2008 R350 rear squirter leaks

It pours fluid inside the trim, which drips down inside the back window. When I pulled it a part, there is evidence of bent clips and missing screws, so someone tried to fix it before.
I was able to remove and re-install the black fitting, but it still leaks. Is it missing an O-ring?
I have a 2008 R as well, with this issue - but haven't taken the time to open everything up. Picture = 1000 words, right? Anyway, looking at this it looks like a single piece injection molding. I strongly suspect it is leaking from the hose connection. First thing I would try is a small zip tie.
And you would probably need the missing clip to hold it firm against the tailgate metal or trim where it attaches.
Might be best to get a new nozzle (It could be blocked, and may well come with the missing bits).
Here is a post with images about similar issue with an ML:
http://www.benzworld.org/forums/w163...d-leaking.html
See here, issue on an ML-Class has images:
http://www.benzworld.org/forums/w163...d-leaking.html
Thanks for posting image, I have this issue too!
I don't think it is leaking at the hose fitting, but I'll double check. Couldn't hold the squirt lever and see the fitting at the same time. : )
I think it is leaking around the piece shown, which inserts to a socket. It does click in to place, but it looks to me like it needs an O-ring.
Was also wondering if it was partially clogged. It sprays both sides of the window about evenly, inside and outside, so not a full clog.
Ended up ordering the nozzle. If it is not the right part, at least I can use it to see how the pictured part seats, and if needed, glue it in there with silicone.
Appears to be a complete replacement for the snap-in squirter nozzle.


Going to be tough getting the old one out, it appears to be a snap in, but there is no access to the backside except though a smallish hole.
But got it out and got the new one in. Put on a cable tie just to be paranoid too.
No leaks so far, so buttoned back up the trim.




