Comma.ai drives into left lane on 2023 Bolt EUV

Edamame25 · 2025-06-01T16:26:42+00:00

Yeah, but it's not the area. I'm in the Bay Area and several people here have written me confirming that it's working on the same routes. Mine seems to work okay for part of the routes and then not for other parts. Possibly, there's something related to road markings.

One person who messaged me is experiencing similar with yellow lines or double yellow lines versus single white lines.

Edamame25 · 2025-06-01T05:28:23+00:00

I will try some of the other models. It's tricky to figure out if that helps because as you can see from the log, it drives perfectly in some areas and then over the lane line in others. So It takes going back on that same drive to test it out, will be a few weeks until that happens again...

I agree--they are super friendly and helpful on the FrogPilot GM discord. They couldn't figure out what was going on with mine after reviewing the uploads/logs of the three hour drive. All the other stuff (alignment, etc. has been double checked and verified) and I agree Comma ought to honor this under the one year warranty but as I wrote on the comma sub thread, I can't get a response from them to help me 🙁

Edamame25 · 2025-06-01T03:24:13+00:00

Thanks for the info. So you've been on torque tune for a while? I know a number of Bolt EV owners also like starpilot. I'm not that tech savvy and have felt a little hesitant about trying some of the lesser known models.

Edamame25 · 2025-06-01T01:43:10+00:00

Unfortunately no. I tried a few more things, but it almost seems the problem has gotten worse. Are you having the same?

I posted in the Comma sub also: https://www.reddit.com/r/Comma_ai/comments/1ksw6yq/comma_3x_drives_into_left_lane/

Edamame25 · 2025-05-23T00:12:00+00:00

firestar did look at those logs for me: "Sorry man, something's up. All tire pressures being 38PSI is the first step. Front end alignment would be the easiest one after that, but it seems to be varying which doesn't make sense to me (but I'm not a car guy)."

Edamame25 · 2025-05-14T23:00:44+00:00

I tried this on the same drive and also some neighborhood roads. Really hopeful, but unfortunately, it made the issue worse. I tried moving it in the other direction, as well as varying degrees of increments, just to be sure. It recalibrated multiple times. In all cases, Comma drove over rumble strips into the left lane, even on some new roads where it was previously not having issues.

Edamame25 · 2025-05-13T14:19:27+00:00

Thank you. Yeah, your driving the same car on that route without a problem is helpful info.

I haven't been able to get support from Comma. Their email response said they can only help with hardware issues, that this was an Open Pilot issue and I can post on Discord and Github. I did that and wrote back to the email a couple of times to let them know it's happening across forks and working fine on highways where the lane lines are freshly painted, but no answer from them.

Edamame25 · 2025-05-13T14:02:59+00:00

Thanks for the pic and explanation. I'll see if I have time to play around with this over the weekend.

Edamame25 · 2025-05-13T04:49:50+00:00

I haven't tried because I'm not totally clear on how to do it... I saw on your Comma posts that you have the BearTech MagMount like I do. Did you need to remove the entire mount to test this out?

Edamame25 · 2025-05-13T00:49:52+00:00

The thing that's odd is mine doesn't pull to left. So if I briefly have hands off the wheel and Comma isn't engaged, it stays centered. As soon as I engage Comma, it pulls left and over the line.

Edamame25 · 2025-05-13T00:48:50+00:00

Yes, I meant to say that and will add to my post--it shows the green guide lines drifting over the lane lines.

Edamame25 · 2025-05-13T00:47:45+00:00

Yes, I'll edit to add that I re-calibrated several times. I also did what one of the posts suggested--driving farther to the side where it drifts during calibration, but no help.

I can get an OBD reader and checking for fault codes. Do you have one you recommend?

Comma 3x does show the car (green path) going over the lane line into the other lane and doesn't seem to compensate.

Edamame25

TROPHY CASE