Although I have the new Nav CIC system in my 2011, same thing happened.
Sporadic DVD in drive recognition, swapping different retail discs did not fix problem.
Eventually the entire head unit had to be ordered and replaced.
Considering the car only had around 6,000 km when it first appeared, it was a rare occurrence. Mind you my car had been in a front end collision with $35k damage prior to the DVD drive problem.
There could be dirt or dust on the laser. At your own risk, you could try a DVD cleaner disk.
If it is a drive failure, then you have to order a new drive or possibly swap it with one from an auto wrecker.