In this video, you will learn how to add a brandnew Smartkey to your existing number of Fobs, with the use of the software called TechStream. This shows Smartkey programming for a Lexus RX350 2015 but same can be applied to Toyota newer than 2007. At the end of the video I mentioned sideeffects of having a Smartkey but did not elaborate on it, this can be a abused feature so we cut that portion of video off and uploaded the main body.