Jack up remaining front wheel, remove wheel & plastic panel guiding it so that you can see the fill bolt marked with “FE”. Loosen bolt. Set wheel again on. I'm a little bit anxious however, although, about CVTs in general, but ideally while in the 2021 Toyota has labored out https://cvttoyota85061.blogoscience.com/40639437/the-5-second-trick-for-cvt-toyota