Most people believe that once an ECU has been “set”, it cannot be reset. This is not the case. In fact, there are several ways to reset an ECU.
The most common way to reset an ECU is to simply disconnect the battery. This will cause the ECU to reset itself and will often fix any issues that you may be having with your car.
Another way to reset an ECU is to remove the fuse for the ECU. This will cause the ECU to lose power and will also reset it.
Finally, you can also use a special tool to reset the ECU. This tool is called an OBDII scanner. This will allow you to reset the ECU without having to disconnect the battery or remove the fuse.
If you are having issues with your car, it is always a good idea to try resetting the ECU first. This is a simple and easy way to fix many issues.