Hello all.

I'm hoping some of you here would have had some experience with roof/seal leaks on these motors.

I have a 2007 3L V6 alphard which was fine and leak free (have had it in Skye in worse conditions back in September). I went further north last weekend and it was rather rainy as you could imagine. Slept in the van overnight and in the morning it was much damper than usual. I noticed the roof liner where the A pillar is had quite a large damp patch on both the passenger and driver sides.

I drove 3 hours back home with the heater and AC on full, which dried the liner out completely.

Today I went out to use the van after sitting for a week and noticed another damp patch. Seems to be happening on the passenger side only this time, but the driver side is dry this time.

Any ideas would be appreciated. Is this common? Where should I be looking to try fix this? By the looks of my picture, I am not sure if it is coming from inside the pillar, or if it's above the passenger door and running downwards.

Picture attached!

Thanks a lot

EDIT: My alphard is the one with the sunroof and moon roof, but I doubt this is anything to do with the sunroof because it is happening so far from it?

Edited February 5Feb 5 by TheRizzler
Adding useful info Re: sunroof

Damp meters aren’t too expensive, when we had issues with a motorhome body leak it indicated the area where the source was.

2 hours ago, TheRizzler said:

Hello all.

I'm hoping some of you here would have had some experience with roof/seal leaks on these motors.

I have a 2007 3L V6 alphard which was fine and leak free (have had it in Skye in worse conditions back in September). I went further north last weekend and it was rather rainy as you could imagine. Slept in the van overnight and in the morning it was much damper than usual. I noticed the roof liner where the A pillar is had quite a large damp patch on both the passenger and driver sides.

I drove 3 hours back home with the heater and AC on full, which dried the liner out completely.

Today I went out to use the van after sitting for a week and noticed another damp patch. Seems to be happening on the passenger side only this time, but the driver side is dry this time.

Any ideas would be appreciated. Is this common? Where should I be looking to try fix this? By the looks of my picture, I am not sure if it is coming from inside the pillar, or if it's above the passenger door and running downwards.

Picture attached!

Thanks a lot

EDIT: My alphard is the one with the sunroof and moon roof, but I doubt this is anything to do with the sunroof because it is happening so far from it?

Hi Dan,

You need to do some searches on this Forum.

It is not unknown for the drainage tubes from the sun roof gully to block.

How to clear them is covered in the Forum.

I would get a cleaning rod for the moon roof and sun roof front and back drains. They are about £2 in temu and clean them out first.

If they block he water overflows the pans the roofs sit in an can track anywhere

As said by James, the drain holes in the sunroof channels get blocked and the water then overflows,

Temu

Sorry Ali express

Ebay, or Amazon, has something similar.

A bit more expensive, but 'instant' delivery.

clean the sunroof drain hose by air gun, solve the issue

In the two front corners of the front sunroof are plastic tubes, I dropped roof liner enough to disconnect them, then attached a bicycle pump to pressurise the pipe. After a few pumps, the blockage cleared.

The moon roof has two pipes at the far rear, which you won't easily get to, but they also connect via short pipes to the fronts.

Did you manage to sort this out?

I have a 2008 alohard with leaking a frame but I don’t have a sun roof!

I can’t work out where it’s coming from, especially as the leak is sporadic. It doesn’t happen every time it rains etc

Hi

Along with cleaning roof drains I ran some Captain Tolley’s creaking crack cure around the windscreen edges a couple of times. That seemed to sort it.

Good luck

You could also try it along the roof under the rubber roof strips.

Also check the door rubber seals are not damaged especially at the top. If they are repair or replace them