The National Highway Traffic Safety Administration opened Engineering Analysis EA26002 in March 2026 to examine Tesla’s camera-only Full Self-Driving system after identifying nine crashes—one fatality and two injuries—where the Vision system allegedly failed under low-visibility conditions. Approximately 3.2 million vehicles equipped with the camera-based FSD software are now subject to potential remedy orders ranging from software updates to a full hardware redesign.

Investigators found that Tesla’s reliance on neural-network processing of camera feeds allows the FSD system to lose environmental tracking in fog, sun glare and dust without timely driver warnings. Unlike rivals using LiDAR and radar redundancies, Tesla’s Vision-only architecture leaves no sensor backup, creating a significant safety blind spot if regulators deem the approach insufficient.

If the NHTSA concludes that the camera-only system fails to meet all-weather safety standards, it could mandate a recall and require Tesla to install additional sensors—such as LiDAR or radar—or alter vehicle hardware. A forced hardware retrofit across millions of cars would incur substantial costs, delay ongoing production and disrupt planned launches.

Tesla’s Unified Brain FSD software underpins not only personal vehicles but also the upcoming Cybercab robotaxi and Optimus humanoid robots. A mandate to redesign would threaten the April 2026 Cybercab ramp, challenge the economics of the broader physical AI strategy and risk undermining the company’s $1.2 trillion valuation re-rating.