Other Fuel System Tank Assembly problems of the 2015 Ford Explorer

The fuel gauge on the instrument panel is reading that the fuel tank is almost full, however while driving the low fuel warning sensor came on and we nearly ran out of fuel. The gauge was still reading almost full. We barely made it to a gas station. After putting in a full tank of gas, the fuel gauge was showing a completely full tank. Since then, the gauge is always showing almost completely full and will go down only to almost full, not quite as low as 3/4 full tank, even if you have driven over 300 miles. Now we have to re-set the trip odometer every time we get gas, so we can calculate approximately how many miles we have driven since the fuel gauge only goes down slightly below full. This occurred around 50,000 miles.