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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 125 ( Automatic Transaxle System - Diagnostic Codes (3 Of 3) & Circuit Tests) >> Automatic Transaxle System >> DTC U1176-87: Lost Communication with Gear Shift Control Module "A" (ch2) Missing Message [10/2022 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Perform the universal trip to clear permanent DTCs.

    Refer to DTC CHECK / CLEAR [10/2022 - ]

  • Perform registration and/or initialization when parts related to the automatic transaxle are replaced.

    Refer to PRECAUTION [10/2022 - ]

  • When removing or installing the shift control ECU and shift actuator ECU, make sure there is no power supplied*1 when disconnecting or connecting the connectors.

    *1: Battery, sub-battery, integrated capacitor, etc.

  • When disconnecting a wire harness of any component connected to the supply power of the integrated capacitor (integration control supply) or when removing the integrated capacitor (integration control supply), make sure to wait 5 minutes or more after turning the ignition switch off for self-diagnosis to complete and the voltage of the integrated capacitor (integration control supply) to discharge.
  • Before performing troubleshooting, check the state of fuses and connecters of this circuit, and contact voltage of respective terminals.
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