Musk says Tesla is ready to release FSD 12.4 next week
Not a Tesla App
Less than two weeks since its last FSD update, Tesla is getting ready to release FSD v12.4, with CEO Elon Musk hinting at significant improvements. The current version, 12.3.6, introduced Autopark and High Fidelity Park Assist for vehicles equipped with ultrasonic sensors in the U.S. and Canada, along with minor fixes for FSD.
Just an hour ago, Musk shed some light on Tesla's next FSD update. Through his X account, Musk teased the imminent release of v12.4, stating, "Probably start rolling out 12.4 next week." Moreover, he provided insights into the development process and the features users can expect in the upcoming 12.4 version, as well as v12.5 and v12.6.
What to Expect in FSD v12.4
Musk says that FSD 12.4 has extensive retraining of AI models that particularly focuses on refining the comfort of passengers by addressing concerns around abrupt acceleration or braking. Musk previously commented on the next versions of FSD saying that FSD v12.4 and 12.5 would be major improvements, and while v12.4 may be a major step forward, it looks like its main focus will be on being more natural and smoother.
"Probably start rolling out 12.4 next week."
FSD v12.5 and v12.6 to Handle More Complex Scenarios
Looking ahead, Tesla is already laying the groundwork for future updates according to Musk. The CEO previously stated that Tesla is constantly working on FSD updates that are three to six months ahead of what’s in production, so they have a good idea of what the software will be able to handle in the future.
Today on X, Musk said that there's ongoing testing for FSD versions 12.5 and 12.6, which involves tackling complex scenarios. Musk says this includes navigating narrow, one-way roads and handling unexpected road closures, requiring the vehicle to reverse and find alternate routes.
Actually Smart Summon in v12.5?
Tesla’s Autopilot lead, Ashok Elluswamy, previously talked about how FSD would gain the ability to go in reverse when Tesla is ready to release Actually Smart Summon. If the ability to reverse is still tied to some of the abilities of Actually Smart Summon, then, it’s possible we may see Tesla’s better summon implementation in version 12.5 or 12.6.
Vehicles to be Able to Communicate with Fleet
Musk also gives us some insight into vehicle communication, saying vehicles will need to be able to communicate with the fleet so that you "don't get a whole bunch of Teslas stuck down a road."
Instead of vehicle-to-vehicle communication, Tesla will likely have vehicles report back to the "mothership," where Tesla can aggregate data and report it to nearby vehicles. This is similar to how vehicles report traffic today, instead of talking directly to each other.
Spending on AI
Tesla's commitment to advancing its AI capabilities is evident through its substantial investments. Musk recently emphasized the company's dedication to spending around $10 billion throughout 2024 on training and inference AI. Musk said that any company that isn’t spending billions on AI this year just won’t be able to compete.
Expansion of FSD
Tesla appears ready to start the expansion of FSD, and it looks like China may be up first. Musk's recent visit to Beijing to discuss a potential FSD rollout and data sharing shows that Tesla is ready and serious about FSD's expansion.
While FSD's rollout in China appears promising, Musk remains cautiously optimistic about expanding into other markets. He believes that FSD v12 is ready for supervised FSD in left-hand drive (LHD) countries, while right-hand drive (RHD) markets like the UK and Australia may require additional time.
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Tesla has released software update 2025.2.6, and while minor updates typically focus on bug fixes, this one introduces a major new feature. With this update, Tesla has activated the in-cabin radar, a sensor that has been included in some vehicles for more than three years but remained unused until now.
Why Not Vision?
Unlike vision-based systems, radar can precisely measure object dimensions and even detect movement behind obstacles by bouncing radio waves off surrounding surfaces. This allows for more accurate and reliable measurements of objects that vision may not even be able to see, such as behind the front seats.
What Tesla Announced
Tesla recently highlighted the 4D radar in the new Model Y, explaining how it will improve passenger safety. Tesla executives stated that the radar would be used to properly classify passengers and improve the way airbags deploy.
Tesla went on to say that in a future update, Tesla will use the in-cabin radar to detect any potential passengers left in the vehicles. Since radar can even pick up on heartbeat and breathing patterns, it can provide a much more accurate method of detecting children left in a vehicle. Tesla talked about how the vehicle will send owners a notification via the Tesla app and enable the HVAC system if it detects a passenger in the vehicle. It’ll even call emergency services if needed.
New Feature in Update 2025.2.6
Tesla has officially named this feature in update 2025.2.6, “First-Row Cabin Sensing Update,” which appears to align with the first portion of what Tesla discussed in the new Model Y video.
In the release notes, Tesla describes the update as:
“The first-row cabin sensing system has been updated to use cabin radar, which is now standard in all new 2025 Model Ys. Your Model Y was built pre-equipped with the necessary hardware, allowing Tesla to also bring this technology to your vehicle.”
For now, it appears that Tesla is using the radar to detect and classify passengers in the front seats. This could eventually replace traditional seat sensors, reducing the number of hardware components and lowering production costs.
Tesla plans to expand the feature later this year, bringing rear-seat passenger detection in Q3 2025. While Tesla talked about the feature for the new Model Y, we expect it to be available for all vehicles with the in-cabin radar.
Supported Models
Although Tesla is vague in their release notes, this feature is being added to all Model Ys that include a cabin radar. Tesla started including the cabin radar in 2022, but its availability may vary by region and model. The Model 3 didn’t receive the cabin radar until it was redesigned in 2024, while all Cybertrucks already include it.
The owner’s manual for the redesigned Model S and Model X doesn’t specifically mention the interior radar, although Greentheonly believes the vehicles also include one, so we’ll have to wait to determine whether those vehicles also receive this new feature.
At this time, the feature appears to be only going out to Model Y vehicles, but we expect it to become available on other supported models soon.
We love to see these kinds of updates. Tesla is increasing the safety of existing and new vehicles through a software update while also making them more affordable to own.
Tesla has updated the Tesla app to version 4.42.0, and this time, it’s more than just bug fixes. The app includes a new service interface, introduces support for the new Model Y, and, for the first time, includes some code for the Robotaxi coming later this year.
This update was released for iOS and should be available on Android within a few days.
Refreshed Model Y 3D Model
First up in the update is the introduction of the 3D model for the refreshed Model Y. Interestingly, while we all know it as Juniper, the file code name inside the update lists the vehicle as “Bayberry.” The Bayberry name was introduced in Tesla app update 4.41.5. Tesla’s internal code names sometimes change as the vehicle evolves - and we’ll continue to refer to it as the refreshed or new Model Y for ease of understanding.
A rear-angle shot of the Refreshed Model Y from the Tesla App
@olympusdev_ on X
As usual with Tesla’s 3D models in the app, there’s a lot of detail, although it’s not easy to see since you can pinch and zoom the model in the app. The 3D models used in the app are actually the same models that Tesla uses in the vehicle, although sometimes they include different lighting effects, but they’re all highly detailed.
Robotaxi API
Tesla has added a new endpoint in their app for Robotaxi - and it’s the very first Robotaxi or Cybercab-related item we’ve seen in the app. With the Robotaxi fleet launching in June, according to Tesla, it looks like they’re now adding support to the Tesla app.
What the Robotaxi interface is supposed to look like in the future.
Not a Tesla App
The new app API is called “rides_feedback_upload,” which seems pretty explanatory. Tesla will need to gather a lot of information on ride quality and all the little things in between. What better way than to get feedback directly from users?
While Tesla previously released prototype images of what the Robotaxi app will look like, the introduction of this API into the Tesla app leads us to believe that Tesla will utilize the current app for Robotaxi use.
Updated Service Interface
The Updated Service Panel in the Tesla App
Not a Tesla App
Tesla has released an updated UI for the Tesla Service panel, and we have a ton of details on these changes. This new pane displays appointment details more prominently. If you have a service appointment scheduled, you’ll now see a lot more details on the main service screen. The app will now display:
Your current service status
Appointment date and time, which you can now tap on to add the event to your calendar
Address and hours of the service center. You can now also tap on the address to open up the location in your maps app
There’s also a new appointment details screen (the right portion of the image). This screen displays additional details that were previously unavailable, such as your transport type. The app will display whether you’ll get a loaner vehicle, demo vehicle, or something else.
There are a ton of user experience (UX) improvements in this update regarding service, including clearer language, improved UI fixes to images, and more.
Tesla has been making a lot of positive updates to the Service-related sections of the app lately, and we’re happy to see these coming rapid-fire. Tesla Service is now easier to use and understand. In the previous app update, Tesla also added the ability to pull down to update the service screens.