How to reset vehicle computer on 2001 Hyundai xg300?

To reset the vehicle computer on a 2001 Hyundai XG300, you can disconnect the negative battery terminal and leave it disconnected for about 15-30 minutes. This will allow the computer to reset and clear any stored trouble codes. After reconnecting the battery, start the vehicle and let it idle for a few minutes to allow the computer to recalibrate. If you continue to experience issues, consider checking for any underlying problems or consult a mechanic.