Thought I would give an update. I took my Ex in last Tuesday for the camera. I showed the service adviser pictures and video of the camera acting up. It was cool and overcast that day and the camera was functioning fine. I figured that they wouldn't do anything, but I was wrong. Apparently the camera had logged a code. It was DTC B115E:01. The technician cleared the coded, ran the self test again and the code came back. They replaced the camera, reran the self test again and this time no code. So it appears that the camera may still function even if it is setting diagnostic codes. I haven't been able to locate what that particular code indicates, but I imagine that is is monitoring a signal coming out of the camera itself. I also think, based on what my camera was doing, that the camera module is performing the digital to analog conversion itself, sending an analog video feed back to the APIM. I am not sure why you would do this instead of sending a digital signal, but that appears to be why the camera has to be programmed as overlaying the guidelines is done in the digital domain prior to the analog conversion.