Tesla Releases FSD Beta 11.4: What's New

Tesla has released FSD Beta 11.4 to employees

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Tesla has released FSD Beta 11.4 to employees, with original testers hopefully soon to follow. The update is version 2023.6.15, making it the first time FSD Beta has been based on a 2023 branch. With this update, Tesla has prioritized refining the vehicle's performance over introducing new features.

Enhanced Safety Features: Pedestrians and Vulnerable Road Users

Some standout improvements include enhanced pedestrian recognition and response, allowing Tesla vehicles to predict pedestrian movements better and react accordingly. This leads to a smoother driving experience at intersections, as vehicles can accurately anticipate when to stop or proceed.

Another critical aspect of the update is its improved responsiveness to vulnerable road users, such as bikers and cyclists. The FSD Beta 11.4 update now reacts more quickly to these road users and adjusts the vehicle's speed when necessary, ensuring a safer experience for everyone involved.

Improved Driving Performance: Urban, Rural, and Adverse Weather Conditions

One of the most notable features of the update is its weather-adaptive speed control. The FSD Beta 11.4 adjusts the maximum Autopilot speed based on current weather conditions, considering factors such as visibility, road wetness, tire tread, and even tire spray from other vehicles, ensuring a safer driving experience in adverse conditions.

Urban drivers will appreciate the optimized turn performance in city environments, as the update enables Tesla vehicles to navigate dense areas and challenging turns more effectively. This results in smoother navigation while avoiding obstacles like parked cars and bus lanes. Additionally, the update brings advanced bus lane recognition, helping prevent the vehicle from accidentally entering restricted areas.

In rural areas, the FSD Beta 11.4 should improve, with upgraded lane, line, and road edge detection. This enhancement is beneficial when driving on roads with inconsistent markings and paving, providing a safer experience. Alongside these improvements, the update also refines lane guidance and partial cut-in predictions. By leveraging Tesla's extensive library of clips and auto-labelling system, these enhancements ensure the vehicle remains in the correct lane and accurately predicts the movement of other vehicles.

Smarter Navigation: Lane Guidance and Speed Adjustments

The FSD Beta 11.4 also considers upcoming navigation deadlines, adjusting the vehicle's speed accordingly during lane changes, resulting in refined lane change speed control. Furthermore, Tesla's new Vision Speed network allows its cars to infer the typical driving speed on any given roadway, optimizing speed control in various situations, such as residential areas and parking lots.

Finally, Tesla has enhanced long-range path blockage detection, enabling vehicles to merge into other lanes more swiftly to avoid obstacles on the road.

Who is Eligible for This Beta

With the latest FSD Beta being based on Tesla's 2023.6 code branch, this will make FSD Beta available to many new owners who are on a 2023.2 or 2023.6 update. So if you've been waiting to be eligible for FSD Beta before subscribing, you may soon get your chance. However, it may still take several weeks before this update, or a revision of it goes into wide release, so don't click that button just yet.

Release Date

Tesla will typically release an update to employees and then to OG testers before having it go out to everyone else in waves. However, if Tesla discovers a blocking issue, the rollout is halted until an update becomes available. Once a revision is available, Tesla will restart the rollout with employees again.

FSD Beta 11.3 went through various revisions before finally being available to most owners. However, that was a much larger update, so FSD Beta 11.4 will likely see fewer revisions. In the past we've typically seen 1 to 3 revisions before a major update to FSD Beta went into 'wide' release.

What happens next will depend on whether Tesla encounters any major issues. Tesla may release FSD Beta 11.4 to OG testers or it may be quiet for several days before 11.4.1 or a similar revision to FSD Beta surfaces.

FSD Beta 11.4 demonstrates Tesla's unwavering commitment to pushing the boundaries of autonomous driving technology, bringing us closer to a future where fully autonomous vehicles are the norm. Take a look at the release notes for FSD Beta 11.4 for a thorough look at all the changes in this update.

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

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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

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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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