2005 Prius MFD drama

My 2005 Prius is still sayin “check the connection of the air conditioner” with the new MFD in the audio doesn’t work only thing work on the steering wheel is the defrosters, MAX ac button, and cruise control. I swapped out fuses that were blown and still nothing is there anything else to check for will the AMPLIFIER be the problem of this situation. My 12v Battery reads over 13v and I can’t find videos ab the MFD saying “check the connection of the air conditioner” if there’s anything else I can do plz lmk im trying everything I can rn