The contact owned a 2025 Hyundai Tucson. The contact stated that while the vehicle was parked and turned off, the rear of the passenger seat caught fire. The vehicle was unoccupied at the time of the fire. The fire was extinguished twice by the Fire Department since the fire reignited after the first time the fire was extinguished. A fire report was filed, and a report number was provided. The cause of the failure was determined to be a lithium battery failure. A police report was also filed. The dealer was contacted. The vehicle was not diagnosed or repaired. The vehicle was destroyed. The manufacturer was made aware of the failure. The failure mileage was approximately 800.