VCDS error message B1062 “Interruption Low-Sound Speakers”

Hello, hello together, already for months, even years (everything with guarantee) “I hunt down the possible cause for the sporadically repeated VCDS occuring message as attached. Although the service confirmed this message by its own diagnostic system, SEAT expects me to prove that the error actually exists, e.g. through a video. Well, not quite so easy – the failure of the speaker (in my case) in the passenger door at all is noticeable, I find it difficult In fact, I have only once really noticed the failure – but if you only listen to the radio, it is hardly noticeable if the re. channel fails. Due to the VCDS timestamp, I could limit it retroactively so far that it only occurs if I opened the passenger door before or after the ride, e.g. when loading (I usually drive alone). The last (today) reading makes me particularly ponder! This time the Error entry was generated when the passenger door was opened/closed by my wife only for loading the handbag, only 30 minutes later or 2-3 hours earlier. That means, the error was generated, although the radio did not run at all. This leads me to the thought that the cause of the message is not necessarily caused by a interruption and is only a misinterpretation of the STG. If the service had not already this entry itself On the other hand, the error occurred for the first time after 1-2 years, so it wasn’t always there. Does anyone have any idea how to go about it here? On the web, they couldn’t find a comparable case.