure it was not a suspension.

Driving without this annoying noise... priceless

What exactly did they do? That info would help out a ton of people.