Tesla has just released FSD Beta 11.4.2 to its employees with update version 2023.7.10. This update focuses on bug fixes as Tesla aims to release it to FSD owners.
FSD Beta 11.4.1 started going out to early testers, but the rollout was soon stopped. About 4% of FSD testers currently have access to that beta.
FSD Beta 11.4.2 was expected last week when Elon Musk announced it would start rolling out over the weekend, however, we're glad to see that it's now in employee hands.
What's New
In Musk's tweet last week, he revealed that this update will address small bugs around 'excess conservatism', focusing on improvements around narrow roads and lane changes.
However, since most Tesla owners with access to FSD Beta are still on version 11.3.6, this update will be a much bigger deal.
Not only will it contain the significant changes from FSD Beta 11.4, but also the many improvements Tesla added in FSD Beta 11.4.1, as well as non-FSD features that were introduced in updates 2023.2 and 2023.6.
Major FSD Improvements Included
The most recent FSD Beta, 11.4.1 included improvements in turning and overall smoothness of the vehicle by better determining the environment around the vehicle.
It also made improvements in assertiveness when encountering nearby pedestrians or vehicles in its path, which can lead to sudden braking or jerkiness. The vehicle will now measure the probability of interacting with the vehicle or pedestrian instead of coming to a sudden halt.
Other refinements include several improvements to lane changes and when to take them, as well as a better understanding of bus lanes and when to use them.
Improved Speed Control
One of the biggest improvements in this beta involves speed control. When in Autopilot, the vehicle will typically use the speed limit of the road plus the percentage offset that you have set. However, as we know, the speed limit is only one factor that should be considered when determining your speed. Autopilot will now smartly adapt its speed based on weather conditions and the type of road it's on. For example, the vehicle will travel slower in parking lots, dirt roads, or in residential areas.
Release Date
When Tesla employees receive an FSD update, it indicates that we may see a public release, however, a lot of it is dependent on what issues are discovered.
Since FSD Beta 11.4.2 is a minor revision to the partially released beta 11.4.1, there is a much higher likelihood we could see this beta go into a wide release. Tesla last released FSD Beta 11.3.6 in the second week of April.
New Non-FSD Features
In addition to this update incorporating all the enhancements from FSD Beta versions 11.4 (release notes) and 11.4.1 (release notes), FSD Beta 11.4.2 also introduces several new non-FSD features that were previously available in updates 2023.2 and 2023.6.
These features include auto steering wheel heat (just in time for summer!), support for the Icelandic language, Tesla's Manual app, improvements to Apple Music, and changes to Sentry Mode lighting.
This FSD Beta update will be a major update for owners with access to FSD, not only bringing massive FSD improvements but also bringing them up to speed with some of the latest Tesla features.
Update: Musk has just tweeted that this release may be the one that goes to a wide release. Here's hoping! Keep your fingers crossed everyone, and keep checking that app for an update.
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.
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.
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.
