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Add BUICK_LACROSSE_ASCM_19US variant with 37 mph minSteerSpeed

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US 2019 Buick LaCrosse factory LKA operates only 60-180 km/h. Split it
from BUICK_LACROSSE_ASCM into its own variant so minSteerSpeed can be
raised above the EPS LKA-activation threshold (~12.5 m/s), preventing the
"LKAS Fault: Restart the car to engage" on deceleration. Manual
fingerprint selection only; base LaCrosse platforms unchanged.
This commit is contained in:
Beartech
2026-06-29 18:16:17 -07:00
committed by firestar5683
parent 3a1ca3fb81
commit d93039698c
3 changed files with 9 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
opendbc_repo/opendbc/car/gm/interface.py
+3 -1
View File
@@ -422,8 +422,10 @@ class CarInterface(CarInterfaceBase):
ret.steerActuatorDelay = 0.2
CarInterfaceBase.configure_torque_tune(candidate, ret.lateralTuning)
elif candidate in (CAR.BUICK_LACROSSE, CAR.BUICK_LACROSSE_ASCM):
elif candidate in (CAR.BUICK_LACROSSE, CAR.BUICK_LACROSSE_ASCM, CAR.BUICK_LACROSSE_ASCM_19US):
CarInterfaceBase.configure_torque_tune(CAR.BUICK_LACROSSE, ret.lateralTuning)
if candidate == CAR.BUICK_LACROSSE_ASCM_19US:
ret.minSteerSpeed = 37 * CV.MPH_TO_MS
elif candidate == CAR.CADILLAC_ESCALADE:
ret.minEnableSpeed = -1. # engage speed is decided by pcm
opendbc_repo/opendbc/car/gm/values.py
+5
View File
@@ -283,6 +283,10 @@ class CAR(Platforms):
[GMCarDocs("Buick LaCrosse 2017-19 ASCM Harness")],
BUICK_LACROSSE.specs,
)
BUICK_LACROSSE_ASCM_19US = GMPlatformConfig(
[GMCarDocs("Buick LaCrosse 2019 US ASCM Harness")],
BUICK_LACROSSE.specs,
)
BUICK_REGAL = GMASCMPlatformConfig(
[GMCarDocs("Buick Regal Essence 2018")],
GMCarSpecs(mass=1714, wheelbase=2.83, steerRatio=14.4, centerToFrontRatio=0.4),
@@ -587,6 +591,7 @@ ASCM_INT = {
CAR.CADILLAC_ESCALADE_ASCM,
CAR.CADILLAC_ESCALADE_ESV_2019_ASCM,
CAR.BUICK_LACROSSE_ASCM,
CAR.BUICK_LACROSSE_ASCM_19US,
}
STEER_THRESHOLD = 1.0
opendbc_repo/opendbc/car/torque_data/substitute.toml
+1
View File
@@ -66,6 +66,7 @@ legend = ["LAT_ACCEL_FACTOR", "MAX_LAT_ACCEL_MEASURED", "FRICTION"]
"BUICK_LACROSSE" = "CHEVROLET_VOLT"
"BUICK_LACROSSE_ASCM" = "CHEVROLET_VOLT"
"BUICK_LACROSSE_ASCM_19US" = "CHEVROLET_VOLT"
"BUICK_REGAL" = "CHEVROLET_VOLT"
"CADILLAC_ESCALADE_ASCM" = "CADILLAC_ESCALADE"
"CADILLAC_ESCALADE_ESV" = "CHEVROLET_VOLT"