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Home >> Lexus >> 2025 >> RX 350h Premium >> Repair and Diagnosis (Single Page) >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System - Diagnostic Codes (5 Of 9) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (except Gasoline Model) >> DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0103-87: Lost Communication with Gear Shift Control Module "A" Missing Message; DTC U0110-87: Lost Communication with Drive Motor Control Module "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 U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0134-87: Lost Communication with Power Steering Control Module Rear Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U025E-87: Lost Communication with Electronic Brake Booster Control Module "A" Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1107-87: Lost Communication with Power Management Module Missing Message; DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1159-87: Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message [10/2022 - ] >> Procedure
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DTC U0100-87: Lost Communication With ECM/PCM "A" Missing Message; DTC U0103-87: Lost Communication with Gear Shift Control Module "A" Missing Message; DTC U0110-87: Lost Communication with Drive Motor Control Module "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 U0131-87: Lost Communication with Power Steering Control Module Missing Message; DTC U0134-87: Lost Communication with Power Steering Control Module Rear Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U025E-87: Lost Communication with Electronic Brake Booster Control Module "A" Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1107-87: Lost Communication with Power Management Module Missing Message; DTC U111A-87: Lost Communication with ECM/PCM "A" (ch2) Missing Message; DTC U1150-87: Lost Communication with Hybrid Powertrain Control Module (ch2) Missing Message; DTC U1159-87: Lost Communication with Electronic Brake Booster Control Module "A" (ch3) Missing Message [10/2022 - ]: Procedure

  1. CHECK DTC (HEALTH CHECK) 
    1. Perform the Health Check using the GTS.

      Result

      Result Proceed to
      DTCs for related systems are output together with U0100-87, U0103-87, U0110-87, U0125-87, U0126-87, U0131-87, U0134-87, U0140-87, U0151-87, U025E-87, U0293-87, U1107-87, U111A-87, U1150-87 or U1159-87. A
      DTC U0100-87, U0103-87, U0110-87, U0125-87, U0126-87, U0131-87, U0134-87, U0140-87, U0151-87, U025E-87, U0293-87, U1107-87, U111A-87, U1150-87 or U1159-87 is output. B
      DTCs are not output. C

    Result: 

    A 

    GO TO DIAGNOSTIC TROUBLE CODE CHART (RELATED SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2022 - 08/2023]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2023 - ] 

    Result: 

    B 

    INSPECT CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 08/2023]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2023 - ] 

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - ] 

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