2021 Lexus UX 200 BaseFACTORY OEM SERVICE PROCEDURE

DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed; DTC U030057: Internal Control Module Software Incompatibility Invalid / Incompatible Software Component [10/2018 - 07/2022]: Description

  1. for Gasoline Model:

    The forward recognition camera receives vehicle information from the ECM via CAN communication.

    If the forward recognition camera cannot store the vehicle information, it will store this DTC.

  1. for HV Model:

    The forward recognition camera receives vehicle information from the hybrid vehicle control ECU via CAN communication.

    If the forward recognition camera cannot store the vehicle information, it will store this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area
U030051 Internal Control Module Software Incompatibility Not Programmed for Gasoline Model: 
  1. When the ignition switch is ON for 3 seconds or more, the vehicle information sent from the ECM cannot be verified by the forward recognition camera for 3 seconds or more.

for HV Model: 
  1. When the ignition switch is ON for 3 seconds or more, the vehicle information sent from the hybrid vehicle control ECU cannot be verified by the forward recognition camera for 3 seconds or more.
 for Gasoline Model: 
  • SFI system
  • Forward recognition camera
  • ECM

for HV Model: 
  • Hybrid control system
  • Forward recognition camera
  • Hybrid vehicle control ECU
U030057 Internal Control Module Software Incompatibility Invalid / Incompatible Software Component for Gasoline Model: 
  1. When the ignition switch is ON for 3 seconds or more, the vehicle information sent from the ECM does not match that stored in the forward recognition camera for 1 second or more.

for HV Model: 
  1. When the ignition switch is ON for 3 seconds or more, the vehicle information sent from the hybrid vehicle control ECU does not match that stored in the forward recognition camera for 1 second or more.
 for Gasoline Model: 
  • SFI system
  • Forward recognition camera
  • ECM

for HV Model: 
  • Hybrid control system
  • Forward recognition camera
  • Hybrid vehicle control ECU
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.