NHTSA Complaint #11667889 — 2023 TESLA MODEL Y

I am writing to raise a safety concern regarding the use of Tesla’s Full Self-Driving (FSD) system on my 2023 Tesla Model Y when a rear hitch-mounted bike rack is installed. Numerous users, including myself, have experienced dangerous or erratic behavior from FSD when carrying bicycles on a rear-mounted rack. Specific issues include: False detection of a trailing vehicle directly behind the car. Phantom braking or swerving, including abrupt lane changes or acceleration. Unreliable navigation at intersections (e.g., nearly running stop signs) due to apparent misinterpretation of sensor data. In some cases, tailgating or aggressive following behavior by the vehicle. These behaviors appear to stem from the FSD system misinterpreting the presence or visual signature of the rack and bikes as another vehicle. In several online reports, this has led to unsafe maneuvers. To temporarily mitigate the issue, some drivers have resorted to taping over the rear camera, which is neither safe nor user-friendly. While I recognize Tesla has made improvements such as camera obstruction warnings (e.g., in FSD v12.5.6+), these do not address the core misclassification problem. My requests: That Tesla officially acknowledge and investigate FSD misbehavior in the presence of rear-mounted bike racks. That Tesla provide clear driver guidance on whether FSD should be used when such a rack is installed. That the FSD system include an option for a “Bike Rack Mode” or alternative logic to prevent rear-camera misinterpretation. That this concern be escalated within your safety and AI development teams to ensure user safety is prioritized.