What is the reason for the constant yellow light on the Mercedes GLK ECO?
1 Answers
Mercedes GLK ECO yellow light constantly on refers to the automatic start-stop failure. When the vehicle is climbing or using high-power air conditioning, the vehicle needs to operate under heavy load. To ensure sufficient power, the automatic start-stop function is sacrificed at this time. When the power demand decreases, the ECO light will turn green again. The principle of ECO: ECO mainly involves comprehensive judgment and analysis of factors affecting fuel consumption during vehicle movement, such as automatic transmission gear, engine speed, vehicle speed, braking, and transmission oil temperature. The ECU control unit calculates the optimal fuel quantity to be provided to the engine for operation, effectively reducing fuel consumption compared to normal driving mode. Simply put, it controls the engine speed with reasonable gear selection to reduce unnecessary fuel consumption. ECO modes: Generally, it can be divided into two types: passive ECO driving mode and active ECO driving mode. The passive ECO driving mode mainly serves as a reminder and guidance function. The active ECO driving mode usually has a button; after activation, a series of driving-related settings will change, such as a smaller throttle opening corresponding to the same accelerator pedal depth (the accelerator becomes less sensitive), and the transmission shift logic prioritizes economy (earlier upshifts). Some vehicles will also adjust the air conditioning output power simultaneously.
