Start pulling fuses until it quits. There also may be other things on that fuse though. There is a module under the dash that controls it. Follow the beeping.
Check the door switch (has a plunger) for the front passenger door. The switch has either broken off or the nut holding the switch has come off so that it has recessed into the body. Either condition will tell the display that the door is still open. The switch extends out when the door is open and is pushed back in when the door is closed.
In the right front passenger footwell , it's the interior trim panel in front of the front door , by the passengers feet
It's the interior trim panel , in the front passenger footwell , just in front of the door , next to the passenger's right foot
On a 2003 Ford Expedition : The fuse panel and power distribution box are combined : It is located in the front passenger footwell behind the kick panel ( the interior trim panel , just in front of the front passenger door , at the front passenger's feet ) * the kick panel swings out for removal and allows access to the cover on the fuse panel
According to the ( 2004 ) Ford Expedition Owner Guide : The passenger compartment fuse panel / power distribution box is in the front passenger footwell It is behind the kick panel just in front of the front passenger door * the kick panel swings out for removal , there is a cover on the fuse panel behind the kick panel
The fuel pump inertia switch is in the right front passenger footwell , behind the kick panel ( the kick panel is the interior trim panel in front of the passenger front door )
In the right front passenger footwell , it's the interior trim panel just in front of the front door by the passengers feet
On a 2004 Ford Expedition : The power distribution box is combined with the passenger compartment fuse panel . It is located in the front passenger footwell , behind the kick panel ( the interior trim panel , just in front of the passenger front door , at the passenger's feet ) * the kick panel swings out for removal to gain access to the fuse panel cover ( so to answer your question , there isn't one )
The side panel where the passenger's right foot would rest
In the front passenger footwell , it's the interior trim panel just in front of the door , by the passengers right foot
In the right front passenger footwell , by the kick panel ( the interior trim panel in front of the front door )
In a 2006 Ford Expedition : The passenger compartment fuse panel / Power Distribution Box is located in the front passenger foot well , behind the kick panel ( the kick panel swings out ) * the kick panel is the interior trim panel , in front of the front door , beside the passengers feet
On a 2005 Ford Expedition : The passenger compartment fuse panel and power distribution box are combined They are in the front passenger footwell , behind the swing out kick panel * the kick panel is the interior trim panel , in front of the front door , beside the passengers right foot