MSport - There is definitely an issue, although I’ve gone a week or so now without it happening. I have no doubt that’s just good luck.
I’d highly recommend you and everyone else make noise to BMW about this to force a fix. So far the “never heard of it before” responses we are all getting don’t cut it.
My gut is that it is a software/power management issue introduced with the 2021 models. Hard pressed to believe they have that much defective hardware.
That said, my amp is to be replaced but I have not yet gotten the call that it has arrived.
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