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Discussion Starter #1
Hi folks


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 :laugh:) 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


Mark
 

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Discussion Starter #4
Hi Jeff and thank you for helping me - really appreciate it.


I did use that link you provided for a parts search and couldn't see those side trim pieces listed separately - will have another look around this evening.


In the meantime, the VIN number is WDD1724482F079438


I also spent some time looking through those other links you kindly provided but so far didn't turn up a similar problem. I will keep digging and see what I can find.


My plan today was to have a go at dropping the headliner to get a better look at the underside of the roof but the weather here has been ghastly all day. Hopefully better weather tomorrow :laugh:


Thanks again for trying to help me.


Cheers, Mark
 

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Standby for datacard and then will look for part
 

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Datacard here:
 

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i'll keep looking

 

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if you do not see the part, it is not sold separately
 

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Discussion Starter #9
Thanks for looking Jeff - that was the exact same place I would have expected to find it - shame it is not available separately.


I am in two minds now whether to try and remove the trim in case I break it. The trouble is that I cannot see that I will be able to achieve a satisfactory seal if I am not able to get the underside cleaned up properly.


Hmm....
 

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Purely a guess on my part is that, if that side trim is not available separately, then it is most likely bonded to the roof section at the factory.
If that is the case, I think that a good clean as far as is practicable and then stick it back with Tigerseal or Sikaflex would be the most likely cure. Just make sure everything is dry and mask off the surrounding parts well. Stick it down and tape in place for 24hrs.
 

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Purely a guess on my part is that, if that side trim is not available separately, then it is most likely bonded to the roof section at the factory.
If that is the case, I think that a good clean as far as is practicable and then stick it back with Tigerseal or Sikaflex would be the most likely cure. Just make sure everything is dry and mask off the surrounding parts well. Stick it down and tape in place for 24hrs.
Thanks for the suggestion Windin - appreciate it.


It is odd because when I was looking at the car yesterday and discovered that trim piece was coming loose, when I gently pulled it back, a lot of water came running out. I held the trim back till water stopped coming out. Today, we have had torrential rain all day but when I went and sat in the car 30 minutes ago, there is no sign of any water drips at all. It is almost as if that trim piece being slightly unstuck was trapping water and funnelling it in somehow. Since I pulled the trim back, it is not sitting quite as snug as it was so perhaps this is allowing the water to drain away rather than be trapped and funnelled?


Anyway, after todays findings, your suggestion was exactly what was on my mind - do my best to clean up what I can and then Sikoflex it back in place.


Thanks for the help mate :smile:


Cheers


Mark
 

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From the pics am I correct in thinking that it is the last 3 to 4 inches of the top edge of the trim is coming away and that the bottom edge is still attached and secure.. If so I would make sure that the area coming away is completely clean and dry and as suggested use something like tigerseal to stick it back down. Essential to let adhesive cure for at least 24 hours and over that period tape it down so it cannot move and best not to drive the car.
 

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Discussion Starter #16
Thanks Martin - it is useful to have further confirmation that what I am planning is not a bad idea!
 

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Hi Mark, not sure if you have this fixed yet but happy to share my recent experience. I also have a water leak from the head lining in my pano glass roof, only recently got the car from Mercedes Brooklands and they are fixing it in a few weeks. They confirmed that the side covers are bonded to the roof panel and not possible to remove them. Mine are not as loose as yours but I can hear them flex with very little pressure and also water comes out in the same way yours does. They propose to re-bond the roof top panel (Glass, base, side covers etc) and also replace to side seals directly above the door glass.


Hope you have managed to fix yours? Water coming out the top of the roof is not a nice experience!
 

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Hi David and thank you for your input - and sorry that you are experiencing a similar problem. Your message was actually very timely because I suddenly thought yesterday that I ought to update the thread and let folk know where I am up to.


My sister wanted her car back when she returned from holiday and the weather was pretty awful on the odd occasion when I was able to have it back here since then. And now the fine weather has arrived, I am absolutely crazy busy with work. So, it short, I have done nothing more.


This has actually been a good thing because despite the awful weather we had, the car hasn't leaked a drop since I slightly pulled the trim piece back which hopefully proves my theory that water was being held behind the trim and then finding it's way into the car - typically when driving.


My work will ease off in the next week or so when I will hopefully have a chance to re-bond the trim but I am still not sure how I am going to manage to get the underside cleaned up enough for the sealant to be able to grip properly without taking the whole thing off.


On your car, can you see a tiny hairline crack where the side trims fit up against the glass roof? On this car, there is a tiny crack the whole way along on the passenger side though happily, the drivers side is fine.



Anyway, I would be very interested to see how your dealer intends to deal with the trim pieces. Are they going to remove them to re-bond them? If they are, how do they go about removing them? I would really appreciate it if you could ask them when you take yours in.


Do keep us up to date with how you get along - hopefully they sort it to your satisfaction.


Cheers, Mark
 

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Hi Mark


Yes, mine is leaking from the same place, brake slightly harder than normal or turn hard enough then the water pours out of the headliner!


Not sure where it is really coming from as the construction of it is a bit of a mystery as far as i can see. There are a couple of threads on here that might be useful to you, one where someone has managed to replace the glass section and re painted the side panels but does not say if they were removed. Will try to find and post a link to that entry.


On my car i can see a very small gap on both sides where the glass meets the side panels, if i gently press the side panel then they flex a bit, make a not very nice noise and the gap increases very slightly. The drivers side is worse if anything but so far has been dry.



The dealership are going to do the following in a few weeks:
Remove the entire roof assembly from the car
Strip the roof down
Inject some sort of sealing/bonding agent into one side of the roof at an exact temperature and then wait for 24 hours to set and then repeat for the other 3 sides.
Fit new seals above the window, then rebuild and replace back on car.


I will ask what happens with the side panels.



If there is one person on the site to ask it might be this one:
https://www.slkworld.com/slk-r172-class-diy/549108-r172-vario-top-panel-removal-installation.html
This person had the side panels replaced so would know if they come off.





Seen some other links which i have saved on my desktop which may help you, will check those tomorrow.

Hope some of the above helps! Dave
 
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