Tesla usually packs a bunch of smaller, undocumented changes into every update, and this year’s holiday update isn’t any different. In fact, the holiday update contains massive improvements under the hood, especially for vehicles with the Intel Atom processor. The undocumented changes in this update are just as good as the features themselves, and for some owners, they may be even more of a gift than what Tesla has outlined in the release notes.
Come with us as we go through each feature that may have gone under the radar.
Update: Since we originally published this article, there have been an additional two undocumented changes found. They’re listed below.
Explicit Audio Content
The explicit content setting now applies to Apple Podcasts in addition to the 'Streaming'
Not a Tesla App
In the Audio Settings Options section, Tesla lets you block explicit content. Until now it only applied to the music service Tesla calls ‘Streaming,’ which is Slacker. However, with update 2023.44.30, this now applies to the new Apple Podcasts app as well. Unfortunately, it still does not apply to other streaming services such as Spotify or Apple Music yet.
More Wheel & Tire Options
New wheel options
Roz_420
Under the Wheel & Tire section, you can now select from additional wheel options. Tesla has added two new Gemini wheel options. Although the metallic aero wheels are only available in China, you can now select them from the Wheel & Tire menu in other regions as well. This will update your vehicle’s visualizations on screen and in the app to show these wheels instead of the vehicle’s default wheels.
The other new option introduced is the Gemini Cap Kit wheel option, which is the same Gemini wheel, but with the covers removed and with the bolt covers, known as the cap kit added.
Switching your wheels in these menus will cause the infotainment system to restart.
Improved Transition to Cellular
Tesla has improved their transition from Wi-Fi to cellular connections
Previously, if a vehicle was connected to WiFi, it would often not have an internet connection for a period of time until the cellular connection was established.
The transition from WiFi to cellular now appears to be instant. Tesla may be activating the cellular connection as you enter the car, instead of waiting until the vehicle is put into drive.
Improved Reverse Functions
These has made two improvements to the vehicle while in reverse
Not a Tesla App / KeaganGigatexas
There are two improvements to reverse in this update when the vehicle is in reverse.
The vehicle's visualization will now display reverse lane markers when the vehicle is in reverse, indicating the vehicle's path.
For vehicles equipped with ultrasonic sensors, the update brings an innovative feature - the distance to objects behind the vehicle will now dynamically change based on the steering wheel's position (video). For example, if the steering wheel is centered and will go straight backward, then the distance to an object will be for the object behind the vehicle. However, if the steering wheel is turned, then the distance will be for the object that is in the vehicle's direction.
View Supercharger Amenities on Map
When viewing details about a Supercharger in the vehicle, the amenity icons are now buttons that can be tapped to view the locations on the map. Before, Tesla would show you what type of amenities were nearby, but you can now view the exact shops or stores.
Autopilot / FSD Beta Strike Reset
FSD Beta strikes have been reset in the holiday update
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With the holiday update, FSD Beta strikes have been reset for everyone. This gives everyone a clean slate when using the updated system that now applies to FSD Beta and Autopilot use.
If your vehicle has a cabin camera, you’ll lose access to Autopilot and FSD Beta after accumulating five strikes. If your vehicle doesn’t have a cabin camera, then you’re limited to three strikes.
Cabin Camera Privacy
You can now view the features the cabin camera is used for
Not a Tesla App
You can now view which Tesla features have access to the cabin camera. Simply navigate to Controls > Software > Cabin Camera.
The vehicle will display all features that are enabled and have access to the vehicle's interior camera.
Dashcam Icons
Tesla has made various improvements to the vehicle's Dashcam feature
Not a Tesla App
The dashcam now features an icon that is more informative. The dashcam icon will now display these states:
Saving / Loading: This icon features a gray badge with arrows letting you know the dashcam is saving or retrieving footage to the USB drive.
Saved Footage: After successfully saving footage to the USB drive, a green checkmark badge will now briefly appear on the dashcam icon.
Error / Not Recording: If there is an error with your dashcam, USB drive or recording is turned off, there will be a gray badge with an 'X' that signifies that the dashcam is not actively recording.
Paused: A red pause badge shows up on the dashcam's icon if the dashcam is temporarily not recording, like if the Dashcam Viewer is actively being used.
Automatic Wipers
Windshield wipers no longer need to be set to Auto while in Autopilot
Not a Tesla App
Automatic windshield wipers can now be turned off, even while Autopilot or FSD Beta is enabled.
Previously, you could change the time interval between wipes, but you could not turn off the wipers completely.
Dashcam Viewer Improvements
Tesla's Dashcam viewer is now much faster
Not a Tesla App
Thanks to hardware video decoding, the Dashcam Viewer is now faster and more responsive. When scrubbing the progress bar, video is now smoother and jumps around less.
Tesla Theater Improvements
Thanks to hardware decoding, Tesla's video services are also seeing improved performance
Not a Tesla App
Similar to the Dashcam Viewer improvements, Tesla Theater is now much faster and smoother as well. Improvements are noticed while browsing content, playing content and minimizing Tesla Theater.
Automatic Emergency Braking, Now Required
If you have Autopilot or FSD enabled in settings, then AEB is now required
Not a Tesla App
Automatic Emergency Braking, which can help stop your vehicle for perpendicular dangers, or in reverse, must now remain enabled if your vehicle is set up to use Autopilot or FSD Beta, even if they are not active.
Ability to Turn Off Automatic 911 Calling
Automatic 911 calling is an optional feature
Not a Tesla App
With this update, your vehicle will automatically call 911 if airbags are deployed and your phone is actively connected to the vehicle via Bluetooth.
The vehicle shows a countdown in such as situation, which allows you to cancel the call, however, the feature is optional and can be turned off by navigating to Controls > Safety > Automatic 911 Call.
The holiday update appears to have been a massive clean up by Tesla, where they not only improved performance but included many quality-of-life features. This is resulting in a smoother experience for owners and hopefully leaves some additional bandwidth for additional features in the future.
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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.
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