I bought this unit used and I bench tested it and it worked fine. It also worked fine when I first install it, but I had my car on accessory. I then turned my car on and it wouldn't make it past that screen. It thinks I have a reverse camera connected, but I don't. I can't get into the menu's to change it and turn off the camera though. I don't have the reverse cable hooked up at all I have it electrical taped off and tucked. No matter what buttons I press or if I turn it back on accessory, it stays at that screen.

 

Any idea?

I have the same problem but I know how it happened.  some how you turned your camera funtion "on" and then you got the caution screen, that happened to me today.

 

Problem is like you I can not get into the menu screen to turn it off. 

 

Hope somone out there can help us out.....

 

Anyone..................... Help!

somehow you changed the polarity of your reverse camera in the units settings.

Read the owners manual at pioneer website to either do full reset or fix the settings back.