An updated yoke is coming to the Model S and Model X, along with ambient lighting and more
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Tesla appears to be ready to unveil some changes to the Model S and Model X.
The Model S and Model X will gain updated "efficiency" packages in 2024. References to these hardware changes were spotted by Tesla enthusiast Greentheonly in the 2023.44.30.8 vehicle firmware. Green goes on to say that Tesla makes efficiency package changes when there are changes to the battery or drivetrain that affect the vehicle's range.
However, these changes don't necessarily mean the changes will improve efficiency or increase the vehicle's range.
Former Tesla service technician, Anthony Spina mentions that Tesla last changed an efficiency package in 2021 when they increased the battery pack for the Model 3 and Model Y from a 77 kWh battery to a 82 kWh battery. Tesla also added more efficient motors at the time.
Tesla recently updated their EPA mileage for new models in the U.S. and Canada due to government-required testing changes. Although vehicle hardware didn't change, the EPA estimates are now lower than before across most Tesla models, including other EVs.
This is because the EPA now requires vehicle manufacturers to account for all acceleration modes and averaging them when determining the vehicle's range.
To combat less efficient stopping modes, Tesla is removing roll and creep modes on new Model 3 and Model Ys in these countries.
Update: New Model Xs have now come off the assembly line with the new steering wheel we talk about in this article, although they do not include additional changes to the battery pack, drivetrain or the ambient lighting and front bumper camera changes. It appears that Green’s findings for the new efficiency package in the vehicle’s firmware may have been related to Tesla’s updated EPA range estimates and not related to changes to the battery pack or drivetrain themselves, as they have been in the past.
However, the new Model S and Model X are still expected to receive the ambient lighting treatment akin to the new Model 3 and the front bumper camera like the Cybertruck.
Center Horn
While looking through the firmware's code, Green also found a reference to a new yoke for the Model S and Model X. The new wheel will finally feature a mechanical horn in the center. Since the new Model S was revealed in 2021, it has used a small button on the steering wheel to activate the vehicle's horn.
We've heard that this center horn has been coming for a while now, but given that it's now showing up in Tesla's firmware, it looks like a release may finally be near.
Ambient Lighting and Bumper Camera Also Coming
The Model S is due for a new seat design. A few months ago, the parts catalog displayed a different seat design with a much higher and more narrow headrest. Directly below the headrest is a Plaid badge that looks like it could be swapped out for different designs. The seat design is similar to the RECARO or Sparco racing seats, two leaders in the performance automotive seat field.
The ambient lighting in the new Model 3, and Cybertruck has been a popular feature, adding an option to the vehicle's cabin that resonates with the high-tech feel of these vehicles. The ambient lighting addition is certainly coming to other models, and our source previously confirmed that it will include the Model S and Model X. Remember the Model Y refresh, code name Juniper is underway.
The front camera is also featured in the Cybertruck and will undoubtedly be added to the rest of the fleet. The camera removes the blind spot just in front of the car for those tight parking spaces and has been a welcome addition after removing other sensors. Our source also confirmed that the front bumper camera will also be arriving on the Model S and X.
However, all of these changes may not necessarily arrive at the same time. Tesla is all about efficiency and doesn’t roll out changes with model years, so they will typically only add new parts when they’ve used up their current supply. We could see the bumper camera arrive first and later followed by ambient lighting, although we wouldn’t expect these features to be very far apart.
It’s the start of a new year, but the same ol’Tesla, a company that continues to make changes, adapting to new testing and customer preferences.
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Tesla has begun reaching out to customers to replace the high-voltage battery pack seals in Model S and Model X vehicles manufactured between 2021 and 2022. In particular, this impacts vehicles between January 2021 and September 22, 2022.
Tesla is notifying impacted owners through a notification and message in the Tesla app.
Plunger Replacement
The high-voltage battery port plungers intended for internal water leak egress (also known as flood ports) are being replaced with improved parts. The new parts are designed to be more robust against external water ingress due to submersion during flooding or other high-severity water impacts.
Tesla specifically notes that no action is needed from owners at this time - once the parts are available, owners will be notified with a notification from the app to encourage them to schedule a service appointment.
This voluntary recall is likely related to the incident where the fully submerged Model X caught on fire underwater, requiring first responders to wait for the battery to burn out before recovering the vehicle. That incident occurred back in October 2023.
While Submarine Mode is a fun Easter Egg, it doesn’t actually improve your vehicle’s water rating.
Service Details
Taking a look at the Service Bulletin (SB-25-16-002), Tesla will be replacing all five flood ports and, if necessary, the breather plugs and flood port doors. Tesla will require you to take your vehicle in for this appointment, which should take approximately 90 minutes for the Model S, and approximately 60 minutes for the Model X. Tesla’s Mobile Rangers won’t be able to complete this activity in your driveway.
The part being replaced is the plug.
Not a Tesla App
Because this is a voluntary recall, Tesla will be offering this as a goodwill service for any owners who have exceeded their Model S or Model X limited battery warranty - so don’t hesitate to take your vehicle in.
Following a period of radio silence from Tesla on FSD updates, Elon Musk has finally hinted that progress is continuing behind the scenes on FSD and that “Several major improvements are incoming.” We’re pretty excited - it has been over 100 days since the last FSD update, and we haven’t heard much since then.
The latest versions of FSD were V13.2.8 for AI4 vehicles and V12.6.2 for HW3 vehicles, both of which were released in January of this year — almost four months ago. While development has been ongoing internally, many have been wondering what the next public release will be. Will it be FSD V13.3, or will we jump straight to FSD V14.
Decoupled Releases & Spring Update
Tesla has now begun pushing Early Access users the 2025 Spring Update without an FSD version change. This means that we can expect the next FSD update to likely be based on the 2025.14 branch.
It’s worth noting that Tesla can add improvements to FSD at any time - and sometimes they do make minor changes without incrementing release numbers - small flag changes in FSD’s software to address how it does a specific task, or what data is uploaded.
With all that said, we expect the Spring Update to begin going out to more of the fleet in the coming days. We’re currently seeing about 58% of the fleet on the Spring Update, and only 30% of the fleet on the older 2025.8 January Update.
Not A Tesla App received information that an upcoming update was set to bring features from other AI4 vehicles to the Cybertruck, including Start FSD from Park, Unpark, Actually Smart Summon, and more. This update was intended to bring it closer to feature parity with the rest of Tesla’s AI4 fleet, but for now, Cybertruck remains the redheaded stepchild of the fleet.
We’re still confident that Tesla is working on this, and the continued delays on the release of an FSD update could point to the Cybertruck and a lack of data continuing to be a pain point for Tesla’s AI team. Cybertruck owners, including the author, have noted that FSD-equipped Cybertrucks continue to upload several hundred gigabytes or more of data per month. This topped out at nearly 1.9 TB of data uploaded in April 2025 for the author.
That’s a massive amount of data - and other users on social media have mentioned much the same for their own Cybertrucks. Tesla needs as much data as possible to tune the FSD models, and given the small fleet size for the Cybertruck, it requires a vast amount of data per user.
“Major Improvements”
While Elon didn’t mention what constitutes these major improvements, we have a lot of expectations besides what we know about the Cybertruck. Learning from the recent and successful FSD launch in China, Tesla is now able to utilize a more generalized model without specific local training data. This could potentially translate into better performance in North America as well, as the 7.7 million miles globally driven on FSD every day are feeding back into Tesla’s data loop.
We’re hopeful that future improvements continue to focus on improving tracking and decision-making, as well as lane handling. FSD users on X continue to point out issues with lane selection and lane keeping in the latest versions of FSD. On the flipside, Tesla has greatly increased the comfort and smoothness of FSD - and V13 is a prime example of that.
While V13.2.8 is also capable of pulling into parking stalls both forwards and in reverse (thanks to one of those flag changes recently), it does an oddly poor job of parking. Tesla’s Vision Autopark, on the other hand, is exceptionally accurate, even with big vehicles like the Cybertruck. It feels like Tesla is working on the parking lot stack to prepare for the upcoming launch of Robotaxi in June.
What About FSD V14
Back in the Q4 2024 Earnings Call, we heard about FSD V14, and just learned a little bit of what will make it unique. In this case, it's auto-regressive transformers that will improve FSD’s already powerful perception system and help it to predict better how other vehicles and road users will behave around it.
That, alongside a larger model and increased context size, will help FSD manage edge cases and make better decisions. The larger model and context size increases are likely another challenge for Tesla, which is already pushing the hardware limits of AI4 with FSD V13.
We did a deep dive into what we know about V14, which you can read here.
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