the 1997 Expedition has a PATS key ?
Does it look like this :
The F-150 introduced the PATS key with the digital odometer in 1999. The Expy had changes that were sooner on some items, this is why I ask.
The EXPY should be the same ( I cannot say 100% it is ) that the PATS info is stored in the HEC in the cluster. It is easy enough to pull the key cylinder, to get it in the new steering wheel column
Post #10, JMC describes how to remove the key cylinder in this thread ( on a F-150 )
Stopping beep beep