Your car's air control valve (electronic valve that directs air within the system) is either stuck, burned out, or the fuse could be blown. Check your owner's manual for related fuses. If this doesn't fix the issue, you'll need to check power/operation of the control value. Best of luck.
〉 Answered on Feb 12th, 2013 by Karen Salvaggio, Owner/ Editor Thunder Valley Racing and Professional Race Car Driver at Thunder Valley Racing