I just purchased a 2013 Hyundai Azera last week. The first night home, I parked the car in the garage and left the key fab in the cup holder. 2 hours later, I noticed the car's hood was warm and upon opening the hood, noticed the battery and surrounding components were very warm to the touch. I left the hood up and brought the key fab in the house. The car soon cooled down. 5 days later, I decided to leave the key fab in the car again to see if this was a fluke, however, after a few hours had the same "hot" results. I'm waiting now for Hyundai service department to open this morning to set up appointment. Has anyone seen anything similar or have an idea what may be causing this?