What does the ECU do in an Audi A2?

I've noticed there is a component called the ECU (Electronic Control Unit) in my Audi A2, but I'm not sure what its purpose is. Can someone explain?

The Electronic Control Unit, or ECU, is responsible for controlling the engine's performance and efficiency. It reads data from various sensors and makes adjustments to optimize performance. My advice would be to regularly check the connections and wiring of the ECU to ensure it is functioning properly.

The ECU can also regulate other functions in your Audi A2, such as air conditioning, anti-lock brakes, and transmission. It's important to keep the ECU clean and free of debris, as any damage can lead to malfunctions in these systems. I recommend cleaning the ECU every time you change your oil.