Lost your master key? Trying to program a new master key but only have your valet key? Want to reset your existing immobilizer? This video will show you how! This applies to Toyota, Lexus, and Scion Vehicles. I demonstrate on my personal Lexus GX470 which I purchased without a master key (only came with a valet key). After being told on the forums and groups that I needed to take it in to the dealership, I decided to read more and found a solution used by the 4runner guys. To make it simpler, I decided to demonstrate and record the process.

You don't need to go to the dealership or have a locksmith charge you when you could do it yourself!

Locksmith Charley - Applies to Autoregistration
http://www.locksmithcharley.com/toyotapostflash.pdf