2005 XJ8L with nav and rear entertainment centre. Last summer, the sound for the stereo (and all other components) would stop working intermittently. In the fall, it stopped working almost completely. I took it out of storage this week, and still no sound. I took it to my indy shop for a spring service, and they were able to retrieve an Audio Control code U2602

Can anyone provide the decode please? I am getting fed up with my own singing

Many thanks