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:
EXTERIOR
The Lincoln MKZ has status. Redesigned for 2010, it's well-suited for the
country club set. My kids thought it was fancy, which made them feel special and
made me feel like a chauffeur. The tall, ...
Following a vehicle
WARNING: When following a vehicle in front of you, the vehicle
will not decelerate automatically to a stop, nor will the vehicle
always decelerate quickly enough to avoid a collision without drive ...
Auxiliary power point (12V DC)
Power outlets are designed for accessory plugs only. Do not insert
any other object in the power outlet as this will damage the
outlet and blow the fuse. Do not hang any type of accessory or
acc ...
