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I'll join the club, thre was a thread awhile back about it being a servo in the dash that controls the warm/cold air for the pass. side. It was around $100 to replace BUT there wasnt a follow up to if that was really the problem or not. I have a set of factory service manuals and I'm going to try and trace the problem down.
hey, i called up sewells and they told me that there are 4 servos in the gs... does anyone know how to determine which one is the one i need to replace?
I had the same problem in my 01 GS430 a month ago. It turned out to be that I barely had enough R134 in the system (due to a slow leak)
My bandaid solution was to fill it up (be sure to buy the kit with the REUSABLE HOSE W/ the GAUGE) and voila my passenger was not raosting in the heat anymore.
I'll pony up to have the leak found sealed when the car goes in for the timing belt in August .....
DaveC
Last edited by BossGS4; 06-13-07 at 03:37 AM.
Reason: I SUCK at typing
i'm glad to see that i'm not the only one with this problem. i'm going in for a diagnosis tomorrow at lexus ($120). i'll let you guys know what they say.