Same here on my 2020. Learned you must keep it on Auto. Show the climate screen to have the ability to have two temperature controls, and the right side will control the rear temp (use the front vent limiters to adjust if too cold for the passenger). You can also turn off the rear blower buy choosing the individual sections from the front diagram. It would be nice if it worked as it should, or even better, if there was a front and rear button on the screen. So far, this is the only major issue I have had (And yes, the climate screen goes out once in a while, but not really a problem since there are dials).
Last edited by Robert443; 09-16-2019 at 02:05 AM.