First Videos of Tesla FSD Beta v11.3 [video]

The visualizations in FSD Beta v11.3

@winnersechelon

Like thousands of other Twitter users, we spent a lot of last night cruising around with @winnersechelon, who also goes by Tesla Bull. The Twitter user shared five videos of Tesla's latest FSD Beta version 11.3. It gave viewers our firsthand look at the highly anticipated software that Elon Musk has been promising for months, and it appears to be worth the wait. Tesla Bull tweeted:

"FSD beta 11.3 UNIFIED STACK!! Let's go!!! Great work team Tesla."

Striking Visual Changes

The videos show some undeniable changes from the previous FSD versions. The blue line showing the car's path is noticeably thicker, taking up the width of the vehicle. Also, the red lines are gone, replaced with light grey lines similar to those we see with standard Autopilot. New visualization appears at intersections and around crosswalks, according to Tesla Bull.

Smooth Drive

Then there is the drive. While this is difficult to judge, Tesla Bull tweeted:

Noticeably smoother in certain areas where timid previously. Still, a long way to go and many more miles to test.

Sharing real unfiltered progress is exciting. There was one driver intervention that caused another new addition to FSD. A message appears stating: Autopilot Disengaged. What Happened? Press voice button to send Tesla an anonymous message describing your experience.

We got from city streets to the highway, and Tesla Bull reported that he did make several manual speed changes. Still, it's unclear if the changes were necessary, as he also stated that one of the speed adjustments was to catch another Tesla. The software is put through all the paces as it also exits the highway effortlessly and returns to city streets. The car takes the on and off ramps much more naturally, and cornering and acceleration appear confident.

It was a big test to see the Tesla go from city streets to highways and vice versa. That is a significant change with this update that combines city streets and highways into a single stack, meaning the same Neural Nets are being used in all situations, as promised by the Autopilot team on A.I. Day 2022.

Intersection View

Light mode#FSDBeta #FSDBetaV11 pic.twitter.com/ZrUDvOcyiM

— TeslaBull (@Winnersechelon) February 21, 2023

Something is Missing, Something Stays the Same

Tesla Bull claims that "auto park" is active again. He later provides a video showing Auto Park in action. It's important to note that he has a 2020 Tesla that has ultrasonic sensors, so this is not the new Auto Park for vehicles without the sensors. Actual Smart Summon (ASS) also does not appear to be in this release. That said, it has been on the radar for several months. Unfortunately, the nag continues to nag. While Musk had hoped to remove the reminder to apply resistant to the wheel, transportation officials in both the United States and Canada raised concerns.

Auto Park Video

Autopark#FSDBeta #FSDBetaV11 pic.twitter.com/5OCMvd1ZuU

— TeslaBull (@Winnersechelon) February 21, 2023

FSD v11.3 is nearing public release. Musk said that version 11.3.2. would "likely" be the one that goes to the thousands of FSD owners in North America. That means the version Tesla Bull took for a ride stills requires work before the Tesla team can send it out wide. Tesla Bull agrees, he tweeted: Smooth indeed. Will share more videos with full transparency. Could be three steps forward and two back but this will be solved. You're doing it Tesla. You're leading and it matters!

FSD Beta 11.3 in Action

PT 2 Highway to streets #FSDBeta #FSDBetaV11

Also, autopark active again
More videos to come pic.twitter.com/V8Gd2YcoYO

— TeslaBull (@Winnersechelon) February 21, 2023

Streets to Highway PT. 1
One intervention (accelerator press, right before highway entrance)
Multiple manual speed changes
Last one to catch a fellow @Tesla ?

Exiting from highway to streets to follow#FSDBeta #FSDBetaV11 pic.twitter.com/08v7CUiOM7

— TeslaBull (@Winnersechelon) February 21, 2023

Tesla LFP Batteries Can Now Be Warmed up While Supercharging Using Innovative Feature

Not a Tesla App

Tesla’s been on a roll with Supercharger improvements lately, from the 325kW charging update for the Cybertruck, to 500kW with V4 Superchargers coming next year. While those improvements have been limited to the Cybertruck, Tesla didn’t put all their focus on their new flagship vehicle, but looked at their more affordable vehicles as well.

LFP Battery Heating

Tesla’s Superchargers can now heat LFP Batteries - those that are in the Model 3 and Model Y Rear Wheel Drive variants. This applies to Long Range and Standard Range models, which saw a limited run. This is another update included as part of the 2024 Tesla Holiday Update - which really arrived with a lot of unannounced new features and capabilities.

The change is pretty interesting - Superchargers of the V3 and V4 variety can now pre-heat batteries for Model 3 and Model Y vehicles equipped with LFP battery packs. That means those vehicles are able to get back on the road faster when it's extremely cold. Of course, Tesla still advises you to precondition before you arrive, saving drivers time and money.

Max de Zegher, Tesla’s Director of Charging, also commented on the new feature. Essentially, Tesla is inducing an AC (alternating) ripple current through the battery to warm it up. Keep in mind that Superchargers are DC charging. That means it is possible to get a cold-soaked LFP vehicle on the road 4x faster than before, assuming that it didn’t precondition at all and that it is in the worst-case scenario (below 0ºF).

In essence, Tesla is using some engineering magic to turn the circuits inside the LFP battery into an electric heater - and powering that heater through the Supercharger. An AC ripple current is a small oscillation in the DC charging current that generates heat through electrical resistance, warming up the battery. Those ripples are a byproduct of converting AC to DC and back - so Tesla is using the onboard charger to induce those ripples to warm up the battery. Definitely an innovative technique that’s really only possible with the versatility of the NACS connector.

We’re hoping Tesla can implement this across their full lineup of vehicles, but we’ll have to wait and see how it is trialed across LFP vehicles first and if it is even possible on vehicles with 2170 or 4680 battery packs.

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Tesla Included FSD V12.6.1 and V13.2.4 in the Same Update: What Caused This and What It Means

Not a Tesla App

Tesla launched two FSD updates simultaneously on Saturday night, and what’s most interesting is that they arrived on the same software version. We’ll dig into that a little later, but for now, there’s good news for everyone. For Hardware 3 owners, FSD V12.6.1 is launching to all vehicles, including the Model 3 and Model Y. For AI4 owners, FSD V13.2.4 is launching, starting with the Cybertruck.

FSD V13.2.4

A new V13 build is now rolling out to the Cybertruck and is expected to arrive for the rest of the AI4 fleet soon. However, this build seems to be focused on bug fixes. There are no changes to the release notes for the Cybertruck with this release, and it’s unlikely to feature any changes when it arrives on other vehicles.

While this update focuses on bug fixes, Tesla’s already working on bigger features for FSD V13.3, which we have already confirmed to include improvements to highway following and speed control.

FSD V12.6.1

FSD V12.6.1 builds upon V12.6, which is the latest FSD version for HW3 vehicles. While FSD V12.6 was only released for the redesigned Model S and Model X with HW3, FSD V12.6.1 is adding support for the Model 3 and Model Y.

While this is only a bug-fix release for users coming from FSD V12.6, it includes massive improvements for anyone coming from an older FSD version. Two of the biggest changes are the new end-to-end highway stack that now utilizes FSD V12 for highway driving and a redesigned controller that allows FSD to drive “V13” smooth.

It also adds speed profiles, earlier lane changes, and more. You can read our in-depth look at all the changes in FSD V12.6.

Same Update, Multiple FSD Builds

What’s interesting about this software version is that it “includes" two FSD updates, V12.6.1 for HW3 and V13.2.4 for HW4 vehicles. While this is interesting, it’s less special when you understand what’s happening under the hood.

The vehicle’s firmware and Autopilot firmware are actually completely separate. While a vehicle downloading a firmware update may look like a singular process, it’s actually performing several functions during this period. First, it downloads the vehicle’s firmware. Upon unpacking the update, it’s instructed which Autopilot/FSD firmware should be downloaded.

While the FSD firmware is separate, the vehicle can’t download any FSD update. The FSD version is hard-coded in the vehicle’s firmware that was just downloaded. This helps Tesla keep the infotainment and Autopilot firmware tightly coupled, leading to fewer issues.

What we’re seeing here is that HW3 vehicles are being told to download one FSD version, while HW4 vehicles are being told to download a different version.

While this is the first time Tesla has had two FSD versions tied to the same vehicle software version, the process hasn’t actually changed, and what we’re seeing won’t lead to faster FSD updates or the ability to download FSD separately. What we’re seeing is the direct result of the divergence of HW3 and HW4.

While HW3/4 remained basically on the same FSD version until recently, it is now necessary to deploy different versions for the two platforms. We expect this to be the norm going forward, where HW3 will be on a much different version of FSD than HW4. While each update may not include two different FSD versions going forward, we may see it occasionally, depending on which features Autopilot is dependent on.

Thanks to Greentheonly for helping us understand what happened with this release and for the insight into Tesla’s processes.

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