I had seen a post in this forum which stated (and showed a photo or drawing) of the HID headlights' adjustment process. [i assume you have HID headlights since you mention the A?? which is the HID 'corner' settings.]. The adjustment is done at the rear right, I believe, suspension of the car where a lever sets the level of headlights dependent on how much 'down' the rear of the car is. You should do a search on this website, on the the RX posts. If I see the post again (and if I can find yours), I will send the URL along to you.
Here it is
http://us.lexusownersclub.com/forums/index...rt=#entry277286
Search 'up' and 'down' from it
Thanks for the help. The article is for the '08 model and mine is an '05. Not sure if that makes a difference or not. I'll check it out later. Thanks again,