Well, I just installed the Homelink Mirror in my 2018 Niro. At first reading of the instructions it looked like a lot of work removing panels and covers. So I decided to first remove the mirror and then I realized that since I had the Auto-Dimming Mirror it was as simple as unplugging that mirror and plugging in the Homelink mirror. It is true that the ignition has to be on but, if it isn't why would I be opening the Garage door While I thinking about it, is anyone interested in purchasing my Auto-Dimming mirror. All of the stuff needed to install it is included with the mirror.