One problem related to turn signal has been reported for the 2012 Ford Fiesta. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Ford Fiesta based on all problems reported for the 2012 Fiesta.
The exact time of the incident is unknown. I had not driven my car at night for at least two weeks before I tried to turn on my low beam head lights when I was parked in a friend's driveway at night. My car's low-beam headlights did not turn on. Upon further inspection it was discovered that the light bulbs were undamaged, but the relay had become corroded. When the relay was removed the corroded prong broke off (or otherwise remained) in the fuse box. Now there is no way to replace the relay, because of the prong in the fuse box. My low beams do not work. My turn signals and my high beams still function, but it is not safe to drive at night with only high beams. So, this is a safety issue. Below is a picture of the corroded relay prong in the fuse box. The prong is blue/green and is located in the upper left hand of the picture. Recently in canada, there was a recall for the same problem for similar Ford Fiestas.