The physical controls on cars from 2010s were already quite minimal and worked well. Most of em used 5 buttons and a knob for the temperature, and another 5 buttons and a knob for the audio. These new touch based systems should aim to replicate that rather than put in a menu system like its a tablet. Reserve 1/3 of the screen for these 10 buttons, put in 2 physical knobs, and use the rest of the screen to do whatever fancy shit you want. Just make the 10 buttons static toggles. Hitting the heater button should turn on the heater, not pop up a menu to select the level of heating. Use it like the toggle it has always been.