Water leaking into footwell of a BMW N62 - Solved

[@TheFelix928]

Do you any good advice on what to do if the water runs through the clean channel into the footwell? I have cleaned my and any water I fill in on top ends up in the footwell.

[@KhanNakash]

I did this the other day but realised there is another leak on the E66 When you sit inside the driver or front passenger seat there is a plastic vent fixing in-between the sun visor and hand rail. If you take it out you see the underneath of the sunroof and there will be two gaps in the metal. These are not the drain holes they are gaps in the metal structure of the sunroof. When too much water comes in, the drain cannot expel all the water and it ends up back filling and then comes out of those gaps. The water flows down the headliner on the pillar and onto the floor mat. If your pour a lot of water onto the sunroof direct you'll see the water flow down the pillar and drip down.

[@ecologicaltime]

thanks, i will check that out!

[@LaynesAddiction]

Another leak that causes this in passenger footwell/rear pass footwell is the windshield cowling took me forever to solve i had to remove my entire interior....the cowl has no seal under it so after it gets old/deformed water runs underneath and flows down the firewall behind the fusebox under the hood, for some reason this fusebox has not only a hole in it to pass through wiring bit also ventilation holes and there is no seal between the fusebox/firewall so all that water flows into that fusebox. Anyone who has wet footwells on passenger side look in your underhood fusebox on the left for water and youll see its your windshield cowl causing it/design flaw i replaced the cowl and put tons of silicon under it because i couldnt find a seal for it or an alternative that guaranteed would make sure it didnt happen again, i also put some silicon between the firewall/fusebox and a little bit under the fusebox lid to make a gasket for it and i havnt had water in the car since. Its a really big problem because literally all the water can potentially flow right into critical electronics systems in the fusebox and under the seats in the interior, so much water had to be removed because the carpet foam in the 7 is like 7 inches thick in some places so you have to squeeze them hard then use heaters for days to get the water out before it destroys the interior. Drying the carpet can also be done without removing the center console, just pull up the passenger seat and trim panels and you can fold it enough to get at everything. The hoodvents also have bad drainage right onto the engine cowl then very closeby the fusebox...for a while i almost considered deleting the vent but i was able to alter the cowl with channels so the water goes to a better spot.

[@aracelyaguilar4844]

The hoodvents? What is that cowl i have e65 750li and the hood hais a air vent like 4x10 inches what is purpose of that because water drains right down from it.

[@aracelyaguilar4844]

When u say the cowl are u reffering to the plastic seal that runs touching the bottom of the windshield from one end to the other