The Surface Burner Igniter Switch is an OEM part for Whirlpool gas ranges and cooktops. This switch is responsible for igniting the gas flow to the burner, allowing for a quick and reliable start to cooking. It is activated by turning the burner knob, sending a spark to ignite the gas. Causes of a bad surface burner igniter switch can include electrical malfunctions, wear and tear from regular use, or damage from spills or moisture.