Sail's EMT gearbox is based on the traditional manual transmission car, without changing the structure of the car engine and transmission, and adopts the motor as the external actuator of the transmission. It replaces the whole process of manual gear shifting according to the trajectory of gear shifting process. EMT gearbox is an electro-hydraulic control system based on manual gearbox, which realizes the automatic control of clutch and gear selection, thus achieving the effect of convenient and easy driving of automatic transmission. When the gearbox self-test light is on, there must be something wrong with the gearbox. Sometimes the engine fault light is always on, which may not affect your operation. However, if you continue to drive like this, you will be irresponsible for your car. Because your car is not under warranty, I suggest you go to an overhaul factory or a repair station that can detect the fault, and you will understand everything with the instrument.