On [XXX], while operating my 2024 Tesla Model Y in Full Self-Driving (Supervised) mode, the vehicle experienced an Uncommanded Steering Input leading to a collision. The vehicle was traveling at a very low speed of approximately 5 mph in a clear, simple environment. Despite this walking pace, the FSD software failed to identify a visible concrete curb and initiated a sudden, sharp turn directly into the obstacle without any prior warning or driver input. The fact that the system executed such a violent and erroneous maneuver at 5 mph indicates a fundamental failure in the Neural Network's object detection and path planning logic. If this logic failure had occurred at higher speeds or near pedestrians, the results could have been catastrophic. The local Tesla Service Center (Watertown, MA) refused to conduct a physical inspection or a log review of the steering torque. They issued a Repair Estimate of $1,217.26 while claiming 'no hardware fault codes' were present, thus ignoring the documented software malfunction. As a leaseholder of this vehicle with only 15,489 miles, I am reporting this as a significant safety defect that the manufacturer refuses to investigate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)