Right and Left Turn Indicator
WARNING: This page is about a different car, the 2004 Ford RV Cutaway, 2004 Ford Econoline, 2004 Ford E450 Super Duty, and 2004 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The right and left turn indicators will illuminate when the multifunction switch is in either turn signal position or hazard lamps position and sends a battery signal to the instrument cluster.