Tesla FSD V12.5 Now Supports Additional Models; Hardware 3 Vehicles Still Waiting

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Tesla pushed FSD V12.5 with update 2024.20.10 to additional vehicles last night. For the first time, FSD v12.5 also went out to additional Tesla models, however, it’s still limited to hardware 4 vehicles.

Support for FSD V12.5

FSD V12.5 is only available to vehicles with hardware 4 vehicles, or as Tesla is now calling the hardware, AI4. Before yesterday the update was limited to just Model Y vehicles on HW4, but Tesla quickly expanded it to all vehicles besides the Cybertruck and Semi, which has yet to see any Autopilot features.

Musk commented on X that he wanted to focus on improving the software on specific hardware before expanding it to additional hardware and vehicles.

FSD v12.5 has a 5X increase in operating parameters. This is a large increase and Musk said that it currently won’t be able to run on hardware 3 until the code is optimized.

We are focusing on just Model Y with HW4 for the initial release. Make sure that works well, then broaden.

This has the 5X increase in parameters.

HW3 would run the same parameter count, but requires extra work to optimize the code.

— Elon Musk (@elonmusk) July 23, 2024

Ashok Elluswamy, Head of AP at Tesla, also mentioned that the focus for V12.5 was on both safety and smoothness for this release. His personal test – not spilling an open cup of coffee while on FSD. On V12.5, Ashok made it 30 minutes without spilling coffee. This is good news, as the smoother and safer FSD gets, the more natural it feels for the driver and occupants in other vehicles.

HW4/AI4

Following all this up is a recent post on X from Elon mentioning that Hardware 4 will now be renamed to AI 4. Tesla is already training the HW4 computers in a loop with Nvidia GPUs, at a 1:2 ratio. This is surprising news, as Musk previously mentioned that training for Hardware 4/AI4 would only begin after the new Supercomputer cluster was finished.

It's good to see that training is already underway for AI4, but this also means we’re hitting the limits of Hardware 3 pretty fast. It has been mentioned that there will be a drastic hardware divergence in the future between Hardware 3 and AI4, but we weren’t expecting that until later this year.

This means that updates may get better, as Tesla’s AI4 is approximately 4-5x better in terms of resolution and fidelity than hardware 3, and hardware 4.0 is about 3-5x faster and more powerful in inference capabilities. 

AI5

With AI5 scheduled 18 months away, including a 10x inferencing improvement, we’re wondering what the future of Hardware 3 and AI4 will look like within the next 3 to 5 years. Cars are long-time purchases for many people, and we’re hoping that Tesla continues to do their best work to optimize code wherever possible to continue supporting Hardware 3.

Tesla has specifically come out and said it doesn’t plan to support a retrofit from Hardware 3 to Hardware 4, likely due to the differing locations of electrical and coolant connections, as well as the form factor of the compute units themselves.

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Is Tesla Planning to Add Steam Support to All Vehicles?

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Yesterday, we reported that Tesla updated their Steam integration on Model S and Model X vehicles. The update was part of their 2024 Holiday Update, but it looks like there may be more to this than a simple update.

Steam, a video game library app, makes it easy for users to buy or launch games on their computers. However, a couple of years ago, Valve, who created Steam, launched their own standalone device, the Steam Deck. The Steam Deck runs a custom OS based on Linux.

Steam Launch

When Tesla launched the redesigned Model S and Model X, Tesla introduced a dedicated gaming GPU with 16GB of RAM and touted the ability to play top-tier PC games in Tesla vehicles.

In 2022, Tesla finally launched the Steam app for the Model S and Model X as part of its 2022 Holiday Update. The Steam app runs Steam OS, the same OS as the Steam Deck in a virtual environment.

However, earlier this year, Tesla stopped including the GPU and Steam (Beta) in their vehicles, and we haven’t seen any updates to the Steam in quite some time. In fact, we thought Tesla was axing their gaming-on-the-go dreams.

SteamOS Update

The Steam app, which is still in Beta, is getting an interesting update for the Model S and Model X vehicles with the discrete GPU.

Those vehicles received an update to SteamOS 3.6 - the same version of SteamOS that runs on the Steam Deck. While nothing has visually changed, there’s a long list of performance optimizations under the hood to get things running smoother.

Comparing Steam Deck to Tesla Vehicles

Let’s take a look at the Steam Deck - according to Valve, its onboard Zen4 CPU and GPU combined push a total of 2 TFlops of data, which is fairly respectable, but much lower than today’s home consoles. The Steam Deck is capable of 720p gaming fairly seamlessly on low-to-medium settings on the go and is also built on the AMD platform.

AMD-equipped Teslas, including the Model 3 and Model Y, are packing an older Zen+ (Zen 1.5) APU (processor with a combined CPU and GPU). AMD claims that the V1000 - the same embedded chip as on AMD Tesla vehicles (YE1807C3T4MFB), brings up to 3.6 TFLops of processing power with it, including 4K encoding and decoding with the integrated GPU on board.

While that’s not enough for 4K gaming or comparable to a full-blown console or desktop GPU, that’s enough raw horsepower for light gaming and is currently more powerful than the Steam Deck.

The Model S and Model X’s GPU brings that up to about 10TFlops of power - comparable to modern consoles like the Xbox Series X at 12 TFlops.

Steam Gaming for All Vehicles?

The fact that Tesla is updating SteamOS even though the feature is no longer available in any new vehicles could indicate that Tesla is not only bringing Steam back to Teslas but that it’s going to play a much bigger role.

While SteamOS is run in a virtual environment on top of Tesla’s own OS, we could see Tesla bring SteamOS to all of its current vehicles, including the Model 3, Model Y, and Cybertruck. Steam in these vehicles would likely support any game that’s capable of running on the Steam Deck.

We think this Steam update, which includes performance improvements and a variety of fixes, has quietly passed under most people’s radars. This could be a very exciting update for those who enjoy gaming, especially for those who love to do it in their Tesla.

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Tesla Holiday Update Weather Features: All the Small Details

Robert Rosenfeld / YouTube

As part of Tesla’s 2024 Holiday Update, Tesla included two awesome new features - Weather at Destination and the long-awaited Weather Radar Overlay. These two features are big upgrades built upon the weather feature that was added in update 2024.26. The original weather feature added an hourly forecast, as well as the chance of precipitation, UV index, Air Quality Index, and other data.

However, this update also added some smaller weather touches, such as the vehicle alerting you if the weather at the destination will be drastically different from the current weather.

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Weather At Destination

When you’re navigating to a destination and viewing the full navigation direction list, the text under the arrival time will show you the expected weather next to your destination. You can also tap this, and the full weather pop-up will show up, showing your destination's full set of weather information.

Note the weather under the arrival time

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You can also tap the weather icon at the top of the interface at any time and tap Destination to switch between the weather at your current location and the weather at your destination.

You’re probably considering that the weather at your destination doesn’t matter when you’re three hours away - but that’s all taken into account by the trip planner. It will add in both charge time and travel time and show you the weather at your destination at your expected arrival time.

And if the weather is drastically different or inclement, such as rain or snow, while you’ve got sunshine and rainbows - the weather will be shown above the destination ETA for a few moments before it tucks itself away.

Tesla also recently introduced a new voice command. Asking, “What’s the weather?” or something similar will now bring up Tesla’s weather popup.

The weather pop-up above the ETA

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One limitation, though—if you’re planning a long road trip that is more than a day of driving, the weather at destination feature won’t be available until you get closer.

Weather Radar Overlay

As part of the improvements to weather, Tesla has also added a radar overlay for precipitation. You can access the new radar overlay by tapping the map and then tapping the weather icon on the right side of the map. It’ll bring up a radar overlay centered on your vehicle. It’ll animate through the radar data over the last 3 hours so that you can see the direction of the storm, but you can also pause it at any point.

You’re able to scroll around in this view and see the weather anywhere, even if you zoom out. It also works while you’re driving, although it can be a little confusing if you’re trying to pay attention to the navigation system. If you like to have Points of Interest enabled on your map, the weather overlay will hide POIs except for Charging POIs.

Requirements / Data

Unfortunately, you’ll need Premium Connectivity for any of the weather features to work, and being on WiFi or using a hotspot will not be enough to get the data to show up. The data, including the weather radar, is provided by The Weather Channel.

As for supported models, weather and weather at destination are available on all vehicles except for the 2012-2020 Model S and Model X. The weather radar has more strict requirements and requires the newer AMD Ryzen-powered infotainment center available on the 2021+ Model S and Model X and more recent Model 3 and Model Y vehicles.

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