Tesla 2026.38.4.5 FSD v14.2 Lite (AI3) Update Release Notes

FSD (Supervised) v14.2 Lite includes:

• Distilled the intelligence from HW4 V14 into HW3. This allows HW3 to directly learn how to handle scenarios using HW4 V14 as a guide. This process unlocks the improvements that have been made to HW4 including Reinforcement Learning (RL) and offline models for HW3.
• Improved both proactive and reactive responsiveness across a wide variety of categories including navigation handling, merges and forks, pedestrian interactions, traffic lights, and vehicle cut-in scenarios.
• Improved general comfort in nominal scenarios through fewer false slowdowns, smoother steering and more consistent lane centering.
• Introduced unparking and reversing capabilities.
• Introduced Speed Profiles to further customize driving style preference.

FSD (Supervised) will determine the appropriate speed based on a mix of driver profile, speed limit, and surrounding traffic.

• Driver profile has a strong impact on behavior. The more assertive the profile, the higher the max speed.
• Right scroll-wheel up/down will adjust the Speed Profile from SLOTH, CHILL, STANDARD, or HURRY.

Adjust settings like the Speed Profile directly from the Self-Driving visualization on the center display.

A button will appear on the screen when driver requirements are met. Driver requirements include (but are not limited to):

• Driver is seated in driver's seat
• Driver is buckled
• Cabin Camera is unobstructed

Brake Confirm requires the driver to press and release the brake pedal before FSD (Supervised) can be activated. When Brake Confirm is disabled, pressing the button will allow Self-Driving to apply the brakes and engage FSD (Supervised). If driver detection requirements are not met or if FSD (Supervised) does not detect a driver, you will be required to press and release the brake pedal to confirm. You can enable Brake Confirm in Self-Driving > Brake Confirm.

This feature does not make your vehicle autonomous and you must remain attentive and be ready to take over at any time. Only a licensed driver authorized to operate the vehicle should be allowed access to the driver's seat position any time the vehicle is not in Theater or Arcade modes.