1. Ensure that the issue causing the Check Engine Light has been resolved.
2. Turn off the engine and wait for a few minutes to let the electronic control unit (ECU) cool down.
3. Locate the OBD II port in your Santa Fe. In most models, it is usually found under the dashboard on the driver's side.
4. Connect an OBD II scanner or a code reader to the port.
5. Turn the ignition key to the "ON" position without starting the engine.
6. Follow the instructions provided on the scanner or code reader to access the diagnostic menu.
7. Navigate to the option for clearing or resetting trouble codes.
8. Select the option to clear or reset the codes and confirm the action when prompted.
9. Turn off the ignition and disconnect the scanner or code reader.
10. Start the engine to verify if the Check Engine Light has been reset.
Note: The exact steps may vary slightly depending on the model of your Santa Fe and the specific OBD II scanner or code reader you use. If you are unable to reset the Check Engine Light using this method, you may need to consult the owner's manual for your vehicle or have it diagnosed by a professional mechanic.