My tech asked corporate engineer. The engineer stated they all voted the feature our this year and they forgot to update the manual.
I find this to be untrue. I told the tech, that was unacceptable and requested to talk to him/her directly at dealership.
There was another issue I reported and the same corporate engineer said this was normal..posted here http://www.clublexus.com/forums/gx-s...not-level.html
which I also believe was a poor cop out.
I encourage everyone to call Lexus about this issue. I believe it is merely a software bug, but the factory's position is they'd rather not lift a finger. Not good customer service imo.