Tesla says FSD Supervised v14.3.9 can activate if a collision is imminent and emergency braking may not be enough
Tesla says the system may also engage if it detects that the driver is heavily distracted or has accidentally disengaged FSD.
TLDR
On September 4, 2026, Tesla said FSD Supervised v14.3.9 would begin rolling out shortly. The company says the release lets the system activate on a driver's behalf when an imminent collision is detected and Automatic Emergency Braking (AEB) may not be enough. Tesla says it may also engage if it detects heavy driver distraction or an accidental FSD disengagement.
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