It's been a while since HW3 owners have received a new FSD update, with the latest update coming with FSD version 12.5.4.2. While this version added vision-based attention monitoring with sunglasses, it’s still far behind the latest features available on FSD v13.2.1.
Tesla shared their FSD roadmap twice in the past few months, but HW3 was mostly left out, except for a single bullet point that stated there would be improved V12.5.x AI models for city driving.
We’ve recently seen HW4 vehicles receive much larger AI models, camera improvements that include processing video feeds at full resolution and 36 FPS, and much more. FSD V13 also gained features such as the ability to reverse and start FSD from park, amongst others.
It’s clear that HW3 is not powerful enough to run these latest FSD models, but HW3 owners are right to feel left out and disappointed with Tesla selling vehicles with HW3 up through the middle of 2023. Elon Musk has stated that Tesla will upgrade HW3 cars if needed, but are left in the dark in terms of what the upgrade will be and when it’ll become available.
Since that comment from Musk and Tesla’s updated roadmap in late October, Tesla hasn’t shared any additional news on HW3, until now.
Ashok Elluswamy, VP of AI at Tesla, has confirmed on X that an FSD update for HW3 owners is coming before the end of the year. Putting aside the 2 weeks joke, he did confirm that FSD V12.6 will be on its way for HW3 vehicles by the end of the year - which just happens to be about 2 weeks away.
FSD V12.6
WholeMarsBlog on X
It seems that the V12.6 build will be unique to Hardware 3 - as there haven’t been any builds with that FSD version yet. The closest build that we have to look at is FSD V12.5.6.4, which only went out to HW4 vehicles. We expect FSD V12.6 to include everything in 12.5.6.4 with possibly some additions.
FSD V12.5.6 brought a lot of improvements. We covered all of the features in FSD 12.5.6 previously, if you want a detailed breakdown and photos of all the features. However, here’s a high level overview of everything that version included:
Better and More Natural Lane Change Decisions
Updated Speed Profiles, including Hurry Mode
Auto Speed Changes
End-to-End Highway Stack
Audio Data Collection
These changes greatly improved FSD on HW4, so we’ll have to wait and see if they provide similar improvements for HW3 vehicles. The more natural decisions should improve overall smoothness and get rid of the jerky-wheel syndrome and green-light braking that has become synonymous with V12.5.4.2. Alongside better lane selection, this makes the entire experience much smoother and more fitting of Full Self Driving.
The updated speed profiles are applicable on both roads and highways (up to 50 mph with this version), which means you’ll get an updated Chill Mode (with Minimal Lane Changes), Standard Mode, and the new Hurry Mode, which is focused on driving faster and making more frequent lane changes.
Auto Speed has also been removed in favor of Max Speed, which will let you define an overall max while letting FSD still pick its overall speed up to that maximum set speed. You can adjust the hard max by using your scroll wheel to slow down or speed up the vehicle.
However, the biggest feature in this update is the new End-to-End Highway Stack, which finally brings the benefits of FSD V12 on city streets to highway driving.
The final feature that we’re expecting in FSD V12.6 is the ability to collect audio data to begin training for hearing emergency vehicles. This one will be big and it’s what will make FSD feel very human-like. Tesla is starting off with detecting emergency vehicles, but you can expect them to start detecting much more than that soon.
Tesla hints at that in their release notes, saying that audio sharing will be used for features such as emergency vehicle detection. Expect FSD to react to more in the future, such as vehicles honking or someone yelling. Tesla also said that they’ll be looking to have the vehicle honk when needed.
Why FSD 12.6
It’s interesting that Tesla is choosing to name this version FSD 12.6 instead of FSD 12.5.6.x, like they’ve done in the past. This points at some additional improvements being included, but it’s not clear what they could be. Could Tesla bring down some improvements from FSD V13, or add some features such as the ability to reverse?
Tesla may want to stay away from the FSD V13 name if the HW3 version isn’t going to perform as well as FSD V13 on HW4, but at the same time, they could simplify some FSD V13 features and make them available for HW3 owners.
What’s in FSD V13
Let’s take a quick look at all the features in FSD V13 that weren’t in FSD 12.5.6.x. FSD V13 includes significant improvements to the FSD model that just won’t fit into HW3 that are likely responsible the the smoothness seen in FSD V13. This includes a much larger model, full camera resolution, higher frame rates, and more, but FSD V13 also includes these additional features:
Speed Profiles on both City Streets and Highways (available on all roads and speeds)
Integrated unpark, reverse, and park capabilities
Start FSD from Park
Improved reward predictions for collision avoidance
Improved camera cleaning
Redesigned controller for smoother, more accurate tracking
Dynamic routing around road closures, which displays them along an affected route when they are detected by the fleet
While the larger model of FSD V13 is not expected to be available for HW3 vehicles, some of these other features have the possibility of making the cut in V12.6.
Legacy Vehicles
There’s no news on Model S and Model X legacy vehicles with MCU 1 receiving the same update just yet. Teslas with MCU 1 did receive FSD V12.3.6 on update 2024.26.3.1, but we haven’t seen anything indicating there will be another update coming soon. However, getting FSD 12.6 out for HW3 with MCU 2 could be the precursor to it becoming available for older MCU 1 vehicles.
We’re super excited to hear Tesla talking about HW3 vehicles and that an update is coming in just a couple of weeks. While it’s not FSD V13, it could provide massive improvements until a hardware upgrade becomes available for HW3 owners.
Subscribe
Subscribe to our newsletter to stay up to date on the latest Tesla news, upcoming features and software updates.
Tesla offers owners an easy-to-use battery health tool, which allows users to view the degradation of their vehicle’s battery and improve the range estimate.
Battery Health
Like all batteries, electric vehicle batteries naturally degrade over time as a result of the chemical reactions that occur during charging and discharging cycles. Other factors also play a role, but the number of charge cycles and how long the battery stays at low or high states of charge play one of the biggest roles.
Your battery’s health refers to how much of its original energy capacity remains. For example, a battery at 85% health has lost about 15% of its capacity, meaning your vehicle will deliver roughly 85% of the range it had when new.
Battery Degradation
Battery degradation is worst in the first few months of ownership, and you will see the steepest degradation (1-3%) as your vehicle settles in. Part of this initial decline is due to the Battery Management System (BMS), which recalibrates to provide a more conservative and accurate estimate of your vehicle’s range and charging capacity.
According to Tesla, vehicle batteries generally degrade at a rate of about 15% per 200,000 miles, with the first year of ownership accounting for approximately 5% of this degradation. Battery degradation is less of an issue in modern EVs than many people think, because the BMS systems have become much more accurate and intelligent.
Tesla offers a long warranty on its vehicles, covering both the battery and the drive units. These warranties cover up to 70% pack retention, meaning that if your battery health degrades below the 70% mark while under warranty, Tesla will replace your battery pack.
Tesla provides a drive train and battery warranty on its vehicles, which is longer than the standard vehicle warranty. This warranty guarantees the battery will have at least 70% of its original capacity within the given time period. If your battery health drops below that threshold during the coverage period, Tesla will replace the battery pack.
The warranty varies slightly based on your Tesla model and configuration, which is outlined below:
Vehicle
Warranty
Model S, Model X, Cybertruck
8 Years / 150,000 mi (240,000km)
Model 3 / Model Y RWD
8 Years / 100,000 mi (160,000km)
All Other Model 3 / Model Y
8 Years / 120,000 mi (192,000km)
How to Test Battery Health
Not a Tesla App
While you can usually get a fairly accurate estimate of your Tesla’s battery health by calculating the amount of miles the vehicle could travel when charged to 100% and comparing that to the vehicle’s original range, Tesla has also added a tool to give you a better estimate.
Tesla has a user-friendly method of testing your vehicle’s battery health. The tool is practically identical to the one available through Service Mode, and the test and results are the same.
In order to test your vehicle’s battery health, you can navigate to Controls > Service, and then scroll down and select Battery Health. Upon tapping the button, the vehicle will display requirements for the battery test and the date and health of your last battery test.
Battery Health Test Requirements / How Long It Takes
Your vehicle will need to plugged in to a Wall Connector or Mobile Connector for up to 18 hours to run the battery test. The charger will need to be able to provide at least 5 kW of power, which is roughly about 20 amps at 240v.
The total amount of time the test will take will vary based on your vehicle’s battery size, your charging speed and the current battery level. If you’re unable to finish a battery health test and need the vehicle before it has completed, you can stop the test at any time.
Your vehicle will also need to be at a 20% or less state of charge, so you’ll need to plan accordingly.
The other requirements should be straight forwar and are listed here:
Vehicle is in Park
Battery level is at 20% or less
Vehicle is connected to the Internet
No software updates are scheduled
No battery or thermal alerts are active
Vehicle is connected to an AC charging station
AC charging equipment can provide at least 5 kW of power
Running the Battery Test
During the battery test, your vehicle will discharge and charge your battery to calibrate the BMS. Therefore, the lower the state of charge, the quicker the test will run and less energy will be wasted.
Your vehicle will run the motors and heat pump or heater to help discharge energy until the batteries are nearly empty, and then begin charging.
During the test, you may hear your vehicle’s fan run at maximum speed and become very loud, especially in an enclosed garage while the vehicle is discharging. This is normal and your vehicle is just using up energy.
Battery Test Results
Not a Tesla App
Once the battery test has completed, you’ll receive a notification in the Tesla app. You can check the results in the vehicle or in the Tesla app by navigiating to Service > Battery Health.
Most vehicles will have a degradation range between 10-20%, depending on your charging habits, age and use of your battery.
If you receive a result that’s 70% or less and are within the warranty period, you should reach out to Tesla for a replacement.
Since your battery test will recalibrate the vehicle’s BMS, you may see your vehicle’s range adjusted after the test. Keep in mind that the range of your vehicle hasn’t been affected and the vehicle is simply displaying a more accurate estimate of its range.
Note: Once the battery test completes, the vehicle will keep your battery at 100%, which isn’t a good practice for battery health. It’d be a good improvement if Tesla used up energy to bring the battery level back to the charge limit if the vehicle isn’t used after an hour or two.
You should not leave your vehicle at 100% unless you have a LFP battery. Plan to go for a drive shortly after the battery test completes. If you can’t drive, we recommend running the climate system to use up some energy.
Test Limitations
Since Tesla’s battery test uses up energy and discharges your battery to near 0% and then charges it to 100%, it’s best not to perform it often. Tesla also only allows one battery test every six months, unless you go into Service Mode to perform the battery test.
Tesla offers users some specific tools under its service menu (Controls > Service). These tools include features such as Car Wash Mode and Tow Mode. Just like other vehicle features, these are also updated and improved over time.
As Tesla vehicles use electric motors, towing them with any wheels on the ground could cause the motors to backfeed energy, generating considerable amounts of heat. If done for an extended period of time, especially at higher speeds, it could cause damage since the vehicle isn’t running its coolant loop to dump waste heat.
To help solve this problem, Tesla provides Tow Mode, which breaks down the steps needed to tow a Tesla. It also provides an easy way to put the vehicle in neutral and disengage the parking brake.
The improvement to Tow Mode now displays a checklist similar to Car Wash Mode. Each item in the list will light up green or red, depending on whether it’s already in the correct setting for Tow Mode.
Tesla has also added a readout of the low-voltage battery. While this could be useful for anyone wanting to check the current on their LV battery, it’s an important detail to be aware of if you’re towing because the vehicle’s high-voltage battery has been run down. All of the vehicle’s electronics are powered by the LV battery, and depleting it could cause the display to not turn on, as well as prevent access to certain vehicle features.
The vehicle shown in the diagram is also unique to the vehicle you are driving - a Model 3 will display a Model 3, while the Cybertruck will display a Cybertruck - just a subtle touch of Tesla precision to the entire presentation.
You can activate or check out Tow Mode from Controls > Service > Tow Mode.
Tire Service Improvements
Tesla has also improved its Tire Service menu, which is now tied into Maintenance History. These menus allow you to switch the wheels and tires your vehicle is using. It’s important to note that the wheel is not only used in the vehicle’s visualization, but also has impacts on the vehicle’s ability to accurately predict its range.
In the Tire menu, Tesla has added a Service Type dropdown, allowing you to select why you’re switching your tires. You can choose whether you’re rotating your tires, replacing them, or swapping them out for seasonal tires. This change will then be recorded in Maintenance History, allowing you to track the maintenance of your tires, including the date of the last maintenance and the ability to see the mileage on your current set of tires.
You can navigate to the Wheel and Tire menu by going to Controls > Service > Wheel & Tire.
The updated Wheel and Tire menu
Not a Tesla App
Cybertruck
As a note, the Tire Service improvements are not fully implemented in the Cybertruck in the primary menu. If you wish to mark a Seasonal Tire Change in your Cybertruck, you’ll need to head into Service Mode and add a Correction Code for Seasonal Tire Change from there.
We expect Tesla to fix or add this in an upcoming update for the Cybertruck.
![Tesla’s Missing Voice: Why a PR Team Matters More Than Ever [Opinion]](https://www.notateslaapp.com/img/containers/article_images/multiple-models/group_93.jpg/4e1056961f0480c7b9eff43dd2ec288e/group_93.jpg)
_300w.png)
