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Discussion Starter #1 (Edited)
Bought a 406 -04 estate not long ago. Happened to come across a very heavy rain the very next day. The day after that I noticed that my rear footwells were filled with water. (Probably the same reason why the undersides of the rear seats were rusty).

Talked to previous owner who then mentioned that he had had problems with water coming through the rear doors. I then saw that he had tried to seal the inner panel to the door with silicone. What I saw mostly as an attempt to fix the symptom and not the cause.

I dismantled the interior panel and tried to pour water on the window and saw that it ran straight into the inside of the inner panel. This will then have the consequence that it flows out between the inner panel and door, and can then run into the car. I may think it is a little peculiar construction, but I probably know what to fix anyway. I want the water to stay inside the door so it can run out from the drain holes.

This is my fix:

Part 1 explains the removal of the inner panel.
Part 2 contains the actual fix.

Required for engagement:
Approximately 1-2 hours
Flat screwdriver (or something similar)
T20 Torx
10mm ratchet
Age-resistant plastic

Part 1:

Gently just remove the trim around the door handle using a flat screwdriver.
1 01.jpg

Gently pull up the button for the power window.
1 02.jpg

(If you have manually powered windows the window handle somehow have to be removed. Usually there is a pin between the handle and the inner panel that should be drawn out. And then the handle can be drawn of the splines it is mounted on).

It is these metal things that has to be pressed in to undo the button.
1 03.jpg

Remove the contact by pressing on this “lever”.
1 04.jpg

Simply remove this plug to access the first T20 screw.
1 05.jpg
1 06.jpg

The second T20 is located underneath the door handle.
1 07.jpg

Pull the inner panel out from the bottom first.
1 08.jpg

Then lift the top.
1 09.jpg

Remove the cable to the door lamp and the panel can be removed.
1 10.jpg
1 11.jpg

Pull out the cable ties.
1 12.jpg

Remove the inner plastic.
1 13.jpg

Lift and remove the inner window trim.
1 14.jpg

Part 2:

First we need to notice this castor. This we must take into account later.
2 01.jpg

A proper sized plastic is taped up. (I have used a building plastic who is age resistant).
2 02.jpg

Trim down the platstic.
(Don´t have to be any exact dimension, just see to that it covers all the holes in the door).
Cut out a piece of plastic on the top (approx. 60-70mm from top of door) to get past the castor to the power window (shown earlier).
2 03.jpg

(The plastic don´t have to be as far out to the right as this I experienced later when mounting the plastic. It should be enough to cover the hole).
2 04.jpg

I unscrewed this 10mm bolt to place the plastic behind it.
2 05.jpg
2 06.jpg

Then just place the plastic between the inner plate and the window rail.
2 07.jpg
2 08.jpg

A notch has to be cut out to clear the wire to the window.
2 09.jpg

Now no water will hit the motor to the power window :)
2 10.jpg

The top can advantageously stand out further than this.
2 11.jpg

Lock plastic by squeezing down the window trim.
2 12.jpg
2 13.jpg

Put back the 10mm bolt
2 06.jpg

Done :thumb:

4 Posts

Could you please email the pictures of the "fix" to my adress [email protected] if you still have them. Have a major leak myself on both rear doors. The water gathers underneath the door at centre and flows into the car making a big pool of water on the floor.
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