Vehicle experienced a spontaneous interior fire while parked and turned off. No collision, no injuries. Fire originated under the driver-side lower dash/kick panel near the fuse/BCM wiring, then spread into the driver door harness/trim. Exterior body and engine bay show no impact or external origin. Details: Heavy charring/melt concentrated at lower dash/junction area with upward/sideways spread along wiring paths; interior plastics, dash switches, and door wiring damaged. Vehicle was unoccupied. Aftermarket: No hardwired accessories in the origin zone. A dashcam was powered via center console USB/12V with a small battery pack (not connected to the under-dash fuse block). Status: Towed to [Dealer, City/State]; Hyundai Corporate Case #XXX opened. Insurance comprehensive fire claim opened; origin-and-cause inspection pending. Request: NHTSA investigation into potential electrical/wiring defect in driver lower dash/door-harness area on this model/year; safety risk of parked, unattended fires. Photos/videos available. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)