A standard tire-pressure monitor and midyear availability of anti-rollover technology highlight 2004 updates to this luxury version of the Ford Expedition. Navigator comes in Luxury and Ultimate models, both with a 300-hp V8 and 4-speed automatic transmission. Offered are rear-wheel drive or Ford's ControlTrac 4WD that can be left engaged on dry pavement and includes low-range gearing. ABS, self-leveling air suspension, and 18-inch wheels are standard. So are head-protecting curtain side airbags for the 1st and 2nd seating rows. Second-row seating is a choice of two buckets with a center console or a 3-passenger split folding bench. The 3rd row is a 60/40 split folding bench; Ultimate features a power-folding feature for each section. It also includes a power liftgate and offers power running boards that automatically extend when a side door opens. Antiskid/traction control and heated and cooled front seats are standard on Ultimate, optional on Luxury. Power-adjustable pedals, leather upholstery, and heated power-folding door mirrors are standard on both. Optional on Luxury and standard on Ultimate is an antiskid system updated midyear to include Lincoln's Roll Stability Control. This system is designed to detect an impending tip and activate the antiskid system to reduce chances of a rollover. A navigation system is optional on Ultimate. Rear DVD entertainment is available for both models.