Had a weird problem today. My 2003 Rav4 was just above a 1/4 tank full when I took it to a gas station today to fill it up. After the car was filled up, I went to start the car. After starting I saw that the Fill up tank light was on and my fuel gauge was now at the empty mark. Any idea what could have caused this. Obviously the car is running on a full tank after refueling and even before it was running at a 1/4 tank. What could have all of a sudden caused it to show empty on the gauge right after refueling?? Gonna call the dealer tomorrow to schedule service but thought I'd try asking on the board first to see if anyone else has had this issue.