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. Subwoofer Removal, Installation, and Test (4-door)
012140
Removal
NOTE: SRS components are located in this area. Review the SRS
component locations and the precautions and procedures before doing
repairs or service.
1.
Rear Seat Cushion
...