The Vent Control Button is an OEM component specifically designed for select Bosch downdraft ventilation ranges. Pressable from the countertop, its reliable switch operates the vent position. Precise guidance aligns ductwork airflows.  Symptoms of a faulty control button may include intermittent or unresponsive vent movement. Over-activation degrades contacts requiring change.  Causes of a bad button relate to typical contact wear reducing conductivity. Splashes introduce moisture necessitating replacement over time. Causes of a bad vent control button involve: Vents remaining stuck open exposing grease-laden air   Closed vents trapping cooking emissions near surfaces Failure to change vent direction as needed  This OEM Bosch part is also compatible with some Thermador, Dacor, and Viking downdraft ventilation ranges. Replace to maintain convenient vent management directing smoke and odors safely outdoors.00414825 (AP2832334) replaces 1021690, 14-33-611-01, 19-12-145-01, 414825, AH3460307, EA3460307, PS3460307, PS8710623.