I just recently bout a 09 g37x s sedan. I noticed the rear passenger window doesn't want to auto down or up. I tried the reset and relearn procedure about 10 times now. I even had to do all the windows after my car sit for about a month when I was replacing bushings and installing camber arms, toe bolts and rebuilding the cv joints. The battery died. No issues for the other 3 to relearn. The window goes up and down fine. It just doesn't want to relearn.
​​​​​​I've done a bit of searching and most issues get fixed with the reset/relearn.
Its not a huge issue, I'm just curious why that one window is being so stubborn.

 

I had this problem, dealer had to replace the window motor. Thankfully, mine crapped out while still under warranty.

 

I figured as much since searching didn't pull up anything else such as sensors. Oh well, I'll be on the look out for one for that just in case it goes out.