Tesla Bioweapon Defense Mode: What It Is and How It Works

You can activate Bioweapon Defense Mode from the climate section of your Tesla

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Tesla is known for its advanced technology and innovative features, and 'Bioweapon Defense Mode' is one of those features. With increasing concerns about air pollution worldwide, this advanced air filtration system demonstrates Tesla's commitment to passenger safety and well-being.

What is Bioweapon Defense Mode?

Bioweapon Defense Mode is a state-of-the-art air filtration system designed to protect vehicle occupants from various air pollutants, including exhaust fumes, smoke, allergens, airborne pathogens, and other potentially hazardous particles. This feature uses a High-Efficiency Particulate Air (HEPA) filter, capable of capturing 99.97% of particles as small as 0.3 micrometers in diameter, and a secondary filtration system with activated carbon filters to remove odors, gases, bacteria, viruses, pollen, and mold spores.

Tesla's Inspiration and Development of Bioweapon Defense Mode

Tesla's commitment to protecting passengers from air pollution goes beyond merely producing electric vehicles to contribute to a cleaner environment. Tesla CEO Elon Musk has credited Google co-founder Larry Page for inspiring him to develop a more powerful air filtration system for Tesla vehicles. The idea is not only to reduce local air pollution but also to minimize the direct impact of air pollution on the occupants of Tesla vehicles.

How Does Bioweapon Defense Mode Work?

The HEPA filter in Bioweapon Defense Mode is inspired by air filtration systems used in hospitals, clean rooms, and the aerospace industry. When activated, the climate control system pulls in outside air and filters it through the HEPA filter and secondary filtration system. This process effectively removes harmful particles and contaminants from the air.

In addition to the filtration process, Bioweapon Defense Mode creates a positive-pressure environment inside the cabin. This feature, borrowed from hospital settings, prevents outside air from leaking into the vehicle. The result is an air-tight cabin that continuously filters and circulates clean air to protect passengers from pollutants, pathogens, and allergens.

Which Tesla Models Have Bioweapon Defense Mode

Tesla introduced the HEPA filter and Bioweapon Defense Mode in 2016 on the Model X and Model S with the new front fascia. As of 2020, Bioweapon Defense Mode also became standard on Model Y. Tesla could not include the large HEPA filter required for the Bioweapon Defense Mode in Model 3 due to space constraints. However, the bigger Model Y does have enough space to accommodate the filter. Tesla initially introduced the filter and Bioweapon Defense Mode in electric SUVs produced in China and later made it a standard feature in all Model Y vehicles produced.

How to Check If You Have Bioweapon Defense Mode

Tesla owners can confirm whether their vehicle is equipped with Bioweapon Defense Mode by opening the HVAC control screen and looking for the biohazard symbol. If the vehicle is equipped with Bioweapon Defense Mode, there will be a biohazard icon located near the top right of the screen, next to the recirculation icon. If the symbol is present, the vehicle has the feature.

How to Turn On Bioweapon Defense Mode

You can activate Bioweapon Defense Mode from within your car or through the Tesla mobile app.

To activate it within the car, go to the climate control screen and tap the biohazard symbol. The vehicle will immediately start using air from outside the vehicle and running it through its HEPA filter.

To enable the filter from your Tesla app, you can go to the Climate section then swipe up from the bottom. This will reveal several options, including Bioweapon Defense Mode.

Bioweapon Defense Mode Retrofits

For Model S and Model X owners without the HEPA filter, Tesla offers a retrofit option for $500, which includes shipping and installation at a Tesla service center.

Tesla does not offer an official retrofit for for the Model Y, although some owners have shown that it is possible through a DIY solution.

Scientific Testing of Tesla's Bioweapon Defense Mode

When Tesla first introduced the Bioweapon Defense Mode in the Model X in 2015, the company released test results with particulate matter 2.5 air quality readings. The results showed that the system significantly improved air quality when needed. This further validates Tesla's claims about the effectiveness of its advanced air filtration system in protecting passengers from air pollution and other harmful particles.

Demonstrating the Effectiveness of Bioweapon Defense Mode

Tesla's test shows on Bioweapon Defense Mode cleans the air inside of the vehicle after just a couple minutes

Tesla

Tesla has conducted experiments (video below) to demonstrate the effectiveness of its HEPA filtration system and Bioweapon Defense Mode. In one such experiment, a Tesla Model Y and a BMW X3 were parked inside a giant bubble, and smoke bombs were detonated. The Model Y had Bioweapon Defense Mode activated, while the BMW X3 relied on its standard filtration system.

During the experiment, a Tesla employee sat in the driver's seat of the Model Y to showcase the company's confidence in its product. The video showed that the cabin of the Model Y remained free from red smoke, while the interior of the BMW X3 was invaded by it. After the experiment, Model Y's activated carbon filters and HEPA filters were removed, revealing that they had captured a significant amount of red dust.

The filtration system is active whenever climate control is pulling in outside air. In extreme conditions, users can activate Bioweapon Defense Mode, which positively pressurizes the vehicle’s cabin, preventing pollutants from leaking. All air is filtered through the HEPA and gas media filters in this mode.

The Importance of Air Quality in Vehicles

Air pollution is a global issue, and prolonged exposure to air pollutants, such as when stuck in traffic, can have significant health effects, including respiratory and cardiovascular issues. With more time spent in vehicles, ensuring that the air inside the cabin is clean and safe for passengers is crucial. Tesla's Bioweapon Defense Mode addresses this concern by providing a superior air filtration system that reduces exposure to harmful pollutants. This feature not only contributes to the overall well-being of passengers but also sets Tesla apart from other automakers who may not offer such advanced air filtration systems.

Comparison with Other Automakers

The HEPA filter and activated carbon filters in the Model Y

Tesla

While other automakers offer air filtration systems in their vehicles, few can match the level of protection provided by Tesla's Bioweapon Defense Mode. For instance, the BMW X3, which was used in the previously mentioned experiment, does not offer a feature similar to Bioweapon Defense Mode. The experiment highlighted the stark contrast between Tesla's advanced air filtration system and the standard filtration systems found in other vehicles, emphasizing Tesla's commitment to innovation and passenger safety.

Tesla's Bioweapon Defense Mode is a groundbreaking feature demonstrating the company's dedication to passenger safety and well-being. By offering an advanced air filtration system capable of protecting occupants from various air pollutants, Tesla sets itself apart from other automakers in the industry. As air quality continues to be a significant concern worldwide, the Bioweapon Defense Mode is a valuable asset for Tesla owners, ensuring they can breathe clean and safe air inside their vehicles.

Tesla Cybertruck Now Qualifies for EV Rebate; Single Motor RWD Confirmed

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In an updated filing to the US Department of Energy, the Cybertruck is now eligible for the $7,500 USD EV tax rebate. However, what’s most interesting is that this same filing also confirmed the upcoming production of the Single Motor Rear Wheel Drive - for model year 2025.

Rear Wheel Drive

The Rear Wheel Drive Cybertruck was initially announced at the original Cybertruck reveal, but when the Foundation Series was announced, only the Tri-motor Cyberbeast and Dual Motor AWD models were made available. Tesla initially indicated that the RWD model would arrive sometime in 2025, but that text was later removed from the website.

In the second half of 2024, Tesla launched the non-Foundation series, but it once again arrived without mention of the RWD variant. Many have expressed a great amount of interest in the RWD variant, especially given the higher-than-expected pricing of the Cybertruck at launch.

Cybertruck EV Rebate

In addition to the reveal of the 2025 RWD variant, the Cybertruck is now also eligible for the US Federal EV Tax Rebate. For buyers of the vehicle, that means the AWD Cybertruck is now eligible for the full rebate if you don’t add any additional options since it needs to stay under the $80,000 cap.

FSD can still be added for $8,000 since it’s not considered a vehicle add-on and won’t count toward the total price of the truck. The incoming US Administration has already said it intends to cancel the US Federal EV Tax Rebate sometime in late January, so if you’ve been on the fence, this may be a good opportunity to buy the truck.

Here’s an updated price table for the Cybertruck, which includes pricing with and without the rebate for all three variants.

*RWD price has not been confirmed at this point.

The price for the RWD Cybertruck above is the price Tesla showed on their site before it was removed in August 2024.

If you use a referral code alongside the tax rebate, the AWD starts at $71,490. Some lease incentives can also drive that price down slightly if you choose a lease and then do a lease buyout at the end.

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First Look at Tesla FSD V12.6 and How It Compares to FSD V13

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A couple of weeks ago, Ashok Elluswamy, Tesla’s VP of AI, announced that Tesla would finally roll out an FSD update for vehicles with Hardware 3. Earlier this week, on December 30th, Tesla did just that and started a public rollout of FSD V12.6.

Since the initial rollout, the update has gone out in several other waves, but they’ve been extremely small. Thanks to several users, we know have our first look at FSD V12.6 and how it compares to the previous FSD version and to the latest version for Hardware 4 vehicles — FSD V13.2.2.1.

How FSD V12.6 Compares to 12.5.4.2

Vehicles receiving the FSD V12.6 update are coming from Tesla’s Holiday update, version 2024.44.25.2, which includes FSD V12.5.4.2.

While FSD V12.5 was a big step up from FSD V12.3.6 for most users, it did include its share of issues. The big two have been lane selection and behavior at traffic lights.

While the release notes for FSD V12.6 highlight features such as End-to-End on Highway, Improved City Streets Behavior, and Smoother and More Accurate Tracking, FSD V12.6 is noticeably smoother and more capable. It now handles turns and scenarios that it struggled with or simply couldn’t perform on FSD V12.5.

How it Compares to FSD V13

One of the key features of FSD V12.6 is a redesigned controller for smoother and more accurate tracking. This feature actually comes from FSD V13, so users should think of FSD 12.6 as a hybrid between FSD V12 and FSD V13. In fact, it seems like Tesla considered calling this version V13, but more on this later.

The controller referenced in the release notes is responsible for tracking objects around the vehicle. The vehicle can only drive as well as it can see, so the improved tracking accuracy directly improves FSD decision-making, leading to smoother driving. This is very evident in FSD V12.6, which now delivers a level of smoothness comparable to what users are experiencing in FSD V13.

Thanks to Rhys Samson, who has both FSD V12.6 and FSD 13.2, they directly compare the two versions and say that FSD V12.6 now operates as smoothly and confidently as his Cybertruck on FSD V13.2.

In their eyes, FSD 12.6 has done a lot to reduce, if not eliminate, the anxiety of not having AI4/HW4 in their Model S. This may change as AI4 vehicles continue to receive improvements while HW3 vehicles are expected to lag in FSD updates, but FSD V12.6 is a big step forward and could have arguably been called FSD V13.

Which Vehicles are Receiving V12.6

Right now, FSD V12.6 is only rolling out to Model S and Model X vehicles with Hardware 3. So far this has only been “refreshed” models, so it doesn’t include Model S/X cars prior to 2021. When the update was released on December 30th, Ashok Elluswamy stated that the update would be available for “other platforms,” presumably the Model 3 and Model Y, within a week. This puts us at around January 6th for other models. Ashok’s timelines have been extremely accurate and we believe Tesla will deliver this update sometime next week.

The Model 3 and Model Y are expected to be supported, but it’s not clear whether it’ll also include legacy Model S/X vehicles as well.

We expect this release to eventually become available for everyone soon, the only question would be whether it’d become available for legacy S/X vehicles with MCU 1. While the upgrade to MCU 2 isn’t cheap, any owners with an MCU 1 vehicle and HW3 would receive a much more capable vehicle by upgrading to the newer infotainment unit.

What About FSD V13 for HW3?

Rhys Samson

While we expected Tesla to release an FSD update for HW3 vehicles with the new end-to-end highway stack, FSD V13 was more of a wildcard. Would Tesla wait to upgrade HW3 vehicles with newer hardware or spend the time creating a smaller V13 model for HW3 vehicles?

Due to a small bug, it looks like we may have some insight into this question. Users who have installed FSD V12.6 will notice that while the release notes and the vehicle will call update 2024.45.25.10 FSD V12.6, the version shown in the app is actually quite different.

At the bottom of the main screen in the Tesla app, Tesla will show several bits of information, including your vehicle’s software version and the FSD version. While the vehicle software is correctly labeled as 2024.45.25.10, the FSD version actually mentions an unreleased FSD version — v13.2.3.

While this could simply be a bug or a typo, it could also be an indication that Tesla was considering calling this release FSD V13.2.3 and that it may have been a last-minute decision. While this may not mean much, it could be a sign that is already thinking about or developing FSD V13 for HW3 vehicles.

Keep in mind that many features for FSD V13 take advantage of the more powerful hardware, such as larger AI models and improved video feeds. However, other features could potentially be carried over to HW3.

Roll Out

While FSD V12.6 is still only available for the Model S and Model X, it continues to go out in increasingly larger waves. The last wave occurred overnight, and there’s a possibility of us seeing more today. Given the continued waves, it looks like everything is on track for a release to other models this weekend or early next week.

You can keep an eye out on our statistics page to track additional roll outs, and we’ll be sure to cover the release when it becomes available to more vehicles.

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