Climate control issue

[Run4543]

My girlfriend has an 07 Yaris in which the controls to change the direction of airflow from the blower are no longer working. It now sends air through all vents at once and changing the knob does nothing. The blower still works on all speed settings and I'm guessing if it is the same as other cars the resistor is still good on that. Now I have a lot of experience with complete dash removals on many vehicles and even have pdf of section of the shop manual that describes the removal. Being that the car is now 4 years old I would expect some issues to start arising but before I remove the dash I think I should check to see if anyone else has had this problem so that I do not waste my time or hers.

Thanks in advance for any help you can give me.