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Home >> Lexus >> 2021 >> LS 500h AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - Service Information >> ECM >> Removal [10/2023 - ] >> Caution / Notice / Hint
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Caution / Notice / Hint

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during ECM removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Disconnect cable from negative auxiliary battery terminal Operate the multiplex network master switch assembly (retractable outer mirror switch) to extend and retract the outer rear view mirror assembly Parking support brake system Refer to INITIALIZATION [10/2022 - ]
Initialize rear door sunshade system Rear door sunshade system Refer to INITIALIZATION [10/2017 - ]
ECM Vehicle Identification Number (VIN) registration DTC P0630-51 is output Refer to REGISTRATION [10/2023 - ]
Update ECU security key Vehicle Control History (RoB) are stored Refer to UPDATE ECU SECURITY KEY [10/2020 - ]

HINT: 

When the cable is disconnected/reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.