Who this is for
Owners with a device that will not boot, connect or drive, and prime subscribers with account issues.
comma fourcomma 3X
comma.aiFix a problemEasy
comma four or 3X not working? Official support steps
Reseat every cable, remove non-comma hardware, run the latest openpilot release, and reflash at flash.comma.ai before asking.
You need
- Your comma device and its original cables
- A computer with Chrome for flash.comma.ai
- Your order number if you open a ticket
In plain words
Why this guide matters
Before comma support will look at a comma four or 3X, they expect a short checklist done first. This page lists it: reseat cables, remove non-comma parts, run the latest openpilot release and reflash if needed. Following it means a ticket gets read instead of closed, and often fixes the problem on its own.
The short version
What the full guide walks you through
Reseat all connections and check the setup guide.
Remove any third-party mount, harness or cable.
Update to the latest openpilot release or reflash the device.
Check nothing blocks the device's view of the sky for GPS.
Open a ticket with a photo of the device if it still fails.
Before you start
- Support only helps on stock openpilot; forks must be removed first.
- Tickets that skip these steps are closed.
The full written guide belongs to comma.ai. Checked on September 10, 2026.
Quick answers
Questions people ask
Does comma support help with sunnypilot or FrogPilot?
No; support only troubleshoots stock openpilot on comma hardware. Reflash at flash.comma.ai and install the official release before opening a ticket.
What does reflashing do?
It returns the device to factory state and wipes everything on it. You then reinstall openpilot from the setup screen.
Can I extend the return window for a car port?
Yes, comma can extend it to 90 days if you open a ticket with your order number. Extensions need approval.
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Photos: comma.ai. Guide content belongs to comma.ai. CommaGuide is an independent guide and is not affiliated with comma.ai or comma.ai.
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