Jaguar Repair Problems? Ask a Jaguar Repairs Expert.
Based on your description I suspect the problem is with the nav module which is the component on the trunk that reads the disc. Before replacing it we should try another disc set. This should be available at your local dealer or you should be able to find then online. Eject yours and look closely for any signs of damage. The screen blanking out in reverse may be related bit if your vehicle is fitted with a back up camera the camera could be bad or a problem with the wiring harness in the trunk. Let me know.