Low speed automatic cancellation

ACC is not functional at vehicle speeds below 18 mph (30 km/h). Once the vehicle speed drops below 18 mph (30 km/h), an audible alarm will sound, the head’s up display will flash and the automatic braking will be released.
See also:
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More than 32 million Ford and Lincoln owners have discovered the
powerful protection of Ford ESP. It is the only extended service plan
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...
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The dumbest question an automotive journalist could pose in regard to the new
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