Apple has released its latest software update for iPhone, iPad, and MacOS, along with other systems. While the update includes many new features, such as RCS text message support, a customizable Control Center and many other features, we’ll focus on the ones that apply to Tesla and the Tesla app.
Control Center
With iOS and iPadOS 18, Apple overhauled Control Center. Visually, it remains very similar to its previous incarnation, except that you can now customize it in several ways. First, you can resize each button. Most icons can be customized so that they take up a single square, two spots or four. While Tesla doesn’t support any native actions for Control Center yet, you can create your own shortcut using Apple’s Shortcuts app and add it to Control Center (see below). The action can preheat/precool the cabin, start charging, unlock the vehicle or many others. To set a custom action, simply swipe down to Control Center, tap the plus (+) icon on the top-left corner, and choose Add a Control at the bottom.
Not a Tesla App
Customize Tesla App Icon
iOS 18 also adds support for dark icons and customizable tint options. That means that you now have a degree of control over what the Tesla app icon looks like. To use dark icons while Dark Mode is active on the phone, tap and hold on any app icon and choose Edit Home Screen. When the icons start jiggling, tap the Edit button on the top left and choose Customize.
At the bottom of the screen, you’ll now be able to choose between various methods of customizing your app icons. You can pick from two app icon sizes, choose light/dark app icons and choose a color for tinting all icons.
The Tesla dark icon is a red T on a black background, while the light icon remains the same white T on a red background. The Tinted option allows you to tint all of your app icons in your preferred shade.
Lock Screen Buttons
Not a Tesla App
The iPhone has had two lock screen icons for several years, which include shortcuts to the flashlight and camera apps. However, with this update, you can now swap out those icons for other apps or custom actions. Since the Tesla app doesn’t support any actions yet, you’ll need to create a shortcut first, then you can apply it here or to the Control Center. Creating a shortcut for cabin preconditioning is one of the most useful options, as it gives you one-touch access to cooling your vehicle.
To set up custom lock screen buttons you’ll want to lock your phone first. then tap on your wallpaper in any blank area. Choose customize and then choose the lock screen. You’ll then see several options to add widgets or remove the icons from your lock screen. Start by removing one of the icons at the bottom, then tap the + button to add a new one. This could be the Tesla app, or a specific shortcut. If you want to use a shortcut, you’ll want to choose Shortcut Control Title. Once the menu comes up, you simply pick the shortcut you created.
Locking Tesla to Face ID
With iOS 18, Apple also introduced the ability to lock or hide certain apps. You can lock an app so that it requires Face ID before someone is able to access it. To set it up, just tap and hold on the app icon you’d like to lock and then choose the “Require Face ID” option. Like most things on iOS, if Face ID fails, you can still open the app with your phone’s passcode. If you prefer to hide an app, the process is similar. You’ll want to choose Require Face ID, and then the phone will prompt you whether you want to just require Face ID or if you’d like to hide the app.
If you choose to hide the app, the app icon will be removed from your home screen, and the app will only show up in the Hidden folder in the App Library. To access the App Library, swipe left after you get to the last home screen. To bring up a list of your hidden apps, tap the Hidden folder at the bottom and authenticate with Face ID.
Keep in mind that locking or hiding your app comes with several disadvantages. If you lock your app, then all Tesla notifications won’t be readable without first authenticating with Face ID.
Creating an Apple Shortcut & Using Siri
Not a Tesla App
You can create your own custom action with Apple Shortcuts. They can be extremely simple, like unlocking your vehicle, and require only a couple of minutes to set up.
To create a shortcut that could be utilized in Control Center, on the Lock Screen or as the Action button, open the Apple Shortcuts app.
Once you’re there, tap on the plus (+) sign at the top right corner of the app. On the bottom half of the screen, scroll up until you find the Tesla app and tap it. You’ll then see a list of all supported Tesla functions.
You can tap on any action such as Start under ‘Precondition Vehicle’ or Unlock vehicle. After choosing your preferred option, you’ll need to choose the vehicle it applies to, even if you have a single vehicle on your account. Simply tap the Choose Vehicle text and pick your car.
If you’d like to name the action, you can tap on the name with the down arrow at the top center of the screen and choose rename. After renaming your action, you can simply tap done and exit the app.
You can now run the action by simply saying its name when you bring up Siri, such as “Hey Siri, start car.” You can also take this shortcut and add it to Control Center or the lock screen for quick access.
Action Button
Not a Tesla App
With the new iPhone 16 model, Apple has replaced the mute/vibrate toggle with the Action button for all phone models. The Action button can be used for any action you’d like, but assigning it to a shortcut allows you to perform certain Tesla functions like the ones we mentioned earlier that could be added to Control Center or the lock screen.
Cooling down the cabin can now be a single button push away, and you can even push it without removing your phone from your pocket.
Until Tesla adds native support for actions that could be added to different parts of iOS 18, creating a simple shortcut is your best bet to take advantage of the latest iOS 18 features.
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For Tesla owners with vehicles equipped with Hardware 3 (HW3)—once hailed as the key to unlocking autonomy, Robotaxi functionality, and unsupervised Full Self-Driving—the landscape is quickly changing. FSD updates were previously available for HW3 and HW4, but now, HW3 is often excluded from newer FSD updates due to compute and memory constraints. While HW3 vehicles still run a capable version of FSD, they are considerably less smooth than HW4 vehicles.
This has many HW3 owners curious about Tesla’s plans to upgrade these older vehicles, which were once promised to be capable of true autonomy. Let’s take a look at everything Tesla has said and what we should expect.
The HW3 Predicament
Introduced around April 2019, HW3 was a big leap over HW 2.5 and HW 2, with Tesla billing it as the computer that would eventually deliver true self-driving. For a long time, it powered the FSD Beta program. However, as FSD Supervised becomes more complex and data-intensive, particularly with neural networks moving towards an end-to-end AI approach, questions about HW3’s long-term lifespan have grown.
While HW3 vehicles are still receiving FSD updates, with the latest version, V12.6, launching in January 2025, the latest improvements in FSD v13 appear to be stretching even the more modern capabilities of AI4 hardware. This has understandably led to concerns that HW3 will not support Robotaxis and true autonomy.
Tesla’s HW3 Upgrade Promise
To address these concerns, Elon Musk has made increasingly definitive statements. After initially suggesting an upgrade would happen "if needed," he confirmed at the Q4 2025 Earnings Call that Tesla will upgrade HW3 computers for customers who purchased the FSD package.
Musk stated, “That's going to be painful and difficult, but we'll get it done. Now I'm kinda glad that not that many people bought the FSD package, haha.”
While Musk initially stated that Tesla would offer a hardware upgrade if needed, he gave more details this time, stating that the complimentary upgrade would be available for those who purchased the FSD package. Subscribers and non-subscribers will likely need to pay a fee similar to the HW 2 / HW 2.5 upgrade. Interestingly, Tesla was later sued for charging a fee to upgrade to HW3 and had to waive the cost.
When Will the HW3 Upgrade Be Available?
Despite Musk’s confirmation of an upgrade, Tesla hasn’t provided any timelines or estimates for HW3 retrofits. The prevailing logic, and one that aligns with Tesla’s approach to engineering challenges, is that the company is unlikely to initiate a mass upgrade program until FSD is significantly closer to being “solved,” meaning it has achieved true, unsupervised autonomy where a driver is not needed.
Until Tesla knows the final, stable computing power and architectural requirements needed for that level of autonomy, rolling out an interim upgrade wouldn’t make sense. It would risk needing yet another upgrade down the line. Therefore, HW3 owners are in a waiting game - will they wait it out, or will they take one of Tesla’s FSD transfer deals?
What to Expect With the HW3 Upgrade
One thing is clear. The upgrade will not be a simple swap to the current generation of HW4 hardware. AI4, as found in newer Tesla vehicles, has different physical dimensions, power and cooling requirements, and connector configurations that make it incompatible as a direct retrofit into HW3-designed vehicles. It’d require a lot of effort and cost to adapt HW4 for HW3 vehicles.
This means Tesla will have to develop another custom-designed retrofit FSD computer specifically for HW3 replacements. This computer must fit within an existing and defined physical space and operate within the power and cooling budget of older vehicles.
Speculation naturally turns to Tesla’s next-generation FSD hardware, HW5 or AI5. Elon previously indicated that AI5 would appear in new vehicles near the end of 2025, initially citing a timeframe of 12-18 months back in mid-2023. However, it now looks like it’ll ship sometime in the first half of 2026.
Potentially, a variant of this new AI5 computer, perhaps a more power-efficient or underclocked version, could be engineered to form the basis of the HW3 retrofit solution. This is plausible, as newer chip architectures often bring considerably greater efficiency, potentially allowing a more powerful new design to operate within HW3’s constraints.
What About HW4 and HW5?
The current-generation FSD computer, HW4, is already facing some constraints with the latest FSD v13 updates. This means buyers and owners of AI4 vehicles are also starting to have this question creep into the back of their heads… “What about my vehicle?”
Based on Tesla’s official statements on AI5, it is poised to be a powerhouse of an upgrade. That means up to 10 times the processing capability of AI4. This is an immense increase in processing power, and over time, Tesla will likely use every bit of it to make FSD handle as many edge cases as possible. While AI4’s computing power was a modest increase from HW3, the leap from AI4 to AI5 is expected to be significantly larger.
Tesla’s executive team has stated that the existing cameras on HW3-equipped vehicles are “capable” and that the upgrade will be focused on the FSD computer. While the AI4 cameras offer a much higher resolution than HW3, Tesla says they’re not needed. This appears to contradict what Tesla is doing as of FSD v13.2. In that update, Tesla introduced processing FSD camera feeds at full resolution, suggesting that there is some advantage to the higher-resolution cameras.
Musk also stated that cameras would not be upgraded in HW3 vehicles.
As we’ve previously covered, the newer HW4 cameras offer several advantages over the HW3 camera generation, which include:
Higher Resolution: The AI4 cameras feature 5 megapixels, compared to the 1.2 megapixels on HW3 cameras, which allows the vehicle to see things further away and in sharper detail.
Improved Dynamic Range and Low-Light Performance: The improved dynamic range allows the system to see more clearly in low-light conditions, such as during sunrise or sunset, or at night.
Wider Field of View: The rear camera on AI4 features a significantly larger field of view, providing greater awareness of the vehicle's surroundings.
It's known that AI4 processes camera data at these higher resolutions, which undoubtedly contributes to its increased performance in decision-making, object recognition (especially at a distance or for small details, such as text on signs), and overall FSD smoothness.
Therefore, while a new, more powerful retrofit computer for HW3 vehicles will bring substantial improvements, it will still be processing input from the older-generation cameras. Another technical challenge that Tesla will need to address is how to maximize FSD performance using the existing HW3 cameras.
Infotainment (MCU) Upgrade?
Most HW3-era vehicles are equipped with the older Intel Atom-based infotainment computer, known as MCU 2. Newer Teslas, as well as newer HW3 vehicles, use the considerably faster AMD Ryzen-based MCU 3. Given that Tesla sometimes packages the FSD computer and infotainment computer together, it wouldn’t be too surprising to see an MCU upgrade as part of an FSD computer retrofit.
While this would be a welcome improvement, providing a snappier user interface and better media capabilities, Tesla has not confirmed any such plans. The FSD computer and the MCU are technically separate systems, but Tesla usually bundles them together to save on costs. While Tesla has offered paid MCU upgrades in the past (e.g., from the older MCU 1 to MCU 2), there is currently no official upgrade path from MCU 2 to MCU 3.
It’s best to assume that the promised free FSD computer upgrade will not automatically include an infotainment system upgrade as well, but it’s certainly possible, given that Tesla usually bundles these together.
Playing the Waiting Game
For Tesla owners who purchased FSD with their HW3 vehicles, the commitment for a free hardware upgrade is on the record. However, the "when" and "what" remain tied to the challenge of achieving true, unsupervised autonomy. Once Tesla understands the compute power required to solve FSD, we’ll likely hear more about this hardware upgrade. Until then, we’ll have to hold on tight with FSD v12.6.
In just 8 months, Tesla has gone from breaking ground to delivering electrons at its most ambitious Supercharger project to date, just in time to be ready for the busy Fourth of July holiday weekend. Project Oasis, the world’s largest Supercharger site, is now partially open to customers for its first phase in Lost Hills, California.
What makes this remarkable is the speed of execution. In just eight months, Tesla has constructed a site that will eventually feature 168 stalls (84 stalls are now open), supported by 11 MW of solar power and 10 Megapacks of battery storage. That construction speed is pretty impressive, but what is even more impressive is how this new station operates and what it means for future Supercharging infrastructure.
Self-Sufficient Energy Oasis
Not a Tesla App
The first 84 stalls at Lost Hills are now open, and according to the Tesla Charging team, they are currently powered solely by the sun and operate off-grid.
This makes it more than just a new Supercharger site. It serves as a proof of concept for a new type of Supercharger. Unlike nearly every other charging site in the world, which draws power from local utilities, this station generates its own clean electricity from its massive solar array and stores it in its array of on-site Megapacks.
Self-sufficient charging stations are something completely different than what we see today. They are highly resilient since they’re not reliant on the grid. That means that even if there is a local power outage, brownout, or blackout, one can always come to Lost Hills to Supercharge.
If you’ve got a Cybertruck, you could take advantage of the Cybertruck’s Powershare feature and charge up at Lost Hills to help keep your home powered during a blackout, utilizing the Cybertruck as a portable battery charger. Now that’s true independence and self-reliance.
The Future of Charging
Solar-powered Superchargers help avoid massive new loads on already stressed electrical grids, especially during peak afternoon and evening hours, when demand is the highest.
This is Tesla’s vision for the future of charging: a clean, fully closed-loop ecosystem that sustains itself. The sun’s energy is captured, stored, and delivered directly to vehicles on site at any time of day without relying on the electrical grid or fossil fuels.
Largest Supercharger in the World
This opening of 84 stalls is just the first phase of the project. Tesla says that the remaining stalls, as well as a new on-site lounge, are coming later this year. Once complete, the 168-stall site will be the largest Supercharger site in the world.
While the speed of building such a massive project in just eight months is a testament to Tesla’s execution, the true innovation is actually that self-sustainability. Let’s hope we see even more large, self-sufficient Supercharger sites across the world in the near future.
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