Any ideas?

Keebs_yo · 05-20-2022, 12:49 PM

Found this on the floor behind the passenger seat. Perhaps attaches to the underside, but nowhere I can easily see. Not overly concerned.

agustincuenca · 05-24-2022, 12:40 PM

looks like a combination self locking nut from the suspension, is it your stock?

https://www.trodo.com/repair-kit-whe...order-38643-01

similar to what's there... have you laid down on the floor to check?

Keebs_yo · 05-24-2022, 01:06 PM

Quote:

Originally Posted by agustincuenca

looks like a combination self locking nut from the suspension, is it your stock?

https://www.trodo.com/repair-kit-whe...order-38643-01

similar to what's there... have you laid down on the floor to check?

Interesting. No, my suspension is not stock. M-performance HAS, GC camber plates, and DINAN sway bars among other things. I did just have my car in for service at a local performance shop. Think I’ll reach out to them about it.

dms-01 · 05-24-2022, 01:46 PM

There are self locking nuts on top of the struts but they don't look like that. It looks like the one in this pic (at least on the rears):

mapster37 · 05-24-2022, 04:44 PM

What is the history of the vehicle? Any recent repairs performed?

TouringM3 · 05-24-2022, 05:21 PM

You found this on the INTERIOR of your car, correct?
These vinyl-ringed nuts go to the center console and dash area of the car.

My first guess would be one of the two nuts that goes directly behind removable panel hosting the ventilation fans into the rear seat area.

Keebs_yo · 05-24-2022, 07:08 PM

Quote:

Originally Posted by TouringM3

You found this on the INTERIOR of your car, correct?
These vinyl-ringed nuts go to the center console and dash area of the car.

My first guess would be one of the two nuts that goes directly behind removable panel hosting the ventilation fans into the rear seat area.

I did find it on the interior floor behind the passenger seat. I recently had the car into a local performance shop for an oil change and alignment check. They also replaced my cabin air filter which could possibly be the culprit. I contacted the shop and shared the same info and pics with them. Again, I’m not overly concerned about it. Perhaps an extra left behind by mistake or if missing off an interior piece not the end of the world.

mapster37 · 05-24-2022, 07:21 PM

That may be the nut that holds the passenger knee airbag to the dash frame. Its normally removed when replacing the microfilter ....

TouringM3 · 05-25-2022, 11:19 AM

Quote:

Originally Posted by mapster37

That may be the nut that holds the passenger knee airbag to the dash frame. Its normally removed when replacing the microfilter ....

YUP, that's gotta be it

Keebs_yo · 05-25-2022, 05:57 PM

Yep it was from the cabin air filter replacement. Mystery solved! I was thrown off by finding it behind the passenger seat.

05-20-2022, 12:49 PM	#1
Keebs_yo Private First Class 559 Rep 149 Posts Drives: 2017 Laguna Seca Blue DCT M3 Join Date: Jul 2019 Location: Winter Garden, FL iTrader: (0)	Any ideas? Found this on the floor behind the passenger seat. Perhaps attaches to the underside, but nowhere I can easily see. Not overly concerned. Attached Images
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05-24-2022, 12:40 PM	#2
agustincuenca First Lieutenant 154 Rep 342 Posts Drives: 2008 E90 335i; 2016 F80 M3 Join Date: Sep 2014 Location: S Louis iTrader: (0) Garage List 2016 BMW M3 [0.00] 2008 BMW 335i [0.00]	looks like a combination self locking nut from the suspension, is it your stock? https://www.trodo.com/repair-kit-whe...order-38643-01 similar to what's there... have you laid down on the floor to check?
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05-24-2022, 01:46 PM	#4
dms-01 Captain 1131 Rep 830 Posts Drives: 2018 F80 M3 Join Date: Dec 2020 Location: Around iTrader: (2)	There are self locking nuts on top of the struts but they don't look like that. It looks like the one in this pic (at least on the rears):
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05-24-2022, 04:44 PM	#5
mapster37 Captain 362 Rep 923 Posts Drives: F80 Join Date: Sep 2018 Location: Davie iTrader: (2)	What is the history of the vehicle? Any recent repairs performed?
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05-24-2022, 05:21 PM	#6
TouringM3 Lieutenant 620 Rep 498 Posts Drives: '18 F80 6MT / '16 F31 Join Date: May 2020 Location: Bend, OR iTrader: (0) Garage List 2018 F81 M3 Touring [10.00] 2016 F30 328xi Comp ... [0.00]	You found this on the INTERIOR of your car, correct? These vinyl-ringed nuts go to the center console and dash area of the car. My first guess would be one of the two nuts that goes directly behind removable panel hosting the ventilation fans into the rear seat area. __________________ 2018 F81 M3 Touring Project \| Bend, Oregon, USA Instagram: @TouringM3
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05-24-2022, 07:21 PM	#8
mapster37 Captain 362 Rep 923 Posts Drives: F80 Join Date: Sep 2018 Location: Davie iTrader: (2)	That may be the nut that holds the passenger knee airbag to the dash frame. Its normally removed when replacing the microfilter ....
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05-25-2022, 05:57 PM	#10
Keebs_yo Private First Class 559 Rep 149 Posts Drives: 2017 Laguna Seca Blue DCT M3 Join Date: Jul 2019 Location: Winter Garden, FL iTrader: (0)	Yep it was from the cabin air filter replacement. Mystery solved! I was thrown off by finding it behind the passenger seat. Attached Images
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