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FAQ: How to know if your Tesla has HW4Updated 6 days ago

What's Hardware 4, or "HW4"? It's the latest iteration of autopilot hardware, sometimes referred to as AI4.

If you've reached this page, it's probably because you're checking out one of our accessories that mentions it's not compatible with HW4. There's a few ways to confirm you have HW4. In summary: 

  • All original Model 3 (2018-2024): HW3
  • Model 3 Highland (2024-): HW4
  • Original Model Y (2020-2024): HW3
  • Original Model Y 2024 & New Model Y (Juniper): HW4

Check the Center Screen

After tapping on the Additional Vehicle Information link under the FSD computer option in the Controls > Software menu section, the Tesla vehicle display will show whether it has a HW4, HW3, or the older HW2.5 kit.

Tesla now calls Hardware 4.0 an AI4 computer, and that is how it is displayed in the new FSD hardware version visualization option.

Check the Cameras

You can double-check by looking at the cameras on your car. In the image below, you'll see HW3 on the left, and HW4 on the right:

The HW4 cameras (orange arrow) all have a reddish reflection (a coating to assist with color rendition in poor lighting conditions), and are larger overall. The indicator strip (green arrow) is also shorter on the HW4 side repeater.


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