Ford F-150 Owner's Manual page 241

For manual transmissions, the Blind Spot
Information System is on for all gears
except the reverse (R).
Note: For automatic transmissions, the
Blind Spot Information System does not
function in reverse (R) or park (P).
System Lights and Messages
E142442
The Blind Spot Information System
illuminates an amber alert indicator in the
outside mirror on the side of your vehicle
the approaching vehicle is coming from.
When the Blind Spot Information System
is alerting on a vehicle and the
corresponding turn signal is ON, the Blind
Spot Information System alert indicator
flashes as an increased warning level.
The alert indicator dims when the system
detects nighttime darkness.
Note: The alert indicator flashes in case of
an alert and the turn signal is set to that side
at the same time.
System Sensor Blockage
WARNING
To help avoid injuries, 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.
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 201607, Second Printing
Driving Aids
E190708
The system uses radar sensors that are
located inside the tail lamp on each side
of your vehicle. Any dirt, mud and snow in
front of the sensors and/or driving in heavy
rain can cause system degradation. Also,
other types of obstructions in front of the
sensor can cause system degradation. This
is referred to as a 'blocked' condition.
Note: Do not apply bumper stickers and/or
repair compound to these areas, this can
cause degraded system performance.
If the system detects a degraded
performance condition, a message warning
of a blocked sensor will appear in the
information display. Also the BLIS alert
indicators will remain ON and BLIS will no
longer provide any vehicle warnings. You
can clear the information display warning
but the alert indicators will remain
illuminated.
A "blocked" condition can be cleared in
two ways:
• After the blockage in front of the
sensors is removed or the
rainfall/snowfall rate decreases or
stops, drive for a few minutes in traffic
to allow the sensors to detect passing
vehicles.
• By cycling the ignition from ON to OFF
and then back ON.
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