Why did the eco light suddenly go off in the 2017 Leiling?

[DelColton]

The sudden disappearance of the Leiling's eco light indicates that the car's energy-saving mode has been turned off. ECO stands for the car's energy-saving mode. Introduction to eco: Eco refers to the car's economical driving mode. It is an English abbreviation formed by the combination of Ecology (environmental protection), Conservation (energy saving), and Optimization (power). The Eco mode is further divided into active eco driving mode and non-active eco driving mode. When the eco indicator light on the dashboard is on, it means the car's economical mode is activated. Non-active eco mode: The non-active eco mode does not have a dedicated button. When the eco indicator light on the dashboard is on, it serves merely as a reminder function. The eco mode automatically evaluates driving behavior. If the current driving operation achieves the optimal fuel supply, the eco indicator light will simultaneously appear on the dashboard.

[LeGemma]

I've driven a Toyota for many years and encountered the issue of the ECO light not turning on a few times. The main reasons could be that the ECO mode isn't activated, the button was accidentally turned off or stuck. Try pressing the ECO button on the center console to see if the light responds. Another issue could be the throttle sensor—the light only comes on when you press the pedal lightly, and it turns off if you drive too aggressively. Poor wiring contact or a blown fuse is also common. Open the engine compartment's fuse box, look for the small fuse labeled ECO, and replace it if it's blown. The simplest fix is to reset the system: disconnect the battery's negative terminal for five minutes after turning off the engine, then reconnect it. Sometimes, this resolves ECU software bugs, and the light returns to normal. The ECO light reminds you to drive fuel-efficiently. While it not lighting up doesn't affect driving, it's best to have it checked at a professional repair shop to avoid bigger issues. Regular maintenance can prevent these problems in the first place.

[StLouis]

Friend, as a DIY car repair enthusiast, when the ECO light suddenly goes out, I suspect it's a sensor issue. The ECO system in a 2017 Toyota Levin relies on speed and throttle sensors to activate. If the sensors get dusty or fail, the light won't come on. Check your car's buttons—press the ECO switch to see if it's loose. Then try driving gently to see if the light turns on. The fuse box is located near the driver's footwell; check if the ECO fuse is blown. A short circuit in the wiring can also cause this—simply use a multimeter to test for continuity. Sometimes the ECU acts up; try resetting it by disconnecting the battery for a while after turning off the engine. Don’t rush to the dealership—troubleshoot it yourself first to save time and money. While ECO mode is handy, the car can still run without the light, but addressing the issue promptly prevents small problems from becoming bigger ones.

[McEliana]

My old Toyota also had a similar issue with the ECO light. Common causes include the ECO mode being turned off, the button not pressed properly or poor contact. Driving habits matter too – aggressive driving may cause the light to turn off, while gentle driving might keep it on. If the light really won’t come on, check if the button works or if a fuse is blown (the manual shows the location). Try a reset by disconnecting the battery for a minute. Although the ECO light is just an indicator and won’t affect driving if it’s off, it does help save fuel. Visit a 4S shop soon to scan for trouble codes and fix the root cause to prevent it from happening again.

[Cole]

I often help people check their cars, so don't panic if the ECO light goes off. First, check if the ECO mode has been turned off—press the button to confirm. Sensor malfunctions can also easily trigger this, such as when the light doesn't activate at low speeds. Inspect the fuse box, located in the engine bay or under the dashboard, and replace any blown fuses. Loose wiring is a minor issue—just plug the connectors tightly and test drive. For a simple reset: turn off the engine, disconnect the battery negative terminal for ten minutes, then reconnect. The ECO light is just a fuel-saving reminder; the car can still run if it's off, but it's best to have a mechanic check it to ensure there are no issues with the ECU or hardware, giving you peace of mind for maintenance.