FAQ: How to know if your Tesla has HW4Updated 5 days ago

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

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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
• All Cybertruck: HW4

Check the Center Screen

Navigate to Controls (Car icon in bottom left corner) -> Software -> Additional Vehicle Information. The vehicle display will show whether it has a HW4, HW3, or the older HW2.5 kit.

Here's what a HW4 (aka AI4) screen will look like:

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.