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WARNING: The collision warning system’s brake support can
only help reduce the speed at which a collision occurs if the
driver applies the vehicle’s brakes. The brake pedal must be pressed
just like for any typical braking situation.
Blocked sensor
If a message regarding a blocked
sensor is displayed, the radar signals
from the sensor, located behind a
fascia cover near the driver side of
the lower grille, have been
obstructed. When the radar signals
are obstructed, a vehicle ahead
cannot be detected and the collision
warning system will not function.
The following table lists possible
causes and actions for this message being displayed.
Cause Action
The surface of the radar
in the grille is dirty or
obstructed in some way
Clean the grille surface in front of the
radar or remove the object causing the
obstruction
The surface of the radar
in the grille is clean but
the message remains in
the display
Wait a short time. It may take several
minutes for the radar to detect that it is no
longer obstructed
Heavy rain, spray, snow, or
fog is interfering with the
radar signals
The collision warning system is temporarily
disabled. Collision warning should
automatically reactivate a short time after
the weather conditions improve.
Swirling water, or snow or
ice on the surface of the
road may interfere with
the radar signals
The collision warning system is temporarily
disabled. Collision warning should
automatically reactivate a short time after
the weather conditions improve.
Activating/deactivating collision warning system
To turn the warning system and/or chime on or off and set the warning
sensitivity <– –>, refer to Message center in the Instrument Cluster
chapter.
Driving
238
2011 MKX (mkx)
Owners Guide, 1st Printing
USA (fus)