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  #1  
Old 02-13-2024, 03:14 AM
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Exclamation Desperate to solve leak from Sunroof - HELP!

Hi all,


My other half took the car through a car wash after she got bat poo all over it when she drove it and apparently it developed a leak so now the DSP amp in the left hand boot well is toast.

After going to about 10 wreckers the last 2 days and finding either the car didn't have NAV and therefore DSP, or the amp is gone. Every car had the amp removed.

Water is pouring in from above the drain pipe?? What??

But the drain pipe is clear both sides? I've run a cable through both and totally clear. Also water does come out at the tailgate again indicating not blocked.















I reached out to someone who was selling the subwoofer from the premium sound system asking if he had the amp.....he did so $200 later I now have it.

I'm not going to reinstall until I can fix the leaks. So far I've pulled the roof lining and done a leak test. Water is pouring in through the rear section of above the black box that the drain pipe connects into.

Lots of leaves somehow??



The drain pipe is now siliconed and zip tied.



Water is pouring in from above the drain pipe?? What??



But the drain pipe is clear both sides? I've run a cable through both and totally clear.



I am at a complete loss as to what's going on!


I also fixed my leaking tail lights.....




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  #2  
Old 02-13-2024, 07:43 AM
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Ask the wife for food color dye. Add some to water and pour it over the spoiler and gate edge. Colored water will help trace the leak into the corner well. The roof drain hose could be cracked too. Especially if it was kinked.
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Old 02-13-2024, 08:01 AM
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Could even be that the drain hose is pulled off the top drain connection ??
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Old 02-13-2024, 08:47 AM
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Or instead of pulled off the upper connection it could have split in in letting some water in and some thru...

Sent from Embassy network using Tapatalk
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Old 02-13-2024, 10:40 AM
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Thanks for the replies all.

It's not coming from the hose, I pulled the hose off both sides and re seated. It's coming from ABOVE the hose connection point? I can see the water coming in with the roof liner trim partially unclipped.

It's bizarre, like the water is just overflowing at the top of the channel?

I'm parked on a hill front facing uphill while testing.

Cheers
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Old 02-13-2024, 11:32 AM
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Did you clear the front drain hoses too? Is the cassette clean (no large leaves clogging it)? The rear hoses are pretty small and simple they're pretty much like a drinking straw. When I removed my cassette the entire area of the rear drain hose was filled with leaves and debris. No way that was draining.

I had water leaking in the front glove box that I fixed by running wire through the long drain hose in the front. If the hose is clear and properly attached I don't know why you're still having leaks. Are you sure the cassette and everything is unclogged .. I don't know.

I can see a leaf up there in the picture. It's probably like mine was. It was like an Autumn festival in the rear corners of that sunroof cassette. I had cleaned the interior really nice in days prior, drop the cassette and got leaves everywhere, had to do it again.
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Old 02-13-2024, 01:17 PM
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How do I get to the corners of the sunroof cassette?

The front drains perfectly. Water does flow out of the rear at the top of the tailgate and the plumbing snake goes all the way through but yes there were leaves in the roof lining when I removed it, probably around a dozen or so

Sounds like I have to remove the glass etc yes? I have no idea how to do that!

Thanks for your help.

Last edited by Homerlovesbeer; 02-13-2024 at 01:22 PM.
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Old 02-13-2024, 07:46 PM
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Have you tried blowing compressed air backwards into that hose. If there's debris sitting right in front of it, which I'm pretty sure there is, given the leaves in your pictures looking just like mine, maybe that would be enough to knock it out of the way. I used the garden hose jet, compressed air at like 60 psi, and weed wacker wire to clear all four drains. I had a bunch of leaves in the headliner just like that and the cassette was full of them especially in the back corners.

If you put water into the cassette, if there's enough leaves there it won't make it to the hose (which itself could be clear), the water will deflect around it and over it and spill on your headliner.

If you know yours works you could crank it open a bit to see what it looks like. But if you don't know don't touch it. You can remove the glass but you're entering a world of pain.. I would try to do everything I could to mess with that hose and clean the area in front of it before unbolting anything further. Like vacuum leaf blower air compressor hose anything.

There's just four screws on the inside you can see. Then it slides up and backwards to remove. You don't even have to tilt it up. I'm pretty sure you can remove the rear glass with the front glass still installed but I myself have had the front glass off first both times.
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Last edited by Factory6speed; 02-13-2024 at 07:54 PM.
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  #9  
Old 02-14-2024, 12:52 AM
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The front drains well with a cup of water does not mean it can handle
torrential rain.

When kinked, it can allow small amount of water to come through but
Won't be able to handle large amount of water.

I wrote a DIY for the kinked hoses some years ago...


https://xoutpost.com/bmw-sav-forums/...-kink-fix.html
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  #10  
Old 02-14-2024, 12:54 AM
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Thanks.

The flooding is occurring when only pouring water down the back drain holes. To make sure I park uphill so no water goes to the front.

Cheers :-)
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