Tesla will display which Superchargers include trailer-friendly stalls
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Tesla’s latest update includes a special feature for Cybertruck that may eventually be rolled out to the rest of the lineup. It appears Tesla is getting ready for the summer road trip season early by focusing on enhanced security for drivers who tow trailers and improving accessibility to its Supercharger network for such vehicles.
Cybertruck's New Trailer Alarm Feature
With update 2024.8.4 Tesla is introducing a trailer alarm system for the Cybertruck. This innovative feature extends the vehicle's alarm system to monitor the connection status of a trailer hitched to the vehicle. In practical terms, this means the vehicle's alarm will now also protect the trailer, ensuring an added layer of security for owners' valuable cargo.
With update 2024.8 the alarm in the Cybertruck will sound if the trailer is unhitched
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Activating or deactivating alongside the vehicle's alarm system, this feature can be conveniently managed through the vehicle's settings under the "Towing and Hauling" section, where the "Trailer Alarm" option is located. Owners who prefer not to use this feature can disable it, tailoring the vehicle's security settings to their preferences. At this point, we only have confirmation of the feature in Cybertruck, but it would make sense to add it to the other models that haul trailers as well.
The release notes state:
“Your vehicle alarm now also monitors whether your trailer is plugged in to the hitch.
The trailer alarm sets and turns off along with your vehicle alarm. You can disable this security feature in your vehicle settings at Towing and Hauling > Trailer Alarm.”
Tesla Will Show Which Superchargers Include Trailer-Friendly Stalls
Tesla is also improving the Supercharging experience for drivers with trailers. Recognizing owners' difficulties when charging vehicles while towing, Tesla has been progressively introducing pull-through stalls at Supercharger stations. These stalls are designed to accommodate vehicles with trailers, eliminating the need to detach trailers before charging – a significant improvement over the traditional back-in stalls that dominate the network.
Wes Morrill, a Cybertruck engineer who has become more vocal on X, posted that the “Supercharger team is always looking for opportunities to install these at new locations. Will show trailer friendly stalls on the in-vehicle UI to make it easier when road tripping with a trailer.”
Once this feature is implemented, we expect Tesla to list the number of pull-through stalls next to the number of available stalls at each Supercharger location. Tesla already displays how many stalls are in use, how many cars are en route to the Supercharger, and if any stalls are out of order, as determined by their monitoring service.
Tesla already shows how many cars are en route to a Supercharger
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Amid rising gas prices, Tesla's updates offer a cost-effective solution for summer road trips. The new trailer alarm and UI improvements for finding Supercharger stations address towing challenges, enhancing the Tesla experience. This initiative showcases Tesla's commitment to innovation and sustainable travel, enabling owners to bypass the impact of fuel costs and enjoy their adventures.
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.
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.
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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