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Home >> Lexus >> 2020 >> ES 300h Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 77 (Dynamic Radar Cruise Control System (Except Hybrid) - Diagnostic Codes & Circuit Tests) >> DYNAMIC RADAR CRUISE CONTROL SYSTEM (for Gasoline Model) >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U1106-87: Lost Communication with Electric Parking Brake Module Missing Message [06/2018 - ] >> Procedure

DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U1106-87: Lost Communication with Electric Parking Brake Module Missing Message [06/2018 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 250, 2023 Lexus ES 350, 2023 Lexus ES 250, and 2022 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR DTCs 
    1. Clear the DTCs.

      Powertrain > Radar Cruise2 > Clear DTCs 

    2. Make sure that the DTC detection conditions are met.

      HINT: 

      If the detection conditions are not met, the system cannot detect the malfunction.

    3. Check for DTCs.

      Powertrain > Radar Cruise2 > Trouble Codes 

      Result

      Result Proceed to
      DTC U0100-87, U0125-87, U0126-87, U0129-87, U0155-87 and U1106-87 are not output A
      DTC U0100-87, U0125-87, U0126-87, U0129-87, U0155-87 or U1106-87 is output B

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

    Result: 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]