The rear AC in my 99 lx470 is not working properly. It blows out room temp air no matter what setting you have it on. I am thinking that the air box which switches the flap from hot to cold is broken but i am not sure. Just curious if anybody else has had this problem. Thanks.

 

I've been having the same problems on my 00' LX. Except, when it is hot out, the air conditioning unit on the back blows out hot air when it is set to blow out cold air, and vice versa. i think it has something to do with the positioning of the air ducts near the roof of the car?