hi everyone, the radio on my e63 is playing up at the moment, it is intermitent but becoming more and more regular. the audio, wether it is through the radio or aux is muting and cutting out for around 5 seconds, returning for a few and then cutting out again. it also seems as though when this is happening, the off button does not work immediately and takes a few seconds to respond. looking through the cars history, in april last year the previous owner seemed to hve the same problem and was documented that mercedes sent the unit away. any ideas and help would be greatly appreciated! thanks, Rob