I haven't seen this topic, yet. The passenger side blows hot air all the time, except, of course, when it's at the dealer. For the last couple months, the passenger side will start blowing hot air regardless of the temp setting, regardless of the direction (foot, face, defrost). Turning it off and back on doesn't help, moving the direction doesn't help, the temperature knob has no effect. It's as if the computer just turns the passenger temp to high hot on it's own. Anyone have any ideas?