Well it happened again. Cold raining day all day and my cabin filter is soaked. Only happens in spring and fall and only if its cold, well only then I notice maybe because I drive home freezing my ass off. I built a little cover over the cowl area where the filter is, which I thought solved it, but apparently not fully. I checked drainage holes etc, I don't understand why it gets soaked, it's almost like the fresh air cover should close when you shut the vehicle off to block the water. Any insights into this? Remove cowl and you can see the airfilter right there, so I don't see how it doesn't always get wet..... but my other car also a lexus is the same design with no issues.