The first thing I would check for is the hardshell connector on the multifunction switch. Remove the steering column shroud and unscrew the multifunction switch. Gently pull on each wire where it goes into the connector ON the multifunction switch. If any of the wires feel loose or actually come out of the connector, you just need to replace the connector. It is a common problem.
The connector can be had at any Ford dealership, just tell them you need a hardshell connector for the multifunction switch. Then unpin each wire one at a time and plug them into the new connector in the same location.