Tesla Software Update 2025.2 - Hands-Free Trunk Support for Android, Rear Cross-Traffic Chime

Not a Tesla App

Tesla’s first major update of 2025, software update 2025.2, is now rolling out to select vehicles in North America and Europe. While the update isn’t widespread yet, it is rolling out to most vehicles, including HW3 and HW4 cars. The Cybertruck and legacy Model S/X vehicles are currently the only vehicles that haven’t received this update.

Let’s take a look at everything we know that’s included in this update.

Third-Party Charger Preconditioning

First up, vehicles will now support preconditioning for third-party chargers. While this was previously available in Europe for approved third-party chargers that met Tesla’s strict standards, it’s now available in North America for the first time.

What’s New: When you navigate to a charging location, whether it’s listed in the vehicle’s charging locations or not, the vehicle will now precondition the battery for faster charging. It looks like the vehicle will automatically determine if the destination is an EV charging location and enable preconditioning. If the destination is a charging location, you’ll see a little banner show up, letting you know the vehicle’s battery is now being preconditioned. There isn’t a button to manually precondition the battery yet.

What’s Not Added: In Europe, the vehicle's charging filter shows approved third-party chargers. Unfortunately, it does not look like this is being added in North America, where Tesla only displays Superchargers and destination chargers. However, the above feature still applies in North America, where the vehicle will precondition the battery for fast chargers such as Electrify America.

The video below shows how the feature will work:

Muchos me habéis pedido que haga un vídeo de cómo se activa el precalentamiento en cargadores "no Tesla". Pues simplemente, en la ruta que elijáis, pulsáis sobre el cargador en cuestión y automáticamente se activa solo. pic.twitter.com/snMoPDx6Dr

— Gerard (@Gerard_Otero76) January 26, 2025

Rear Cross-Traffic Chime

Following up on the addition of rear cross-traffic alerts showing up as red indicators as part of the 2024 Tesla Holiday Update, Tesla is now adding an alert chime to go with it. Now, there is a visual indicator on the screen, as well as an audible indicator that a vehicle or object has been detected crossing behind you.

This is a great addition and almost looked like a glaring omission in the initial release of the feature. Tesla likely wanted to make sure the feature was working as expected in the wider fleet before introducing a more drastic alert.

The chime is enabled by default, but if you want to disable it, you can go to Controls > Safety > Rear Cross-Traffic Chime to disable it. Joe Mode will reduce the chime’s volume if you prefer that instead.

Interestingly, the rear cross-traffic alerts feature was a feature that Musk said “Yes” to back in 2020.

Hands-Free Trunk/Frunk for Android

Just recently, we reported that Tesla was adding ultra-wideband support for Android - which would include two new major new features.

Improved Phone Key Reliability: Ultra-wideband (UWB) is an alternative to Bluetooth, which offers highly accurate positioning and tracking of devices. It uses about the same amount of energy as Bluetooth Low Energy but with increased location accuracy. By having your phone communicate with the vehicle over UWB, the vehicle knows exactly where your phone is in relation to the car, drastically increasing the reliability of your vehicle’s phone key.

Hands-Free Trunk and Frunk Opening: More precise location tracking enables new features such as Hands-Free Trunk and Hands-Free Frunk support. This feature has been available on iOS devices for approximately a year and will now be available on Android devices.

Supported Models: Unfortunately, not all models are supported, and your vehicle needs to have ultra-wideband sensors. Supported models include the 2021+ Model S and Model X, the 2024+ Model 3, the Cybertruck, and the upcoming 2025+ Model Y. Only the Model S, Model X, and Cybertruck support the hands-free frunk.

Supported Phones: Most recent Android phones support ultra-wideband, especially flagship devices, however, it’s not available on all phones. If you have a Google Pixel 6 or higher, Samsung Fold 2 or higher, Samsung S21+, or other recent Android phone, then your phone already supports ultra wideband.

Users with Android devices with UWB will initially be prompted to “Upgrade” their phone key when opening the Tesla app. This will switch your phone key from using Bluetooth to ultra-wideband. Once upgraded, you can go to Controls > Locks > Hands-Free Frunk / Trunk in your vehicle settings to enable the new hands-free feature. If you aren’t prompted for the upgrade, you’ll find it under Security & Drivers > Phone Key > Upgrade in the Tesla app.

Weather Information

With every Tesla update, there are smaller features, and this one is no different. In this update, the weather information is now displayed for both the final destination and any additional stops (waypoints) you have set along the way. Previously, the weather would only be displayed for your current location and your destination.

Battle of Polytopia

Next up, Battle of Polytopia is receiving another update. This time “The Forgotten” skin is being added for the recently-added Aquarion faction, adding some old-world Atlantis vibes to the fishy folk. Additional language support and balance changes are also included in this Battle of Polytopia update.

Cybertruck Charging Improvements

Last month we reported that The Cybertruck is expected to receive charging and regenerative braking improvements soon. Tesla was aiming at releasing these updates in the 2025.2 update, so there’s a chance that these cold weather improvements are also included in the 2025.2 update, but we won’t know for sure until the Cybertruck starts receiving this update in the coming days or weeks.

Other Features?

Since this update hasn’t rolled out to all models or regions yet, it’s possible we may see some additional features added in this update, although at this point, it may only be features for the Cybertruck or the legacy Model S and Model X.

Finally, as usual, Tesla includes minor fixes, performance enhancements, security fixes, and improvements. If you notice any undocumented changes, please let us know.

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Tesla’s Hollywood Diner: In-Car Controls & Theater Screens Turned On [VIDEO]

Sky Fox

Tesla has been quietly building something pretty unique on the streets of Hollywood—and we’ve been keeping a close eye on it. That’s right: the long-anticipated Tesla Hollywood Drive-In, Diner, and Supercharger is shaping up to be one of the most creative approaches to EV charging yet.

But this isn’t your average Supercharger site. It features a retro-futuristic, 24-hour diner and an outdoor movie theater, blending the charm of the 1980s with the tech-forward vibe of the 2020s.

Construction has been underway for quite some time, with the Cybertruck-inspired stainless steel structure going up around mid-2024. And more recently, we spotted hints in the Tesla app that the Diner’s debut is getting close.

Diner Controls in App / Car

Tesla hacker Greentheonly managed to spot some new evidence of changes within Tesla’s 2025.8.6 software build, which includes a new modal for “Charger Diner Controls”. While there isn’t anything to activate this new modal just yet, it is an indication of how Tesla intends to integrate the experience right into each and every Tesla.

The text in the modal reads: “Plug in, place your order, recharge” - which means that once you arrive and are plugged in, you’ll be able to place your order - and likely pay through Tesla’s payment system. It seems like this will all be done through either the Tesla app or the vehicle’s tocuh screen. No need to fumble with a separate app or pull out your wallet.

This is definitely a level of integration you just can’t have anywhere else - and just like any other Supercharger site, the Tesla Diner will appear as a suggested site for charging when you’re navigating or looking around the Hollywood area.

This is our best look yet at the two 45-foot LED screens at @Tesla's upcoming Hollywood diner and Supercharger.

We can also see the second Supercharger lot on the left with solar canopies. This will be one of the largest Supercharging spots in North America. pic.twitter.com/aWUe67M5vw

— Sawyer Merritt (@SawyerMerritt) April 18, 2025

45-Foot Screens Ready

Those two absolutely gigantic 45-foot LED screens have now been turned on for the first time, meaning that Tesla is likely close to opening the Supercharger site. The screens were spotted displaying some test patterns, as well as some Tesla-themed content. It really brings the construction site to life - and it's the clearest sign that the Diner is well on its way to completion.

We’re hoping that this first Tesla Diner sees plenty of success - and that Tesla begins opening more of these types of facilities throughout North America, and eventually globally. Given Tesla’s penchant for unique Superchargers, we imagine this could truly be the case one day.

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Tesla’s FSD V13 Pushes HW4 Hardware Capabilities; End of Line for HW3?

Not a Tesla App

As Tesla continues to push the capabilities of its hardware as it prepares for autonomy with FSD Unsupervised, there has been a distinct divergence in features between HW4-equipped vehicles on FSD V13, and HW3-equipped vehicles on FSD V12.6. 

There are definitely reasons for this, and Tesla hacker Greentheonly, over on X, went into great detail on some of the reasons why this divergence has continued and is likely to continue.

If you’re interested in some background, we recommend the following articles. Although they’re not necessary, you may enjoy reading them before diving right in if you enjoy this topic.

• How FSD Works - Part 1

• How FSD Works - Part 2

• How Tesla Optimizes FSD

• Tesla’s Universal AI Translator

Back in the summer of 2024, we reported that Tesla’s HW4 had yet to reach its full potential, and that HW3 still had some compute to work with. However, FSD has undergone a rapid evolution - there are now fundamental differences driven by the hardware capabilities and sheer scale of the latest builds of FSD.

FSD V13’s Gargantuan Neural Networks

FSD V13 is a substantial leap for Tesla. It features substantially larger neural networks - the core brain that processes all the environmental data and makes decisions. Those networks are far larger in V13 than in V12, which results in a much smoother and human-like expereience.

Tesla’s FSD computers contain two nodes. According to Green’s analysis of FSD V13, Node B, which handles the actual end-to-end driving logic, tripled in size from 2.3 GB in V12 to a staggering 7.5 GB in V13. That’s a substantial increase, and one of the main reasons why HW3 can’t handle FSD V13. While Interestingly, Node A on HW4 remains similar in size to FSD V12, using up about 2.3 GB.

However, this massive size is also pushing the limits of HW4. While this isn’t necessarily a big problem immediately - at the end of the day, there is a limited amount of compute and ram available and model sizes will likely grow in the future. In fact, Tesla is planning to scale model sizes in the next FSD version and has already said they’ll need to optimize them, as context size is limited by on-board memory.

HW3 Limitations

Since HW3 can’t run the latest FSD models, where does this leave millions of Tesla vehicles equipped with the now-legacy FSD hardware? Are they hitting a dead end? Not exactly - Tesla has promised to replace HW3 computers with new units during the Q4 2024 Earnings Call, but only for those who have purchased FSD and only if Tesla is no longer able to update HW3 vehicles.

There’s no doubt Tesla hopes to achieve autonomy and then work backwards to make it compatible with HW3, but that’s unlikely to happen with the limited ram available on HW3.

Tesla’s AI team has continued to say that they’re still working on updating HW3 vehicles - but that they will be taking a backburner to updates for HW4 until the team can optimize the model efficiently enough to run on the smaller footprint. That means V12.6 isn’t just V13 “lite” - it is a distinctly different software branch tailored specifically for HW3’s capabilities.

Green's analysis showed that HW3 under V12.6 runs NNs totaling 1.2 GB on Node A and 3.1 GB on Node B, which is significantly smaller than the footprint of V13. Back in November, we discussed how Tesla is running a smaller and optimized FSD model on HW3, with the specific goal of achieving similar performance to V13. FSD V12.6 appears to be the current implementation of that smaller model strategy.

Green also found that of the total neural nets used for FSD, 135 are shared between the current V12.6 and FSD V13.2 releases, which is the result of Tesla’s AI team working to optimize and refine the V13 model for HW3. So some neural nets are shared between the two sets of hardware, while others are specific to HW3 or HW4.

AI4 in the Future

The fact that V13 is already stretching HW4’s limits makes us wonder about Tesla’s imminent release of AI5. Last year, Tesla mentioned that AI5 would be 18 months away - which is now about 8 months away, and potentially even sooner to help solve the autonomy problem.

At the same time, Tesla is looking to launch Unsupervised FSD in June in Austin, Texas, with presumably HW4, which would indicate that they’re confident in its capabilities.

Unless Tesla launches the Robotaxi network with AI5, we don’t believe AI5 will be a “must have” item. Undoubtedly, it will result in similar improvements to HW4 compared to HW3. However, the software needed to take advantage of the newer hardware could still be years away.

All eyes will be on Tesla’s Robotaxi network launch and the hardware required for it. For now, HW4 owners are in good hands with future updates are on the horizon, and we’re certainly excited for what’s next.

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