At 3 1/2 years the battery was changed and the rear camera stopped working. The guide lines are there but no images on the diagnostic menu screen. 6 mo later the side camera stopped working. when you go into the menu the side camera selection no longer exists. I have been removing fuses looking for one that has blown out but have not found anything. Help. Thanks

 

Very unlikely this is something you can fix with fuses. The cameras are wired directly to the radio's video section. All of the camera control and switching happens inside the radio. Changing the battery shouldn't have any effect on cameras, but it's basically a small computer that can have typical PC problems.

You can try disconnecting the battery for a few minutes to erase the memory inside the radio. (i.e. the IT answer of turn it off and on).

If you've never removed the factory radio, then it's highly unlikely the rear connections have failed. If you have messed around back there then you want to reconnect each of the camera cables.

It is always possible to have a camera failure. I haven't heard of any and this is a new issue to me.