The 2zr-fe engine swap guide

[brushforhire]

Originally Posted by CTScott

There is a limited amount that Toyota techs can do. If you have the master key for the original immobilized ECM you can add new keys (so you could add a Yaris key to the XD ECM, if you got the XD with its original master key). Without the master key there is nothing Toyota can do (except replace the ECM and keys).

When I worked for our Toyota dealership we would wipe cars that lost all the keys all the time. Now some of the older vehicles you had to replace the ECM, but the newer stuff like this we would just wipe and reprogram new keys. I know the tech has to be a Master Tech under Toyota and they hook up the car to the shop computer and they have to get Toyota themselves to do a master reset like that.

Here is a TSB about this: Linky