Ford 2014 FUSION HYBRID Owner's Manual page 203

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The system uses radar sensors which are
located behind the bumper fascia on each
side of your vehicle. Do not allow these
areas to become obstructed by mud, snow
or bumper stickers, as this can cause
degraded system performance.
If the system detects a degraded
performance condition, a message warning
of a blocked sensor or a message warning
of low visibility will appear in the
information display and the alert indicator
illuminates in the appropriate mirror(s).
The information display warning can be
cleared but the alert indicator remains
illuminated.
When the blockage is removed, the system
can be reset in two ways:
• when at least two objects are detected
while driving, or
• turn the ignition from on to off, then
back on.
If the blockage is still present after the key
cycle, the system senses again that it is
blocked after driving in traffic.
Driving Aids
Reasons for messages being displayed
The radar
surface is
dirty or
obstructed
The radar
surface is
not dirty or
obstructed
Heavy rain-
fall/snow-
fall inter-
feres with
the radar
signals
System Limitations
The BLIS and cross traffic alert systems
do have their limitations; situations such
as severe weather conditions or debris
build-up on the sensor area may limit
vehicle detection.
The following are other situations that may
limit the BLIS:
• Certain maneuvering of vehicles
entering and exiting the blind zone.
• Vehicles passing through the blind zone
at very fast rates.
• When several vehicles forming a
convoy pass through the blind zone.
The following are other situations that may
limit the cross traffic alert system:
• Adjacently parked vehicles or objects
obstructing the sensors.
• Approaching vehicles passing at
speeds greater than 15 mph (24 km/h).
200
Clean the fascia area in
front of the radar or remove
the obstruction.
Drive normally in traffic for
a few minutes to allow the
radar to detect passing
vehicles so it can clear the
blocked state.
No action required. The
system automatically
resets to an unblocked
state once the rainfall or
snowfall rate decreases or
stops. Do not use BLIS or
cross traffic alert in these
conditions.