Ecus are all under the dashboard, some on the left, some on the right and some in the middle.

The electronic control unit (ECU) is an integrated control device of the engine. Its function is to calculate, process and judge all kinds of information input by various sensors of the engine according to its own stored program, and then output instructions to control the actions of related actuators, so as to achieve the purpose of controlling the engine work quickly, accurately and automatically.