Tesla's Model Y With Hardware 4.0 Doesn't Include Radar: We Take a Look at Why

June 1, 2023

By Kevin Armstrong

Tesla's Model Y with HW4 is coming without radar

Tesla

As Tesla continues to redefine the automotive industry, insiders have revealed that the company's upcoming Hardware 4.0 (HW4) will not include the radar module in its Model Y vehicles, at least not initially. This marks a shift in the company's approach towards autonomous driving, relying more heavily on vision-based systems. This strategic decision builds on the recent introduction of HW4 in the luxury Model S and Model X models.

HW4 Evolution and Vision Focus:

Previously, the integration of HD radar in the Model S and Model X indicated an evolution in the company's Full Self-Driving (FSD) hardware. However, according to a trusted source, Tesla is not including HD radar in its new Model Ys with HW4. This surprising decision could mean several things, possibly indicating that Tesla views HD radar as a "ground truth" to help improve their vision systems rather than a vital component for FSD vehicles.

Ground-truth Radar: A Tool for Vision Improvement:

In this sense, ground truth refers to the objective reality or facts of a situation, typically used as a benchmark to measure the accuracy of an AI system's predictions or observations.

Last year, Tesla registered a new high-resolution radar unit with the U.S. Federal Communications Commission (FCC), a move that sparked speculation about the company's approach to FSD. The radar unit, intended for imaging similar to LiDAR, hinted at Tesla's continuing interest in using ground-truth systems to train their machine-learning algorithms for vision accuracy. Despite Elon Musk's well-documented skepticism towards LiDAR for autonomous driving, Tesla prototypes have been spotted with LiDAR sensors.

HD Radar to be Added Later?

Although Tesla may be using its radar in HW4 vehicles to improve their vision system, other possibilities could have led Tesla to this decision. New Model Ys with HW4 may only be without radar temporarily, possibly due to a supply chain issue. New owners would still better off receiving a vehicle with HW4 and without radar than a HW3-equipped vehicle due to the improved cameras and faster FSD computer that includes redundancy.

Cost Savings

Of course, HD radar inclusion could also come down to cost. With the Model Y costing almost half of Tesla's luxury models, this decision could come down to cost. If Tesla believes their FSD system could perform almost identically to vehicles with radar, they may simply decide to forego the radio technology in lower-cost vehicles.

Balancing Vision and Radar: The Trade-Off:

While HD radar and LiDAR can provide highly accurate 3D depth measurements, their high cost and potential to overwhelm the FSD system with conflicting data have led Tesla to prioritize camera-based vision systems. Musk has consistently argued that self-driving cars should navigate the world in the same manner as human drivers, using cameras and computational power to navigate three-dimensional space.

Model Y With HW4 But Without HD Radar:

While excluding HD radar from the HW4 in Model Y might seem like a setback, it could prove to be a game-changer. Tesla's strategy of using radar to enhance vision rather than as a core component of its FSD system means that these vehicles may not be as disadvantaged as initially thought.

This approach is consistent with Tesla's earlier decision to remove ultrasonic sensors from some vehicles, enabling them to run vision-based park assist code and compare vision readings to ultrasonic sensor readings. This resulted in significant improvements in vision detection, further solidifying Tesla's commitment to a vision-oriented future.

Introducing HW4 into the Model Y may suggest Tesla's potential future strategies. For instance, commercial Robotaxis may employ multi-sensor systems, including radar and possibly LiDAR, to achieve full automation. Conversely, consumer self-driving vehicles could maintain the vision-only approach to keep costs down.

Ultimately, the transition to HW4 indicates Tesla's unwavering pursuit of refining autonomous driving technology. As the landscape of self-driving vehicles continues to evolve, it will be interesting to see how Tesla's approach shapes the future of this sector.

Tesla Issues Physical Recall for Some Model 3 & Model Y Vehicles Over Seat Fasteners

June 27, 2025

By Karan Singh

Not a Tesla App

Tesla has issued a new, voluntary safety recall for a small batch of Model 3 and Model Y vehicles due to an issue with improperly tightened fasteners in the first-row seats.

The recall impacts only about 48 vehicles and will require a Tesla service visit to resolve.

Improperly Tightened Fasteners

According to the recall notice, the issue stems from the first-row seating that may have been manufactured with improperly torqued fasteners that attach the seat back to the seat bottom. In some cases, the fasteners may be loose or missing, which could cause a rattle or the seat to detach.

This is a critical safety issue, as a seat back that is not properly anchored could detach, leaving the driver or passenger unsupported and increasing the risk of an accident.

According to Tesla’s investigation, this issue originated from a production change made for vehicles manufactured between April 3rd and May 7th of 2025. However, not all vehicles built within that date are impacted by the recall. The issue impacts 30 2026 Model Ys and 18 2025 Model 3s, across all variants, including RWD, AWD, and Performance (for the Model 3).

Thankfully, there have been no incidents related to this issue to date.

The Fix

Since this is a physical recall, Tesla will have to inspect impacted vehicles and replace and properly retorque the seat fasteners as needed, free of charge.

Owners of vehicles who have been impacted have already been contacted under the voluntary recall, and most vehicles should have been repaired by the time this notice is formally issued.

You can also check if your VIN is impacted by a recall using Tesla’s Recall Tool.

Tesla has noted the repair should take approximately one hour of work at a Service Center, and up to two hours if a Mobile Ranger addresses the recall.

Tesla Robotaxi Sends Out More Invites: Next Phases of Robotaxi

June 27, 2025

By Karan Singh

@TerrapinTerpene

Following the successful launch of Robotaxi on Sunday, June 22nd, Tesla has begun moving to the next phase of its Robotaxi rollout. They have finally begun sending out a second, larger wave of invites, expanding the early access program to more members of the Tesla community across the United States.

This has moved them past the initial 20 or so users that were offered access on Sunday. That also means Tesla is on the hunt for something crucial: more real-world data.

More Riders ASAP

The initial launch was a tightly controlled event, with access granted to a small and curated group of influencers. While this approach was ideal for generating initial buzz for the launch and collecting feedback from high-quality testers, it also presented logistical challenges.

With only a handful of authorized riders and vehicles, the demand for rides would inevitably dry up as influencers begin their journeys back home. Without a public release, that would leave Tesla’s Robotaxi fleet idle, unable to gather additional data.

To rapidly improve on Robotaxi’s FSD, Tesla needs its vehicles to be constantly navigating real-world scenarios, encountering edge cases, and logging miles. The second round of invites is needed to keep Robotaxis learning and on the road.

Austin Users Next?

This new wave of invites isn’t an open door for members of the public quite yet. By continuing to send invites to trusted community members, Tesla is executing a slow and deliberate rollout by inviting members who know and love Tesla. This allows them to scale the program gradually, increasing the number of users and the diversity of ride requests without overwhelming the relatively small initial fleet of about 10 cars.

Future phases will likely involve opening access to Tesla owners within Austin, which would open up a regular flow of rides. Once that’s done, Robotaxi will likely open up to the public.

Sign of Confidence

The expansion of the early access program is a sign that Tesla is happy and confident with the rollout so far. While Tesla can gather plenty of data around Austin from Tesla owners using FSD, they also need to continue testing features that are exclusive to the Robotaxi, such as the Robotaxi app, support, and remotely control the vehicles when needed.

We expect a full launch to potentially still be months out, but this methodical expansion will likely see more users gradually gain access to the Robotaxi network in the coming weeks.