Need to get away from fly by wire. Too many interconnected circuits which can effect other parts of the system. Great performance when working. Chaos when it falls apart.
My cars electric powered radiator fan won’t turn on unless the air conditioner is turned on. I am sure it can be fixed but it is easier to turn on A/C. How did that happen? Gonna’ take a lot of sleuthing. Is it worth it for a car with 341 thousand miles? Try and reprogram(flash) the electronic tire pressure sensors when switching wheels around. Despite factory instructions, no professional could do it.
I'd start with the thermal switch. It automatically kicks on with the Air Conditioning regardless of temperature but may no longer switch on due to temperature alone.
I have the same issue with two Fords. The one seems unsolvable without replacing the TPS sensor/batteries within the wheel, which I'm not going to do due to the time and expense. So Ford decided I must be punished with each vehicle start, warning me of the faulty TPS sensor, then of the (not) low tire pressure.
...Click "OK" on steering wheel, then wait for second alarm to appear, then click "OK" again, THEN I can see relevant info.
This is the same vehicle with Sync bluetooth ("Powered by Microsoft!"), which takes 7 button clickes -- every start -- to do what my Toyota and seemingly every rental car on the planet can do automatically... connect to the phone for audio.
But the brakes work.