As the Senior Director of Charging Infrastructure at Tesla, Rebecca Tinucci is not just a key executive in the company but also a pivotal figure in the electric vehicle industry. She has been recognized as one of the "100 Most Influential Climate Leaders in Business for 2023" by Time Magazine.
Well Deserved Recognition
Tinucci's notable achievement in 2023 was her successful negotiation with other leading EV manufacturers to expand access to Tesla's charging network across the United States. This strategic move involved integrating major automotive brands such as BMW, Ford, GM, Honda, Hyundai, Mercedes-Benz, Nissan, and Toyota into Tesla's charging ecosystem.
This expansion has made Tesla's charging standard the de facto choice in North America and opened new revenue streams for the company by welcoming non-Tesla EV owners to use its network. Additionally, it has positioned Tesla to benefit from federal charging infrastructure funding, from which it was previously excluded.
This strategic expansion under Tinucci's leadership signifies a monumental shift in the EV charging landscape. By creating a more inclusive charging network, Tesla has not only bolstered its position in the market but also contributed significantly to the broader adoption of EVs, reinforcing the company's commitment to sustainability and innovation.
Tinucci was a shining star among Tesla's leadership during the Investor Day 2023 event in March. She enthusiastically led the audience through Tesla's charging advancements and teased the future. Tinucci was the one to first hint at the Tesla retro diner that is now under construction in Los Angeles. She also gave a lot of ammunition to speculate about a possible charging pad.
Educational and Early Professional Foundations
After completing her Commerce, Finance, and Management studies at the University of Virginia, Tinucci embarked on her professional journey in 2008 as a Management Consultant at Kurt Salmon Associates in New York. In 2009, she ventured into entrepreneurship by establishing Evatran. This enterprise, known as Plugless Power in the market, specializes in the pioneering field of wireless EV charging.
Tinucci's career took a significant turn when she relocated to the West Coast in 2018 and joined Tesla in a pivotal role as a Senior Product Manager. She distinguished herself by forming and leading a team focused on developing Machine Vision technologies for advanced manufacturing processes there. Her ability to drive progress was quickly recognized, leading to her promotion to Senior Program Manager of the Energy Group within just four months, where she focused on software development and pivotal strategic projects.
Ascending the Ranks at Tesla
Tinucci's climb through Tesla's ranks was rapid and impactful. She soon took on the role of Staff Technical Program Manager, where she was responsible for overseeing critical initiatives throughout the engineering division. As the Senior Manager for Super Charging, she played a crucial role in Tesla's expansion, implementing innovative features such as integrating wait times into Tesla's navigation system for busy Supercharger stations and introducing variable charging rates based on the time of day at selected locations.
Her promotion to Senior Director of Charging Infrastructure marked a significant milestone in her career. Tinucci oversees Tesla's worldwide charging business units in this role, directing a team of more than 450 professionals. Her recognition by Time Magazine underscores her influence and the critical role she plays in advancing sustainable transportation solutions. As she continues to lead Tesla's charging infrastructure to new heights, her contributions are setting new benchmarks in the EV assigning domain.
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.
