I have this in for no audio sound with stereo or reverse bleeps or warning noise of any description I have scanned and cleared all codes no faults stored in amplifier only 1 fault stored in ZGM gateway control module 801c20 central fault memory full-no control unit fault. I don't think this is related to my sound issue but I thought I might ask if anyone knows what this may affect on this car? My amplifier is Top Hi Fi 6512 9248552 I believe there is an issue with these failing as it is over £1000 new and difficult to find a used unit. I tested all speakers with autel maxisys scanner. All I can see in live data is amp internal temp 40-50oC I stripped it down with the intent to repair but so far can't find any failed components. I have repaired some amplifiers in the past and generally the killer KV they can push out usually leaves obvious signs of failure. I just wondered if anyone had any experience of complete audio failure in any BMW? ![shake]( "shake")
