I know there are a few people that do experience this and others that don't. I have BMW investigating as I think everyone agrees it's way too loud if this is something that should occur.
It's on the turbo side. Sounds like it's coming from ECU/side of motor area, but not 100% sure.
Thing that I don't get is why it is random and will continue to occur when I open any doors/trunk/hood. Once car is started it won't occur again for some time. Very odd.
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