So this morning as I'm driving to work, I notice that there was some water on the passenger side floor mat. I still have these rubber floor mats over the Z ones from the winter, so I noticed it pretty easily. We've had several nice days here lately but it did rain last night. There was no water anywhere else so I don't think it leaked in from a window or anything. The only thing I can think of is I had the AC on for about 5 minutes yesterday but have never seen water like this on the floor. The AC was set for the vents and floor. Has anyone else seen this?

 

This happened to me in a different car quite a few years back. It turned out to be a faulty seal around the front windshield. Every time it would rain, water would stream in past the seal and run down the a-pillar inside the car. I would actually get standing water in the rear passenger seat area. I would track this down asap because if the water is entering anywhere above the dash board, it's potentially passing very close to things like your ECU and TPS system/antenna, etc.

 

Thanks, I'll have this checked out.

 

same thing in my previous car