I've not had any experience with the NG 9-5, but I've had CD failures on two other Saabs, a 2003 9-3 and my current 2007 OG 9-5. In both cases I found the only way was to remove the unit. I got the CDs out, but on testing both, one CD was a copy with a thick label on it, and after getting it clear it was OK afterwards. The other one had an internal failure and the whole unit was replaced with an aftermarket unit. I could have got a new unit from Saab, but the price for an identical, outdated head unit, was many times the price of a modern head unit wit more facilities. A repair was available but the CD/DVD bit on it's own was the same price as a new unit,
I don't know if the head unit in the NG9-5 can be replaced without compromising the car controls. I believe it's similar to the Vauxhall Insignia. Is there anyone on a Vauxhall/Opel forum who has sorted this?