r/Comma_ai

Full disclosure, I bought this car used, and the blind spot warning sensor on the passenger side keeps lying and saying there's cars there when there's not. I think it's probably because somebody bumped into the corner at one point and never properly realigned the sensor, but maybe that doesn't have anything to do with this topic, since Comma is a camera-based system?

That said, it's a 2017; it's got LKA, but not true ACC IMO because it won't maintain a distance from the car ahead (something my 2014 BMW I3 did and I kind of miss). I think it's got the Driver Confidence II package because it's got the high beam assist and forward collision alert, and following distance indicator, but I haven't tested if it's got low speed auto braking (because who'd want to do that test?). From what I'm reading in various places, this car is probably a candidate for a Comma box with OpenPilot or StarPilot. My question for you is twofold:

1. If you've been using a Comma system for your early-gen Bolt, is it worth it to try to add it to my car? Does it work well? Should I have any concerns about the bad sensor?

2. What's a good resource to get started on deciding which hardware is best, and finding installation instructions? I'm reading (slowly) through what I'm finding on https://wiki.firestar.link/cars/bolt/, but I don't know if I should consider that authoritative, or if there's better documentation available.

Hey everyone,

I recently picked up a 2026 CX-5, and mechanically, I absolutely love it. It drives great, the interior feels premium, and the motor has plenty of juice.

However, I am losing my mind over how incredibly weak the Cruising & Traffic Support (CTS) / Lane-keep assist is. I know Mazda has their whole "driver-centric" philosophy and they don't want the car driving for you, but this is ridiculous.

My car has the full CTS/TJA setup. On a perfectly straight road or the absolute slightest of highway bends, it's fine. But the second a real, moderate curve comes up, the system just completely washes out and gives up. I can literally feel that the electric steering motor has the torque to handle the turn, but the software chooses to just let the car drift toward the ditch until I intervene.

I've already gone into the Mazda Connect safety settings and messed with the cancel sensitivity, but it didn't change the actual steering strength at highway speeds.

Has anyone found a workaround for this? Are there any hidden settings or dealer firmware flashes that actually make the lane centering hold a line?

If the factory tech is completely hard-coded to be this weak, has anyone successfully hooked up a Comma.ai / OpenPilot system to the 2026 redesign yet, or are we locked out because of the new platform architecture?

Appreciate any advice or hacks you guys might have. Thanks!

Hey,

I ran into an issue when uninstalling nightly-dev that can be found here: https://github.com/commaai/openpilot/issues/38034

Had to use the flasher tool then to get back out of that bug using https://flash.comma.ai but that seems to not be working correctly which leaves me stuck at the attached screen immediately on power-up. Did reflash 3 times, same outcome.

Am i doomed?

Due to my setup, I don’t or can’t really mount centerline as it would just go down my windshield. My current setup hides all wires and is perfect. Question is, can I mount in either yellow boxes preferably driver side high up? Is there an offset setting? Will this be an issue with the comma 4?

So I just received Comma 4 and tried to install it. I do see that Honda Fit 2018 - 2020 is supported, and I do have the same car except mine is a hybrid version from Japan. Good thing is that the harness did plug just fine.

However, when I installed OpenPilot, it said it is falling back to dash cam mode because it cannot identify the car. After some searching I thought may be the fingerpint didn't exactly match the American Honda fit so I installed sunny pilot and it allows me to manually select the car.

That got me to the point where it said "drive above 15 miles to calibrate" but that lasted for like 2 - 3 seconds and suddenly it said "CAN bus disconnected, likely faulty cable"

Then I saw this video here: https://youtu.be/nNU6ipme878?si=MNjFEO6NMQvIRlPF&t=550

Which seems to suggest that if I unplug comma device (while the harness is connected), the car shouldn't complain and there should be no LKAS and ACC errors, right?

So I did that, those errors are there even when comma is unplugged. They only go away when I remove the harness and plug the original connector back in and just remove the harness completely from the loop..

Is it okay to conclude that I just got a bad harness? Should I see LKAS and ACC errors if I unplug the Comma Device's USB C plug?

Been having some issues with the latest driving model and it drove me to go update the clipper with a pile of Codex by my side this time.

• op-replay-clipper turns comma Connect drives/routes into shareable openpilot replay clips
• Hosted on Replicate, no local setup required
• New driver-debug render for driver monitoring debugging
• New 360-ui render with openpilot HUD/path overlay
• New ui-alt stacked/debugging views with steering wheel, gas/brake input/output, and radar info in the stacked layouts
• Optional audio muxing when audio recording is available
• Driver/passenger anonymization with face swapping and passenger blur options
• Automatic forward_upon_wide alignment from logged camera calibration
• Synced with the latest openpilot raylib UI implementation
• Renderer refactored for frame-accurate replay; old visible UI/video lag and the speedhack workaround are gone. Different implementation from non-frame accurate clip.py implementation.
• Route units and model/commit metadata are handled automatically in UI overlays
• Added bookmark how-to GIFs in the quick usage instructions
• Quick usage: https://github.com/nelsonjchen/op-replay-clipper#quick-usage
• Hosted Replicate Link: https://replicate.com/nelsonjchen/op-replay-clipper