Tesla FSD 14.3.9 Adds 'Automatic Collision Evasion' — Even When You're Driving

Tesla says FSD Supervised v14.3.9 is rolling out soon, and it brings one headline feature that matters even if you rarely turn FSD on: Automatic Collision Evasion. When your car decides that Automatic Emergency Braking alone may not prevent an imminent crash, FSD can step in and take over steering, braking, and acceleration to attempt an evasive maneuver — while you're driving manually.

That's a meaningful shift. Until now, this kind of swerve-to-safety intervention was something FSD did while it was already active. Version 14.3.9 extends it to emergencies that happen when your hands are on the wheel and the system is off.

What Automatic Collision Evasion Actually Does

According to Tesla, the feature activates under two main scenarios while FSD is off:

• An imminent frontal collision where braking alone is unlikely to stop the car in time.
• Severe driver inattention, or when the vehicle believes FSD was disengaged unintentionally.

In the frontal-collision case, certain conditions have to be met first — such as traveling on a divided road at under 85 mph. If they are, the car takes over braking, accelerating, and steering, and may steer into another lane or onto the shoulder to get you out of the way.

How Your Pedals and Wheel Behave Mid-Maneuver

This is the part worth committing to memory before the update lands, because the controls don't work the way you'd expect:

• Accelerator pedal: no effect while FSD is taking over.
• Brake pedal: increases deceleration, but does not cancel the maneuver.
• Steering wheel: the only way out. Strong counterforce on the wheel cancels the evasive action and returns control to you.

Tesla is clear that this is a last-resort safety function and does not replace an attentive driver.

When You'll Get It

FSD v14.3.9 ships as update 2027.5 and follows v14.3.8 in North America. Tesla employees are already testing the build, with early access testers potentially next in line — reportedly as soon as this past weekend. Automatic Collision Evasion is the main new addition, though the long-rumored pothole avoidance feature could ride along too.

What This Means for Your Setup

Features like this lean hard on cameras and sensors having a clean view of the world, which is a good reminder to keep the practical stuff in order. A few things worth checking before the update arrives:

• Camera clarity: keep pillar and front camera areas clean — grime, road salt, and film degrade what the system sees.
• Dash and interior cams: if an evasive maneuver ever triggers, footage is the record of what happened. Make sure your USB drive or Sentry storage is healthy and has space.
• Cabin security: a sudden lane change or shoulder maneuver means loose items in the cabin become projectiles. Trunk organizers, seat-back storage, and secured phone mounts genuinely matter here.
• Roadside readiness: if you do end up on the shoulder, a compact safety kit — reflective triangles, a vest, a tire inflator, and jumper or charging gear — turns a bad moment into a manageable one.

Automatic Collision Evasion is the kind of update that most owners will hopefully never notice working. But knowing that only firm steering input cancels it, and that your accelerator goes quiet mid-maneuver, is the difference between fighting the car and letting it finish the job.