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Knocking noise coming from roof/bulkhead behind driver's seat

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Helen Jones
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Helen Jones » Mon Jun 05, 2017 6:16 pm

Hi all

I have a knocking noise coming from the roof/hood cover behind the drivers seat when driving over bumps in the road.

The car's been to BMW three times now with only limited success! They've tightened something in the roof but I still get a knocking when going over certain bumps in the road and it's driving me to distraction!

It sounds like a 'plastic' noise so it leads me to think that it's something to do with the plastic roof cover.

Has anybody had similar and/or have any advice?

Thanks

H
2014 Mineral White 20i sDrive

sticky

Knocking noise coming from roof/bulkhead behind driver's seat

Post by sticky » Mon Jun 05, 2017 6:47 pm

Helen Jones wrote: ↑Mon Jun 05, 2017 6:16 pm Hi all

I have a knocking noise coming from the roof/hood cover behind the drivers seat when driving over bumps in the road.

The car's been to BMW three times now with only limited success! They've tightened something in the roof but I still get a knocking when going over certain bumps in the road and it's driving me to distraction!

It sounds like a 'plastic' noise so it leads me to think that it's something to do with the plastic roof cover.

Has anybody had similar and/or have any advice?

Thanks

H
Move your seat forward, might help

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Helen Jones
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Helen Jones » Mon Jun 05, 2017 6:51 pm

I'm a short ar*e so my seat's already quite far forward! πŸ˜ƒ
2014 Mineral White 20i sDrive

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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Chris_D » Mon Jun 05, 2017 7:01 pm

Sell it. Buy an e85 or wait for the new z4 ragtop.
Yw :thumbsup:
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Dr-Jon » Mon Jun 05, 2017 7:34 pm

look out for posts from Maniac he has extensive knowledge of cabin noises and has written a few posts on the subject
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Dr-Jon » Mon Jun 05, 2017 7:35 pm

Chris_D wrote: ↑Mon Jun 05, 2017 7:01 pm Sell it. Buy an e85 or wait for the new z4 ragtop.
Yw :thumbsup:
Chris thats not very helpful is it... be nice
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Chris_D » Mon Jun 05, 2017 7:38 pm

Dr-Jon wrote: ↑Mon Jun 05, 2017 7:35 pm
Chris_D wrote: ↑Mon Jun 05, 2017 7:01 pm Sell it. Buy an e85 or wait for the new z4 ragtop.
Yw :thumbsup:
Chris thats not very helpful is it... be nice
Maybe/maybe not helpful but certainly pragmatic...
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Helen Jones
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Helen Jones » Tue Jun 27, 2017 9:08 pm

Well, four attempts by the BMW dealer and it's still not fixed!!

Awaiting a call from the senior technician to arrange to come out and drive the car with me (again) to hear the noise (again)!! Then it'll go in for the fifth time!!!

BMW UK are no help either, just told me that they can't do anything until they've got a diagnosis from the technician!!

I can't believe mine is the only car that's ever had this problem.

Seriously fallen out of love with the car and BMW :(
2014 Mineral White 20i sDrive

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Knocking noise coming from roof/bulkhead behind driver's seat

Post by ronk » Tue Jun 27, 2017 9:34 pm

Helen Jones wrote: ↑Tue Jun 27, 2017 9:08 pm
Seriously fallen out of love with the car and BMW :(
It's only a rattle and they will find it - don't give up !
You don't stop playing when you get old - You get old when you stop playing!
So I bought a 35is with all the toys to play with. :thumbsup:

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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Vonlipvig » Tue Jun 27, 2017 10:32 pm

I had a knocking sound when going over bumps and the wheel was offloading, drivers side rear. For me I noticed it roof up or down, turned out it was a broken coil. May well be completely different to what you are experiencing, but might be worth a look if not already done. Be nice to know what it turns out to be, always useful for something to look out for
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Smartbear » Tue Jun 27, 2017 10:41 pm

Could be the rear deck knocking, use the search on here & you should find lots of tips for placing felt pads etc in different locations to cure buzzes/rattles :thumbsup:
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Helen Jones
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Helen Jones » Tue Jun 27, 2017 10:43 pm

It does sound like the rear deck to me but haven't come up with much searching on here... will keep looking.
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Smartbear » Tue Jun 27, 2017 10:51 pm

Helen Jones wrote: ↑Tue Jun 27, 2017 10:43 pm It does sound like the rear deck to me but haven't come up with much searching on here... will keep looking.
Here you go Helen :thumbsup:
http://e89.zpost.com/forums/showthread.php?t=774513
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e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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Helen Jones
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Knocking noise coming from roof/bulkhead behind driver's seat

Post by Helen Jones » Tue Jun 27, 2017 11:02 pm

Brilliant, thanks!! 😁
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