I reformatted the SD Card and also changed the live view back to "Front Camera with Rear Overlay".
One of those two changes seems to have fixed my problem, as the rear camera recorded during my morning and evening drives today.
Here is the file list for yesterday in the MOVIE folder. As you can see, the rear camera is not creating any files.
20211014_053437_00841F.MP4
20211014_053938_00842F.MP4
20211014_054438_00843F.MP4
20211014_054938_00844F.MP4
20211014_055438_00845F.MP4
20211014_060013_00850F.MP4...
I've had the front camera installed for a couple of weeks.
This week I finally got around to installing the rear camera.
The rear camera works as expected in parking mode. It does NOT, however, work when I'm driving down the road.
Any suggestions? The manual that came with the camera is...