our center high mounted stop lamp is LED according to the 2014 Fiesta owner's guide under maintenance, changing a bulb-vehicles with: 5-door
"Center High Mounted Stop Lamp
Note: The LED board is not a serviceable
item, please consult your dealer if this fails."
the 2011 Fiesta owner's guide also shows that it is LED under lights
"* High-mount brake lamp 1 LED"
"* To replace these lamps, see your authorized dealer."
"Replacing the high-mounted brake lamp
For replacement, see your authorized dealer."