Caution / Notice / Hint
WARNING: This page is about a different car, the 2024 Lexus ES 250, 2023 Lexus ES 250, 2022 Lexus ES 250, and 2021 Lexus ES 250. However, it is still accessible from the selected car via links, so may be relevant.
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 |
|---|---|---|---|
| Battery terminal is disconnected/reconnected | Perform steering sensor zero point calibration | Lane Tracing Assist System | Refer to INITIALIZATION [08/2021 - ] |
| Pre-collision System | |||
| Parking Support Brake System*1 | |||
| Lighting System (for Gasoline Model) | |||
| Initialize power trunk lid system | Power Trunk Lid System (for Gasoline Model) | Refer to INITIALIZATION [06/2018 - ] | |
| Replacement of ECM | Vehicle Identification Number (VIN) registration | MIL comes on | Refer to REGISTRATION [08/2020 - ] |
| ECU communication ID registration (Immobiliser system) | Engine start function | Refer to REGISTRATION [09/2022 - ] | |
| Code registration (Smart access system with push-button start (for Start Function, Gasoline Model) |
|
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| Replacement of ECM (If transaxle compensation code read from ECM) |
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Refer to INITIALIZATION [08/2020 - ]
for UB80F Initialization Refer to REGISTRATION [08/2020 - ] for UB80F Registration |
| Replacement of ECM (If transaxle compensation code not read from ECM) |
|
*1: When performing learning using the Techstream.
*2: Not necessary when ECM replaced with new one.
NOTE:
- After the ignition switch is turned off, the audio and visual system records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 2 minutes before disconnecting the cable from the negative (-) auxiliary battery terminal.
- When the cable is disconnected from the negative (-) auxiliary battery terminal and the security lock setting has been enabled, multi-display operations will be disabled upon next startup unless the password is entered. Be sure to check the security lock setting before disconnecting the cable from the negative (-) auxiliary battery terminal.
- If the ECM has been struck or dropped, replace it.
- Perform Vehicle Identification Number (VIN) registration when replacing the ECM.
Refer to REGISTRATION [08/2020 - ]