Water ingress door Passat 3B

Hello forum,

My Passat is slowly transforming from a damp environment into an aquarium.

Water is collecting on the driver's side, both in the front and rear areas, above the seal, and then leaking into the interior. It then accumulates in the lower left corner of the footwell.

I haven't been able to trigger it yet, even with the watering can, whether by pouring water on the roof, the hood, or the window seal. The door mechanisms are free.

Could it be that the plastic seals at the bottom of the doors, which the Passat 3B has unlike the Golf and others, are so tight that water can't escape from the bottom and instead enters the interior? Or is there also the problem of poorly designed door seals here, as mentioned in a technical article? Documentation for the Golf IV/Leon/Octavia?

Best regards!

Hello,

Check if the carrier panel inside the door (the metal panel where the window mechanisms, etc. are mounted) is properly positioned. Otherwise, water might run along it and leak out from the bottom. There's a rubber seal attached to it that usually sticks to the door frame a little bit.

Bye.
peace

"I'll definitely do that sometime, when I have more time and the weather is better. However, I don't think I'll find anything there, since everything is still in its original condition. That means I've never removed the fairing, so I haven't even touched the engine mounting bracket. I have, however, already worked on things in the rear. I'm still puzzled by that rubber seal of the 3B(G) down there. Where is the water supposed to come out?" There are only three tiny columns per page.

It will fit in exactly the place that pax described.

It doesn't matter whether the seals have been removed before or are still factory-installed.

A seal made of a type of foam/rubber mixture is applied to the base, which is like a baking sheet. When it's new, it sticks well, but after a few years, it becomes porous and leaky.

You can either buy new aggregate carriers (€€) or use black VW sealant cord (part number...). AKD49701004R10) and remove any remnants of the old seal beforehand.

I came across an instruction manual from Seat; you could try searching for "SEAT BULLETIN 086/SE/TC" on Google.

Thank you very much. I will get the sealing cord and let you know how it goes...

Quote:

I haven't been able to trigger it yet using the watering can, neither by pouring water on the roof, the hood, or the window seal. The mechanisms in the doors are free.

It also depends on whether the vehicle is perfectly upright or tilted to one side, for example. If the position is unfavorable, it may happen that no water reaches the aggregate carrier (baking sheet) at all, and consequently, nothing flows into the car.

However, before anyone attempts potentially pointless repairs, I would try to locate the source of the water ingress. To do this, I would use a garden hose to spray directly into the door from the outside (be careful around the speaker). I would also slightly move or lift the drainage channel and direct the water directly onto a baking sheet. If it's leaking, then water will come out.

It's great that the word "Kuchenblech" is now part of the official forum vocabulary .

Bye.
peace

Use a permanently elastic sealant, and you'll be fine.

In my case, I opted for the "Petec Matic SD".

Hey guys,

Okay, I've heard what you all said. Actually, the pastry crust was leaky or porous. A look at the photo clarifies that. It is, incidentally, representative of all 4 doors.

To seal it, I used body adhesive from the hardware store. Instead of removing the baking sheet, I only lifted it from the bottom, slid a cloth underneath to dry/verschandeln it, and then applied a generous amount of adhesive underneath. After screwing it back in place, I also applied an additional bead of sealant between the baking sheet and the door. If this stuff sticks to metal as well as it sticks to your fingers, then things are going to stay dry in the car from now on.

For the next year or two, this should be sufficient. After that, I'd start thinking about something newer.

Thank you very much for your help!!

I've already done the whole job on a Leon 1M.

But with the original VW butyl sealing cord.

The worst part was initially scraping off the remnants of the old foam sealant.

m;

Hello,

According to Murphy's Law, the next thing that's going to break is either a door lock or a window mechanism. Then it starts all over again .

Bye.
peace

That's exactly why one of my microswitches keeps breaking... because I don't want to force open the newly sealed doors.

Quote:

According to Murphy's Law, next, a door lock or a window lifter will break. Then it starts all over again

.

Okay, here's the translation:

"Exactly!" "He who paints the devil on the wall saves himself the cost of wallpaper, doesn't he?"

After numerous periods of precipitation (in the form of rain), it has remained completely dry so far. The door locks and window mechanisms are still in good condition. I only have water left in the car – and quite a lot of it. Every morning, the windshield fogs up (from the inside), and I have to wipe it down at least three times and wring out the cloth until the water is gone.

On the one hand, as someone who parks their car in the sun, I can't simply lower all four windows throughout the day without consequences. On the other hand, removing the carpet is also too much for me. Are there any relevant experiences regarding desiccants or similar products?

Hi!

I have just been trying very hard to understand the explanation of the source of the error. I haven't really succeeded.

This 'baking sheet'? Could it be that this isn't installed in every (older) car?

In my Alhambra (built in 2002) and all my previous vehicles, there is a layer of foam or a simple film behind the door panels. If you remove that part, you can see directly into the inside of the door.


Regards,
t.klebi

This is a relatively new feature (the Golf IV, for example, always had it), and it's called the "engine carrier" or "power unit support." Besides the motor for the electric windows, the speaker, the control unit, and the control panels are connected to it.

Hello,

Regarding drying: In my old Golf, water occasionally leaked in through the sunroof and accumulated in the rear right corner. I then loosened the carpet and the underlayment a bit and wedged a wooden strip underneath, so that air could circulate from above and below.
I wiped up the really big puddles beforehand with a cloth.

Bye.
peace