It works! I needed to stop the start/stop feature in my Tiguan since I carry my dogs with me everywhere and couldn't have the car turning off every time I get out to go to a store or something. This product was easy to install and works beautifully. It still allows me to use start/stop if I want but it turns it off automatically when I start my car instead of it enabling automatically. I can re-enable it anytime I want but don't have to worry about it enabling itself every time I start the car. Well worth the money. I just wish the pictures on the instructions were a little bigger so I could see them better but not worth taking a star away for that.