I have a 2011 Rx450h 122k miles, new to me on Jan 2023 at 109k. I recently took my car to a drive-thru carwash, and I noticed a leak inside the vehicle when it passed through.
It only leaks on the left side where the arm area is located. So I tested it a few times with a towel in the area, and it leaks consistently, even in different drive-thru carwashes.
It doesn't leak whenever I drive it in the rain, though.

Has anyone came across something similar to this and fixed it?

Thanks in advance!

 

Welcome to CL. You will find with these aging vehicles that most questions or problems have been asked or encountered before your post. Recently another member had a very similar issue and I will post the link below. FYI it was listed on the first page of threads. Also the search function works very well if you have other issues.
https://www.clublexus.com/forums/rx-...ure-rinse.html

 

Sounds good, thanks!