def METHOD_NAME(packer, bus, apply_steer, idx, lkas_active):
  values = {
    "LKASteeringCmdActive": lkas_active,
    "LKASteeringCmd": apply_steer,
    "RollingCounter": idx,
    "LKASteeringCmdChecksum": 0x1000 - (lkas_active << 11) - (apply_steer & 0x7ff) - idx
  }
  return packer.make_can_msg("ASCMLKASteeringCmd", bus, values)