ACC not available

Several conditions exist which can cause ACC to deactivate or prevent ACC from activating when requested. These conditions include:
• The sensor is blocked, refer to Blocked sensor in this section.
• Brake temperature is high, refer to Hilly condition usage in this
section.
• A failure has occurred in the ACC system or related system.
See also:
Replacing high-mount brake lamp bulbs
Your vehicle is equipped with an LED center high-mount stop lamp. It is
designed to last the life of the vehicle. If replacement is required, it is
recommended that you see your authorized dealer. ...
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality, per the recommendations in the Choosing the right
fuel section. ...
Safety belt pretensioner
Your vehicle is equipped with safety belt pretensioners at the driver and
front outboard passenger seating positions.
The safety belt pretensioner tightens the safety belts firmly against the
occ ...
