Ford Super Duty Owner's Manual page 166

Heated and Cooled Seats Air Filter Replacement (if equipped)
The heated and cooled seat system includes air filters that must be
replaced periodically. See scheduled maintenance information.
The filter is located under each front seat. Access the filter from the 2nd
row foot-well area. Move the front seats all the way to the full front and
full up positions to ease access.
FRONT SEAT ARMREST (IF EQUIPPED)
2013 F-250/350/450/550 (f23)
Owners Guide gf, 1st Printing
USA (fus)
Seats
To remove a filter:
1. Turn the vehicle off.
2. Push up on the outside rigid edge
of the filter until the tabs are
released, then remove the filter.
To install a filter:
1. First, position the filter in its
housing making sure that the far
forward end is all the way up in the
housing.
2. Push in on the center of the
outside edge of the filter and rotate
clockwise into the housing until it
clips into position.
To release the armrest and gain
access to the cupholders and seat
back storage bin, press the button
on the right-hand side of the seat
and pull the seat back down.
165