Why does my monitor occasionally chime and display a message saying "Check the backseat"? Can I turn this alert off?

The “Check the Backseat” message is a built-in safety reminder that appears at the end of a drive. You can turn it off in the monitor settings if you do not need it.

Full Answer:
The “Check the Backseat” alert is designed as a helpful reminder to check your rear seat before leaving the vehicle.
The monitor may play a chime and show this message when the system is powered off or disconnected from power at the end of a drive.
If you would like to turn this reminder off, tap the screen and go to Monitor Settings > Warning Image, then switch the feature Off.