BLIS False Alerts

Due to the nature of radar technology, there may be certain instances when the BLIS will alert with no object present in the blind zone. This is known as a false alert. Some level of false alerts are normal.
Circumstances that may cause a false alert are; guardrails, freeway concrete walls, cyclone fencing, sharp turns around a pole or building, or coming to a stop with a vehicle directly behind but very close. False alerts are temporary and self correct.
See also:
Accessory delay
With accessory delay, the window switches, audio system and moon roof
(if equipped) may be used for up to 10 minutes after the ignition is
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Washing the exterior
Wash your vehicle regularly with cool or lukewarm water and a neutral
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available from your authorized dealer.
• Never use strong house ...
The better business bureau (BBB) AUTO LINE program (U.S. only)
Your satisfaction is important to Ford Motor Company and to your dealer.
If a warranty concern has not been resolved using the three-step
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