Electronic control unit works like a car brain which has a sole authority to monitor all different modules like engine, transmission, power, brake, body, suspension, speed, power steering, ignition, and the door control module.
Modern vehicles operate with 8-bit powerful electronic computer processor, random access memory, read only memory, and input output interface. It generally controls all systematic flow of operations sensors throughout the vehicle for better automotive performance. It is a central controlling unit of all complex functions to smoothly performance for a vehicle.