My Tesla app is at 4.15.1. Over the past few years I have been happy to use the app to pre-heat my Model 3 and the seats. I am, however, struggling to understand the litte “Heat/Auto” sub-menu that now comes up when trying to set a seat heater on. As far as I know, there is no manual for the app interface anywhere, so I am hoping that someone here can explain what clicking on “Heat” or “Auto” is supposed to do (assuming you can hit the right tiddly little button).