Remove your negative (black) terminal from your battery
Make sure your car has fully discharged. To verify, you may pump your brake multiple time until it become hard, or you may try to honk till no sound, or your can also try to start your engine till no “kick” sound
Re-connect your negative terminal
Start your engine, and you will be in ECU Relearning phase
At this point, you will probably aware that something is wrong with the RPM and idle timing, which is normal
All you need to do now is to drive around for 30-40min until the ECU completed the re-learning process
