This investigation was opened based on three Vehicle Owner's Questionnaire reports alleging smoke and fire occurred inside of the driver's door.The complainants reported that the master power window switch and, in some cases its wiring harness, had sustained heat related damage and required replacement.Since opening the investigation the Office of Defects Investigation (ODI) has received two additional reports.The reports provided by Honda in response to ODI's Information Request appear consistent with ODI's Vehicle Owner's Questionnaire reports. Based on the information provided by Honda in response to this preliminary evaluation and its ongoing analysis, the investigation will be upgraded to engineering analysis EA11-004 to further study the issue.