I have a similar issue... mine has a led that flashes whenever a button is pushed. My trunk remote only works when i have left the car locked for a spell... return and use the trunk button before unlocking the doors. Two flashes and click. But if I unlock the doors first the led still flashes twice when I hit the trunk button, but it won't open. I get the same result with both keys. :cries:
If anyone has a solution or idea, please post.
Thanks!
P.S. 1998 GS400.. First time Lexus owner and very happy I made the move. GS - Such a solid car, WOW! 8)