CVTF FE changed for 2nd time. Ist one in Jan 2021 without opening the pan and 3 cycles of fluid change, it was good experience with adjustment of fluid level at specific temp. Yesterday I opted for fluid change through pan opening! After gone through both procedures I feel pan opening one is most economical and effective. You can replace more than 50 % fluid (4 lit) in one go, do level optimised by temp detection mode and that’s it!
Without pan opening you can drain fluid intermediate layer … as bottom layer having more concentration of suspended particles.
Filter change may be done or cleaning by petrol and than bone dry by air pressure and giving time to evaporate all petrol particles.
I’m satisfied with pan opening method, if seniors have any suggestions or advice it will be good for all of us.
(Vehicle Toyota Corolla grande F/L 2017, CVTI…. Odo 50000 km)