An eco light on a car or vehicle means that you're driving your car or vehicle in a way that is fuel efficient.
The eco light when on means that the vehicles "Eco Mode" is engaged, which adjusts the engine, transmission and A/C electronically to save gas as well as soften the throttle response and shifts gears sooner and reduces power of the engine for better MPG or fuel mileage.
The Eco light can also be a coaching light which turns off when you accelerate too hard.
It's a guide for fuel efficiency and not usually a warning, and it helps you maximize the miles per gallon by encouraging you to drive smoother.
Eco mode also affects the car's AC output as when eco mode is on, the power to the AC compressor is reduced to improve fuel mileage.
Eco mode limits the output of the AC compressor, which can result in weaker cooling and less airflow and in some cases, under heavy load, the AC compressor may turn off completely.
And in some vehicles, with AC mode on, the fan speed is also reduced, which further decreases the cooling power.
Eco mode, basically runs your AC compressor slower, which reduces the pressure in the condenser and means the motor uses less energy to run the system, so less cool air will come out of the AC with eco mode on.
Eco mode works by shifting the transmission gears earlier at lower RPMs and adjusts throttle response to save fuel, which can result in more frequent downshifting and less responsiveness in some scenarios.
Although eco mode is not usually bad for the transmission, eco mode could result in extra wear and tear on the transmission in certain driving conditions, like driving a lot of hills.
Although for most highway driving and city driving and on level roads, eco mode can be a good way of improving your gas mileage.
Eco mode on a car is a setting that helps adjust the car's systems to prioritize fuel efficiency, which makes the car use less gas by softening the cars throttle response, shifting the gears earlier in automatics and CVTs and also reducing the power to the air conditioning.
Eco mode also encourages smoother and less aggressive driving for better gas mileage as well as lower emissions.
Eco mode makes your car feel less responsive, although eco mode also saves you some money and helps you be greener, especially when on steady drives, and some models even show a green "eco" light or score as you drive the car efficiently.
You can turn the eco mode off if you prefer to and turn it back on when you want it back on.
To turn eco mode off you simply press the eco mode button and it will turn the eco mode off and then you simply press the button again to turn eco mode back on.
The eco button is often located near the steering wheel or shifter and pressing it turns the mode on or off and may have a leaf symbol as well and say eco.
Driving in a fuel efficient away or because you activated eco way is what causes the eco light to come on.
If the eco light comes on when driving it's a good sign and good indicator that you're driving gently and maintaining a steady speed which is fuel efficient and means you're getting the best fuel mileage.
If the eco mode stays on and it's not just because you're driving good and efficient then either you or someone has turned on the eco mode.
Setting eco mode intentionally limits the throttle and air conditioning to save fuel.
You can deactivate eco mode by finding the eco mode button and simply pressing the button to turn it off.
Eco Mode is good for when city driving but when highway driving it's best to turn off eco mode to have more power otherwise the vehicle can be sluggish and not get up to enough speed.
In eco mode you're driving in a way that maximizes the car's fuel economy and means that you are accelerating gently, maintaining a stead speed and braking or coasting smoothly.
Eco mode also makes the engine more gentle, reduces air conditioning use and modifies the transmission shifting to use less fuel.
The eco button is often located near the steering wheel or shifter and pressing it turns the mode on or off.
Although a flashing eco light, especially when it's paired with a flashing check engine light can indicate a more serious engine problem or emission system problem and could be due to a faulty sensor, low oil level or dirty air filter.
If the eco light is flashing, especially with a flashing check engine light you should have the vehicle scanned with an OBD-II scanner to find the specific code and cause.