How is it getting wet ?

 

I guess water from the windscreen flows over the top plastic, over this tray and then out on the sides.
This is the bottom plastic on the picture, the one with white clips that the brake fluid reservoir is attached to.

 

Rising Damp?
You might find you have a garden pond going on beneath all that plastic because the scuttle drains are blocked.

 

No. Scuttle drains are way below.

According to renault docs this "tray" is called "Scoop under the scuttle panel grille".
Outlined in bold:

After some digging on the internet, seems to be a known scenic 3 problem. Water from windscreen goes on that scoop which redirects the flow left and right towards the drains.
You have to remove that grille if doing basically any maintenance on the engine.
Google search by the part number gives only sites in russian :-(
This guy has done something similar, you can see the location of the scoop on the first picture:

https://www.drive2.ru/l/499517479421214922/

 

Have you yourself checked scuttles are clean, ..

Not has this one come up before to my knowledge on here..
But had lots of scuttle drains blocked, water can not get out, and driving around starts a capillary action, ...

 

Have you yourself checked scuttles are clean, ..



Not has this one come up before to my knowledge on here..

But had lots of scuttle drains blocked, water can not get out, and driving around starts a capillary action, ...

The cloth thing can get wet if the rubber strip isn’t sealing tight to the windscreen Stu. Remember how I showed you I’ve modded mine so it sits tight onto the screen?
To be honest in his picture the hole in the top plate looks blocked anyway so water won’t get to his anyway.

 

Scuttle drains start from the corner plates under the wipers and eventually exit underneath. It’s important to keep them clean from top to bottom buddy, make sure the small drain holes in the corner plates are always clear.
Regarding the cloth, you need to ensure the rubber strip is tight onto your screen to prevent water getting under. A light smear of thick grease under it helps it seal to the screen better.

 

The felt panel is called the Scuttle Panel Cover, Renault part number 668100006R.

Cost around £150 from dealer or less than half from a Renault specialist breakers. I just replaced mine.

The scuttle doesn't push tight to the windscreen and is a known issue. Water will ingress and soak the felt. I used black electrical insulation tape over the scuttle/window. Need to redo every so often.

My cover panel was broken by a friend cutting corners when replacing the air filter, instead of taking off both nuts and removing properly, he undid one nut and did a bodge job.

 

Hi, there are two design problems here:
1. the felt scuttle panel cover. Its purpose is sound insulation. But has to deal with heat from the turbo...and also water from the windscreen. The constant soaking then drying out causes the felt to deform, degrade and disintegrate.
2. the seal on the windscreen. The white clips on the reverse do nothing. So where the seal stretches over the side panels, water enters. The felt then gets wet. As explained above, the seal can be improved using grease, tape or silicon.
This clip shows how to build a panel from scratch.

Here’s what I did:

1. First, I separated original scuttle panel cover from the plastic frame. This was easy. You can practically tear it off. You can see how badly damaged it was....as well as my futile attempt to staple it. I also removed the thick rubber seal which is attached by staples.

2. Here is the 1.5 mm Aluminium sheet I used to replace it . I would recommend 1 or 1.2 mm as you can cut this with scissors (much easier).
3. The first step was to cut out the shape of the panel. I used the original as a template. I would recommend extending the width of the front part of the panel so it overlaps the join to prevent leaks. I would also recommend shaping the panel a little to match the curves of where it will sit.

4. Next I attached the sheet to the plastic frame using nuts, washers and bolts. A good thing to do here would be to seal the gap between the panel and frame with silicone or similar.

5. Next I glued the thick rubber seal onto it using contact adhesive solvent

6. I covered the underside of the new panel with heat shield tape:

7. Then I put it back and tightened all the bolts. I was careful to ensure the thick rubber seal sat tightly against the rear wall of where it sits. I also ensured it was correctly located between each of the four metal clips which hold it there.

As a noise insulator it works well. I didn't need add bitumen or anything. It seems to not heat up.

There were some leaks over the sides. So I extended the new panel so it covers the gaps at the sides and allows water to drain into the scuttles. As I mentioned, by making the panel wider at the front I could have avoided this altogether.

Another modification is to extend the drainage channel directly under the windscreen so water pours directly into the scuttles..another design flaw in my view.

So far it’s working well. I will update if I run into any probs...hopefully this helps.

Thanks for reading,

James

 

Hi, there are two design problems here:
1. the felt scuttle panel cover. Its purpose is sound insulation. But has to deal with heat from the turbo...and also water from the windscreen. The constant soaking then drying out causes the felt to deform, degrade and disintegrate.
2. the seal on the windscreen. The white clips on the reverse do nothing. So where the seal stretches over the side panels, water enters. The felt then gets wet. As explained above, the seal can be improved using grease, tape or silicon.
This clip shows how to build a panel from scratch.

Here’s what I did:

1. First, I separated original scuttle panel cover from the plastic frame. This was easy. You can practically tear it off. You can see how badly damaged it was....as well as my futile attempt to staple it. I also removed the thick rubber seal which is attached by staples.
View attachment 193753 View attachment 193756

2. Here is the 1.5 mm Aluminium sheet I used to replace it . I would recommend 1 or 1.2 mm as you can cut this with scissors (much easier).
3. The first step was to cut out the shape of the panel. I used the original as a template. I would recommend extending the width of the front part of the panel so it overlaps the join to prevent leaks. I would also recommend shaping the panel a little to match the curves of where it will sit.

View attachment 193755

4. Next I attached the sheet to the plastic frame using nuts, washers and bolts. A good thing to do here would be to seal the gap between the panel and frame with silicone or similar. View attachment 193758

5. Next I glued the thick rubber seal onto it using contact adhesive solvent
View attachment 193759

6. I covered the underside of the new panel with heat shield tape:
View attachment 193761
7. Then I put it back and tightened all the bolts. I was careful to ensure the thick rubber seal sat tightly against the rear wall of where it sits. I also ensured it was correctly located between each of the four metal clips which hold it there.

View attachment 193763

As a noise insulator it works well. I didn't need add bitumen or anything. It seems to not heat up.

There were some leaks over the sides. So I extended the new panel so it covers the gaps at the sides and allows water to drain into the scuttles. As I mentioned, by making the panel wider at the front I could have avoided this altogether.

Another modification is to extend the drainage channel directly under the windscreen so water pours directly into the scuttles..another design flaw in my view.

So far it’s working well. I will update if I run into any probs...hopefully this helps.

Thanks for reading,

James

Any info on the modifications?

The cloth thing sits under the windscreen so i don't know how the rubber strip works.
On top of it is another full plastic shelf, visible on the pictures that sits tight on the windscreen. It has hard plastic edges. I don't see how that could be watertight, there is surely some leaking onto the cloth scoop thing underneath.

Drains are clean, checked them myself from the wheel arches. Easier than removing wipers.

Water is meant to find its way onto that compressed fibre "cloth thing" piece of crap. . The water is then meant to run to both ends and get poured over the windscreen wiper motors under which is the drains. Trouble is water rots it and then falls short of the wiper motor cavities and pours over the engine potentially causing multiple problems to hot things and elecrics of very expensive nature. Thats just one problem then you have the constant blocking of the scuttle drains flooding the interior of the car.

 

I made some temporary solution stapling the ends of the "cloth thing" and waterproofing it with 300°C rated silicone. Smeared silicone with spatula. Not pretty but the felt is not soaking wet after every rain. Both ends above the windscreen wiper motors are in really bad shape and there is some water leaking on the fuse box
Unfortunately it is impossible now to get exact measurements for a DIY aluminum replacement shelf.
I measured temps around 100 °C right above the turbo in summer after DPF regen cycle

 

If you use 1.2mm you can just trim it to size by eye using scissors....

 

I have the same issue, but mine sags above 2 coil packs 3 and 4, I saw some water on top of the engine, checked and both tubes were full of water, plugs really rank, no misfire reported, but some sluggish acceleration, shorting out under load? Taken them out, cleaned and dry, but the sag is right above them, I need to fix it but 300 euros for a new scuttle cover is too much

 

Currently having this issue and have spent silly money with my mechanic thinking it was other things. Took coil pack 3 and 4 out today and they were orange with rust despite being less than 12 months old. Might have to try a DIY fix like the ones suggested here.

 

i have just sealed mine with glazing silicone if i can stop water going under the windscreen rubber im halfway there

i have just sealed mine with glazing silicone if i can stop water going under the windscreen rubber im halfway there

Sealing that thing to the windscreen is definitely half the battle...no idea why they didnt design it to grip the windscreen....