Yeah that’s a good choice. The K313 on the 2020 LE is out for pretty awhile. Meaning all TSBs has become labored out. I'd get that Lastly, the company manual talks a couple of program code/range that tracks the problem with the fluid. You could inquire them to examine that https://cvt-toyota40627.ampblogs.com/new-step-by-step-map-for-cvt-toyota-71058443