Strange one really, noticed the other day when I reversed at speed a splash of water came from under the glove box and landed on the floor mat. Obviously there was a pool of water sitting somewhere behind the dash and it dislodged on acceleration. Upon further investigation my passenger side carpet is soaking wet (not coolant just rain water).

I have been researching this for hours today and all I can find is "check your sunroof drains" and "check your AC drains". I DO NOT have a sunroof and its too high up to be AC drains. Im going to strip out what I can during the week, A pillar trim, wiper cowling etc etc. Any other tips or ideas would help. The windscreen seals are pretty poor and split both top and bottom but I believe they dont actually provide any waterproofing as such, this is provided by the windscreen bond. Also the carpet is so thick and heavy its hard to manipulate, would it be easier if I removed he seat.?

The water seems to be dangerously close to my fuse box so Id like to get this sorted before I get all manner of electrical .

Thanks.

(driver side is bone dry as is the rear) 2002 TD6 Epsom Green

If indeed your ac drains are blocked it’s possible the water is from the ac evaporator tray overflowing. If it’s not that it definitely sounds like your windscreen leaks somewhere.

Thats something I hadnt thought of, thanks. Not sure where that is located but I will find out. Im hoping its not the screen  2002 TD6 Epsom Green

nicedayforit wrote:

If indeed your ac drains are blocked it’s possible the water is from the ac evaporator tray overflowing. If it’s not that it definitely sounds like your windscreen leaks somewhere.

You don’t need to get to the evaporator, which is a serious job, just concentrate your efforts on clearing the drain pipes and the tray will empty as normal.

Hmmm,

I think thats what i said above wasnt it ?

🤣🤣🤖

Well I had a bit of a poke around today and the AC drains are clear and flow beautifully. I lifted the carpet as best I could and the wetness is confined to passenger footwell only. Next area for investigation is the screen. Hard to see any leaks at the bottom of the screen with all that dash in the way.

Are there any known leak points around the A pillar.?

Did a bit more stripping down this evening. I can see where the water has tracked down the metal dash supports and landed on the back of the glove box. Cant see much more than that at the moment as behind the dash is a very busy place.

The glove box seems to have shielded the fuse box from getting wet. It appears to be dry with no signs water marks. More investigation required.

Well done. Perhaps try some water on the windscreen?

And cover the fuses first! Have you disconnected the battery?

Could it be as simple as a sticky patch as seen on 'LR Time's Discovery' behind the A pillar cover?

Yeah Ive seen that LR time episode and was hoping it would something simple like that. Today I made a rain testing rig. Its on the go there at the moment. Im gonna let it run for half an hour and then investigate.

Well after some extensive testing Ive finally found the source of the leak. Its not what I expected. During my "rain shower" I noticed water dripping off my curtain airbag. I followed this tiny trickle back to the upper corner of the passenger side windscreen.

Click image to enlarge

Click image to enlarge

I would suggest Stixall sealant. I've used it for loads of things from sticking air vents on the exterior of my house, to bonding garage door seals to the ground. It seems to be indestructible from what I can tell.