My LS had the computer replaced in 2006 at the dealership. My question is if Lexus had updated the ECU with the proper capacitors by this point? Should I expect this ECU to have the same issue as the originals?

The ECU serial number is 9617509-623P if that helps.

 

As long as your ECU has a label which says Denso remanufactured/refurbished or something similar, proper capacitors were used. Nichicon's P series QAS capacitors were discontinued at the end of 20th Century and successor capacitors were used by Denso for the refurbishment. If the dealer used a stocked original ECU, Nichicon P series may be inside and it's time to fail. If there isn't label, I need to see inside for the judgement.

 

Okay very good, the ECU does say "remanufactured for Toyota" near the part number.

Thank you for your answer.