What changed in FSD 14.3.11 and 14.3 Lite

Two stacks on firmware 2026.33.5

Tesla started early-access downloads of firmware 2026.33.5 on October 6, 2026 Pacific. Hardware 4 vehicles get FSD (Supervised) 14.3.11. Hardware 3 Model 3 and Model Y get a new FSD 14.3 Lite card. Tracker links: FSD 14.3.11 and FSD 14.3 Lite.

Owners and databases reporting the roll include @TimDOES (Cybertruck and Model Y), @BLKMDL3 (HW3 Lite), @BLKMDL3 (14.3.11), and fsd_database. Public notes also appear on fsddb.com for 2026.33.5. Multiple early-access cars say the FSD bullets still match the prior stack. This is not a Halloween-themed changelog.

FSD 14.3.11 (HW4)

The in-car header is FSD (Supervised) v14.3.11. The bullet list still covers the reinforced-learning training stage, the vision-encoder upgrade, the MLIR rewrite Tesla says cut reaction time by about 20%, plus parking, emergency-vehicle, traffic-light, animal, and driver-monitoring items that were already on 14.3.10. We are not inventing a new stack list.

Automatic Collision Evasion stays on this HW4 build. Tesla’s wording on this firmware spells out two engage situations while you drive manually:

Automatic Collision Evasion activates Full Self-Driving (Supervised) to try to keep your vehicle safe and then continue driving. It can engage in the following situations while you are driving manually:

• Scenario 1: A frontal collision is imminent and braking alone may not avoid it.
• Scenario 2: Your vehicle detects that you are not sufficiently attentive to the road (for example, reaching toward the back seat), and that Full Self-Driving (Supervised) may have been unintentionally disengaged.

See your Owner’s Manual for more details.

That is still FSD (Supervised). Automatic Collision Evasion is an active-safety path that can bring Supervised in while you drive manually, in the situations Tesla describes above. It is not unsupervised consumer FSD. It is not a Robotaxi launch.

FSD 14.3 Lite (HW3)

14.3 Lite is a new tracker card, not a rename of 14.2 Lite. Firmware is the same 2026.33.5 package. Notes still open with distilled HW4 V14 intelligence into HW3, plus responsiveness, comfort, parking / unparking / reversing, Arrival Options, and Speed Profiles. Lite does not get Automatic Collision Evasion on this roll.

Older Lite history stays on the 14.2 Lite card (firmwares 2026.27.11 / 2026.27.10 / 2026.27.6, original Sep 8 date).

Product context

This page is about FSD (Supervised) owner software. FSD Supervised can start from park, change lanes, follow navigation, and park at a destination. Robotaxi is a separate Tesla app and service. FSD Update is independent and not affiliated with Tesla, Inc.

If you are comparing versions on the road, a USB drive for Dashcam and Sentry is the usual owner setup. We link a 128GB Tesla Dashcam / Sentry USB. For non-Tesla Level 2 stations, use a J1772-to-Tesla adapter (not a Tesla-to-J1772 dongle).

Related: Tracker fsdupdate.com. Also on FSD News: What changed in FSD 14.3.10, What changed in FSD 14.2 Lite.

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