thanks man...i think I’m going to try to change the ac amplifier next since its basically the resistor for this model

I think I found another thread. Make sure you buy one specific to the Navigation model. Let me see if I can find it again. Have you actually probed the wires to the blower. Are you getting 12V to them? I'd check that first before buying the AC amplifier.

See post #6
https://www.clublexus.com/forums/is-...placement.html

question for you man, under the hood in the fuse box there a relay for a/c comp, online i see there is also a relay for motor blower——would this be the same relay or is there actually a motor blower relay somewhere else in the car besides the a/c comp relay under the hood?