Tesla rolled out Full Self-Driving (Supervised) V14.2.1 (2025.38.9.6) over the Thanksgiving holiday, reaching AI4 vehicles and Cybertruck owners in the United States. The update landed only about a week after V14.2 and signals another step toward broader deployment of the V14 series software.
Owners first reported the new build, tagged as 2025.38.9.6, on Thanksgiving Day through posts on X, including drivers of Cybertruck and other AI4-equipped models. The quick follow‑up to V14.2 reflects Tesla’s current pace of point releases aimed at tuning behavior before a wider fleet push. Elon Musk has previously said the V14.2 line is intended for “widespread use,” so this small revision is seen as part of that preparation.
Key change in driver monitoring
Release notes for FSD V14.2.1 add a short but important line about driver supervision:
“Camera visibility can lead to increased attention monitoring sensitivity.”
This ties attention enforcement more directly to the cabin and front camera condition, so poor visibility may cause the system to tighten how strictly it checks that drivers stay attentive. Owners and testers expect to see how often extra alerts appear as more drive videos from the new build come out.
Technical updates from the v14 series
FSD V14.2.1 builds on a larger technical shift that arrived with the V14 series rather than introducing a long list of brand‑new features. Earlier V14.2 notes highlight an upgraded neural network vision encoder that uses higher‑resolution features to better detect emergency vehicles, road obstacles, and human gestures in complex scenes. The broader V14 line has been framed as a major step after V12, with a much larger end‑to‑end model intended to produce smoother and more human‑like driving across both city and highway routes.
Alongside the core vision changes, the FSD V14 branch brings several smaller functional updates that carry into V14.2.1. These include new arrival options so the car can more intelligently choose where to stop near a destination and revised speed profiles to let drivers choose more cautious or more assertive behavior within the system’s limits. The release notes for 2025.38.9.6 also reference systems that monitor residue on the interior windshield and automatic narrow‑field washing features to support camera visibility, which ties back to the new attention‑sensitivity line.
The update is currently reported on AI4 hardware vehicles, including the Cybertruck, 2026 Model Y, and other recent models built with Tesla’s latest computer. Owners tracking software statistics see FSD V14.2.1 spreading through this newer subset of the fleet, while a large number of HW3 vehicles remain on earlier FSD branches for now. This hardware gap has been a point of interest for owners, since V14’s larger model demands more compute and may require further optimization before a broader HW3 rollout.
Version 2025.38.9.6 FSD (Supervised) v14.2.1 release notes
Full Self-Driving (Supervised) v14.2.1 includes:
- Upgraded the neural network vision encoder, leveraging higher resolution features to further improve scenarios like handling emergency vehicles, obstacles on the road, and human gestures.
- Added Arrival Options for you to select where FSD should park: in a Parking Lot, on the Street, in a Driveway, in a Parking Garage, or at the Curbside.
- Added handling to pull over or yield for emergency vehicles (e.g. police cars, fire trucks, ambulances).
- Added navigation and routing into the vision-based neural network for real-time handling of blocked roads and detours.
- Added additional Speed Profile to further customize driving style preference.
- Improved handling for static and dynamic gates.
- Improved offsetting for road debris (e.g. tires, tree branches, boxes).
- Improve handling of several scenarios including: unprotected turns, lane changes, vehicle cut-ins, and school busses.
- Improved FSD’s ability to manage system faults and recover smoothly from degraded operation for enhanced reliability.
- Added alerting for residue build-up on interior windshield that may impact front camera visibility. If affected, visit Service for cleaning!
- Camera visibility can lead to increased attention monitoring sensitivity.
Upcoming Improvements:
- Overall smoothness and sentience.
- Parking spot selection and parking quality.
You may also like to read:
- Tesla launches free 30‑day FSD v14 trial »
- Musk says: “14.2 for widespread use” on new FSD release »
- Tesla’s hidden code points to unsupervised FSD rollout »
- Musk calls upcoming FSD v14.3 the “Last Piece” for self-driving »
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