Remote start worked for most of the first year then, from what I can tell, the app updated and the remote start hasn't worked since. The rest of the app is fine. The customer service people told me what "preconditions" had to be met but couldn't tell me anything beyond that. Spoke with a technician at the dealership playing around with it for over an hour. The bottom line there was, yep it's weird. It ought to work. We can't figure it out. Call customer service.