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. Brightness Control
When the parking lights are turned on and the
ignition switch is in ON *1, you can
use the
brightness control knob to adjust instrument
panel brightness.
Brighten: Turn the knob to the right.
Dim: Turn the knob to the left.
You will hear a beep when the brightness
reaches minimum or ...