Caution / Notice / Hint
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
| Procedure | Part Name Code | ||||
|---|---|---|---|---|---|
| 1 | NEGATIVE AUXILIARY BATTERY TERMINAL | - | - | - | - |
| 2 | CONNECTOR HOLDER | 82666 | - | - | - |
| 3 | HYBRID VEHICLE CONTROL ECU | 89981 | See step 3 | - | - |
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during hybrid vehicle control ECU 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 |
|---|---|---|---|
| Replacement of hybrid vehicle control ECU | Update ECU security key | Vehicle Control History (RoB)are stored | Refer to UPDATE ECU SECURITY KEY [11/2022 - ] |
| Replacement of hybrid vehicle control ECU | Code registration | Hybrid control system cannot be started | Refer to REGISTRATION [11/2022 - ] |
NOTE:
After the ignition switch is turned off, the radio and display receiver assembly records various types of memory and settings. As a result, after turning the ignition switch off, make sure to wait at least 120 seconds before disconnecting the cable from the negative (-) auxiliary battery terminal.
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.
- Learning completes when vehicle is driven.
Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link Front Camera System Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more. Refer to INITIALIZATION [11/2022 - ] - Learning completes when vehicle is operated normally
Effect/Inoperative Function When Necessary Procedures are not Performed Necessary Procedures Link Power door lock control system - Back door opener
Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch. Refer to INITIALIZATION [11/2022 - ] Power back door system Fully close the back door by hand.
HINT:
Initialization is not necessary if the above procedures are performed while the back door is closed.Refer to INITIALIZATION [09/2021 - ] Air conditioning system After the ignition switch is turned to ON, the servo motor standard position is recognized. -