Have you had your front and rear battery tested? When batteries start to go bad they can make the electronics go crazy and act funny.Hi:
Thanks for posting this, I also have had the same issue where the clock, A/C, and Radio settings will stop once the car is off for several hours. It's been frustrating too as I took it to one place last January and they tried to fix it twice. The clocks on the dash and the display show different times, at one point they got the dash clock to work and I just turned off the display clock but after daylight savings time, the clock is wrong. I tried fixing it by resetting the time/date on display but that broke it again, now each time I start the car, it's a different time. I will try again with a new dealership and take this info with me. Hopefully they can get it fixed now. It's less frustrating because I don't drive as much due to the pandemic but nevertheless, it needs to be fixed once and for all. Any other updates from anyone that has had this issue fixed would be greatly appreciated.