It'll either do it after a few start ups or it'll take adding more gallons of fuel. More than she added last time that is; If it keeps at 17 adding just one gallon still wound't help it along. Usually more than 2-2.5 gallons is enough to make it recalculate in newer vehicles but I guess not in this case. I'm unaware of a way to 'force' it to do it by button presses.