Quote:
Originally Posted by mikieboyblue
ECO is designed to use an "economy" version of the heating and ac. Basically it helps save gas and has been on most Toyota Carmies (and other models I am sure) for over 20 years.
When you turn it on, there is a green light that should be lit within the button and the heat/ac display should show the letters ECO in the middle-left.
To maximize fuel economy, use the ECO button at all times. To get faster heating and cooling, turn off ECO.
Note: If you use the defroster, ECO will ALWAYS be OFF.
Mike
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You are correct. It does light up with a green light. It was only visible at night. During the daylight hours, I couldn't tell if the green light was on or not.