Hi
Think you need to get any DTC codes read. Like everything else on these cars it is not a simple wire to the bulb, an earth connection and a switch. There are a whole host of computer modules, leveling sensors, motors, LAN connections, warning lights etc. etc. A fault in any will cause issues. I am waiting for a diagnostic on the "Camera Unavailable" issue after my supplying non-jag dealer diagnosed faulty parking sensor which is still not working after replacing it 😞 In my case itis probably a faulty front bumper wiring loom which if faulty closes down both camera and parking assistance system and gives a really loud 3 second warning so that you know you are "flying solo". Without a DTC (Diagnostic Trouble Code) you end up chasing your tail and just replacing parts and hoping it works.
Regards
John