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:
Service recommendations
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Securilock passive anti-theft system
SecuriLock passive anti-theft system is an engine immobilization
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Driving Impressions
Lincoln has made some significant improvements in the Navigator’s driving
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