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2016 z4 condensation

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
clarker63
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2016 z4 condensation

Post by clarker63 » Wed Jan 25, 2023 1:32 pm

Portisz4 wrote: Wed Jan 25, 2023 12:24 pm Hello.
So I have checked around for wet lately in the cockpit .
What I have discovered is above the roof lining is dripping wet. I can see between the lining and the windscreen if I pull back the roof liner slightly. Why would this be wet?
How do I remove the roof liner to investigate ?
Couple of attached images but I can pull it back too far , I need to properly undo it. Not the best pics but I was able to slide the phone up into the gap. Seems a lot of moisture up there
If your carpet is wet or you have anything damp in the cabin, water will condense where its cold, it might not be actually coming in there.

Have you looked under the carpets? I suspect you'll find they're wet, or the boot is..

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Portisz4
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2016 z4 condensation

Post by Portisz4 » Thu Jan 26, 2023 8:57 pm

Ok so earlier in the evening today I looked in the boot. The inner boot lid around the painted area is soaked in condensation and there is an inch of water in the boot under the battery.

Where on earth did this come from? I've spent an hour drying every and taken out everything that's wet including hydraulic foams.

Can this transfer to the cabin too?

This looks like a nightmare to solve

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Jey
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2016 z4 condensation

Post by Jey » Thu Jan 26, 2023 10:22 pm

Nah, easy fix. Loads of information on here to sort it out. Did mine a few weeks ago and not a drop since, and no condensation anymore. I refitted the boot seal using fresh sealant, re sealed the corner seals as they’d lifted and the sealant perished, and finally the light cluster seals which were badly fitted. I fitted new ones as I’d bought them. Just followed the advice on here
E89 - s23i 2010 Saphire Black
18 inch alloys for comfort - Idrive, cruise, and lots of smiles per mile... :D

clarker63
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2016 z4 condensation

Post by clarker63 » Fri Jan 27, 2023 5:57 am

Portisz4 wrote: Thu Jan 26, 2023 8:57 pm Can this transfer to the cabin too
yes.. the vapour will get into the cabin too. As said, mostly its the rear light seals (usually this is obvious when you undo them) or top hoot seal. I took out the trim and dried it all out to see where mine was coming from and to ensure the fix worked before putting it back. Annoying and time consuming but not complex.

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Portisz4
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2016 z4 condensation

Post by Portisz4 » Fri Jan 27, 2023 2:16 pm

Jey wrote: Thu Jan 26, 2023 10:22 pm Nah, easy fix. Loads of information on here to sort it out. Did mine a few weeks ago and not a drop since, and no condensation anymore. I refitted the boot seal using fresh sealant, re sealed the corner seals as they’d lifted and the sealant perished, and finally the light cluster seals which were badly fitted. I fitted new ones as I’d bought them. Just followed the advice on here
What sealant did you use?

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Portisz4
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2016 z4 condensation

Post by Portisz4 » Fri Jan 27, 2023 5:28 pm

I cant see when it is coming In. I have the hose on it the watering can.

This corner is soaked too ..is it these seals?

Nothing seams to be coming in through the lights
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clarker63
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2016 z4 condensation

Post by clarker63 » Fri Jan 27, 2023 5:37 pm

the water under that seal is usually the indication its coming in there. undo the torque bolts on the top of picture and you'll probably find the sealant under is perished. I took the whole thing off, and re-sealed it. that solved it for me. as well as filling up the battery well, it goes into the chassis which took me a while to get rid of too.. let me find the thread I posted it in.

viewtopic.php?t=115469&hilit=leak

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Portisz4
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2016 z4 condensation

Post by Portisz4 » Fri Jan 27, 2023 5:44 pm

You mean under here
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clarker63
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2016 z4 condensation

Post by clarker63 » Fri Jan 27, 2023 5:45 pm

yeah! thats the one. take the whole lot off and reseal it. I have a sealant that stays pliable, rather than the stuff BMW use that turns to dust. :thumbsup:

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Portisz4
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2016 z4 condensation

Post by Portisz4 » Fri Jan 27, 2023 5:51 pm

Looks dreadful under there
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clarker63
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2016 z4 condensation

Post by clarker63 » Fri Jan 27, 2023 5:56 pm

certainly worth doing.. rules one thing out. Make sure you dry it all out first so new ingress is easy to find (noting my point about the chassis storing water and it popping out when cornering, I even took a video..

https://drive.google.com/file/d/12Zgkgy ... yIPb3/view

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Jey
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2016 z4 condensation

Post by Jey » Fri Jan 27, 2023 11:03 pm

Portisz4 wrote: Fri Jan 27, 2023 2:16 pm
Jey wrote: Thu Jan 26, 2023 10:22 pm Nah, easy fix. Loads of information on here to sort it out. Did mine a few weeks ago and not a drop since, and no condensation anymore. I refitted the boot seal using fresh sealant, re sealed the corner seals as they’d lifted and the sealant perished, and finally the light cluster seals which were badly fitted. I fitted new ones as I’d bought them. Just followed the advice on here
What sealant did you use?
Search stixall on Amazon
E89 - s23i 2010 Saphire Black
18 inch alloys for comfort - Idrive, cruise, and lots of smiles per mile... :D

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RobbiZ4
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2016 z4 condensation

Post by RobbiZ4 » Sat Jan 28, 2023 8:24 am

Portisz4 wrote: Fri Jan 27, 2023 5:28 pm I cant see when it is coming In. I have the hose on it the watering can.

Nothing seams to be coming in through the lights
Did you check the clusters correctly according #3 in the following thread (drill hole no. 3, seal pulling to the inside)? It's important to remove all interior trims of the trunk, to get a free view down to the bottom. And then you have to ckeck the two vents on the left and on the right as 2nd step.

⌛E89: Retractable Hardtop (roof) Maintenance (and additional) tasks
viewtopic.php?t=130932
Pardon, je suis Allemand :oops:
:ant:
E89 Roof Maintenance
viewtopic.php?t=130932

Y3 Roof Diagnostic System
viewtopic.php?f=23&t=129048
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Portisz4
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2016 z4 condensation

Post by Portisz4 » Mon Jan 30, 2023 3:14 pm

I have glued the long seal across the back . Cleaned everything. Had the left light out, couldn't really see much a miss.
But alarming, this morning when I got to work, I looked in the boot and the left hand storage well , still all exposed as not refitted plastic trims ,was full of water again.
I am sure it didn't rain last night. This is weird. And if it did, surely a little light rain hadn't got in.

Was filling something or a hole with the hose pipe yesterday and it's working its way in when driving?

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Jey
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2016 z4 condensation

Post by Jey » Mon Jan 30, 2023 3:41 pm

If you read the posts right the way through you will see that the chassis members may be holding water from previous leaks and this will make its way back to the boot. suggest you dry this out as much as you can and leave towels in to collect any additional water that appears when you drive. once the bulk of the water is cleared, use paper towels to monitor progress. Took a couple of days to clear mine. Then you can check for fresh leaks..
E89 - s23i 2010 Saphire Black
18 inch alloys for comfort - Idrive, cruise, and lots of smiles per mile... :D

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