newyorker

Lexus dealer took the car and had it for one week to find out what was wrong with it.

They replaced whole evaporator system. Cleaned out whole air system.

Cleaned interior for service( steam cleaning) RX350 for loaner.

So far, I had it for 3 days and no smell. They think it's the faulty evaporator parts.

But I find out that my 03 gs3 did not had this issue, it is really up to the house or where you park.

Because I moved to new house and new garage seems have more humid than before.

What I heard from dealer( told by tech from Japan) .. turn the ac off 3 min before the house and full fan speed with vent up and down open, temp high . this will blow all the humid in heater core to outside.
(windows open). I hope this won't happend again...

by the way I am in korea, and to solve this problem, lexus tech came from japan.

I will let you know in about a month or so..