I am reporting a potential safety defect in my 2021 Tesla Model Y, currently showing 47,582 miles, involving electrical, software, and driver-assistance systems. Problems began around August 2026. By September 10, 2026, automatic high beams were malfunctioning. Diagnostic alerts dated October 15-16, 2026, indicated Autosteer unavailable and adaptive-headlight failures. Autopilot becomes unavailable, nighttime visibility is affected, and software updates repeatedly stall at approximately 50%. On October 16, 2026,...
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Service Mode showed a CRITICAL Secondary Autopilot ECU fault. Tesla Sterling subsequently identified computer reboot-loop faults and recommended approximately $2,700 in computer replacement without conclusively establishing whether software or hardware caused the failure. Tesla Tysons also reviewed vehicle logs but reported that existing faults prevented further remote diagnosis. An independent former Tesla technician indicated that typical computer failures can involve overheating or camera malfunctions. Neither symptom is present, and cameras function while parked. I am concerned that these safety-related failures may be associated with an incomplete software update. Tesla has been notified, but the root cause remains unresolved. The vehicle is available for inspection. I request that NHTSA investigate potential systemic software and Autopilot computer defects, examine similar complaints, and determine whether a safety recall or manufacturer-funded corrective action is warranted.