I have 2004 RX330. I had a radiator leakage before christmas and had it fixed about a month ago.
now, my passenger side fan does not blow what I set it to. I set it up to 85F but it blows the temperature of what is outside at the moment. right now it is -10F and it is bringing that cold air into my car. i had it checked by mechanics. they said it's not the convertor or anything. they all said I have to change the passenger side radiator which is installed close to the passenger side air bag. I did not know if RX330 had a separate radiator for that. Please advice anyone.

 

find another mechanic fast!!! Like ASAP. The heating coil is near the area you marked, but there is no second radiator. I would bet that If the issue only is on one side you have an issue with your blend servos not working properly. If hot air is on one side but not the other, you do not have a heater problem. You have a vent issue.