The aa control went out in April 2010. I had bought a Ford certified 2008 Grand Marquis that was over on the milage warrenty but still under the time warenty. The blower would only blow air throught the defrosters under the windshield. I brought it ti the dealer were I purchased it and after inspection determoned that the ac control unit #3W7Z*19980 went bad and was told it needed to be replaced @650.00 Ford would not honor the warrenty. I had it relaced. In Feb. 2011 it went out again. The part was covered under the 1 year warrenty but since I drive for a living Ford would not cover it beause of the miles. Thats another problem that should be looked into. I looked on the internet and found that there were numerous times the owners were having the same problem with this unit. My complaint is this is a part that should never go bad in a 2 yr. Time frame then go bad agin in less than a year. Whats going on here?

- Naperville, IL, USA