Lincoln MKZ Owner's Manual page 218

Due to the nature of radar technology, it is
possible to get a blockage warning with no
actual block. This happens, for example,
when driving in sparse rural or desert
environments. A false blocked condition
either self clears or clears after a you restart
your vehicle.
Switching to Normal Cruise Control
WARNING
Normal cruise control does not brake
for slower vehicles. Always be aware
of which mode you have selected and apply
the brakes when necessary.
You can manually change from adaptive
cruise control to normal cruise control
through the information display.
The cruise control indicator light
replaces the adaptive cruise
E71340
control indicator light if you select
normal cruise control. The gap setting does
not display, the system does not
automatically respond to lead vehicles and
automatic braking does not activate.
MKZ (CC9) Canada/United States of America, enUSA, Second Printing
Cruise Control
215