Ford EXPEDITION 2017 Owner's Manual page 193

System Lights and Messages
E142442
The Blind Spot Information and Cross
Traffic Alert systems illuminate an amber
alert indicator in the outside mirror on the
side of your vehicle the approaching
vehicle is coming from.
The alert indicator dims when the system
detects nighttime darkness.
Cross Traffic Alert sounds also sounds an
audible alarm and a message appears in
the information display indicating a vehicle
is coming from the right or left. Cross
Traffic Alert works with the reverse sensing
system which sounds its own audible
alarm. See Rear Parking Aid (page 181).
System Sensor Blockage
WARNING
Never use the Blind Spot
Information System as a
replacement for using the interior
and exterior mirrors or looking over your
shoulder before changing lanes. The Blind
Spot Information System is not a
replacement for careful driving.
Expedition (TB7) Canada/United States of America, enUSA, Edition date: 201604, Third Printing
Driving Aids
Note: It is possible to get a blockage
warning with no blockage present; this is
rare and known as a false blockage warning.
A false blocked condition either
self-corrects or clears after a key cycle.
E205199
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 blocked sensor
warning or low visibility warning 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: 1) when at least
two objects are detected while driving, or
2) turn the ignition key 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.
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