Reset service engine soon light 98 infinity i30?

To reset the "Service Engine Soon" light on a 1998 Infiniti I30, first ensure that the underlying issue has been addressed. Then, disconnect the negative battery terminal for about 15 minutes to clear the ECU memory. Reconnect the terminal and start the car; the light should be off if there are no remaining issues. Alternatively, you can use an OBD-II scanner to reset the light directly.