Does anyone have any ideas of how to narrow down where the water inside my cabin floors is coming from? The carpets are constantly wet, mainly on the passenger side but all floor boards are holding moisture.

From research I’ve come across possible seam sealer going bad on roof, or a door or windshield/ wiper cowl gasket, or the evaporator inside the cabin sweating. I’ve adjusted the sunroof so the seal is good, yet water is still entering. I’ve taken apart the passenger a pillar and the drain tube is open, yet on the side of the dash is rust looking as is water was once dripping there.

 

You mentioned the sunroof drain tube, but what about the spot in the sunroof well where water enters the drain tube?

Only asking because the the sunroof drains clogging here is a very common source of cabin leaks.

Best of luck figuring it out.