key recognition

Hello I bought a landcruiser 100 from 2003 that's been under water and the ecu doesn't work anymore (engine doesn't start and ecu can't be find by techstream). Now I am looking for a new ecu with part number 89661-60A90 but was wondering how this works with the immobiliser. Do I need the...

Concerning my new-to-me LX570, I just picked it up from the tire shop and it won't recognize the key. There was no problem before this. Of course, it may be coincidence, so I changed the battery in the fob and it still doesn't recognize it. The fob will lock and unlock the doors, but the truck...