Hi! I have not the same but similar problem. I dont knowis there something wrong with the wiring or what.
Issues:
Everytime I turn ignition on (unit starts up automatically) , first display shows "please insert appropriate disc" , then I switch it to AV Menu and it seems that internat memory has been reset - no backgrounds or radio presets
When I changed the wiring and connected yellow and red wires together to give the unit constant 12V ignoring power on ignition, when turning the unit off it still displays "off" on the screen...so actually dont know how to turn it off really
Any sug