E-Class (W211) 2003-2009

Panoramic roof leak

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Old Mar 8, 2026 | 01:53 AM
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04 E55
Panoramic roof leak

Can I get your opinions on what's causing this leak. This is on the right back side. I'm pouring water on the back right panoramic roof so it's goes into the sunroof rear channel above the rear window.

Video attached.
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Old Mar 10, 2026 | 10:45 PM
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From: Merkville the galaxy of Stars
'99 CLK/05 E500 WAG
Originally Posted by ggh4
Can I get your opinions on what's causing this leak. This is on the right back side. I'm pouring water on the back right panoramic roof so it's goes into the sunroof rear channel above the rear window.

Video attached.
I dont have pano roof, but odds on your drains may be clogged. I would recommend a can air, stovepipe cleaners, and edge trimmer cord.
Also check your drains for debris under the hood located on the side corners, if dirty snake the as to the roof drains....
PS: Check your drain in the gas area to as dirty/grime likes to party their too. GL.
R,
2Merks

Last edited by 2MERKS; Mar 10, 2026 at 10:47 PM.
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Old Apr 12, 2026 | 07:14 PM
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04 E55
Here's the fix for my issue.

First there are no rear roof drains.

My issue was the glue had failed on the rear window, you can see two failure spots in the picturea where it had detached from the window. I was told you can test this by pushing on the window. If it moves in and out you're glue is going bad. It shouldn't move at all.

Here's pictures of the rear window removed. At least for my model and year , 2004 w211 e55 woth panoramic roof, manufactured date of 09/03. There are no rear roof drains.




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