Tesla has been continuously improving and adding features to its Service Mode feature, and update 2024.44 is no exception.
Tesla also recently launched Service History for vehicles. With the new additions to Service Mode and price cuts to ToolBox 3 (TB3), their in-house service software, Tesla is really pushing Service accessibility.
If you’re interested in knowing more about Service Mode in general, check out our Guide to Service Mode.
Service Mode Improvements in 2024.44
This update introduces several new Service Mode features, so we’ll break down each new feature in Service Mode for 2024.44. Thanks to @max_bracco on X, who shared these photos with us.
Brakes Panel
The Brakes Panel has been updated to allow for the diagnosis of wheel speed sensors, which were previously only accessible in TB3 while physically connected to the vehicle. In addition, information on the Electronic Parking Brake, Electronic Stability Program and iBooster (Electromechanical Brake Booster) are now available in the Brakes Panel as well.
This new panel is under Chassis > Brakes and has multiple subpanels with brake details. This update is exclusive for the Cybertruck.
Brake Burnishing Update
Brake Burnishing is a process to help condition or break in your brakes, helping to make sure you’ll get optimal performance out of them. It can also be used as regular maintenance for an EV - because you’ll rarely use your friction brakes with Tesla’s one-pedal driving.
The update to Brake Burnishing will now allow you to continue performing this service task even if the vehicle goes into reverse. Previously, any UI, including the rear-view camera, popping up would cancel Brake Burnishing and close the service window - meaning you’d have to restart.
Placing the vehicle back in drive automatically resumes the service task, which makes it easier to do so in a smaller location.
This improvement applies to all vehicles, including legacy Model S and X.
Speakers Panel and Audio Test
A Speakers Panel has become available for some vehicles to help diagnose issues with any of the internal vehicle speakers. You’ll be able to play test tones through any selected speaker or set of speakers. This could be helpful to figure out if a speaker isn’t working properly or to diagnose a rattling speaker or subwoofer.
As part of the Audio Test, you can also play specific frequencies - helping to figure out what exactly is wrong with the speaker. Previously, you’d have to use TB3 to perform this test, so it's nice to see Tesla moving things to Service Mode and increasing accessibility for owners and third-party technicians.
This new speakers panel is only available for the 2024+ Model 3, and the Model Y with the AMD Ryzen infotainment processor.
SCCM Update
The Steering Wheel Control Column (or Yoke) has received updated graphics to correctly display what you’ve got equipped in your vehicle. You’ll also be able to initiate the steering wheel/yoke swap on a Model S or Model X in this UI as required, assuming you’re swapping them.
Previously, this feature was only accessible to Tesla’s Service Technicians or through a fairly complex procedure in TB3 that required outside scripting support - well beyond the knowledge and skills of most third-party technicians who aren’t intimately familiar with TB3. This makes the procedure something that can be done by the user at home - as long as you’re following the Service Manual carefully.
This is only applicable for the Model S and Model X. The Cybertruck has a special Steer-by-Wire panel in Service Mode.
Interior Lighting Diagnostics
Not a Tesla App
The last item to get added to Service Mode is an entirely new panel for testing the ambient lighting system, which is availablle for the new Model 3 and Cybertruck. This panel allows you to diagnose and repair the vehicle’s RGB lighting. It also allows you to view the health state and run an RGB lighting addressing routine, which is required when replacing some of the lighting strips.
Earlier this summer, Tesla also added a Battery Health Test to Service Mode.
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In a new video posted to X, Tesla is showing the progress of its first Lithium Iron Phosphate (LFP) cell manufacturing factory in North America. The facility, located in Sparks, Nevada, will be used to produce LFP battery cells for Megapacks and Powerwall.
However, the implications of this new factory extend beyond Tesla Energy. By on-shoring the production of these cost-effective batteries, Tesla is not only securing its energy supply chain but also opening the door to potentially reintroducing LFP-based vehicles in North America.
Nearing completion of our first LFP cell manufacturing factory in North America pic.twitter.com/OLNRWajz4l
The immediate beneficiary of the new Nevada LFP facility is Tesla’s Energy division. LFP chemistry is ideal for stationary storage products like Megapack and Powerwall. It offers a very long life cycle, is extremely thermally stable and safe, and is significantly cheaper to produce than nickel-based batteries, partly because it contains no cobalt.
Until now, Tesla has relied on suppliers like CATL in China for these cells. A dedicated, domestic supply will enable Tesla to dramatically ramp up Megapack production to meet North America’s increasing demand for grid-scale energy. On the other hand, Megafactory Shanghai continues to utilize CATL’s LFP batteries and will support the rest of the world.
Tesla first revealed that they were planning to onshore LFP production in North America at the Q1 2025 Earnings Call, which will help them avoid costs, innovate in new technology, and insulate themselves from geopolitical supply chain risks.
A Potential Return for LFP Vehicles?
Another exciting application for Tesla is what this new factory means for Tesla’s budget-oriented lineup. For years, Tesla has been constrained in its ability to offer LFP-based vehicles in North America. While LFP packs are used in other markets for specific standard-range RWD vehicles, tariffs on important Chinese cells made it difficult to import these cells for use in North America.
With a domestic supply of LFP cells produced in Nevada, this tariff-related barrier will be mostly eliminated, pending the sourcing of lithium from a North American site. This is likely to lead to the reintroduction of LFP-based vehicles to the North American market, possibly in late 2026 or 2027.
An American-made LFP pack could lead to a more affordable base Model 3 or Model Y, or potentially help Tesla cut costs on the next-generation Affordable Model even further. This helps to give customers a lower-cost entry point without sacrificing a lot of range, and with the added benefit of being able to regularly charge to 100%.
Mega Nevada
With Mega Nevada now progressing well, Tesla is in an excellent position to continue iterating on its vertical integration and scaling Megapack and Powerwall—two of Tesla’s fastest-growing businesses—further. There are tons of benefits for consumers in the future as Tesla continues down this path, with more affordable Powerwalls for the home, cheaper electricity prices thanks to grid-forming Megapacks, and cheaper LFP vehicles.
The next major upgrade for Tesla’s in-car experience is pretty much already here - just hiding beneath the surface, awaiting the flick of a switch. According to new details uncovered by Tesla hacker Greentheonly, a fully functional version of the Grok conversational AI assistant is already present in recent firmware builds, just waiting for Tesla to activate it.
The feature, which is currently behind a server-side switch, could be enabled at any time by Tesla for vehicles running update 2025.20 and newer. The findings provide a better picture of what we already learned from Green’s breakdown on Grok last month.
Grok’s Requirements
@greentheonly on X
According to what Green determined from the latest software builds, the foundation for Grok was laid with update 2025.14, with more abilities and functionality added in 2025.20 to flesh it out. He also determined exactly which vehicles will be receiving Grok.
In terms of hardware, any vehicle with a Ryzen-based infotainment computer will receive Grok. This means that vehicles with the older Intel Atom processor will not be supported, at least initially. The underlying Autopilot hardware is not a factor, as Grok’s processing is not done in-vehicle.
Grok will also require premium connectivity or a Wi-Fi connection for the vehicle. At this point, we’re not sure whether Grok in your Tesla will also require you to sign up for SuperGrok, X Premium, or X Premium+, but Tesla is requiring you to sign into your Grok account. It’s just not clear whether the free version of Grok will work, or if you’ll need the premium version.
Grok User Experience
@greentheonly on X
Green also revealed the user interface for Grok for the first time. You’ll find many of the same features from the Grok app, but surprisingly, it looks like it’ll have a dark UI, even if you’re using light mode in your vehicle.
It appears that there will be a Grok app, likely for settings. However, Grok will largely operate in a modal, similar to voice commands, which are displayed near the bottom left corner of the screen.
There’s an on-screen microphone button, as well as drop-down menus for the voice and type of assistant you’d like to use.
Similar to the Grok app currently on mobile devices, you’ll be able to select from a set of voices and then define their personality. The available voices for now are the standard Ara (Upbeat Female), Rex (Calm Male), and Gork (Lazy Male).
There’s also a settings button, which, when expanded, allows you to enable or disable NSFW mode (including swearing and adult topics), as well as a Kids Mode, which will tone Grok down to be suitable for when kids are in the car.
@greentheonly on X
How Grok Will Work (Button / Wake Word)
Users will be able to activate Grok by pressing a button, likely the same one that activates voice commands today. Grok will then remain enabled for the duration of your conversation, allowing you to go back and forth, asking and answering questions. To end your conversation, you’ll press the mic button again.
While it doesn’t appear to use a wake word yet, Green says that some code refers to a wake word, so it’s possible that this could be an option Tesla plans to activate in the future.
Replacing Voice Commands
The most significant implication of Grok’s future integration is in its potential to fully replace the existing and relatively rigid voice command system. Green notes that internally, this feature is part of the car assist module, and that eventually, the plan is for Grok to take over car control functions.
Unlike the current system, which requires specific phrases, a true conversational AI like Grok can understand natural language. This will enable more intuitive requests, completely changing how drivers interact with their car.
Language Support
@Greentheonly/X
Grok will also launch with multi-language support, similar to its current abilities in the Grok app. Green says that it already appears to have support for English and Chinese and one or two other languages.
Release Date
Grok appears ready to go from a vehicle standpoint, but Green wasn’t able to actually test it out. While development appears to be nearly complete in the vehicle, Tesla and xAI may still be working on some server-side changes to better integrate with the vehicle. If they plan for Grok to replace voice commands on day one, then it’ll need to be trained and be able to execute a variety of vehicle commands.
It’s possible Tesla is actively testing Grok or adding server-side changes to replace voice commands. However, it looks like vehicle development is nearly complete and Grok could launch as soon as the next major Tesla update, which is expected to be update 2025.24.
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