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Fault diagnosis, fault symptoms

📄 Fault diagnosis for cars equipped with navigation system

📄 No diagnostics communication

📄 No sound. The SID unit displays audio information.

📄 A click is heard from the speakers when the audio system is switched off

📄 Poor radio reception

📄 Bad radio reception on FM when electrically heated rear window is on (even noise level) (4D)

📄 No sound from one of the speakers

📄 No sound on one or both channels of the CD changer. The SID displays CD changer information.

📄 CD changer theft protection faulty