UNKNOWN OR OTHERWhile driving home, my Tesla was operating in Full Self-Driving (FSD) mode and initially performed normally, stopping at a red light and proceeding smoothly when it turned green. Moments later, the vehicle suddenly accelerated on its own, lost control, and began spinning uncontrollably before sideswiping a parked car and coming to a stop on the wrong side of the street in oncoming traffic. I was fully awake, alert, and did not manually steer or accelerate at any point. The incident appears to have resulted from a malfunction in the vehicle’s FSD system and/or its steering and acceleration control mechanisms. There were no warning lights, error messages, or alerts before or during the event—it occurred without warning. This malfunction created an immediate safety hazard that endangered my life and posed a serious risk to other drivers, pedestrians, and surrounding property. The situation could have easily resulted in a fatal collision or injury. I promptly notified the police, and the incident was reported to Tesla Insurance, which serves as my coverage provider. Despite my repeated efforts to have the issue inspected and addressed, Tesla Insurance has refused to acknowledge fault, open a claim, or cover related damages. As a result, the malfunction has not been reproduced or confirmed by Tesla or any authorized service center. The vehicle has since been inspected by Collision Works, a Certified Tesla Collision Center in Long Beach, California (500 E. Anaheim St, Long Beach, CA 90813), which provided a preliminary repair estimate. I am currently responsible for repair costs out of pocket pending resolution with Tesla Insurance. The vehicle remains in my possession and is available for inspection by Tesla, investigators, or safety authorities upon request. The complete and unexpected failure of the FSD system to regulate acceleration and steering represents a serious safety defect that warrants immediate investigation to prevent future harm.