control buttons shown change when pressed but air flow stays on one settings on 2001 Saab 9-5

all other controls on heater work such as volume of air'temperture settings just wont shift from windscreen to feet or face

by in Tacoma, WA on March 26, 2013
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1 answer
ANSWER by , March 26, 2013
scan a/c controls and adv of codes,poss blend door or actuator issue