Just today getting into the car from the grocery store, noticed that the touchscreen was dead. Stereo was working. But I switched off the car, hoping a reboot would fix it, and when the car started the touchscreen was still blank but the stereo no longer worked. Pushing any physical button did not work (including Menu) for both the screen and the stereo.

Anyone else had this happen? The car is only a few months old.

 

Does your screen flash the jaguar logo ?? or just stay black ?
I had a similar problem and I posted a thread on how to fix it and where to look for the problem.

GO CHECK ON MY PROFILE FOR FLICKERING // FLASHING NAV SCREEN

hope it's gonna help you or point you in the right direction !