Ford 2013 Flex Owner's Manual page 247

246
Reasons for messages being displayed
The radar surface is
dirty or obstructed
The radar surface is
not dirty or obstructed
Heavy rainfall/snowfall
interferes with the
radar signals
System Limitations
The BLIS® and CTA 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 CTA system:
• Adjacently parked vehicles or objects obstructing the sensors.
• Approaching vehicles passing at speeds greater than 15 mph
(24 km/h).
• Driving in reverse faster than 3 mph (5 km/h).
• Backing out of an angled parking spot.
False Alerts
Note: If the vehicle has a factory equipped tow bar, and it is towing a
trailer, the sensors will detect the trailer and turn the BLIS and CTA off
to avoid false alerts. For non-factory equipped tow bars you may want to
turn the BLIS and CTA off manually.
There may be certain instances when either the BLIS® or CTA systems
illuminate the alert indicator with no vehicle in the coverage zone; this is
known as a false alert. Some amount of false alerts are normal; they are
temporary and self-correct.
2013 Flex (471)
Owners Guide gf, 4th Printing, December 2012
USA (fus)
Driving Aids
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/snowfall rate decreases or stops. Do
not use BLIS® and/or CTA in these conditions.