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What does it mean when the ECO indicator light comes on?

1 Answers

OIvan

07/30/25 9:48am

When the ECO indicator light on your car comes on, it indicates that the vehicle's economy mode has been activated. ECO is an English acronym derived from Ecology (environmental protection), Conservation (energy saving), and Optimization (power). The ECO mode is further divided into active ECO driving mode and passive ECO driving mode. ECO mode can be either active or passive. The difference lies in the fact that the active mode has a dedicated button, allowing the driver to choose whether to enable it. When the driver presses the ECO mode switch, the dashboard indicator light immediately comes on, and the vehicle automatically begins adjusting settings such as throttle opening, transmission shift logic, and air conditioning output power. The passive ECO mode does not have a dedicated button. When the dashboard ECO indicator light comes on, it serves merely as a reminder. The ECO system automatically evaluates your driving behavior. If your current driving operation achieves the optimal fuel supply, the dashboard will simultaneously display the ECO indicator light. Most vehicles use the active ECO driving mode, meaning they have a dedicated switch button. In daily driving, we can generally enable the ECO mode. However, there is no need to activate it when driving at speeds exceeding 120 km/h, during idle parking, in N/P gear, or in manual mode, especially when climbing hills. Doing so would not only fail to demonstrate the fuel-saving characteristics of ECO but also negatively impact driving performance. Additionally, the ECO mode typically becomes ineffective under the following conditions: When the vehicle speed exceeds 120 kilometers per hour, the car prioritizes speed, causing the ECO mode to automatically deactivate. During idle parking or when in N/P gear or manual mode, the ECO mode may also become ineffective. When high torque output is required, such as when climbing a hill, the engine control unit prioritizes ensuring sufficient power to drive the vehicle, and the ECO mode will not function in such scenarios.

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