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:
If your vehicle gets stuck in mud or snow
Note: Do not rock the vehicle if the engine is not at normal operating
temperature or damage to the transmission may occur.
Note: Do not rock the vehicle for more than a minute or damage to the
...
Blocked sensor
An extreme build-up of materials on
the left and/or right quarter panel
fascias such as mud or snow can
cause degraded performance of the
BLIS . Also, heavy rain can cause
the same effect. ...
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Standard MyLincoln Touch and remote start lead the list of features or
technologies that are new for the 2011 Lincoln MKX, including:
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