I noticed two weeks ago, after starting the 96 C4 the Climate Control starts with the air blowing on the floor and Windshield and took a minute maybe 2 minutes to switch to blowing out the AC vents. Yesterday and today it wil not switch to the AC vents at all and none of the vent air flow buttons work. I thought the doors controling the air flow direction were vacume controled but when I pulled out the climate control module it has no vacume lines attached. Any help will be greatly appreciated, its hot in the south and this problem is the pits. Thanks! I'll check back or email firstname.lastname@example.org.