2003 ford expedition

Well the first thing I would want to know is if the rear heater core is getting hot.
You can check the heater hoses if they are accessable, or pull the cover off the unit next to the third row seat and check the core.

Power 3RD Row Seat Problems and Tranny Shutter - Ford Truck ...

www.ford-trucks.com > ... > Expedition & Navigator

Mar 27, 2014 - Expedition & Navigator 1997 - 2002 and 2003 - 2006 Ford Expedition andLincoln Navigator SPONSORED BY: ... First the 3RD row seats won't fold down, noclicking, no sounds, nothing. I the fuses are good and there is power at the fuse box, but no power at the motors or switches. Based on continuity ...

3rd row powerfold seat stuck down - Ford Truck Enthusiasts Forums

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Mar 14, 2010 - 3rd row powerfold seat stuck down 2007 - 2014 Expedition ... 2010, 2011, 2012, 2013 and 2014 Ford Expedition and Lincoln Navigator ... I also tried lifting the seat while my wife was pushing the button to raise it, to no effect. There is defnitelypower going to the motor but it just isn't ... Join Date: Feb 2005.

No power to third row seat on 2005 lincoln navigator - Fixya

www.fixya.com/cars/t12295627-no_power_third_row_seat_2005_lincoln

Apr 4, 2012 - no power to third row seat on 2005 lincoln navigator third row seat is ... U will have to replace the entire power seat transmission, there is no ...

Lincoln Navigator Review - Edmunds.com

Check the vacuum lines to see if any are split, broken or plugged.

If the passenger heated seat still works, the grid went bad in the drivers seat for one relay operates both seat heaters

not likely unless you have had pop spill in them

likely it is the breaker thet is bad they use a breaker not a fuse and it could also bee a reley

MORE THAN LIKELY THE HEATING ELEMENT HAS MALFUNTIONED. ITS A PRETTY COMMON PROBLEM IN HEATED SEATS

The seat switch or the heated seat relay is bad.Always check your fuses first.

check the fuse if its good check the relay

check the rail system on the seat. sometimes it pulls the wire out and it doesn't get good enough connection

it seem like an electric issue. check and confirm all the fuse are intact