After searching this forum, I cannot find my exact issue. The cd/dvd feature on my Levinson will not activate. All other functions including radio and aux are great. The CD player will not attempt to receive a disk, will not make an my noise, nor will this function appear on the screen. It skips this feature. Also there does not appear to be the usual illumination in the disk slot. Is it possible this is disconnected in the rear of the unit? Previous owners did install headrest DVD players. Could this in anyway impact the front system? Thanks in advance!

 

14 year old electronics are difficult to keep running.
I personally would get a bluetooth adapter to get a signal into the system, even if it means an FM Modulator one, and just listen to music from my IPhone from now on.

 

what is the brand and model of the aftermarket headrest dvd system?
if You have that information you might be able to find out if it is stand alone or integrated into the front OEM system.

 

Has it always been like this since you took over the vehicle? or everything used to work but ceased to work all of a sudden? Like the OP recommended... find out how the rear screens are connected to the system... also just curious, out of the ordinary...did someone stick foreign objects into the dvd / cd slot?