Tesla's Hardware 4: Unraveling the Mystery Behind the Most Advanced FSD Computer

By Kevin Armstrong
Tesla may have multiple versions of FSD hardware 4.0
Tesla may have multiple versions of FSD hardware 4.0
@GreenTheOnly/Twitter

Since its introduction, Tesla's Hardware 4 (HW4), the company's most advanced full self-driving computer, has been shrouded in mystery. Renowned Tesla hacker @greentheonly, or Green, has uncovered more details about HW4, providing valuable insight into its technology.

2-SOC Version and Camera Layouts

Green's analysis of firmware samples led to the discovery of the shipping version of HW4, internally referred to as the 2-SOC (System on a Chip) version. This version supports two possible camera layouts: the current one or an expanded one with added surround-view cameras, such as a front bumper camera and two additional side cameras. These cameras can run at a resolution of 2880x1876 and reach up to 45 frames per second. The main and backup cameras have unique specifications, with the vendor yet to be determined.

The new Global Navigation Satellite System (GNSS) is reportedly based on the Teseo V platform, while the radar system connects via Ethernet and operates on an internal IP address of 192.168.90.110.

Initial HW4 Camera Connectors and New Cameras

Initially, Green revealed HW4 with 12 camera connectors, and new cameras were expected to be used in HW4 vehicles. However, the first vehicles with HW4, specifically the Model S and Model X, have the new hardware but do not include the new cameras. As previously reported in our Project Highland article, Tesla plans to add a new camera to the bumper and one more to each side of the vehicle.

Two HW4 Setups and the 3-SOC Version

Green's latest findings show two HW4 setups: one with additional cameras and one without. Additionally, Green's firmware analysis has uncovered the existence of a 3-SOC version in development. The camera layouts for this version remain the same, but the internal deserializing routing differs.

Increased heat output from the GPU in HW4 has possibily led to limitations in its capabilities. The 3-SOC version could potentially address this issue by offering better heat dissipation or paving the way for new hardware. However, the exact purpose and development of the 3-SOC version remain uncertain at this time.

Tesla Semi Truck-related Findings

In another intriguing development, Green's firmware analysis revealed information related to Tesla's Semi truck, with the Battery Management System (BMS) and all three subpacks accessible over an internal ethernet network.

These discoveries by @greentheonly provide a comprehensive understanding of the advanced technology behind Tesla's HW4. As the most advanced full self-driving computer on the market, its potential applications and capabilities are undoubtedly exciting for the automotive industry and consumers.

As Tesla continues to develop and refine its full self-driving technology, it is crucial to address questions about its safety, functionality, and integration with existing systems. The world eagerly awaits further developments in the cutting-edge HW4 and the autonomous driving experience it promises to deliver.

Tesla Rolls Out Innovative Towing Solutions for Cybertruck and Supercharger Network

By Kevin Armstrong
Pull through supercharging added to UI
Pull through supercharging added to UI

Tesla’s latest update includes a special feature for Cybertruck that may eventually be rolled out to the rest of the lineup. It appears Tesla is getting ready for the summer road trip season early by focusing on enhanced security for drivers who tow trailers and improving accessibility to its Supercharger network for such vehicles.

Cybertruck's New Trailer Alarm Feature

A standout feature in the latest update is introducing a trailer alarm system for the Cybertruck. This innovative feature extends the vehicle's alarm system to monitor the connection status of a trailer hitched to the vehicle. In practical terms, this means the vehicle's alarm will now also protect the trailer, ensuring an added layer of security for owners' valuable cargo.

Activating or deactivating alongside the vehicle's alarm system, this feature can be conveniently managed through the vehicle's settings under the "Towing and Hauling" section, where the "Trailer Alarm" option is located. Owners who prefer not to use this feature can disable it, tailoring the vehicle's security settings to their preferences. At this point, we only have confirmation of the feature in Cybertruck, but it would make sense to add it to the other models that haul trailers as well.

Enhanced Supercharger Network Accessibility

Tesla is also improving the Supercharging experience for drivers with trailers. Recognizing owners' difficulties when charging vehicles while towing, Tesla has been progressively introducing pull-through stalls at Supercharger stations. These stalls are designed to accommodate vehicles with trailers, eliminating the need to detach trailers before charging – a significant improvement over the traditional back-in stalls that dominate the network.

Wes Morrill, a Cybertruck engineer who has become more vocal on X, posted that the “Supercharger team is always looking for opportunities to install these at new locations. Will show trailer friendly stalls on the in-vehicle UI to make it easier when road tripping with a trailer.”

Amid rising gas prices, Tesla's updates offer a cost-effective solution for summer road trips. The new trailer alarm and UI improvements for finding Supercharger stations address towing challenges, enhancing the Tesla experience. This initiative showcases Tesla's commitment to innovation and sustainable travel, enabling owners to bypass the impact of fuel costs and enjoy their adventures.

Tesla Expected to Release 'Actually Smart Summon' and 'Tap to Park' Updates Next Month

By Not a Tesla App Staff
Smart summon in April update
Smart summon in April update

Elon Musk announced that Tesla will finally reintroduce Smart Summon and Autopark to its vehicles. According to the CEO, these features are scheduled for release in April. Tesla removed ultrasonic sensors (USS) from their vehicles in 2022, and with it removed several features, including Autopark, Smart Summon and Park Assist. However, since then, they’ve added High Fidelity Park Assist, a feature that recreates the surrounding environment in 3D. Although, it’s currently only available to vehicles without USS, that’s expected to change in the near future, and could also come bundled in with the new Autopark feature.

This update in April is not only expected bring these features back to vehicles without ultrasonic sensors, but Tesla is also expected to release drastically improved versions of these features, known as Actually Smart Summon and Tap to Park.

Major improvements coming for Summon & Banish (Autopark) next month - Elon Musk

Improved Autopark

Greentheonly, who regularly decompiles Tesla firmware, has indicated that Tesla's latest software, version 2024.8, already contains the code necessary for these new features, but they need to be remotely activated by Tesla. Additionally, Green says the new Autopark system will offer users the choice between parallel and perpendicular parking options. The new Autopark is expected to let drivers visually select a parking spot, exit the vehicle, and let it park itself.

New ‘Tap to Park’ Feature

With the introduction of High Fidelity Park Assist, Tesla laid the groundwork for more sophisticated features like "Tap to Park."

Tap to Park builds on the original concept of Park Seek, a feature discussed by Tesla in October 2022 that aimed to automate the parking spot search process. While the initial vision for Park Seek suggested a vehicle could autonomously search for parking, "Tap to Park" simplifies this idea.

With the deployment of FSD Beta v12.3 going to more users this weekend, the company continues to leverage AI to reduce code in favor of neural networks trained with real-world driving data.

Just last week, Musk posted on X: "Really cool stuff coming both this month and next." Since that post, FSD beta version 12.3 has started going to more users, and now it seems two other long overdue and highly anticipated updates are coming with Actually Smart Summon and Tap to Park. Still no word on auto wiper improvements.

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