The contact owns a 2013 Hyundai Sonata. The contact stated that the taillights failed to illuminate as needed. The contact's father inspected the taillights, removed the taillight housings, and noticed that the taillight housings were melted. The contact stated that she had replaced the bulbs on several occasions. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was unavailable.