2009 Yaris Replacement Key

[CTScott]

Originally Posted by jezzachezza

Greetings,

3 months back, I thought I lost my spare grey key. Had a locksmith come do a replacement and reset the entire immobiliser so the lost key, though can enter the car, would not be able to start the engine.

I recently found the spare key and I wanted to know if there's a way I can load and replace the immobiliser code back onto the lost key so I can get it to be functional again?

It's a 2010 yaris. Hope some expert here can help.

Thanks.

Take a look at that document. I believe that the only way to register keys with the immobilizer cleared is using the Toyota service tool.