The fuel gage selector button is located on the right side of your instrument panel.
The fuel gage selector button allows you to check the fuel level of both the gasoline and the CNG fuel tanks.
If the switch is pressed while operating on CNG, the fuel gage will tell you how much gasoline is in the gasoline fuel tank. If the button is pressed while operating on gasoline, the fuel gage will tell you how much CNG is in the CNG fuel tank.
During the fuel level check, the fuel gage will display the fuel level for about 10 seconds. The gage will then return to its previous position and tell you the level of the fuel on which the vehicle is operating.