Day and night brightness

The BLIS -CTA alert will automatically dim when the headlamp switch is in the parking, on, or autolamp position and night time darkness has been detected by the sun sensor.
See also:
MKZ Engines, Transmissions and Drive Systems
The 2013 Lincoln MKZ offers three distinct powertrains. The standard
2.0-liter four-cylinder EcoBoost® delivers the performance of a traditional V6
along with expected segment-leading fuel economy ...
Front passenger sensing system
The front passenger sensing system is designed to meet the regulatory
requirements of Federal Motor Vehicle Safety Standard (FMVSS) 208
and is designed to disable (will not inflate) the front pass ...
