I bought the parts stock of a closing Mercedes Benz repair shop.  This is one of those parts. The box may or may not show signs of shelf wear and have writing or stickers on it from the parts room inventories.

For sale is a Qty. (1) NOS Genuine Mercedes Benz Idling Control Switch 190C 0005453214. I cut a bag open so I could photograph the part for your viewing pleasure.  I cant find much information other than one reference to a 190C model and a 220 model.  You do your own research please.  Please confirm the part is correct for your needs before buying. Limited time free shipping in USA!!!