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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 (Advanced Drive / Driver Monitor Camera System - Diagnostic Codes) >> Driver Monitor Camera System >> DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U1184-87: Lost Communication with Advanced Drive Control Module Missing Message [11/2021 - 10/2023] >> Procedure
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DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U1184-87: Lost Communication with Advanced Drive Control Module Missing Message [11/2021 - 10/2023]: Procedure

WARNING: This page is about a different car, the 2024 Lexus LS 500h, 2023 Lexus LS 500h, and 2022 Lexus LS 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DTC 
    1. Clear the DTCs.

      Chassis > Driver Monitor Camera Control > Clear DTCs 

    2. Check for DTCs.

      Chassis > Driver Monitor Camera Control > Trouble Codes 

      Result

      Result Proceed to
      DTCs U0126-87, U0129-87, U0155-87 or U1184-87 are output. A
      DTCs are not output. B

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2023] 

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023]