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Does anyone have any idea what this might be, and whether it might be related to seemingly high energy loss when parked? Approximately 1% of my 85kWh every 8 hours, energy saving ON, always connected ON.
It doesn't sound like the noise I had due to a fan inside the headlight (LED headlights) running when it wasn't supposed to. There was barely any vampire loss from my issue, but if the fan bearings were shot it could have and might have sounded more like your noise.
Take it to the service center, they will easily figure it out.