Here are some possibilities:
* Trip Odometer Reset: Many vehicles have a trip odometer that you can reset to track fuel consumption over a specific period. This is usually done by pressing and holding a button on the instrument cluster near the odometer display. This *doesn't* reset the fuel system itself, but it resets the counter used for calculating fuel economy.
* Average Fuel Economy Reset: Similar to the trip odometer, some vehicles have a feature displaying average fuel economy. This too usually has a button on the instrument cluster to reset it.
* Onboard Diagnostics (OBD) System Reset: Some problems related to fuel delivery can trigger trouble codes in the OBD system. Resetting these codes usually requires a specialized scan tool, not a button on the dash. *This should only be done if you understand the implications and are familiar with OBD diagnostics.* Improperly resetting codes can mask underlying problems.
* Fuel Gauge: The fuel gauge itself isn't reset; it simply reflects the level of fuel in the tank.
To find out how to reset *your* vehicle's fuel-related information (trip odometer, average fuel economy, etc.), you should:
1. Consult your owner's manual: This is the best place to find the specific instructions for your car.
2. Search online: Search for "[your car make and model] fuel economy reset" or "[your car make and model] trip odometer reset" to find tutorials and videos.
If you're experiencing problems with your fuel system (like the gauge being inaccurate or the car not starting), you shouldn't try to "reset" anything yourself. Take it to a qualified mechanic.
