If your fuel gauge is inaccurate, the problem lies with:
* The fuel level sender unit: This is the most likely culprit. It's located in the fuel tank and can become faulty over time, leading to inaccurate readings. It needs replacement.
* The fuel gauge itself: Less likely, but possible that the gauge in the instrument cluster is malfunctioning. This also would require replacement or repair.
* Wiring issues: A problem with the wiring between the sender unit and the gauge could also cause inaccurate readings. This needs electrical diagnosis.
To fix an inaccurate fuel gauge, you'll need to have a mechanic diagnose the problem. They'll likely start by checking the fuel level sender unit and its wiring. Simply trying to "reset" it won't work because there's nothing to reset.
