Water Leakage

Hello, I have a 2020 Tundra and during a heavy rainfall here in Dallas, TX I noticed water has been leaking in the middle backseat. Judging by where the water is coming I am suspecting it maybe the small back window that can slide open. Anyone have this same issue and know if this is a common issue? Also wondering how to fix this. I tried to open and close and it seems like it is closing properly with no issues. Here is a picture attached for reference.

 

I've seen others have problems with the rear cab mounted brake light housing leaking.

 

yep, check that.

 

Check your rooftop antenna and see if its damaged or if the roof is dented by the antenna. I just bought (on a dry day) a used 2020 Tundra DCLB that had a damaged antenna. I was driving it through some downpour conditions this weekend and found that I had water coming in and it was settling in the headliner to eventually drip onto the middle of the rear seat. It ended up coming from the antenna access hole of the roof. I removed the antenna, and in the mean time patched it with some aluminum lined muffler tape on both sides of the roof until I can get the antenna properly replaced.

To get to the antenna bolt, you need to drop the headliner enough to gain access through the rear sliding window. Pop the Airbag labels off the C-Pillars to access the 10mm bolts that hold the seatbelt trim and pull out both C-pillars enough to pull the rear of the headliner down enough to access the bolt. If you have large hands like me, it will be a tight fit. Use a flashlight around the antenna to see if any light shines through if its not currently raining.

Hope this helps.