Did the dealer tell you that before 12/2019? If so, Toyota released a new TSB on how to tackle this problem. They replace the entire fuel pump assembly. You may want to pay them another visit.My 17 was reading 35 % +/- and unless I was having running or "driveability" issues it wouldn't be covered by warranty. I paid to have the reset and relearn. Mine started out at zero for a while now is varying between 18-27%. I also only use E10 or ethanol free. I may go back and have it redone... They said sometimes it takes a couple trys to get it right although I don't think they really know what's causing it in the first place.
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