Check the mute button
The EC button is for "economy" and when you press this button, it turns off the a/c compressor, to give you more economy or mpg while your driving
Unlock the car doors and then the gas door is unlocked
If you can't turn off ec light by pushing the ec button you have a fault with your climate control system. Either you are low on freon or have a faulty sensor in the system.
It is on if you selected it by pushing the button.
drivers door below the power windows switch,,,pull up button red light indicate truck open
You will need to push EC button and adjust the temp.
Click the EC button on and off; is the red light on all the time? If its off then click on recirc button with lowest temp setting for both sides. DominicArnold@cox.net answer there is a fault in the system the light that's why its on your gas levels are probably low
A fault with the headlight control unit or the acc push button module
You will have to pull down the head rests. push them back up and then hit the button on the dash. If it is included on your vehicle
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You put your mouse on the EC tab and then click on lessons. scroll down and the button should be there.