Apologies no doubt this has been covered several times before but I've searched to no avail. I've just bought a 2009 6 and the interior is very tired, I have cleaned it up the best I can and it certainly looking better. But the radio is very scratched, so I am looking at buying an adaptor and fitting a double din after market stereo. My question is, how do I adjust the clock setting and swap between clock and range when the buttons have gone? Any info would be much appreciated.