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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Hybrid Control System - Diagnostic Codes (5 Of 5) & Circuit Tests) >> HYBRID CONTROL SYSTEM (for 1Motor-HEV Model) >> DTC U1176-87: Lost Communication with Gear Shift Control Module "A" (Powertrain Bus) Missing Message [09/2023 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:

Refer to the precautions before inspecting high voltage circuit.

Refer to PRECAUTION [09/2023 - ]

NOTE:
  • To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) auxiliary battery terminal.

    Refer to INSPECTION MODE PROCEDURE [09/2023 - ]

  • After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.

    Refer to BEFORE DISCONNECTING BATTERY [09/2023 - ]

  • When disconnecting and reconnecting the auxiliary battery

    HINT: 

    When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

    Refer to AUTOMATIC LEARNING CHART [09/2023 - ]

  • Ensure there is no power being supplied to the vehicle when disconnecting or reconnecting the connector of the shift control ECU or shift control actuator ECU, and when removing or installing the shift control ECU or shift control actuator ECU.