My Heat/ AC dash-board-unit is all soft-touch, push button controlled.
My Heat / AC fan will come on full blast, at the most random time of day, and under any/all drive and weather conditions.
Then...i cannot lower the fan setting (to say 1/4 to 1/2 blast).
Then....I can't turn in off, unless I hold my finger down on the 'OFF' button, and wedge a 'credit card' in to hold it in the 'off' depressed position.
I can 'reset' things when I turn off car and remove my credit card. But then....who knows when it will come on again.
I've had to warn my passenger, because it can scare you at first!
Help!