When the refreshed Model S was revealed this summer, we were introduced to a brand new user interface. An interface that was different from all other Teslas.
Tesla Model S UI
The feature set of the new software is essentially the same as other Tesla models, minus any features that are exclusive to the refreshed Model S, such as Active Road Noise Reduction.
However, the new UI does bring some capabilities that make it easier to use and more versatile.
Some of the biggest changes in the UI include customizable buttons along the bottom of the screen.
It also introduces the ability to drag and dock windows to different parts of the screen.
There are many smaller changes as well, such as a mini music player that sits on top of the map. The mini player gives you quick access to music controls used most often, such as skip and pause.
The new Model S and Model X contain Tesla's latest infotainment hardware, known as MCU 3. It features a more powerful processor, the AMD Ryzen, instead of the Intel Atom processor that is used in MCU 2.
MCU 3 gives Tesla the ability to have a richer UI. The animations in the new UI are smooth and fluid when dragging windows and tapping buttons.
Up until recently Tesla's MCU 3 was exclusive to the new Model S and Model X, however recent Model Y vehicles coming out of China now also include the new MCU.
Although new Model Ys in China now feature Tesla's latest MCU, they are still running the same UI that is found in all Model 3 and Model Y cars.
The speculation began whether these Model Ys would be upgraded to run the new UI that is found in refreshed Model S vehicles. Since they use the same hardware, they should both be capable of running the same software.
New User Interface Coming
A new document that was presented to the European Union outlines changes coming to the Model Y. The document confirms that new 2022 Model Y vehicles, known as V20 will indeed support the new user interface that is used on the new Model S.
The new interface will need to be adapted to a slightly smaller screen since Model Ys have a 15” screen instead of the Model S' 17” screen. However, the bigger adjustment and likely the reason why new Model Ys are not running this new UI yet, is because the software still needs to be adapted to support a single screen.
Since Model 3 and ModelYs only contain a single screen, all the information that is included in the Model S' intrument cluster needs to also appear on the Model Y's main screen. This includes information such as the car's visualizations, speedometer and more.
It's not clear whether visualizations in the Model Y will be permanently docked to the side of the screen like they are in current Model Ys, or whether Tesla will treat them as an app and let you move them around or even hide them.
Current Model 3 / Model Y
The big question on everyone's mind is whether current Model 3 and Model Ys will support the new UI.
There has been no official word from Tesla or Elon Musk, but we expect that this question will be asked more often and Tesla will provide an official answer in the future.
There are various possibilities and reasons why Tesla may or may not support the new UI on current vehicles.
The first possibility is that Tesla will support the new UI on current vehicles, but it will require an upgrade to MCU 3.
This won't be a cheap upgrade, likely in the $2,000-$3,000 or more range, but there would be additional benefits by upgrading the MCU as well, such as faster rebooting, faster loading of apps and even new features that may be exclusive to MCU 3.
The other two possibilities are more obvious, either Tesla will support the new UI on MCU 2 or they won't.
There is currently speculation and good arguments for both sides.
Up until 2017 Tesla was releasing vehicles with MCU 1. All Tesla UI updates in the past have applied to MCU 1 and MCU 2 vehicles. Of course, there are some features that are exlusive to MCU 2, like Tesla Theater, but the look and feel of the interface is the same across the vehicles.
It's possible that Tesla will follow a similar approach and make the new UI available to all.
There are other smaller reasons, such as Elon saying that Auto Shift is coming to all Teslas. That feature is exclusive to the new UI thus far.
There are various other reasons that lead us to think that Tesla may bring the new UI to all vehicles. This may mean that some features such as window dragging or window docking get dropped, but it's very much possible we'll see the new UI in all Teslas.
As many reasons as there are for Tesla supporting the new Model S UI on older Teslas, there are just as many reasons why Tesla won't be able to.
It's obvious that the new interface requires more horsepower, more than MCU 1 or maybe even MCU 2 can deliver. The UI lets you drag apps around. It lets you have multiple apps on screen at the same time, but these more intensive features could be removed for vehicles that may not be able to handle them.
Perhaps the most convincing reason for the new UI not becoming available for all vehicles is that Tesla engineers have said MCU 2 isn't capable of running the new interface. These comments were made by a couple Tesla engineers, so it's definitely not official by any means. They were also said when the new Model S was released this summer, so it's possible a lot has changed since then.
One thing is for sure. Tesla has a history of supporting older vehicles, regardless of the model year. In fact, Tesla still delivers updates to the original Model S that was released in 2012. If Tesla can find a way to bring the new UI to all Teslas, then they most likely will.
Elon tweeted just yesterday that Tesla will be releasing a Holiday Update this year with many ‘cool' features. Who knows what's in store for us. However, just like Christmas, lets temper our expectations and be thankful for anything we receive.
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Tesla’s latest vehicles, including the Cybertruck, Cybercab, and the refreshed Model Y, now feature a front bumper camera. However, as of FSD v13.2.8, the Cybertruck’s bumper camera remains unused for FSD and primarily serves as a helpful tool for parking and off-road driving.
With bumper cameras becoming more common across Tesla’s lineup, the question remains: will they eventually become a necessary component for Unsupervised FSD, or are they simply an added convenience for now?
Actually Smart Summon Needs Bumper Vision
Not a Tesla App
Every Tesla model that has the ability to use Actually Smart Summon occasionally rolls slightly forward or backward before exiting a parking stall. This movement helps the vehicle get a better view of what’s directly beneath the front lip of the hood before proceeding.
However, this behavior has led some vehicles to make contact with walls or posts, prompting the NHTSA to launch an investigation into Actually Smart Summon. The simple solution is to mount a lower front camera that allows the vehicle to see what’s directly in front of it when it wakes up.
The Cybertruck currently lacks access to Actually Smart Summon—or any Summon functionality, for that matter. Tesla hasn’t announced when the vehicle will receive one of its most advanced autonomy features. Given the vehicle’s height and its larger front blind spot, the delay likely stems from the need to integrate the bumper camera for improved visibility.
At the end of the day, Actually Smart Summon is essential for Unsupervised FSD. A fully autonomous vehicle must be capable of navigating crowded parking lots, reaching pickup points, and parking itself without human intervention.
Training Data and Cameras
We already know that adding a new vehicle to FSD can take months—but what about integrating training data from an entirely new camera and perspective? That process could take even longer, especially with a vehicle like the Cybertruck, which is larger and wider than Tesla’s other models.
We also know that the Cybercab—set to launch in Austin in just a few months—features a bumper camera to improve visibility below the front lip. Tesla doesn’t add new components without purpose; every part, from the camera and wiring to the housing and engineering, represents a calculated investment.
Given this, it’s reasonable to expect that Tesla is already using bumper camera data from the Cybertruck—and soon, the refreshed Model Y—to train an updated FSD model. Whether this model is focused on parking lot navigation and Actually Smart Summon or expands to broader FSD improvements on city streets and highways remains to be seen.
Compute and AI5
Tesla has already stated that the AI4 computer has unused compute power, but they’re running into memory limitations in future FSD builds due to the sheer volume of incoming data. That said, Tesla has hinted at optimizations to better manage memory on AI4.
Would integrating data from an additional camera overwhelm the system? Probably not in terms of compute, but memory efficiency remains a key area for improvement—especially as Tesla plans to triple both the model size and context window in upcoming FSD versions.
On the other hand, the Cybercab is set to launch with its own unique, more powerful AI5 computer. At the We, Robot autonomy event in October, Elon Musk confirmed that AI5 was designed for redundancy and higher safety. Tesla has been working on parallelizing FSD computations for some time—but we’ll explore that in a separate article.
Wrapping it Together
Putting it all together: the bumper camera has arrived, and Tesla doesn’t add hardware without a purpose. While it’s not yet in use for FSD, Tesla is likely gathering footage to train future models. The AI4 computer has the compute power to handle an additional data stream—but will Tesla actually integrate it?
If we were to go out on a limb, we’d say that Unsupervised FSD will likely require a bumper camera to be part of the Robotaxi network, but there’s another compelling reason. Tesla currently offers Supervised FSD for subscription and sale - but you can no longer buy FSD the way it used to be marketed. That changed back in September 2024, when they made adjustments to all their websites globally to list Supervised FSD as the product and feature that was being sold. That could have an impact on Tesla’s future plans with how they offer Unsupervised vs Supervised FSD.
So, will a bumper camera be necessary? We think so. Will it be a retrofit? Possibly. Tesla has already confirmed that they will retrofit HW3 vehicles with improved hardware in the future, meaning that other FSD hardware upgrades aren’t completely off the table.
However, retrofitting a bumper camera is complex, requiring extensive disassembly, wiring through the frunk, firewall, and into the AI computer. It’s possible that the camera will primarily be used for low-speed parking lot maneuvers—where supervision will be required—while Unsupervised FSD will only be available while driving on city streets and highways. The largest issue is simply what happens if the vehicle was asleep, and it can now only leave by driving forward — where it has a large blind spot.
While the exact role of the front bumper camera remains uncertain, its presence in newer models suggests it could be critical for a. fully autonomous vehicle. Whether it becomes a requirement for the vehicle to start driving from a parked position without anyone inside the vehicle, or whether it’ll only be required in parking lots or even to become a part of the Robotaxi network remains to be seen.
Tesla’s latest software update, version 2025.2, brings new features to Service Mode, continuing the trend of improving in-vehicle diagnostics.
Currently, this feature is only available for vehicles with AMD Ryzen infotainment systems and requires Service Mode+, which is a subscription service aimed at technicians. Intel-powered vehicles aren’t supported yet, but we expect this feature to roll out to them as well unless hardware limitations prevent it.
Thanks to Spencer for providing an image of the panel in action.
Signal Viewer Panel
While update 2025.2.6 adds four service mode improvements, including updates to brake burnishing, charge port calibration, and noise recording panel improvements. In this article, we’ll focus on the new signal viewer panel.
This new panel offers a live data feed from selectable vehicle sensors. You select the signals you’re interested in and it’ll plot the signal on a graph. In addition to allowing you to view real-time signal data, it also allows you to record them.
The signals are searchable and can be easily added or removed from the panel. You can track up to 10 sensors, and the UI allows three of them to be viewable at once.
However, this is Service Mode and it’s more than just pretty looks. You can really dig down into these charts. You can pan them left and right through time, and tapping a specific point shows the exact value of that signal. The panel also supports pinch-to-zoom, enabling you to adjust the time scale across all panels simultaneously.
This feature is exclusive to Service Mode+, which requires a subscription to Tesla’s ToolBox3 software and a connection to a computer. It’s designed to help technicians diagnose issues related to signal quality, noise in the vehicle’s electrical systems, and signal variance in components during driving.
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