Ford Expedition Owner's Manual page 167

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 for
more information.
There is a filter located under each front seat. The filter can be accessed
from the second row seat. Move the front seats all the way forward and
up to ease access.
To install a filter:
2013 Expedition (exd)
Owners Guide gf, 1st Printing
USA (fus)
Seats
To remove a filter:
1. Remove the key from the
ignition.
2. Press up on the outside rigid
edge of the filter and rotate
counterclockwise once the tabs are
released.
3. Remove the 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. Then push in on the center of the
outside edge of the filter and rotate
up into the housing until it clips
into position.
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