Who this is for
Owners who need to read logs, install a branch by hand or debug a device.
comma fourcomma 3X
comma.aiFix a problemSome effort
How to SSH into a comma 3X or comma four
Add an SSH key to GitHub, enable SSH on the device, enter your GitHub username, then connect as user comma on port 22.
You need
- A GitHub account with an SSH key
- SSH enabled in the device settings
- The device's IP address or its hotspot
In plain words
Why this guide matters
SSH lets you open a terminal on a comma 3X or comma four to read logs, install a branch or debug. The official comma page covers adding a GitHub SSH key, enabling SSH on the device and connecting on port 22. It also explains the serial console and ADB for when SSH is not enough.
The short version
What the full guide walks you through
Create an SSH key and add it to your GitHub account.
Enable SSH on the device and enter your GitHub username.
Connect from a terminal as user comma on port 22.
Use the serial console or ADB if SSH is not enough.
Before you start
- Keys are fetched once; re-enter your username after changing them.
- The comma four serial console needs debug hardware not yet on sale.
The full written guide belongs to comma.ai. Checked on September 10, 2026.
Quick answers
Questions people ask
Do I need a GitHub account?
Yes; the device fetches your public keys from GitHub. Add an SSH key to your account before enabling SSH.
What are the login details?
Username comma on port 22 using your GitHub key. Over the device hotspot the address is 192.168.43.1.
Can I SSH from anywhere?
With a comma prime subscription you can connect through ssh.comma.ai. Without it you need the same Wi-Fi or hotspot.
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