Hi,
Sorry for delay but since I still didnt figure out how to reproduce the problem when I want, I had to wait until it happened and then record itd.
Here is the video with the issue
As you can hear the sound is distorted and very loud even if the volume settings are set to low.
I can say for sure that it has nothing to do with how long the car/radio was working. Once it happened when I just stopped at the shop and get back in the gar after 5min. Second time it happened when I turned the car on after it was parked in garage for 2 days.
Only thing that helps is turning the car off, locking it and leaving it like that for some time ( cant say for how long).
Let me know if you would have problem accessing the vide on the links above and Ill upload them to some other service.