I am sure there is a logical reason but Im unable to find why. So last night I had my heater on hi. I switch it to vent out of the dash. Three minutes later it switches to the floorboard. I then switch it back to the dash and then again it goes to the floorboard on its own. Why does it do this? Why doesn't it stay venting out of the dash?
So I then change it to 77º and about 5 min later it went to full blast on hi?

 

Is that what it does using the 'auto' feature? Or without? Not that I can even figure out my heater which only seems to work if I'm doing over 65mph. Not even worth having fixed in Arizona.

 

Yes on auto. Did it again today. Had it on low for a bit then all of a sudden it went to full blast.

 

Auto does that to evenly disperse the heat/ac

 

Ok, I'll turn the auto off next time to see what it does.

Thanks!

 

Yeah auto is awesome in the summer but in the winter it can be a lil annoying if you need the defroster. Would be nice to have oscillating vents like the LS430 as well.

 

Seems I only used Auto in the summer. In winter always went to *** warmers first.

 

Check the blend door actuator ?

 

Well I hit auto and it automatically vents to the floor. Nothing I change or do with the heat it eventually vents to the floor after 3 min. Very annoying.