See also:

Second generation (2003–2006)
The Navigator was updated in 2003, along with the Ford Expedition, on the new Ford U platform. The interior was also substantially revised to bring it up to the level expected by luxury buyers. So ...

Fuel filter
Your vehicle is equipped with a lifetime fuel filter that is integrated with the fuel tank. Regular maintenance or replacement is not needed. ...

Disposal of airbags and airbag equipped vehicles(including pretensioners)
Contact your authorized dealer as soon as possible. Airbags MUST BE disposed of by qualified personnel. ...