I own a 2004 RX330 and the floor has filled with rainwater. It is also wet on the rear floor and is holding a substantial amount of water. Problem seems to have developed as of late. Has anyone else encountered this problem? Any ideas? PLEASE HELP!

 

when you open the hood along the sides are the vent areas and adjacent area clean of debri their are drainage holes their and when become clogged it can cause a leak.

 

There are all sorts of rubber seals that have to work to keep the water out. I would start at all 4 doors and the hatch, and feel along each and every seal to make sure it is seated properly.

If you can not find the leak, you can have someone run a hose on the outside while you sit on the inside and look for dripping.

 

Maybe the sunroof drains are clogged? Not sure where they are located on the RX.

 

Possible leak at the ac?

 

I too just experienced this water leak on the passenger floor as well. I checked my ac unit because I thought the evap died or the drain was clogged. I pulled the hose and it was fine. My AC works fine but am seriously confused. I want to see if I can diagnose the problem before I am forced to go the dealer and get screwed. Can anyone help?? Thanks

 

I had same problem I ran a thick gauge weed wacker line up through the drain all sorts of crap fell out of it. After that no more leaks.