Tesla has doubled-down on vision as they realize they can’t rely on a matrix of sensors in order to produce an accurate representation of the real world, which is required to achieve full self-driving.
With this information in hand, Tesla released their first vehicles without radar earlier this year. If you have a Model 3 or Model Y produced in May or later of 2021 in the US, then you have a vision only car that does not rely on radar.
Unfortunately, the down side to these vehicles right now is that the software hasn’t caught up with the functionality radar was providing yet.
There are many nuances between cars with radar and those without, but there are some major features that are missing from radar-less cars. Some of the missing features were Smart Summon and Emergency Lane Departure Avoidance. The cars were also limited to a maximum speed of 75 MPH (120 KPH) while on Autopilot, compared to a limit of 90 MPH for cars with radar.
That is until now. Tesla has apparently been working on adding these features back as quickly as possible for these newest vehicles. With software updates 2021.4.18.10 and 2021.4.18.11 Tesla has now added Smart Summon and Emergency Lane Departure Avoidance back to vision only vehicles. The maximum speed while on Autopilot has also been increased to 80 MPH in this release, up from 75 MPH.
These features appear to work very similarly to vehicles equipped with radar and Tesla is essentially recreating what radar provided (distance from objects) with image processing. Andrej Karpathy spoke at a conference two weeks ago where he described how Tesla is using vision to determine the distance of objects. It’s an interesting talk if you’re interested in some of the latest information on how Tesla is trying to achieve FSD.
With these major features added back to vision-only cars, Tesla has just about reached feature parity with cars that contain a radar sensor in just a short few months. The speed maximum limit while on Autopilot is still slightly below cars with radar, but 80 MPH seems to be very reasonable.
It’s clear that Tesla believes the future is vision and they will not be relying on other sensors such as radar. As software continues to improve and Tesla is able to more accurately represent distance with vision only, we expect all cars to move to a vision-only system and for radars to be disabled on older vehicles.
Tesla recently started rolling out an update that enabled the cabin radar in recent Model Ys and added support for first-row cabin sensing. This functionality not only lets Tesla replace the seat occupancy sensors in the front seats but also gives them a better idea of the size of the passengers — critical information when an accident occurs.
However, Tesla has now revealed that it won’t just be recent versions of Model Y that will receive these updates. Other recent vehicles also have a dormant in-cabin radar that will be activated in a future update.
Child Presence Detection
This front-row occupant sensing is only half of the update. Tesla also plans to add support to the rear seats that will let it detect occupants left in the vehicle. In a post on X, Tesla stated that at least 37 children die per year from heatstroke, just in the United States, according to the NHTSA. Tesla’s cabin radar will help reduce the number of deaths by detecting children left in the vehicle and alerting the owner or turning on the HVAC system.
The new radar has several safety-focused features, and they’re all designed to help protect someone left behind in a vehicle. First up - the radar will detect and classify passenger sizes to determine which airbags to deploy dynamically, helping to reduce injuries from shorter individuals sitting up front.
Additionally, the radar can differentiate an adult from a child or baby - and automatically and dynamically make the necessary safety adjustments on the fly. Tesla will also be able to detect heart rate and breathing through the radar - and has a series of safety steps it can take from here.
If a child or baby is detected being left behind in the vehicle, the Tesla app will immediately notify you and turn on the HVAC system to ensure their safety. In the case of an emergency, the vehicle will automatically call emergency services and report its location.
As a reminder, while Tesla vehicles outside of the United States support eCall, vehicles within the US cannot call 911 unless a phone is connected to the vehicle via Bluetooth. We hope that Tesla looks to add similar capabilities in North America to improve safety capabilities.
Supported Models
Although the cabin radar has only been activated in Model Ys produced in the last couple of years, Tesla said in their post on X that the radar is also available in recent Model 3s and the Cybertruck.
We did a little digging and confirmed that the part numbers for the cabin radar are the same for the 2024+ Model Y, 2024+ (new) Model 3, and the Cybertruck. So, these vehicles should also receive the latest cabin radar features.
Although the 2023 Model Y features a different part number, 2022 and 2023 Model Ys have also been receiving the front-row cabin sensing feature in Tesla’s 2025.2.6 update, but it is less clear whether they’ll receive the rear seats update later this year. The Model S and Model X also include a cabin radar, but the part number also differs from the cabin radar for the 2024 Model 3 and Model Y.
While the new Model Y isn’t available to check against on Tesla’s Electronic Parts Catalog, it looks like Tesla has been shipping the new 4D cabin radar in at least the 2024+ versions of their Model 3, Model Y and Cybertruck.
We expect rear-seat sensing to arrive on vehicles with the latest cabin radar later this year, while it’s unclear whether the other vehicles with the older cabin radar will receive it.
Tesla mentioned that rear-seat support will arrive in Q3 2025 for the refreshed Model Y. Based on the different interior sizes and spaces, sensor calibration and testing for other models may come slightly later.
After vandals set fire to a Tesla Supercharger site in Massachusetts, Tesla quickly repaired the damage and had the station up and running again in less than 48 hours.
The incident occurred overnight on March 2, 2025, and Tesla was made aware of the situation early the following morning. The company swiftly communicated with customers on X, assuring them that the site would be fully operational again within two days.
No customers were charging at time of the fire. Posts & wire will be replaced in <48hrs. Critical infrastructure for EV drivers. Arson investigation ongoing with @LittletonMAPD.
Tesla has also launched an arson investigation in collaboration with the local police department, though no specific suspects have been identified as of now. The company is offering a $5,000 reward for any information that leads to the successful arrest of the perpetrator.
48 Hours
Tesla quickly assessed the damage to the Supercharger site, finding that it was relatively limited. The incident caused some wiring damage and damage to the Supercharger posts, but fortunately, the Supercharger cabinet remained unaffected.
By March 5, 2025, Tesla updated customers on X, stating that the transformers and cabinets had been thoroughly inspected, and the site was re-energized and fully operational. Since this Supercharger site is open to other manufacturers, it affected more than just Tesla customers.
Tesla charging’s teams have been quick to respond to misguided vandalism lately and have also been implementing some anti-theft measures to help ensure Superchargers stay active. Tesla may also soon improve its Sentry Mode, by having it honk when it senses possible vandalism.
It’s important to remember that Tesla Supercharger stations are a public resource. Damaging them doesn’t just affect Tesla owners—it impacts all EV drivers. Many Supercharger sites are open to other electric vehicles and serve as a vital charging option, especially in remote areas where charging options may be limited.
Additionally, some Supercharger stations are partially or fully funded by government grants aimed at expanding EV infrastructure. Acts of vandalism only harm local communities by undermining efforts to build essential public resources.
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