Trailer Tow False Alerts; Day And Night Brightness - Ford Taurus 2010 Owner's Manual

Driving
The following table lists possible causes and actions for this message
being displayed:
The surface of the radar is dirty or
obstructed in some way
The surface of the radar is not
dirty or obstructed
Heavy rainfall or heavy snowfall is
interfering with the radar signals
Due to the nature of radar technology, it is possible to get a blockage
warning and not be blocked. This is rare and known as a false blockage
warning. A false blocked condition will either self clear or clear after a
key cycle.

Trailer tow false alerts

When towing a trailer, the sensors may detect the trailer thus causing a
false alert. It may be desirable to turn the BLIS off if the false alerts
become annoying.

Day and night brightness

The BLIS and/or CTA alert will automatically dim when the headlamp
switch is in PARK, ON, or AUTO ON and night time darkness has been
detected by the sun sensor.
276
2010 Taurus (500)
Owners Guide, 3rd Printing
USA (fus)
Clean the fascia area in front of
the radar, either side, or remove
obstruction.
Drive normally in traffic for a few
minutes to allow the radar to
detect that it is no longer blocked.
Note: The vehicle must be in D
(Drive) and a few vehicles must
pass so that the BLIS can clear a
blocked state.
No action required by the driver.
The system will automatically reset
to an unblocked state once the
rainfall/snowfall rate decreases or
stops. Do not use BLIS and/or
CTA in heavy rainfall or heavy
snowfall.