TL;DR
Tesla silently shipped a feature in FSD v14.3.9 that lets the car grab the steering wheel and swerve without driver input, even on vehicles whose owners have never activated Full Self-Driving.
What happened
- FSD Supervised v14.3.9 rolled out with a new feature called Automatic Collision Evasion, embedded in the release notes without prominent announcement.
- The system triggers in two scenarios: imminent frontal collision where braking alone may be insufficient, and situations where the car judges the driver is distracted or has accidentally disengaged FSD.
- Critically, the feature activates across the entire Tesla fleet, not just vehicles with FSD subscriptions or owner opt-in to autonomous driving.
- One firsthand test found the car jerked the wheel unprompted during a routine residential intersection where lanes shifted roughly one foot, a correction the driver was already making calmly.
- Reports indicate the feature ships off by default behind a consent screen, though the source notes the opt-in framing with skepticism given the fleet-wide deployment.
Why it matters
- Steering intervention is a qualitative leap beyond automatic emergency braking: it adds a second axis of evasion, potentially resolving crash scenarios where a swerve beats a stop.
- The false-positive problem is not theoretical: phantom braking on Autopilot has been a documented, years-long complaint, and phantom swerves have appeared in FSD v14's history, making an unquantified false-positive rate for steering takeover a serious liability question.
- Tesla has published no data on unintended trigger frequency, a notable omission for a system that physically overrides driver control.
- The consent-screen opt-in, if real and enforced, is the right architecture, but the underlying question of how the car distinguishes "driver handling it" from "driver not handling it" remains unsolved and unaddressed in the release notes.
- Regulators and safety bodies tracking ADAS intervention authority will find this a live test case: who is liable when a car overrides a driver who was not actually at fault?
What to watch next
- NHTSA and EURO NCAP responses: any formal inquiry or standing investigation into unsolicited steering interventions would signal regulatory pressure is building faster than Tesla's validation cycle.
- Community false-positive rate data: owner forums and third-party FSD trackers will surface real-world trigger frequency within weeks, either validating or undermining Tesla's implicit safety claim.
- Tesla's next release notes: whether v14.4 or later includes published intervention statistics or tightened trigger thresholds will reveal how seriously the company is treating the phantom-swerve risk.
Originally published on Present of AI, a daily source-linked AI news timeline. Read the full timeline or browse the open dataset.