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, climate control system, and cruise control.
While in ECON mode, the climate control system has greater temperature fluctuations.
While your seat belt restrains your torso, the front airbag provides supplemental protection for your head and chest.
The front airbags deflate immediately so that they won't interfere with the driver's visibility or the ability to steer or operate other controls.