Bye Bye Beep for Ford
Some 2013-2014 Ford Focus ST vehicles equipped with a 2.0L GTDI engine may exhibit a beeping sound from the engine area during "key on engine off" operation or briefly after starting the engine. This concern is caused by the engine sound symposer re-initializing unnecessarily.
Reprogram the PCM to the latest calibration using IDS release 91.01 or higher. Files are available at www.motorcraft.com.