The backup monitor on my 2003 acts dead. Is there a fuse somewhere? It won't pop up after flipping the power on and hitting the blue button.
Probably a broken wire. Time to start tracing. Start by checking every solderless connector.
I have found the culprit, a slightly burned connector supplying power to the back of the "radio" with the pop up. Wiggling and cleaning got it working until I ca replace the connector
This brings up another question: where is the relay supplying power here? The wiring diagram shows a switch with multiple heavy gauge wires, but the actual switch only has two thin wires.