See also:

Improved performance without sacrificing fuel economy
Power for the 2011 Lincoln MKX is supplied by the 3.7-liter Duratec V-6, which employs advanced technology and clever control strategies, such as Twin Independent Variable Camshaft Timing (Ti-VCT) ...

Low speed automatic cancellation
ACC is not functional at vehicle speeds below 16 mph (26 km/h). Once the vehicle speed drops below 16 mph (26 km/h), an audible alarm will sound and the automatic braking will be released. ...

Ignition modes
1. Off — This position shuts the engine and all electrical accessories off. Press and release the START/STOP button without applying the brake pedal when your vehicle is in accessory or on modes ...