commaai / commaai/opendbc

Toyota: Investigate lat accel factor for Lexus LC TSS2

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Description

When reviewing #2397, I saw that `torqued` is consistently learning a much lower lat accel factor than configured for this car. This means on first install it will understeer until the learner catches up, which can take half an hour or more of driving.

We should review other Lexus LC segments, and assuming the new MY2025 isn't a fluke, configure a better lat accel factor.

![Image](https://github.com/user-attachments/assets/97ff1c18-38d4-40df-a453-e28df440fdbb)

Contributor guide

No contributing guide indexed for this repository

Research direction

Start by reviewing issue #2397 and the attached plot, then compare the Lexus LC segments and their configured versus learned lateral acceleration factors. Confirm whether the MY2025 behavior is representative and consider the investigation complete when the affected segments and an appropriate configuration change are identified.

Written by the indexing model from the issue text.

Assessment

Domain
embedded-iot
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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