Tesla's HW3 May Not Support Full Self-Driving, Musk Admits

Tesla CEO Elon Musk has finally acknowledged that the company’s Hardware 3 (HW3) computer might not be capable of supporting full self-driving (FSD). This admission comes after months of speculation and criticism over Tesla’s inability to deliver on its promise of unsupervised FSD with HW3. The revelation was made during a conference call following the release of Tesla’s Q3 2024 financial results.

Why it Matters

The implications of this admission are significant for both Tesla and its customers. Millions of Tesla vehicles currently on the road are equipped with HW3, and many owners have paid for the FSD feature, expecting it to deliver on the company's promises. If HW3 is indeed incapable of achieving unsupervised self-driving, it could lead to a loss of trust among consumers and potential regulatory scrutiny.

Key Risks

1. Customer Dissatisfaction: Tesla has already faced criticism over delays in delivering FSD. This admission could further erode customer confidence, especially among those who have paid for the feature.
2. Regulatory Concerns: The inability to deliver on promised capabilities could attract attention from regulatory bodies, potentially leading to investigations or fines.
3. Financial Impact: The need to offer free upgrades to HW4 for customers who purchased FSD with HW3 could be costly, impacting Tesla’s financial performance.

The Opportunity

Despite the challenges, Musk's admission provides an opportunity for transparency and trust-building. By acknowledging the limitations of HW3, Tesla can set more realistic expectations for its customers and focus on developing solutions that meet their needs. Additionally, the company has already designed the system to be upgradable, which could mitigate some of the financial impact.

Technical Details

Musk explained during the conference call:

"We are not 100% sure. HW4 has several times the capability of HW3. It’s easier to get things to work on HW4 and it takes a lot of efforts to squeeze that into HW3. There is some chance that HW3 does not achieve the safety level that allows for unsupervised FSD."

Tesla is currently using both neural network (NN) nodes on HW3, even though one was originally intended as redundancy. This makes it challenging to deliver the promised level 4-5 autonomy, which requires significant computational power.

Upgrade Path

Musk assured customers that if Tesla determines HW3 cannot support unsupervised FSD, they will offer a free upgrade to those who purchased FSD with HW3:

"If that turns out to be the case, we will upgrade those who bought HW3 FSD for free. And we have designed the system to be upgradable."

However, it's important to note that the current version of HW4 is not directly compatible with HW3-equipped vehicles due to differences in power and camera harnesses, as well as a different form factor. Tesla would need to develop a new version of HW4 specifically for retrofits.

Musk’s Perspective

Musk emphasized that while the cameras on HW3 are "capable," the compute power is the primary limitation. This highlights the company's focus on improving computational capabilities to achieve its self-driving goals.

Conclusion

Elon Musk's admission regarding the limitations of Tesla’s HW3 marks a significant shift in the company's narrative around full self-driving technology. While it presents risks, it also offers an opportunity for transparency and trust-building with customers. The next steps will be crucial as Tesla navigates the challenges of delivering on its promises while maintaining financial stability.