Tesla has bumped FSD v14.3.2 from build 2026.2.9.8 to 2026.2.9.9 and started pushing it to a much larger pool of vehicles, including Model 3 and Model Y owners who had been stuck on the v14.2 branch. The release adds two visible behaviour changes that come directly from owner feedback over the v14.3 rollout, on top of the underlying neural-network improvements already shipped in v14.3.
Navigation Disengagement Reason
The most-noted change is in the post-disengagement popup that appears whenever a driver takes over from FSD. Tesla replaced the generic "Other" category with a more specific "Navigation" option. The new label gives the AI training pipeline a cleaner signal for cases where the car chose the wrong lane, missed an exit, or routed in a way the driver disagreed with — a class of complaint that has grown louder since v14 shifted the route-planning logic.
The new menu retains the existing categories (Lane Change, Speed, Comfort, Safety) and adds Navigation as a primary option, leaving Other as a true catch-all. The change is small in code but meaningful in data quality: by separating navigation errors from undefined other-category interventions, Tesla can target route-planning regressions without the noise that previously buried the signal.
Seat Belt Behaviour Change
The second update relaxes the seat belt rule when the car is finishing a parking manoeuvre. Until now, the seat belt could only be released after the gear shifter moved to Park. With v14.3.2 build 2026.2.9.9, drivers can unbuckle before Park is engaged, while the car is still moving toward or pulling into the parking spot under FSD. The change addresses a long-standing complaint that the prior behaviour forced drivers to wait inside the cabin for the final pull-in. The driver still has to keep monitoring; the alarm and chime sequence has been adjusted accordingly.
Rollout Status
The build hit roughly 15 percent of the eligible fleet within 24 hours of release, according to Teslascope tracking. Tesla is including older Model 3 and Model Y owners on the v14.2 branch in this push, addressing the staggered-rollout complaints that followed v14.3 and v14.3.1.
| Detail | Value |
|---|---|
| FSD version | 14.3.2 |
| Firmware build | 2026.2.9.9 |
| Previous build | 2026.2.9.8 |
| Initial fleet saturation (24h) | ~15% |
| Eligible hardware | HW4 only |
| HW3 status | not eligible (V14 Lite for HW3 in roadmap) |
Europe and HW3 Owners
The v14.3.2 build remains HW4-only. European HW3 owners — a significant share of pre-Berlin Model 3 and Model Y vehicles in the region — are still waiting for the V14 Lite track that Tesla committed to during the Q1 2026 earnings call. The disengagement-menu and seat belt changes are not expected to ship to V14 Lite at launch; Tesla has indicated those features are in the v14.3.x branch rather than the v14 baseline that Lite forks from.
Update: 2026-05-03
Tesla shipped a third iteration of the post-disengagement menu in FSD v14.3.2 build 2026.2.9.10, released on May 1, 2026 (NotATeslaApp). The new menu is smaller and less visually intrusive than the version introduced in 2026.2.9.9, and a fleet-side dismiss gesture has been documented that lets drivers hide the popup without selecting a reason. The version number itself is unchanged — the build is still labelled FSD v14.3.2 — and the navigation reason and seat belt rule from the prior build remain in place; only the UI of the disengagement popup has changed in 2026.2.9.10.
Update: 2026-05-15
A previously undocumented FSD v14.3.2 behaviour came to light on 15 May 2026: when the driver ignores cabin-camera attention warnings, the car no longer simply slows to a stop in the current lane. Instead, the UI now announces "FSD (Supervised) unavailable. Pulling over soon," and the system continues to navigate — speeding up, stopping or changing lanes as needed — while it looks for a safe shoulder or kerb. Once a spot is found the screen switches to "Pulling over — Take over to drive manually," the car pulls over, activates hazards and puts itself into Park. The pull-over behaviour was already present in 2026.2.9.9 from late April but only became widely reported with a viral demonstration video circulated this week. The feature applies to HW4-only v14.3.2 vehicles; HW3 cars on the upcoming V14 Lite branch will inherit the same logic when that build ships in late June.