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. Headliner Removal and Installation (4-door except Natural Gas models)
842100
SRS components are located in this area. Review the SRS component
locations and the precautions and procedures before doing repairs
or service.
1.
Battery Terminal (SRS) - Disconnection
...