Some 2013-2014 Ford Focus ST vehicles may exhibit a beeping sound from the engine area during KOEO (key off, engine off) 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. Calibration files may also be obtained at www.motorcraft.com.
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