2015 Ford Flex Owner Manual Printing 1 - Page 241

240 Driving Aids 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. Reasons for messages being displayed The radar surface is Clean the fascia area in front of the radar or dirty or obstructed remove the obstruction. The radar surface is Drive normally in traffic for a few minutes to not dirty or obstructed allow the radar to detect passing vehicles so it can clear the blocked state. Heavy rainfall/snowfall No action required. The system automatically interferes with the resets to an unblocked state once the radar signals rainfall/snowfall rate decreases or stops. Do not use BLIS® and/or CTA in these conditions. 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. 2015 Flex (471) Owners Guide gf, 1st Printing, October 2014 USA (fus)