 | Home > General & Technical (L663) > Drain holes for sliding panoramic sunroof |
 
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| MisterZ Member Since: 12 Mar 2025 Location: Meerbusch Posts: 14  
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Looks like the rear and front drain hoses are connected to the front New Defender 110 D200 S | Freelander 2 SD4 Metropolis
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12th Sep 2025 3:36pm |
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| MisterZ Member Since: 12 Mar 2025 Location: Meerbusch Posts: 14
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 Click image to enlarge New Defender 110 D200 S | Freelander 2 SD4 Metropolis |
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12th Sep 2025 3:36pm |
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| Keith_L Member Since: 01 Sep 2025 Location: Worcestershire Posts: 21 
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Thank you. That rather suggests the water should be running down inside the A pillar in a drain tube, not down the outside, which means.... 2023 Defender D300 HSE in Pangea Green
2002 Discovery 2 Td5 Auto in Zambize Silver 2010 Freelander 2 Td4 HSE in Bali Blue (sold but we should have kept it) |
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12th Sep 2025 3:54pm |
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| MisterZ Member Since: 12 Mar 2025 Location: Meerbusch Posts: 14
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... choose the next car without a sliding roof
 less problems New Defender 110 D200 S | Freelander 2 SD4 Metropolis |
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12th Sep 2025 4:56pm |
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| Huwcil Member Since: 08 Oct 2025 Location: Ceredigion, Wales Posts: 23
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Bit late answering this topic but I removed the trim on one side of the panoramic opening rood a few weeks ago with a view to installing a couple of stainless steel 10mm pipe inserts, just as I had done to my L405 RR a few months ago. They have a different design of tray, made of plastic rather than steel for the Defender. It has drains at all four corners I think and it is all plastic rather than with centrally placed steel drains. Even so, like the L405, I suspect that some water will drain down the grooves as seen in the OP if it pours down with rain and the vehicle is parked at a suitable angle.
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14th Oct 2025 10:28pm |
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| haymeister Member Since: 24 May 2021 Location: Saitama Posts: 294 
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For what its worth I have the sliding pan roof and no leaking (or any other) issues in the past 4 years.
My previous car, from Munich, started playing up after 3 years... had to be reset every month, then the blind got warped, jammed, then had to be replaced. 22MY Defender 110 D300 S in Pangea Green and Contrast White Roof IG defender_japan "Hulk san" |
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15th Oct 2025 2:49am |
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| Keith_L Member Since: 01 Sep 2025 Location: Worcestershire Posts: 21
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At the weekend I took off the plastic trims that run along the outside of the sunroof (carefully, from the front) to see better what was going on. It gives you a clear view of the 4 drain holes (2 front, 2 back) and makes it easy to clean the channels out. The drain holes seem very small (about 3-4 mm I suspect) so no wonder they block up. Then, with my trusty observer and a large syringe to control where the water went, I tested everything. The rear drain holes were both clear and seem to drain out down the rear pillar with no obvious exit point - it splashes out under the rear bumper. The Discovery 2 was the same with the drain pipe finishing about chest height with the water then finding its own way out. Similarly with the front, it seems to run down the 'A' pillar and splashes out the bottom, again with no obvious exit point. If you put the water in too quick then it overflows down the grooves between the panels, as @Huwcil says, and ends up anywhere and everywhere.
I'm certainly going make a note for myself to check the drain holes every year. Thanks to everyone for their input. 2023 Defender D300 HSE in Pangea Green 2002 Discovery 2 Td5 Auto in Zambize Silver 2010 Freelander 2 Td4 HSE in Bali Blue (sold but we should have kept it) |
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15th Oct 2025 10:13am |
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