My 2016 4 cylinder Tacoma has
My 2016 4 cylinder Tacoma has the very same issues as the 6 cylinder but no TSB was created for it. Took it to the dealer for the upgrade and was told by the service manager there is no upgrade for the 4 cylinder with the exact same transmission. Likes to go to 5000 rpm when shifting from 3rd to 4th. Called corporate and was told there is no fix for the 4 cylinder period!