The dealership scheduled an inspection by a regional specialist. Upon arrival at the dealership 9/30/21, the low on fuel indicator was on, and the display said "16 miles to empty".
The regional specialist called a few hours later and stated the following:
They pumped 2.75 gallons of gas from the tank, "as much as the fuel pump would pump out". He stated that there could have been as much an another gallon remaining, in the tank after the pumping.
They then added 13.43 gallons to the tank.
The "vehicle is operating properly at this time".
The "miles to empty" reading is an estimate based upon previous tanks of gas.
He was going to present his findings to Toyota headquarters. He did agree that adjustments should be made to the "miles to empty" reading (i.e. it shouldn't display "16 miles to empty" when there are at least 3 gallons of gas remaining.