FORD 2013 Expedition v.3 - Manual (Page 59)

REPLACING A LOST KEY OR REMOTE CONTROL
You can purchase replacement or additional keys or remote controls from
an authorized dealer. A dealer can program the transmitters to your
vehicle or you may be able to program them yourself. See the Security
chapter for information on programming your transmitters.
58 Keys and Remote Control
2013 Expedition (exd)
Owners Guide gf, 3rd Printing, April 2013
USA (fus)