Tesla has started a new build of FSD (Supervised) v14.3.13. Software update 2026.38.5.12 began reaching North American cars on Tuesday, November 4, according to Not a Tesla App and the tracker Teslascope. The FSD version number is unchanged from last month’s 2026.38.5.10 and 2026.38.5.11 builds. So far the new build is showing up on U.S. cars only. Canada is not behind, though: many Canadian cars already run v14.3.13 on 2026.38.5.11.
We covered the earlier Canada rollout of v14.3.13 on updates 2026.38.5.10 and 2026.38.5.11. This post is about what changed with .5.12, what did not, and what HW4 and HW3 owners in Canada should do next.
What 2026.38.5.12 actually is
Not a Tesla App describes 2026.38.5.12 as an updated version of FSD v14.3.13 with the same release notes as the previous build. Tesla has not published a separate changelog that explains the bump from .5.11 to .5.12, so treat it as a maintenance build until owners or Tesla say otherwise.
On the cars that have received it so far, the FSD versions are unchanged:
- FSD (Supervised) v14.3.13 on AI4 / Hardware 4 (HW4) vehicles
- FSD (Supervised) v14.3 Lite on Hardware 3 (HW3) vehicles, when that branch is included
The long feature list for v14.3.13 itself is unchanged from what we already covered: upgraded reinforcement-learning training, a rewritten AI compiler and runtime that Tesla says cuts reaction time by about 20%, better low-visibility and traffic-sign understanding, calmer lane biasing and tailgating behaviour, stronger parking and emergency-vehicle responses, and intervention-free distance tracking in the Self-Driving app. Those notes are Tesla’s wording, republished by Not a Tesla App and Teslascope. Nothing in .5.12’s public notes rewrites that list.
How wide is the rollout?
Very early, and U.S. only so far. On Thursday morning, November 5, the TeslaFi firmware tracker showed about 16 installs of 2026.38.5.12, all in the United States. TeslaFi showed no Canadian installs of the new build yet. Early owner reports show it landing on Cybertrucks and Model Ys first.
Canada already has the same FSD version. TeslaFi counted 356 Canadian cars on 2026.38.5.11, out of about 4,180 Canadian cars it tracks. That build carries v14.3.13 on HW4 and v14.3 Lite on HW3. Trackers only see cars that report in, so real numbers are higher. The pattern matches .5.10 and .5.11: U.S. cars first, then a Canadian wave. If you do not see .5.12 yet, that is normal staging, not a Canada block.
What else ships in the same branch
Release notes for the 2026.38.5.x line still include features many owners already have from earlier builds, including Automatic Collision Evasion on HW4 cars with FSD, Emergency Drive Away, Set Arrival Energy in the mobile app, Dynamic Headlight Leveling on supported cars, and the usual security fixes. Automatic Collision Evasion is worth a separate look for Canadian highway drivers, especially on wet or snowy roads where some triggers may not apply.
What it means for Canadian owners
Check for the update, but do not force it. Open Controls > Software on the car, or the Tesla app. Expect 2026.38.5.12 to reach Canadian cars later. When it is offered, you can install overnight. If you are on 2026.38.5.11, you already have v14.3.13; .5.12 is a follow-up build with the same notes.
HW4 vs HW3. HW4 (AI4) Model 3, Model Y, refreshed S/X and Cybertruck owners with FSD get v14.3.13. HW3 owners get v14.3 Lite on the builds that carry it. The car tells you which FSD version you have under Controls > Software or in the Self-Driving settings.
Winter and night driving. Tesla’s own notes for v14.3.13 call out better rare and low-visibility understanding. That matters on dark Ontario highways, snow squalls and wet pavement, but it is still Supervised FSD. Keep your hands ready and your cabin camera clear of winter jackets and fogged glass.
CAD pricing does not change with this build. FSD purchase and subscription prices in Canada are set on Tesla’s site, not by a point release. This update does not add a new paid feature for cars that already have FSD.
What to do after install. Drive a familiar loop, note any new attention reminders, and check that parking and summon behaviour still match what you expect. If something feels off, reboot the screen (both scroll wheels) and report it through the in-car Service menu rather than guessing from social media.
Bottom line
2026.38.5.12 is a fresh North American build of the same FSD v14.3.13 stack, not a jump to v15. It has not reached Canada yet, but Canadian cars on 2026.38.5.11 already run v14.3.13. Check Software when you are parked, install when offered, and stay attentive on snowy roads. For the full background on how v14.3.13 reached Canada, see our earlier post on 2026.38.5.10 and 2026.38.5.11.
Got the update already, or still waiting? Tell us in our Facebook group, Tesla Model Y & 3 [Ontario, Canada]. You can also join our X community Tesla Model* [Ontario, Canada].