I must admit mine is out of warranty, I don't have any sleepless night, don't get me wrong I can see the benefits, look at @Flytvr issue with the steering rack, if he had to shell out his own money on that it may have soured the ownership experience somewhat, this is my 4th Lexus and I have ran all of them outside the warranty without a single failure, maybe I am tempting fate, I don't know, how much is a warranty on the IS-F anyway...............????