Tesla has begun rolling out version 14.3.9 of its Full Self-Driving (FSD) Supervised software, adding a safety mode that activates the system without driver input when a collision is imminent and automatic emergency braking (AEB) may be insufficient. The update also enables automatic engagement when a driver is detected as heavily distracted or has accidentally disengaged the system.

The collision feature activates when the system assesses AEB alone as insufficient. FSD Supervised has until now required active driver oversight; this version adds a mode in which the system can initiate without driver input under defined safety conditions.

The distraction and accidental-disengagement triggers extend the same principle: FSD Supervised can now re-engage on a driver’s behalf when inattention or an unintended deactivation is detected. Together, the three scenarios form what Tesla describes as a new active safety feature set.

In a post on X, Tesla said: “FSD Supervised v14.3.9 starting to roll out shortly. This release includes a new active safety feature set: FSD Supervised can now activate on your behalf when an imminent collision is detected and Automatic Emergency Braking (AEB) may not be enough. It may also engage if we detect you’re heavily distracted or have accidentally disengaged FSD.”

Source: Tesla