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 Owners Manual. Jump Starting Procedure
Turn off the power to electric devices, such as audio and lights. Turn off
the engine,
then open the hood.
Connect the first jumper cable to your
vehicle's battery + terminal.
Connect the other end of the first jumper
cable to the booster battery + terminal.
► Use a 12 ...