[Eyer]

...Lexus has a fix, if this error occurs, but they have to replace both key transmitter and the car receiver. They have to order then take a leisurely two hours to install; no one ever said Lexus was fast and efficient.

I supposed this is covered under warranty?

Regarding the "plasticized" bag (a.k.a. anti-static bag), I use it for a spare electronic tag to stop it from beeping (and being charged) when going through a tollway if the vehicle already has one.