Newb around here. My 2001 left me stranded a few days ago and it's turned out the immobilizer has bit the dust. The local dealer wasn't able to reflash it or communicate with it at all. They want to replace it at a cost of 1150 dollars. Putting that much more money into this vehicle isn't in the cards. Especially after replacing the hybrid battery a year ago. Now my question is this: Is the immobilizer married to the cars CPU? Or would a used one work to restore normal starting? I realize that the keys are locked to the CPU or immobilizer. Both? I'm not afraid to put in one of the bypass boards available on Amazon or Ebay if the wiring diagrams from Toyota were to show the in's and out's needed. Any help would be appreciated. I would like to get it going again. After looking around the web, it looks like the best solution is an ECU, key transponder, and keys programmed to that ECU. All of it off a parts car of course.