The sun roof has leaked inside 3 times in the 5 yrs I've owned my 06 S-Type when it's parked in the open under a heavy rain.. I've already learned about the drain tubes that run down the right and left pillars of the windshield and empty out inside the rear of the wheel wells.
I've cleaned them out with a snake of the plastic line of a weed wacker/trimmer with the hatch open pouring some water in the drain pan and going in from the top.. The last time when that failed I opened the rear plastic wheel well and went in from the bottom with success.. I don't have a clue why they get plugged so often and think they should be 1/4" not 1/8"...Ireally don't want to get my headliner soaked many more times so I'm thinking of getting a tube of clear silicone and sealing it all around.. I've been a kitchen re modeler for a number of years and pretty good with a calk gun so I'm not worried about messing up the job.. Before I go ahead I'm posting here for thoughts on maybe a better product for this application or any other advice...thanks for looking.

 

There are 2 tubes in the front "A" pillars and 2 more going down the "C" pillars. Are you cleaning all 4 tubes out? I think you are?
Have you checked to make sure the tubes have not pulled off the drain pan?
Is there any identifiable stuff coming out of the drains like Pine needles? These are a known problem and other than not parking under Pine trees no way to avoid them.

If it's not that then look at how the glass panel fits the metal roof. Does it align or is it lower in some area's?
Some have had to align the glass panel so it seals properly. That seal is suppose to allow water to get into the drain pan. It's not a total seal just something to slow down the water flow as the pan can only handle so much water flow before it starts to overflow itself instead of flowing out the 4 drain tubes at the corners of the drain pan.

Any pictures that might show something?
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Thanks for all that..There is nothing wrong with the way it closes, everything is in line there.. The problem is the fact with how hard it rains in Florida, sometimes you can't see 100yards through it.. All 4 lines are clear but they are much too small to deal with the rush of water that flows around the glass that has no gasket seal of any kind..As much as I love this car I don't know what they were thinking making the tubes so small and the glass with no seal.. Every door has a seal all around.. None the less I'm going to seal it for good because I never open it anyway.

 

If you seal it up, you might want to disconnect the switch to avoid overloading the electrics if someone tries to open it.

 

I plan to putt the F31 fuse in the 2002-2008 curved box in the trunk / boot. Thanks again for your time..

 

As an Oregon resident and quite familiar with rain, let me check my sympathy meter. Hmm, not picking up anything, not even a slight reading.

For sealing off a sunroof, I'd be very hesitant to apply such a permanent solution as silicone. You don't want to be the guy getting cursed by the next owner.

What about some clear UV-resistant tape over the gap? I did a quick search and came up with these two products:

https://www.trextape.com/products/t-...-188-in-x-9-yd

https://www.gorillatough.com/product...-gorilla-tape/

You'd only need a 1/4" or so on either side of the seam, so you'd have to trim it down, but I bet it might work and would allow easy reversal in the future if needed.

 

No, no, no. He needs a nice piece of plywood about an inch larger than the sunroof, a few inch and a half screws, a tube of Sikaflex and some varnish. Cut the board out with a jigsaw so it has pretty rounded edges. Sand it off to make it look professional and to avoid splinters. Run a bead of Sikaflex around the outside edge of the sunroof. Plop the board on top and secure it with the screws. Varnish the board and voila! If anyone asks, it's a Jaguar optional extra, designed to match the wooden dash and steering wheel.

 

Be sure to use countersunk fasteners for a finished appearance.

Now that I think about it, you could install the screws from inside the cabin. Choose the length carefully so they don't poke through the plywood.

Can you get elm burl plywood?

 

Maybe a piece of plexiglass same shape and size of sun roof glued on top for that faux appearance.

 

That's it, now you're getting the idea!

 

Not a bad idea, but if the driver has a bald head he might get sunburn.

 

The aerosol looks tempting:

https://flexsealproducts.com/

 

That leak with those tiny little drain holes in the pan is going to be sealed very neatly forever . What a **** poor design , every drain is open and running when tested it just can't deal with the opening around the glass without some kind of seal and those tiny drains .. I had to put a new headliner in it when I bought it because of precious leaks and I'm not paying $250 for another one.. Thanks for the entertaining Ideas from the peanut gallery,..

 

Of course you know we were just messing with you. You couldn't really use plywood due to durability issues. I think a piece of metal or UV resistant plastic would do the trick. You could paint a woodgrain pattern on it for a factory look.

 

The actual design is from the sunroof assembly manufacturer, which in this case is most likely Webasto; this means that you are going to find a similar design in a Mercedes, a BMW, etc.

I have noticed that the seal that runs along the edge of the glass panel shrinks and cracks over time; perhaps you can look into a way of restoring this piece to make it seal better, effectively creating more "run off" and less water for the internal drains to contend with...

Just a thought anyway.

 

Strange. I haven't got this problem with mine and I live in Scotland where it rains almost every day and the weather is most inhospitable.

 

Yes neither does anyone else. I think he has additional problems that have not been found yet. The shrinking seal suggestion mentioned above is something to look at for sure! As I posted before the moon roof is not sealed in the normal sense. The seal just slows down the water flow so the pan and 4 drain hoses can handle the fluid flow.

The other good suggestion is Wabasto makes the moon roof and does sell parts. Some people have been able to source parts that Jaguar does not service too.
Webasto Tech Help
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It is strange how Jaguar felt the need to install a sunroof on a car with air-conditioning. It serves no useful purpose. It's like having two zips on the fly of your trousers. What would be the point?

 

I think it was not the default but done for those owners who wanted it, probably at extra cost. (Or for a market where owners would expect it.)

My STR has lots of extras but thankfully no sun roof.

 

The S-type sunroof, actually a moon-roof, has a rear tip-up function that allows some hot air to escape the cabin when the car is parked in the sun and the ambient temps are high. Here in Montana in the summer it is handy as this allows more rapid cooling of the cabin when the A/C is activated...