I just noticed this today when I turned my key on with the hood up while changing my oil. It turns on when you turn the key on, and shuts off when you turn the key off. It’s a loud buzzing that seems to be coming from the drivers side of the engine/transmission area. I’ve never noticed it before. There’s no codes stored or engine lights on. The car runs great and doesn’t skip a beat. I drive it 110 miles a day with no issues, it currently has 289k on it. Any suggestions/pointers? I have a video of it, but it doesn’t seem as though I can upload it from my phone.