I was resetting my trip odometer after gettin' some fuel and hadn't restarted the engine. I went through to go back to the main odometer and saw the letters ECO. What is it? When I start the engine, ECO disappears... :thinking:
ECO ON (or off) turns on/off the eco light. The ECO light itself is basically a crude TPS indicator (throttle position sensor) telling you that you are light on the throttle (aka using minimal fuel) and are driving green. The longer you spend driving with your ECO light on, the better your MPG.