karzeer Posted January 5, 2011 Report Share Posted January 5, 2011 i had to change my M3 2007 battery as it died now the radio will not turn on a it was inbuilt with am fm and cd player i checked the fuse which has not been blown. what could be the issue Link to comment Share on other sites More sharing options...
mazman Posted January 6, 2011 Report Share Posted January 6, 2011 You might need to punch the security code for Music system after battery change. Have u tried that? Link to comment Share on other sites More sharing options...
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