The ECON button turns the ECON mode on and off.
The ECON mode helps you improve your fuel economy by adjusting the performance of the engine, transmission, heating system*/climate control system*, and cruise control*.
Honda Civic Service Manual. Front Fog Light Bulb Removal and Installation ('13-'14: 4-door)
1.
Front Fog Light Trim
Except Si model
Si model
1.
Remove the front fog light trim (A).
...