The air conditioning on My 2001 GS430 is blowing hot air when turned above 65 degrees. The setting is on auto, but once I move the temp. up the vents start blowing warm air and the auto light turns off. At 65 degrees degrees the air works and is very cold. Has this happened to any one else at all? What can I do for this? Thank you for your help

 

Has no one else had similar problems?? I just had an amp installed, could it be something came unplugged behind the control unit? Thank you! Greg

 

I have the same problem with my LS400 after having something installed.
The A/C only blows freezing cold and anything abover "Max Cold" causes it to blow hot??

Let me know if you figureed out the problem.

 

Check the connectors on the back of the climate control. May be you did not plug it in properly.