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Home >> Lexus >> 2024 >> RX 500h >> Repair and Diagnosis >> External Pages >> Different car >> Section 88 (Sub Battery System (W/ Advanced Park) - Diagnostic Codes) >> SUB BATTERY SYSTEM (for Gasoline Model with Advanced Park (Remote Controlled)) >> DTC B2301-87: Lost Communication with Gear Shift Control Module "A" (Line) Missing Message [08/2023 - ] >> 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:
  • When removing/installing the transmission floor shift assembly (shift control ECU)/shift control actuator assembly (shift actuator ECU) or disconnecting/connecting connectors, make sure there is no power* supplied.

    *: Auxiliary battery, sub battery, integrated capacitor (integration control supply), etc.

  • Before removing and installing the integrated capacitor (integration control supply), make sure the cable is disconnected from the negative (-) auxiliary battery terminal after 5 minutes or more has elapsed since the ignition switched was turned off.
  • Before performing troubleshooting, check the state of fuses and connecters of this circuit, and contact voltage of respective terminals.
  • 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 [10/2022 - ]

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