Can anyone pass on some advice concerning my 2001 Highlander leaks when it rains. I recently noticed that whenever it rains the carpet on the driver side gets soaked. I took it to the dealer and they cleared the AC tube and dried the carpet. This week it rained again and the same thing happened again. There is no sign of water on the top side of the rubber mat but when I took up the mat the carpet is soaked. I looked under the dash but there is no sign of water in the area. It seems like it's comming from under the carpet. This vehicle was parked on the driveway so it's not that I drove through a puddle of water either. Did you experience this or do you know of someone who did? Thanks for your help.

SOURCE: Rain water leak

Yes Ive had this happen to my Toyota corrola and my dodge there are 2 different reasons why this is happening 1 of them it depends on if you have a sun/moon roof if so theres a vent in there so if any water or anything goes in it reroutes it too the outside of the car if its cloggeed water will spill into the car like that and just leave puddles the second thing is if you have it parked outside with trees all around theres vents up on the hood where the windsheild meets the hood they clog up so if you look along the back firewall which is under the hood all the way in the back theres a hole that gets clogged you need to clean that out and the easiest way to do that is get someone with a air compressor and blow air in that holke to push it all out it should fix all your water problems and if you have any questions let me know ill be glad to help, also please rate me.

Thanks,
Steve

SOURCE: Water leaking into 2005 Camry 6 cyl under carpet drivers side.

I think that I can help you. It sounds like your drain-tube is plugged up. Get in the passenger side, and pull the carpet back from under the glove box. Look for a black rubber pipe that goes from a black box, and pokes thru the firewall, on the passenger side. Remove the hose from the box, and have a container ready to catch water. If water comes out of the black box, your drain hose is plugged up. Clean out the clog, and you will be golden.

SOURCE: 2004 Toyota Corolla flooded passenger side mats front and back

I would say you have either a bad seal on the windshield or the seal on the passenger door opening.