concerningmVC 602 radio. proceed as follows I have used my own numbers here, subsVOLVO RADIO CODE 5063
5063
COD enter I, 0 appears, press > to 5
enter 1, 0 appears
enter 1, 0 appears, press > to 6
enter 1, 0 appears, press > to 3
enter 1
titute your own
this works for me, but if you don't know the code there are services who can find it from your radio s/w