Rain leaking into back of cab

I have a 2017 Tacoma. After it rains the carpet behind driver seat is wet. No visible signs of where water is coming from. Ceiling is dry. No dripping water anywhere. No stains. Anyone else have this problem?

 

The third taillight is common, but also the vents in the back wall under the rear window are reported to leak a lot

 

Welcome to TW!

 

I have not had a water problem.
There was an issue with the 3rd brake light leaking, though wetness behind the driver seat seems outta the way for that. Water travels in mysterious ways.

I would check your door seals and look underneath. I think there's a couple ways through the floor that should have rubber plugs in the holes.

 

Is this from stationary or while driving?

https://www.tacomaworld.com/threads/clean-cb-install-on-my-trd-pro-not-janky-at-all.490998/

This image is from underneath the truck, there are some holes under there that are plugged by rubber grommets, and there is one right behind the driver seat. This SHOULDN'T be an intrusion point from stationary, but while driving - you'd likely see some splashing getting up in there if the grommet is removed.



This post/thread shows it a bit better too on the top side

https://www.tacomaworld.com/threads/grommet-for-wiring-access-into-cab.435685/#post-12602911