Tesla introduced Auto Cancel turn signals with update 2021.36 on their refreshed Model S and Model X vehicles. This feature makes using the new yoke steering wheel easier since the yoke uses touch-sensitive buttons for turn signals instead of a stalk.
Supported Models
In Tesla’s holiday update, version 2022.44.25, Tesla added the Auto Cancel turn signals feature to all Model 3 and Model Ys that have FSD hardware 3.0. It’s currently not available for legacy Model S and X vehicles and cars that have FSD hardware 2.5 or lower.
How to Enable Auto Cancel Turn Signals
Tesla’s Auto Cancel feature is turned off by default. To enable it, go to Controls > Lights > and toggle Turn Signals to "Auto Cancel." This setting is saved per profile, letting each driver choose their preference. It is also synced to your Tesla profile so that it's available across all vehicles you rent or own.
Behavior Without Auto Cancel
The Model 3 and Model Y currently have two ways to use the blinkers. The first is a soft press, which causes the blinker to flash three times before turning itself off. This is great for when you’re quickly switching lanes on the highway. The firm press, or click, activates the blinker until the wheel is returned back to center. This is ideal for stop signs and other longer events where you may need your turn signal on for longer than three flashes.
Behavior with Auto Cancel
When Tesla's Auto Cancel feature is enabled, the distinction between the soft press and click practically disappears. Tesla will now manage when to turn off your turn signals based on Tesla Vision. The turn signals will turn off only after a turn is completed, regardless of how many times the signal blinks. This is a much more functional (and safer) way to drive since the blinker will only turn off once the turn is completed. This could be as simple as changing lanes on the highway or making a complete left turn at an intersection.
It’s worth noting, though, that the signals will also turn off if the steering wheel is returned to the center, regardless of your setting. The vehicle is also intelligent enough to not turn the turn signal off after a lane change if there is an upcoming turn.
As previously mentioned, the Auto Cancel feature is not yet available to legacy Model S and Model X vehicles. But we’re anticipating Tesla will enable it in a future update.
Auto Shift in Model S and Model X
Tesla’s refreshed Model S and Model X vehicles have garnered a lot of adoration for their design, technology, and safety. To add to the “cool factor” of the vehicles, they come with the ability to automatically shift into park, reverse, and drive.
For example, if you are grocery shopping and your vehicle is pulled up to a wall, the vehicle will know that it can’t go forward; therefore, it needs to reverse and automatically shift into reverse.
Tesla can accomplish this by using its proprietary Tesla Vision, an advanced hardware and software functionality that only uses cameras to make decisions. The goal of Tesla Vision is to resemble human driving and make it safer.
Last year, Elon said the Auto Shift feature will come to all Teslas. With Auto Cancel functionality now being brought to the Model 3 and Model Y, Tesla may be looking to add Auto Shift next.
Tesla’s Cybertruck has officially earned a 5-Star Safety Rating from the NHTSA—an impressive achievement given the vehicle’s design. The achievement demonstrates Tesla’s engineering prowess. As one engineer points out, it wasn’t an easy feat.
Interestingly, the NHTSA only recently disclosed the results, despite the crash tests being completed a while ago. According to Lars Moravy, Tesla’s VP of Vehicle Engineering, the team had been aware of the 5-star rating for quite some time. While the reason for the delay remains unclear, now that the results are public, Tesla’s engineers can finally share how they achieved the rating.
Crumple Zones
Wes Morril, the Cybertruck’s Lead Engineer, wrote about the crash test video on X recently, addressing the claims that the Cybertruck doesn’t have a crumple zone. He also posted a side-by-side video (below) of the engineering analysis and the crash test itself.
Engineered Crash Safety
There’s a lot of engineering precision at play when a Cybertruck is involved in a crash. Unlike traditional crash structures that rely on crash cans and collapse points, the Cybertruck’s front gigacasting is designed to absorb and redirect impact forces in a highly controlled manner.
It all starts with the bumper beam, which crushes within the first few milliseconds of a high-speed impact. At the same time, the vehicle’s sensors rapidly analyze the crash dynamics and determine the optimal deployment of safety restraints, including airbags and seat belt pre-tensioners. These split-second actions are crucial in keeping occupants safe.
As the crash progresses, the vehicle’s structure deforms in a carefully engineered sequence. The drive unit cradle bends, directing the solid drive unit downward and out of the way, allowing the gigacasting to begin absorbing impact forces.
The casting crushes cell by cell, methodically dissipating energy in a controlled manner. This gradual deceleration reduces the g-forces transferred to occupants, making the crash much less severe. As the gigacast begins crushing, the safety restraints are deployed.
As Wes points out in his post - you can see how accurate the virtual analysis and modeling were. The video shows the simulated crash side by side with the real-life crash test and they’re almost identical. All that virtual testing helps provide feedback into the loop to design a better and safer system - one that is uniquely different than any other vehicle on the road.
All the armchair experts claimed the Cybertruck has no crumple zone and I get it, the proportions seem impossible. It was a tough one and there is a lot of engineering that went into it. Let me break it down for you:
Tesla has pioneered the use of single-piece castings for the front and rear sections of their vehicles, thanks to its innovative Gigapress process. Many automakers are now following suit, as this approach allows the crash structure to be integrated directly into the casting.
This makes the castings not only safer but also easier to manufacture in a single step, reducing costs and improving repairability. For example, replacing the entire rear frame of a Cybertruck is estimated to cost under $10,000 USD, with most of the expense coming from labor, according to estimates shared on X after high-speed rear collisions.
These insights come from Sandy Munro’s interview (posted below) with Lars Moravy, Tesla’s VP of Vehicle Engineering, highlighting how these advancements contribute to the improvements in Tesla’s latest vehicles, including the New Model Y.
However, with the new Model Y, Tesla has decided to go a different route and eliminated the front gigacast.
No Front Casting
Tesla’s factories aren’t equipped to produce both front and rear castings for the Model Y. Only Giga Texas and Giga Berlin used structural battery packs, but these were quickly phased out due to the underwhelming performance of the first-generation 4680 battery.
Tesla has gone back to building a common body across the globe, increasing part interchangeability and reducing supply chain complexity across the four factories that produce the Model Y. They’ve instead improved and reduced the number of unique parts up front to help simplify assembly and repair.
There is still potential for Tesla to switch back to using a front and rear casting - especially with their innovative unboxed assembly method. However, that will also require Tesla to begin using a structural battery pack again, which could potentially happen in the future with new battery technology.
Rear Casting Improvements
The rear casting has been completely redesigned, shedding 7 kg (15.4 lbs) and cutting machining time in half. Originally weighing around 67 kg (147 lbs), the new casting is now approximately 60 kg (132 lbs).
This 15% weight reduction improves both vehicle dynamics and range while also increasing the rear structure’s stiffness, reducing body flex during maneuvers.
Tesla leveraged its in-house fluid dynamics software to optimize the design, resulting in castings that resemble organic structures in some areas and flowing river patterns in others. Additionally, manufacturing efficiency has dramatically improved—the casting process, which originally took 180 seconds per part, has been reduced to just 75 seconds, a nearly 60% time reduction per unit.
Advancements in die-casting machines and cooling systems have allowed @Tesla to dramatically reduce cycle times and improve dimensional stability. pic.twitter.com/WB5ji67rvV
Tesla’s new casting method incorporates conformal cooling, which cools the die directly within the gigapress. Tesla has been refining the die-casting machines and collaborating with manufacturers to improve the gigapress process.
In 2023, Tesla patented a thermal control unit for the casting process. This system uses real-time temperature analysis and precise mixing of metal streams to optimize casting quality. SETI Park, which covers Tesla’s manufacturing patents on X, offers a great series for those interested in learning more.
The new system allows Tesla to control the flow of cooling liquid, precisely directing water to different parts of the die, cooling them at varying rates. This enables faster material flow and quicker cooling, improving both dimensional stability and the speed of removing the part from the press for the next stage.
With these new process improvements, Tesla now rolls out a new Model Y at Giga Berlin, Giga Texas, and Fremont every 43 seconds—an astounding achievement in auto manufacturing. Meanwhile, Giga Shanghai operates two Model Y lines, delivering a completed vehicle every 35 seconds.
![A Look at the Tesla Cybertruck’s Crumple Zones [VIDEO]](https://www.notateslaapp.com/img/containers/article_images/cybertruck/cybertruck-crash-test.webp/e43ef2433bd6e44ae8db63421604a4fb/cybertruck-crash-test.jpg)
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