OK guys I've change the ac amplifier, navigation screen and gps unit. I have check all fuses and relays still nothing. I jumped the clutch and it works but that all ive got. So i would assume electrical. Rear blows air only front does nothing. I have no climate control at all. Any other ideas out there? Its been to Lexus and two other Toyota specialist they all say they have never seen this. Im going nuts here.