Hey,

The heater is my 01 TL seems like it's broken. The climate control is set to full auto, when the outside temp. is 65..the heater won't blow hot air when I set the temp to like 80 (note the 15 degree temp difference)...it only will start when I put the temp knob till Max Hot..and then hot air blows..and then I can turn the knob down to about 75 ish and it'll be warm...this has not ever happened before. It always would be warm when I set the temp to about 75 on a cool day. Basically, even when the temp outside is like 65 and I've set teh knob to 75..it'll blow cold...which I find weird. It's never acted up like this before.