While drivers of older Tesla vehicles equipped with HW3 computers are eagerly anticipating the much-anticipated FSD 12.6 update, those fortunate enough to own newer HW4 models are already enjoying the latest FSD 13.2.1.
Issues with the New AI4.1 Upgrade
However, there’s a significant problem for buyers of the latest Tesla models, which come with an unannounced upgrade to the HW4 computer, referred to as AI4.1. These new units are reportedly experiencing failures shortly after purchase, causing them to shut down unexpectedly.
In some instances, the AI4 computer breaks down after just a few hundred miles, leading to the loss of not only the FSD feature but also the functionality of cameras and GPS navigation, making range estimates impossible to determine. Reports suggest that this issue is quite common, with Tesla’s service team receiving numerous alerts regarding it. The potential cause seems to be a low-voltage system that could be damaging the HW4 system boards during the calibration of the cameras.
Uncertain Causes and Possible Recalls
It remains unclear what exactly is causing the short-circuiting that leads to the failure of AI4.1 computers in Tesla vehicles manufactured in recent months; this could potentially be a production flaw. If that’s the case, it may lead to a recall for full unit replacement, even though Tesla is reportedly trying to postpone this outcome with a software solution.
Despite providing quicker AI processing capabilities, Tesla’s HW4 computer doesn’t offer many other benefits compared to the HW3 unit. The primary aim appears to be reducing production costs, as HW4 has less RAM and storage in models like the Model Y and Model 3, along with increased power consumption when not in use.
Cost-Cutting Consequences
Tesla might have pushed the boundaries of cost-saving measures too far with the AI4.1 version of their computer, leading to potential weaknesses. Elon Musk had promised that all HW3 computers would be upgraded to AI4 units for free if FSD 13 couldn’t be made functional on them. Given the issues with the AI4 computer, this assurance doesn't seem as promising now as it did at the time of the retrofit announcement.
— Ashok Elluswamy (X), Electrek
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