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M2 Technical Topics > Mechanical Maintenance: Break-in | Oil & Fluids | Servicing | TSB | Recalls > Recall Campaign 2016-438 - Rear Sub-Frame Bolts (M2, M3, M4)

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      10-22-2016, 06:27 AM   #23
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Quote:
Originally Posted by Robin_NL View Post
I'm not hearing any noises from the rear axle/diff but my car was produced may 10th or 12th. I don't remember. Where/how can I find my production date exactly?



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      10-22-2016, 06:32 AM   #24
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Quote:
Originally Posted by Glounk View Post
You tape your vin number here and you have the date Ronin!!!!
https://www.bmwvin.com/
Thanks. I also found this one. http://bimmer.work

Mine was built 10 may 2016



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      10-22-2016, 09:21 AM   #25
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Quote:
Originally Posted by gmzanatta View Post
Yesterday I received the letter below in the mail regarding a new recall campaign for the M2. This has to do with the rear sub-frame bolts, which may not have been installed correctly.

After discussion with my guys, this is unrelated to the rear diff recall and the rear diff bolts that were causing some delays. It is an entirely new issue. According to them, all the MY16's will need to have these replaced and some MY17's.

The issue seems to be way more serious than the rear diff, as per the highlighted paragraphs.

Also note the noise from rear axle description, which seems to be what a lot of folks are hearing, but I'm not sure it if it is the "soda can crunch" or not. I myself have not experienced it.

This is the second time in the 3 months I've owned the car that it has to go in for a recall, very disappointing coming from BMW.
I suppose I am in the campaign also. During my last visit at the dealers place they informed me that 2 bolts should be replaced. I did not ask further explanation but reading this it seems to be for the same reason.

Last edited by Pol; 10-23-2016 at 04:42 AM..
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      10-22-2016, 06:15 PM   #26
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Originally Posted by gmzanatta View Post
It falls on the range, but not all cars were affected. You may be one of the lucky ones!
So while no soda can sound I did have some odd jerking with my MY 16 DCT. It was like it was hunting for a gear at low speed. I had slowed to a stop sign in my hospital parking lot and went to accelerate and it was like it jerked/lurched a couple times then no problem. Has happened on one other occasion. Thoughts?
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      10-22-2016, 11:12 PM   #27
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Quote:
Originally Posted by Robin_NL View Post
Thanks. I also found this one. http://bimmer.work

Mine was built 10 may 2016



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Lol , corrected......no rs4 here
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      10-23-2016, 06:37 AM   #28
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Quote:
Originally Posted by azfootdoc View Post
Quote:
Originally Posted by gmzanatta View Post
It falls on the range, but not all cars were affected. You may be one of the lucky ones!
So while no soda can sound I did have some odd jerking with my MY 16 DCT. It was like it was hunting for a gear at low speed. I had slowed to a stop sign in my hospital parking lot and went to accelerate and it was like it jerked/lurched a couple times then no problem. Has happened on one other occasion. Thoughts?
Typical DCT behavior. It makes you think twice before squirting into a hole in traffic.
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      10-24-2016, 02:25 AM   #29
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Recalls are up dramatically from all manufacturers, the liability that was created by the GM Cobalt ignition debacle and Takata Airbag inflator issue has resulted in manufactures initiating recalls very quickly and very cautiously. The stakes are just too high for them to take a chance to we will continue to see recalls on all new cars as a fairly routine thing. I actually see this as a good thing, issues like the HPFP that BMW dragged their feet on will get resolved immediately in the current climate which will result in safer and more reliable cars for the consumer. It would be great if every car and component was perfect from the factory but that is not possible. Having manufacturers on the hook for the safety of their cars is a good thing.
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      10-24-2016, 06:36 AM   #30
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No letter yet. I have an late May 16 build.
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      10-24-2016, 08:28 AM   #31
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Originally Posted by twin fed View Post
No letter yet. I have an late May 16 build.
Same here w/ a June 2016 build. Might bring it up when I schedule my 1,200 mile service.
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      10-24-2016, 08:37 AM   #32
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I'm assuming the OE bolts are one-time use, "stretch bolts". Their repair procedure didn't identify them as such, and diff replacements were made reusing the original bolts.

While I'd certainly get the car in for a free replacement, it's not likely to be a big deal. You can't count how many times people reuse stretch bolts without realizing it. I don't think you'll see anyone's diff dropping out the bottom of their car. If you're worried about it, get under there with a wrench and make sure they're torqued down every week or so until you get them replaced.
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      10-24-2016, 09:23 AM   #33
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Quote:
Originally Posted by PrematureApex View Post
I'm assuming the OE bolts are one-time use, "stretch bolts". Their repair procedure didn't identify them as such, and diff replacements were made reusing the original bolts.

While I'd certainly get the car in for a free replacement, it's not likely to be a big deal. You can't count how many times people reuse stretch bolts without realizing it. I don't think you'll see anyone's diff dropping out the bottom of their car. If you're worried about it, get under there with a wrench and make sure they're torqued down every week or so until you get them replaced.
Here is the thing though - my rear diff replacement was delayed for a whole week while they waited for the bolts to come in. They weren't allowed to re-use them and used the new set.

This is a different bolt set than the ones they changed out during the diff repair. Both sets should have been changed but BMW only had one done. That is how it was explained to me by my guys, and I was there to see the repair done, so I know they used new bolts on mine.
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      10-24-2016, 09:42 AM   #34
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Nothing here either I know my service and sales guys really well also and they looked into it and as of now nothing and I think mine was an April/May build if I remember correctly and obviously an MY16. They said maybe in the upcoming days I'll get a letter or they'll get a notice and let me know.

They also told me that this "recall issue" is nothing to worry about even if my car is affected by it and not to worry and if anything pops up on their end they'll let me know asap. Obviously they're just trying to make me feel safe about it but still kind of scary to know that all 2016 models are affected according to this forum and that it's a pretty serious issue if affected and still nothing.

Hope it's resolved sooner than later. Been driving with extreme caution since seeing this post. Last thing I need is to lose complete control driving on the highway.
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      10-24-2016, 09:43 AM   #35
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Mid March production, and no probs here.
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      10-24-2016, 09:57 AM   #36
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Quote:
Originally Posted by gmzanatta View Post
Here is the thing though - my rear diff replacement was delayed for a whole week while they waited for the bolts to come in. They weren't allowed to re-use them and used the new set.

This is a different bolt set than the ones they changed out during the diff repair. Both sets should have been changed but BMW only had one done. That is how it was explained to me by my guys, and I was there to see the repair done, so I know they used new bolts on mine.
OK.

Just thinking out loud, they call them "subframe bolts". That's either the 4 bolts holding the subframe to the unibody, or the bolts holding the diff to the subframe, I'd assume anyway. What other "subframe bolts" are there?

Both of those would be removed when replacing the diff (assuming they dropped the subframe to remove the diff).
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      10-24-2016, 12:46 PM   #37
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Quote:
Originally Posted by azfootdoc View Post
So while no soda can sound I did have some odd jerking with my MY 16 DCT. It was like it was hunting for a gear at low speed. I had slowed to a stop sign in my hospital parking lot and went to accelerate and it was like it jerked/lurched a couple times then no problem. Has happened on one other occasion. Thoughts?
Normal. Remember it is an automated manual and not an auto trans. I find that the DCT will lug just like a manual would at times. Once your moving the clutch pack is locked just like a clutch on a manual. If I go into second and real low speed it will rock some just like my manual cars.
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      10-25-2016, 03:44 AM   #38
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Spoke with my dealer yesterday as my Feb 16 build car is booked in for diff replacement on Thursday. Mentioned this recall to him. He checked my vehicle on the system and there was no mention of this recall.
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      10-25-2016, 05:15 AM   #39
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Quote:
Originally Posted by M2Durham View Post
Spoke with my dealer yesterday as my Feb 16 build car is booked in for diff replacement on Thursday. Mentioned this recall to him. He checked my vehicle on the system and there was no mention of this recall.
How did you manage to get your dealer to replace the diff if your build date is outside of the date range on the recall?
I was under the impression Bmw weren't acknowledging earlier cars are effected as yet.
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      10-25-2016, 05:20 AM   #40
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So seeing this recall acknowledges that a sound is being omitted from the rear of the car what do you think the chances are that this is the 'soda can crunch' noise a lot of us are experiencing?
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      10-25-2016, 10:15 AM   #41
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Quote:
Originally Posted by M2Durham View Post
Spoke with my dealer yesterday as my Feb 16 build car is booked in for diff replacement on Thursday. Mentioned this recall to him. He checked my vehicle on the system and there was no mention of this recall.
Mine was built in February but there's no recall on it as of yet.
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      10-25-2016, 10:18 AM   #42
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Ok... so I got mine 06/21/2014 and I have 98.000 km on it at the moment.
Either I am lucky and my car doesn't have the problem or I am a real lucky bastard that the car didn't fall apart so far
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      10-25-2016, 10:32 AM   #43
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Here is the official info!!
Only the cars that had a rear diff replacement are affected....

http://wwwapps.tc.gc.ca/Saf-Sec-Sur/...rchResult&pg=0
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      10-25-2016, 11:00 AM   #44
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Typically issues get ironed out as cars get further in the production cycle. Wonder what's up with their quality control? This makes me happy I have a MY2015 and purchased early on...
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