immobilizer reset?

Toyota does not show a system reset for that vehicle. The only option they show is to erase and reprogram in all of the keys and fobs. That process requires the proper scan tool and the security code that a dealer or locksmith should have. What is the problem you have at the moment? You might try the Toyota item in this guide but depending on the system it may or may not work on the immobilizer.

https://www.2carpros.com/articles/how-to-reset-a-security-system