Stereo making calls to no one
 

I was checking the tire pressure on my '14 FR-S the other day, and I could hear a light crackling from the speakers. I had the key in the ON position to use the portable air pump. The stereo had managed to connect to my phone, which was in the house charging, about 8 yards away. It said "in a call" (or whatever the exact message is), and had been on this "call" for about 5 minutes before I noticed it.

I pressed Hang Up, which did nothing. I pressed the Power button and it didn't work either, until I held it. A few minutes later, it connected to my phone again!

The phone itself has no record of these ghost calls. Nothing.

Your car is haunted. Time to sell it or call the exorcist. 😑;)