Then I want to inaugurate the forum…. I drive cars from Europcar (Audi), all with factory-side Navi + single-CD changers. However, the drive seems to be somehow blocked, there is no CD in it, but there is no one in it either (didn’t have the assumption that the Navi DVD was in the shaft, but it is not or does nothing happen when I press the ejection button). Is there somehow a lock in it from the landlord? Greeting Martin