On the 2017 RR the remote start works via the app on the smartphone. I got it all set up but cannot communicate with the vehicle. I have to note here that I live in No ID and there is no ATT cell signal within 10 miles. There is a sporadic Verizon signal here and there. Do I need a cell signal at all? My last car was a Jeep GC and I could start and preheat the vehicle with a simple click on the key fob. Whoever came up with this smartphone thing? Maybe RR is meant only for metropolitan areas?