DTC B2790: ID BOX EEPROM Malfunction [08/2013 - ]: Procedure
WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
- REPLACE ID CODE BOX (IMMOBILISER CODE ECU)
- Replace the ID code box (immobiliser code ECU) with a new one. Refer to REMOVAL [08/2013 - ] .
NEXT: Go to next step
- CLEAR DTC
- Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ] .
NEXT: Go to next step
- REGISTER RECOGNITION CODE
- Register the recognition codes in the ECUs. Refer to REGISTRATION [08/2013 - ] .
NEXT: Go to next step
- REGISTER ECU COMMUNICATION ID
- Register the ECU communication ID. Refer to REGISTRATION [08/2013 - ] .
NEXT: Go to next step
- CHECK FOR DTC
- Check for DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ]
.
OK
DTC B2790 is not output.
NG → See step 6
OK → END (ID CODE BOX (IMMOBILISER CODE ECU) WAS DEFECTIVE)
- Check for DTCs. Refer to DTC CHECK / CLEAR [08/2013 - ]
.
- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to REMOVAL [08/2013 - ]