The electronic control unit (ECU) is the brain of the modern automobile. It is a computer that controls various electronic systems in the vehicle, such as the engine, transmission, brakes, and suspension. The ECU constantly monitors the various sensors in the vehicle to ensure that everything is operating correctly. If a problem is detected, the ECU will take action to correct the problem.
An electronic control unit (ECU) is an electronic device used to control various electrical systems and subsystems in a vehicle. ECUs are found in all modern vehicles and are responsible for controlling a variety of functions, including engine management, transmission, braking, and suspension.