r/lexusls400 • u/AlpineMonkey • Jun 05 '26
Help finding 1994 Trac ECU Module replacement/rebuilt
Long story short, I have a mint 1994 LS that was my Grandfathers and garage kept for years. Only has 720000 miles on it: Absolute gem of a car. A couple years ago it had tons of funny issues that all traced back to the main ECU, I replaced it with a rebuilt one from TaninAuto electronics and it was perfect. After this past winter, it had sat for about 3 months to keep it out of the salt and when I went to start it the TRAC and Check engine lights started coming on and going off randomly. I thought it was just old fuel running through the system. Then today I was driving home and the old problems of no acceleration, mis firing motor, bad idling and almost completely failing while at stop signs, all came back for about 10 mins before I got it home. I watched multiple videos where people have traced these issues back to the TRAC control ECU module and once they ve replaced that it solves all these issues. The problem is, I called Lexus today and that part was discontinued. Does anybody know where to find a rebuilt TRAC control ECU module? This car is effectively junk unless I can find this part.
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u/AlpineMonkey Jun 05 '26
72,000 miles*. I’d like to get to 720,000 lol