If the sensors are inaccurate, it's probably entirely that they indicate more in the tank than there is, not less. I can't imagine the monitor telling you the tank is empty when it wasn't, unless somebody cut the wires.
2009 Escape 17B "Toad"
2008 Toyota RAV4 V6 Sport
North Vancouver, British Columbia
What happens to the hole when the cheese is gone?
- Bertolt Brecht