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  #1  
Old 05-13-2019, 10:24 AM
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Squeak in 2011 e70 35d

Hi all. Our x35 Diesel just started this annoying squeak, I've disassembled a part of the dash and when I put my scope the squeak is very strong in the metal sub-assembly inside the dash.

But I have no idea where to start as I think it's coming from just under the dash but is also audible from outside the car.

It's pretty much when the car is moving. I've spent about 3 or 4 hours poking around, took apart most of the dash but short of removing the dashpad and wondering how others have dealt with it.

Not really looking forward to another insane dealer bill. Last one was $1800.

Here's a short recording of the sound.

https://photos.app.goo.gl/d1hsviwkU24wsb1YA
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  #2  
Old 05-13-2019, 10:29 AM
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Check the front strut mounts. See if the foam "bushing" has deteriorated. If so, it's likely your strut mount washer is rubbing on the chassis. This was the exact sound we got from our 35d (but applicable to any e70). I have some pictures of what to look for. There are a few threads on the problem here.

Here you go:

https://xoutpost.com/bmw-sav-forums/...ssemblies.html

The "dirt" that you see in the pictures is actually deteriorated foam. The offending washer is that large one under the aluminum brace in the picture. BTW, this will continue to get worse and eventually start knocking. Possibly damage something if in continued use. Take a look. I'm pretty sure that's your issue, but if you're lucky I'm wrong. Probably not a cheap repair if you have a dealer or indy do it.



Edit: That washer is supposed to sit in the middle of the chassis hole for the strut mount. Here's a shot of a failed one vs a replaced one. This is exactly what ours looked like except the washer was actually rubbing against the chassis area. Photos courtesy of Funfdreisig.



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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)

Last edited by crystalworks; 05-13-2019 at 10:41 AM.
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  #3  
Old 05-13-2019, 10:37 AM
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Cool will check out - would you think the top ones have the 'bushing'

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Old 05-13-2019, 10:43 AM
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^The washer should be in the middle of the circle in the chassis. If it's not, one (probably more) of the foam bushings have failed and your strut is leaning in causing the washer to rub on the chassis.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #5  
Old 05-13-2019, 10:44 AM
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Great write up! I'll look and see how we can determine if that's the cause. I already have some lower control arm clunks so the suspension needs to come off.
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  #6  
Old 05-13-2019, 10:48 AM
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Quote:
Originally Posted by bryancdurkin View Post
Great write up! I'll look and see how we can determine if that's the cause. I already have some lower control arm clunks so the suspension needs to come off.
You'll be surprised how much better the X drives after a suspension refresh. We thought ours was pretty smooth and didn't have any major (noisy) failures excepting the upper strut bushing failure. But if everything was coming off we were going to replace it all. Feels extremely tight and solid now. Much better drive and the alignment came into spec perfectly.
__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #7  
Old 05-14-2019, 08:26 AM
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I found the same degraded foam under both strut mounts, so that's the path we will take. I guess it makes sense to change out the struts as well because we are there right? This is gonna be pricey.
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Old 05-14-2019, 09:52 AM
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Quote:
Originally Posted by bryancdurkin View Post
I found the same degraded foam under both strut mounts, so that's the path we will take. I guess it makes sense to change out the struts as well because we are there right? This is gonna be pricey.
I changed everything BUT the struts. Probably should have... and wish I had, but the truck has been driving phenomenally even still. All in for the front tension arms, inner/outer tie rods, lower control arms, sway bar end links, upper wishbones, strut mounts, and all the little foam pieces cost was ~$700 IIRC. Alignment was another $160. Not horrible. Took me about 6 hours to install due to fender liner removal. I can only imagine what a shop would charge to do this service. I'd guess at least $2000.
__________________
2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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