I have been tasked with fixing a water leak from the panoramic roof on my sister's 2013 SLK 200. The water drips down roughly where my finger is pointing in the first pic and drips down right where the seat belt buckle is in the same pic.
One of my own cars is a 1997 BMW E36 M3 Evo convertible so I am well aware of the importance of making sure drain holes are kept clear, cleaning seals and applying Gummi regularly. With this in mind, I have methodically checked all drain holes and lubricated all the seals.
Despite this, the leak has still persisted so yesterday, I spent some time really looking at the area of the leak. I noticed that the trim that that runs down the side of the glass (the same bit I am pointing to in pic 1) is coming unstuck.
You can see from my other pics that it is possible to get your fingers under the inner edge of the trim and pull it up slightly. From the little I can see when I gently pry the trim up, it looks like there may be some plastic tabs to locate the trim piece and then it is bonded in place. It does look like one of the tabs is broken.
I have searched for quite a while and have found threads where dealers have squirted sealant into the roof to fix leaks (as well as the drilling holes thread
) but nothing about this trim piece.
My question is, does it seem likely that if water can get under this trim piece, it can leak into the car or is that trim purely cosmetic? Looking back at the drilling holes thread, it does seem like it is likely that water can get in this way. But - if it is just cosmetic then it is a red herring and the leak is probably seal related.
So, to cover all bases, it would seem a good idea to have a go at re-bonding that trim piece back in place. The only way I can see this can be done properly is to completely remove the trim first to allow all the surfaces to be cleaned up properly. But - looking at the parts catalogue, I don't see that trim listed separately so will be stuck if I break it in taking it off.
Has anyone come across this problem before? Any suggestions for me?
Many thanks and best regards