[Mike01ci]

I got my car back from the dealer last week (it needed a bunch of stuff). Car has 6,500 miles on it, production date 2/19/16. It is a manual.

I complained that I heard an intermittent noise (it sounded like the aluminum cans dropping like everyone described on here). The dealer told me they couldn't replicate it.

Fast forward to the next morning and the sound has multiplied.

Anyways, should I have this thing flatbeded to the dealership, or is it fine getting another 10 miles on it?

Here is what I have now:

[Aronis]

That sounds like the Dealers Head stuck up his a**. Something is messed up.

Mike

[McPurrs]

Call your dealer and ask them to tow it on their dime.. I wouldn't drive it.

[Aronis]

Originally Posted by McPurrs

Call your dealer and ask them to tow it on their dime.. I wouldn't drive it.

FLAT BED ONLY!

Mike

[PackPride85]

Might be a rock lodged in the brake shield. They usually drop out eventually (hence the intermittent noise) but occasionally can get stuck....or it could be something worse.

Either way I'd probably get it towed which is covered under warranty anyway.

[S1monQc]

Search is your friend..

http://f87.bimmerpost.com/forums/sho....php?t=1310964

[Wangspeed]

Does it happen in neutral? Not sure how you pop the DCT into neutral while moving, but if you can, and it still happens, then it is almost surely rocks stuck in the rotor shield.

[Mike01ci]

Originally Posted by Wangspeed

Does it happen in neutral? Not sure how you pop the DCT into neutral while moving, but if you can, and it still happens, then it is almost surely rocks stuck in the rotor shield.

Yes, it does happen in neutral / the clutch engaged while rolling (it is a manual). However, if you listen to the second video, it is random noises while under load.

[seis-speed]

Originally Posted by PackPride85

Might be a rock lodged in the brake shield. They usually drop out eventually (hence the intermittent noise) but occasionally can get stuck....or it could be something worse.

Either way I'd probably get it towed which is covered under warranty anyway.

I get this all the time in my F80. Usually go over some bumps just to let the pebble get free. Freaked me out first time I heard it, but then read that several others had similar issues.

[W///]

Originally Posted by Mike01ci

Agreed. I looked at all of this before I took the car in the first time. Like I said, the dealer told me my car was perfect/ not affected by the TSB.

I'd flat bed that for sure. Good thing you have video evidence. There's no way in hell they can say that's a normal sound.

[Tag]

There's a revised brake shield for this issue.

Start reading from post #203.
http://f87.bimmerpost.com/forums/sho...310964&page=10

[Mike01ci]

Thanks everyone!

[akkando]

Originally Posted by Tag

There's a revised brake shield for this issue.

Start reading from post #203.
http://f87.bimmerpost.com/forums/sho...310964&page=10

The first video sounds like the brake shield soda crunch issue. I had the noise and pushed the dealer to swap with the new brake shields and never heard the noise again after the swap. They didn't want to make the swap because their tech didn't hear it even though I had video evidence as well. I asked them if I needed to make a video driving by their dealership while it sounds like my exhaust falls and then post the video telling people the dealer refuses to fix the issue.... Then they agreed to fix it without the tech having reproduced it themselves...

The last two videos sounds different to me....

Good luck.

[Mike01ci]

Originally Posted by akkando

The first video sounds like the brake shield soda crunch issue. I had the noise and pushed the dealer to swap with the new brake shields and never heard the noise again after the swap. They didn't want to make the swap because their tech didn't hear it even though I had video evidence as well. I asked them if I needed to make a video driving by their dealership while it sounds like my exhaust falls and then post the video telling people the dealer refuses to fix the issue.... Then they agreed to fix it without the tech having reproduced it themselves...

The last two videos sounds different to me....

Good luck.

Thanks, I will keep everyone posted. It is going back into the dealer in about an hour. They are giving me something from Hertz to drive.

@akkando, thanks for reading/watching everything.

[Pic18]

Originally Posted by akkando

The first video sounds like the brake shield soda crunch issue. I had the noise and pushed the dealer to swap with the new brake shields and never heard the noise again after the swap. They didn't want to make the swap because their tech didn't hear it even though I had video evidence as well. I asked them if I needed to make a video driving by their dealership while it sounds like my exhaust falls and then post the video telling people the dealer refuses to fix the issue.... Then they agreed to fix it without the tech having reproduced it themselves...

The last two videos sounds different to me....

Good luck.

I agree the first video definitely sounds like the tell-tale rock behind shield sound, but the others do not. Did you try lightly shaking your rear brake shields to see if any rocks fall out? also do you see any rock shavings in the wheels? Might be something different but besides the sounds you would likely see some shavings in the wheel barrel (or worse a circular scratch) if it was a rock.

[reenu]

video sounds like the brake shield soda crunch issue, it is a manual error!!

[Aronis]

Originally Posted by PackPride85

Might be a rock lodged in the brake shield. They usually drop out eventually (hence the intermittent noise) but occasionally can get stuck....or it could be something worse.

Either way I'd probably get it towed which is covered under warranty anyway.

I thought that also but listened again and disagree. I had that happen when I first picked up the car LOL.

Mike

[Mike01ci]

Talked with the shop foreman when I dropped it off yesterday. He doesn't think its the shields, but he is going to look. They are going to start by draining the diff fluid looking for anything and go from there.

The dealer was awesome to get it in so fast.

Still no updates, but I guess no news is good news....

[Mike01ci]

And.... we have our answer. Diff is ordered and I will have the car back on Friday.

ps: I am a little surprised no one made fun of my garage in the first video.

[ZPrime]

Originally Posted by Mike01ci

And.... we have our answer. Diff is ordered and I will have the car back on Friday.

ps: I am a little surprised no one made fun of my garage in the first video.

That's disconcerting (the shards in diff). These are supposedly the same diffs used in the M3/M4, why are they self-destructing in the lower-horsepower car?

[Mike01ci]

Originally Posted by ZPrime

That's disconcerting (the shards in diff). These are supposedly the same diffs used in the M3/M4, why are they self-destructing in the lower-horsepower car?

A little. I get it, BMW gets the diffs from a supplier. The supplier tries cutting costs, a gear was molded wrong causing a stress fracture, or they sourced different metal, or something was simply assembled incorrectly etc etc... Things happen. I am just glad it happened during the warranty.

But the m3/m4 is having the same problem. If it was safety related the TSB would definitely be a recall.

[ZPrime]

That's the scary thing though, problems with a differential can definitely be safety related. If that diff fully locks up / binds and causes a wheel to lock up, the ass of the car is going to come around and who knows what mayhem that might cause.