Lincoln 2013 MKZ Owner's Manual page 205

Cause
The surface of the radar in the grille is
dirty or obstructed in some way.
The surface of the radar in the grille is
clean but the message remains in the
display.
Heavy rain or snow is interfering with
the radar signals.
Swirling water, or snow or ice on the
surface of the road may interfere with
the radar signals.
You are in a desert or remote area with
no other vehicles and no roadside
objects.
Due to the nature of radar technology,
it is possible to get a blockage warning
and not be blocked. This can happen,
for example, when driving in sparse
rural or desert environments. A false
blocked condition will either self clear
or clear after a key cycle.
Switching to Normal Cruise
Control
WARNING
Normal cruise control will not
brake due to slower vehicles.
Always be aware of which mode is
selected and apply the brakes when
necessary.
Cruise Control
Clean the grille surface in front of the
radar or remove the object causing the
Wait a short time. It may take several
minutes for the radar to detect that it
Do not use the system in these condi-
tion because it may not detect, warn,
or respond to potential collisions.
Do not use the system in these condi-
tion because it may not detect, warn,
or respond to potential collisions.
Wait a short time or switch to normal
You can manually change from
adaptive cruise control to normal
cruise control through the information
display.
E71340
if normal cruise control is selected.
The gap setting will not be displayed,
the system will not automatically
respond to lead vehicles and
automatic braking will not be
activated. The system will default to
adaptive cruise control when the
engine is started.
202
Action
obstruction.
is no longer obstructed
cruise control.
The cruise control indicator
light will replace the adaptive
cruise control indicator light