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There have been a few problems with the Zephyer climate controlled seats. What I would first like you to do is remove fuse's #11-12 in the Battery Junction Block in the engine compartment. This would reset the module. Try the seats after this.
Yes it is. The process I told you is part of a Technical Service Bulliten. Since that worked, You will have to have the Dual Climate Control Seat module reprogramed to keep the seats running properly. If you do not, They may stop working again. A dealer will have to reprogram for you. Hope this helps.
Here is the TSB I am talking about:
Some 2007-2008 Expedition and Navigator, 2006 Zephyr and 2007-2008 MKZ vehicles built before 8/31/2007 and equipped with climate control seats may exhibit inoperative heating and/or cooling. There are no diagnostic trouble codes (DTCs) associated with this issue and IDS/PDS will not communicate with the dual climate control seat module (DCSM).
Follow the Service Procedure steps to correct the condition.