Electric whine / noise when the car is asleep

2018 Long range awd. Been parked since last night, when it was plugged in and charged to 80%. Its currently still plugged in and wasn't driven yet today. The garage is 45oF or so, doors are locked, sentry mode is off. My understanding is that the car should be asleep, but for some reason there's a constant noise that doesn't seem to go away. No errors in the service menus, i assume this behavior is normal.