the whole side of the passenger side heater is not working. is there a relay or fuse for the driver and the passenger side? i also check the passenger seat warmer fuse and that ok, but it wont heat up. front and back passenger side heater blows cold air only. please any ideas?

Sounds like your servo is bad, Mine does the same thing just to lazy to fix the problem. Check out this DIY.

https://www.clublexus.com/forums/gs-...vo-motors.html

TY for taling the time to look at my post, the link you gave me really help. im new to this web site and your the first person who help me LOL. does your seat warmer on the passenger side work wont work as well?