I have a 2004 Lexus RX330. I have one master key - it starts the car and opens/locks all the doors via the 3-button remote. I also have a cut key that doesn't do anything but open the doors manually. It fits into the ignition, but doesn't start the car because it doesn't have a chip in it anymore, so it's almost worthless unless I need into the vehicle should I lock myself out of it in my driveway or something. I do not have a valet key, nor do I want one; I want another master key.
I've been reading some on the Lexus programmable key thing, and there's a ton of different opinions and experiences. I would generally reason that factory keys are probably best in the word of knock-off keys and no-name keys, but maybe not. The price of another master key with a transponder, cutting and programming is not even close to being inexpensive, so I'm looking for a killer deal or some 100% solutions. Who can shed some real world light on the subject for me?
