What is a fuel reset button on 2006 Ford Explorer located under the glove box passenger side?

There's no such thing as a "fuel reset button" under the glove box of a 2006 Ford Explorer (or any car for that matter). Fuel systems don't typically have a button to reset them. What you might be seeing is something else entirely.

Under the glove box, you might find:

* Diagnostic connector (OBD-II port): This is used to connect a scan tool to read diagnostic trouble codes (DTCs). It's not a reset button.

* Other modules or wiring harnesses: Various electrical components related to the vehicle's systems are located behind the glove box. These wouldn't be reset buttons either.

* Something else entirely: It's possible you're mistaken about what you're seeing.

If you're having a fuel-related issue with your Explorer (like a fuel gauge problem, starting issues, or poor performance), you should consult your owner's manual or take it to a mechanic for diagnosis and repair. Don't attempt to "reset" anything you're not familiar with, as you could damage the vehicle's electrical system.