I have a 2000 Lexus ES300 and I’ve had water pooling on the floor on the driver’s side, both in the front and in the back. The carpet in both areas is soaked. It’s happened twice after very heavy rainfall. There was previously a similar issue with the passenger’s side, which was addressed at the time by using silicone caulk along the base of the windshield on that side to improve the seal. I wasn’t the one who did that fix, so I’m not sure whether anything else was tried at the time, so as far as I know, that resolved the issue.
I noticed a gap in the black rubber sealing on the driver’s side and, beneath that, in/around the hood, a bunch of muddy buildup. I’ve scraped that clean and was thinking it would be worth caulking the windshield in that area.
But I’m not sure whether that’s where the leak is happening. I also understand that if the sunroof drain tubes get clogged, this can occur. I went to examine the drain holes up on the sunroof and for the life of me I couldn’t find them. I’m also not sure where the drain tubes lead out to. I’ve stuck a small pipe cleaner in every hole along the bottom of the door and the edge of the body on the driver’s side, but those all seem to lead to hollow areas in the frame, not any tubing.
So, question #1 is whether it’s possible the initial solution of clearing out the mud buildup and caulking the windshield will work. Is it possible that the buildup of mud and leaves clogged some draining that would have gone out through the hood or wheel well and sent it back into the doors and somehow into the car? Could the lack of a proper seal around the windshield have contributed?
Question #2 is where the heck I find the both the openings to the drains on the sunroof and the bottom where they drain out. And, is this more likely to be the real issue?
Question #3 is, is there another possible reason for this?
Some relevant info for diagnosis:
The carpet only seems to be particularly wet in the flat bottom part of the floor. Areas that are ridged/raised up (like under the seat, behind the pedals, etc.) seem to have remained mostly/completely dry.
Also, my speakers have stopped working the day after the most recent storm. When I turn on the radio, I hear a small clicking noise, but no audio from the speakers. Makes me think some wires got wet somewhere. But if that helps anyone figure out where the water is, I assume it could help diagnose the problem. (Also, is there any hope that whatever electrical component that got wet will just dry out and work again?)
Thanks for reading the long post, and thanks in advance for your help!