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Honda: Fit 2024 - 2025 (Taiwan)#3113

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mvl-boston wants to merge 32 commits intocommaai:masterfrom
mvl-boston:fit-taiwan
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Honda: Fit 2024 - 2025 (Taiwan)#3113
mvl-boston wants to merge 32 commits intocommaai:masterfrom
mvl-boston:fit-taiwan

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@mvl-boston
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@mvl-boston mvl-boston commented Feb 6, 2026

Support for Honda Fit 2024-25 (Taiwan)

There is also haptic feedback (maybe from brake) at under 5km/h with alphalongitudinal on, which is a speed not supported by factory ACC. This appears to be the same as the upstreamed Ridgeline and Brazil City. Since this does not impact release (alphalong=off) then deferring research to a future PR.

@github-actions github-actions Bot added car related to opendbc/car/ honda labels Feb 6, 2026
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github-actions Bot commented Feb 6, 2026

Car behavior report

Replays driving segments through this PR and compares the behavior to master.
Please review any changes carefully to ensure they are expected.

Testing 154 segments for: HONDA_ACCORD, HONDA_CIVIC_BOSCH, HONDA_CIVIC_2022, HONDA_CRV_5G, HONDA_CRV_HYBRID, HONDA_HRV_3G, HONDA_INSIGHT, HONDA_E, HONDA_PILOT_4G, HONDA_CRV, HONDA_FIT, HONDA_FREED, HONDA_HRV, HONDA_ODYSSEY, HONDA_PILOT, HONDA_RIDGELINE, HONDA_CIVIC

✅ 0 changed, 154 passed, 0 errors

@mvl-boston mvl-boston marked this pull request as ready for review February 8, 2026 13:17
@mvl-boston mvl-boston changed the title Draft - Honda: Fit 2025 (Taiwan) Honda: Fit 2025 (Taiwan) Feb 9, 2026
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@mvl-boston no rlogs uploaded for the CI test route, otherwise LGTM and will merge when there's a test route.

@jyoung8607 jyoung8607 marked this pull request as draft March 28, 2026 07:18
@cmtsij
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cmtsij commented Apr 17, 2026

@mvl-boston
I got my C4 and get more fingerprints from my car.(Taiwan Fit4 e:hev 2024)
Would you like to sync fingerprint from this commit and refresh to this pull ?

And another question:

ret.lateralParams.torqueBP, ret.lateralParams.torqueV = [[0, 3840], [0, 3840]]

Should FIT_4G use 3840 or 4096 ? which one would be better ?
I’m very willing to do real-world testing and provide logs/routes.
Thanks.

@mvl-boston
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@mvl-boston I got my C4 and get more fingerprints from my car.(Taiwan Fit4 e:hev 2024) Would you like to sync fingerprint from this commit and refresh to this pull ?

And another question:

ret.lateralParams.torqueBP, ret.lateralParams.torqueV = [[0, 3840], [0, 3840]]

Should FIT_4G use 3840 or 4096 ? which one would be better ? I’m very willing to do real-world testing and provide logs/routes. Thanks.

Can you make a route public in connect.comma.ai and post the url?

Something looks wrong with your commits, usually there is only one radar FW per car. I can look with the log and update the PR.

Regarding turn max, 3840 is all factory was able to demonstrate and openpilot typically limits to that. My forks go higher and if you DM me in discord (mvl) we can work on 4096 or more for my forks.

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cmtsij commented Apr 20, 2026

Can you make a route public in connect.comma.ai and post the url?

https://connect.comma.ai/f0a3de7786dcc72c/0000001a--4336abf007

Something looks wrong with your commits, usually there is only one radar FW per car. I can look with the log and update the PR.

The additional "36161-TZA-J050" is from the Japanese model (6AA-GR3: Fit4 2020). Some people in Taiwan buy this camera from the Japanese second-hand market because it supports ACC from 0 km/h and LKAS from 30 km/h without OP (compared to Taiwan’s version, which supports ACC from 30 km/h and LKAS from 72 km/h).

I haven’t verified 36161-TZA-J050 myself, so you can ignore the Japanese firmware for now. Would you like me to strip that commit?

@mvl-boston
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Can you make a route public in connect.comma.ai and post the url?

https://connect.comma.ai/f0a3de7786dcc72c/0000001a--4336abf007

Something looks wrong with your commits, usually there is only one radar FW per car. I can look with the log and update the PR.

The additional "36161-TZA-J050" is from the Japanese model (6AA-GR3: Fit4 2020). Some people in Taiwan buy this camera from the Japanese second-hand market because it supports ACC from 0 km/h and LKAS from 30 km/h without OP (compared to Taiwan’s version, which supports ACC from 30 km/h and LKAS from 72 km/h).

I haven’t verified 36161-TZA-J050 myself, so you can ignore the Japanese firmware for now. Would you like me to strip that commit?

I added in just the firmware from your log, and added it to the testroute. Can you also do moreinfo -> preserve on comma connect in case it takes comma a while to review?

@mvl-boston mvl-boston marked this pull request as ready for review April 23, 2026 14:55
@mvl-boston mvl-boston changed the title Honda: Fit 2025 (Taiwan) Honda: Fit 2024 - 2025 (Taiwan) Apr 25, 2026
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cmtsij commented Apr 28, 2026

@sshane Would you like to review this pull request and merge it? Thanks.

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cmtsij commented May 7, 2026

@mvl-boston
Another Taiwan Fit4 e:hev 2021 car owner has different fingerprint (36161-TZK-P140) for his car.
Please help to check the route: https://connect.comma.ai/059357c42c774921/00000002--264d61bd39

and my patch for the adding fingerprint: cmtsij/openpilot@428d276

Thanks

@mvl-boston
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@mvl-boston Another Taiwan Fit4 e:hev 2021 car owner has different fingerprint (36161-TZK-P140) for his car. Please help to check the route: https://connect.comma.ai/059357c42c774921/00000002--264d61bd39

and my patch for the adding fingerprint: cmtsij/openpilot@428d276

Thanks

Added, thanks.

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