Hi there, I have a CLS350 Grand Edition from the UK that is now in New Zealand. I am wanting to change the DVD from Region 2 to Region 4. Is this something a user can do, or does it need to be done by a Mercedes outlet. My stereo I think is the 2009 version with the screen down by the controls. In the Vin Decoder it says 512 Comand APS with DVD and 518 Universal Communications Interface. I was surprised a search of the forums for "CLS DVD Region Change" brought up no results for this as lots of of cars get imported here. Is it something that no one can change?