What is the reason for the inaccurate fuel gauge in the Sunny?

[BriannaLee]

The inaccurate fuel gauge could be due to an issue with the dashboard or the float, but it has little impact on the vehicle's operation. How the fuel gauge works: The fuel system mainly consists of four parts: the fuel gauge, sensor circuit, variable resistor, and float. When the fuel tank is full, the resistance value of the variable resistor connected to the float decreases, causing the circuit current to reach its maximum. At this point, the fuel gauge needle is at its highest position. As the fuel level decreases, the resistance value of the variable resistor increases accordingly, reducing the circuit current, and the fuel gauge needle drops as well. Location of the fuel gauge: The fuel gauge is generally located directly in front of the driver's position, on the same panel as indicators for water temperature, RPM, and speed. Each gauge is distinguished by a simple icon.