My young daughter poured a glass of water across the driver side dash, into the defrost vent. I thought it might just drain out the condensation drain. However, now the both the damper control, and temp control knobs do not work. The blower works in all speeds, but the air damper is stuck in the defrost position. i suspect a controller has shorted out, but there is no associated fuses blown. what has been shorted out/damaged, and where is it located?