Tesla's Integration of WeChat Applets Might Hint at a Larger App Store Development [Video]

Tesla introduced 'apps' with their WeChat integration in China

Not a Tesla App

Earlier this year Tesla integrated WeChat applets, or mini-programs, as part of their holiday update in China. This move has sparked curiosity and speculation about whether these applets are a sneak peek into Tesla's long-rumored app store. To understand the significance of this development, let's first explore what WeChat and its applets are and how they function.

What is WeChat and Applets?

WeChat is a popular messaging, social media, and mobile payment app developed by Tencent, a Chinese technology company. It offers various features, such as messaging, voice and video calls, social media sharing, mobile payments, official accounts for brands and public figures, and location-based services. Since its launch in 2011, WeChat has become an essential app for millions of users, particularly in China, where it has integrated into various aspects of daily life.

WeChat applets, also known as WeChat mini-programs, are lightweight applications that run within the WeChat platform. These applets offer various functionalities and services, similar to standalone apps, but without users needing to download or install them separately. They are designed to load quickly and integrate seamlessly with the platform, providing a smooth user experience.

Tesla's WeChat Applets in Action

Below you can view Tesla's extensive applets available through WeChat that offer video streaming, audio books, flight tracking and more. Huge thanks to one of our readers who recorded this video for us.

Tesla New Year Update

In the context of Tesla's New Year update for the Chinese market, these WeChat applets have been integrated into the Tesla OS, offering extensive features that behave like apps. The applets function like websites, but their app-like behavior comes from their seamless integration with the vehicle. For example, when users tap an audiobook within an applet, it will play the audio through the car's music player, showcasing the applets' app-like functionality.

Tesla's move towards applets is likely inspired by Progressive Web Apps (PWAs), a standard for developing websites that can be installed, made available offline, and have app icons and assets saved instead of being loaded each time. This approach could be a strategic move for Tesla as they plan to develop their app store.

Easier Developer Access

By leveraging existing PWAs like Twitter, Tesla could quickly offer a range of popular apps upon launch, making it easy for developers to add their apps to Tesla's platform. As PWAs gain popularity, the Tesla app store will continue to grow, offering more variety to Tesla users.

As we reported more than a year ago, Tesla is actively developing an app store for its vehicles, rumored to be released this year. Concept designer DeleetDesigns even offered a vision of what a Tesla app store could look like.

A Tesla app store is an exciting prospect, but it may differ from traditional app stores like Apple's or Google's. Tesla is likely to focus on apps well-suited for use in a car rather than replicating the smartphone experience.

Do Tesla Have the Computing Power?

For the Tesla app store to succeed, it must leverage the benefits of the car's larger screen and integration with the vehicle. Tesla will likely build developer tools to enable the creation of apps that integrate into their OS, such as SiriusXM, YouTube Music, and video streaming apps like YouTube TV and Amazon Prime Video.

Moreover, the Tesla app store could enable developers to port additional games to Tesla vehicles, offering owners a wider range of gaming options.

An app store would be a significant win for Tesla, allowing them to offload the development of entertainment apps to other companies while freeing up engineers' time and providing owners with the desired apps.

However, running apps like those on smartphones and tablets would require a more capable processor than most Teslas. Only MCU 3-equipped vehicles would likely support such an app store, which only became available in late 2021. Tesla's WeChat applets require the Ryzen processor in MCU 3, and if Tesla does offer more web-based apps, the requirement may remain.

Tesla's integration of WeChat Applets in China may indicate the company's progress towards an app store. Although we should adjust our expectations for what a Tesla app store will entail, it's an exciting development that could greatly enhance the Tesla experience.

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Tesla LFP Batteries Can Now Be Warmed up While Supercharging Using Innovative Feature

Not a Tesla App

Tesla’s been on a roll with Supercharger improvements lately, from the 325kW charging update for the Cybertruck, to 500kW with V4 Superchargers coming next year. While those improvements have been limited to the Cybertruck, Tesla didn’t put all their focus on their new flagship vehicle, but looked at their more affordable vehicles as well.

LFP Battery Heating

Tesla’s Superchargers can now heat LFP Batteries - those that are in the Model 3 and Model Y Rear Wheel Drive variants. This applies to Long Range and Standard Range models, which saw a limited run. This is another update included as part of the 2024 Tesla Holiday Update - which really arrived with a lot of unannounced new features and capabilities.

The change is pretty interesting - Superchargers of the V3 and V4 variety can now pre-heat batteries for Model 3 and Model Y vehicles equipped with LFP battery packs. That means those vehicles are able to get back on the road faster when it's extremely cold. Of course, Tesla still advises you to precondition before you arrive, saving drivers time and money.

Max de Zegher, Tesla’s Director of Charging, also commented on the new feature. Essentially, Tesla is inducing an AC (alternating) ripple current through the battery to warm it up. Keep in mind that Superchargers are DC charging. That means it is possible to get a cold-soaked LFP vehicle on the road 4x faster than before, assuming that it didn’t precondition at all and that it is in the worst-case scenario (below 0ºF).

In essence, Tesla is using some engineering magic to turn the circuits inside the LFP battery into an electric heater - and powering that heater through the Supercharger. An AC ripple current is a small oscillation in the DC charging current that generates heat through electrical resistance, warming up the battery. Those ripples are a byproduct of converting AC to DC and back - so Tesla is using the onboard charger to induce those ripples to warm up the battery. Definitely an innovative technique that’s really only possible with the versatility of the NACS connector.

We’re hoping Tesla can implement this across their full lineup of vehicles, but we’ll have to wait and see how it is trialed across LFP vehicles first and if it is even possible on vehicles with 2170 or 4680 battery packs.

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Tesla Included FSD V12.6.1 and V13.2.4 in the Same Update: What Caused This and What It Means

Not a Tesla App

Tesla launched two FSD updates simultaneously on Saturday night, and what’s most interesting is that they arrived on the same software version. We’ll dig into that a little later, but for now, there’s good news for everyone. For Hardware 3 owners, FSD V12.6.1 is launching to all vehicles, including the Model 3 and Model Y. For AI4 owners, FSD V13.2.4 is launching, starting with the Cybertruck.

FSD V13.2.4

A new V13 build is now rolling out to the Cybertruck and is expected to arrive for the rest of the AI4 fleet soon. However, this build seems to be focused on bug fixes. There are no changes to the release notes for the Cybertruck with this release, and it’s unlikely to feature any changes when it arrives on other vehicles.

While this update focuses on bug fixes, Tesla’s already working on bigger features for FSD V13.3, which we have already confirmed to include improvements to highway following and speed control.

FSD V12.6.1

FSD V12.6.1 builds upon V12.6, which is the latest FSD version for HW3 vehicles. While FSD V12.6 was only released for the redesigned Model S and Model X with HW3, FSD V12.6.1 is adding support for the Model 3 and Model Y.

While this is only a bug-fix release for users coming from FSD V12.6, it includes massive improvements for anyone coming from an older FSD version. Two of the biggest changes are the new end-to-end highway stack that now utilizes FSD V12 for highway driving and a redesigned controller that allows FSD to drive “V13” smooth.

It also adds speed profiles, earlier lane changes, and more. You can read our in-depth look at all the changes in FSD V12.6.

Same Update, Multiple FSD Builds

What’s interesting about this software version is that it “includes" two FSD updates, V12.6.1 for HW3 and V13.2.4 for HW4 vehicles. While this is interesting, it’s less special when you understand what’s happening under the hood.

The vehicle’s firmware and Autopilot firmware are actually completely separate. While a vehicle downloading a firmware update may look like a singular process, it’s actually performing several functions during this period. First, it downloads the vehicle’s firmware. Upon unpacking the update, it’s instructed which Autopilot/FSD firmware should be downloaded.

While the FSD firmware is separate, the vehicle can’t download any FSD update. The FSD version is hard-coded in the vehicle’s firmware that was just downloaded. This helps Tesla keep the infotainment and Autopilot firmware tightly coupled, leading to fewer issues.

What we’re seeing here is that HW3 vehicles are being told to download one FSD version, while HW4 vehicles are being told to download a different version.

While this is the first time Tesla has had two FSD versions tied to the same vehicle software version, the process hasn’t actually changed, and what we’re seeing won’t lead to faster FSD updates or the ability to download FSD separately. What we’re seeing is the direct result of the divergence of HW3 and HW4.

While HW3/4 remained basically on the same FSD version until recently, it is now necessary to deploy different versions for the two platforms. We expect this to be the norm going forward, where HW3 will be on a much different version of FSD than HW4. While each update may not include two different FSD versions going forward, we may see it occasionally, depending on which features Autopilot is dependent on.

Thanks to Greentheonly for helping us understand what happened with this release and for the insight into Tesla’s processes.

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