Just installed a new screen with Apple CarPlay, but unfortunately, it seems to that the old unit still renders the audio causing no audio. Wondering if replacing the head unit model NXF9138 will fix the current problem of no audio but the working screen, backup camera and everything else is fine. Also found head units in my cars year a 2014 is 350 without the sim area and wonder if it matters due to the new apple CarPlays own radio and GPS systems.

 

The difference in the bottom of the circled head unit