Power running boards and a power liftgate highlight the 2003 redesign of this Ford Expedition luxury spinoff. Dimensions change little from the 1998-2002 edition, but Navigator's styling is revised and a new independent rear suspension lowers the rear floor for more 3rd-row leg room. Luxury, Premium, and top-line Ultimate models are offered, all with a 300-hp 5.4-liter V8 (vs. Expedition's 260-hp 5.4). A 4-speed automatic is the only transmission. Offered are rear-wheel drive or Ford's ControlTrac 4WD that can be left engaged on dry pavement and includes low-range gearing. Antilock 4-wheel disc brakes and 18-inch wheels are standard. A self-leveling air-spring suspension is included with 4WD. Power-adjustable pedals, leather upholstery, walnut interior trim, heated power-fold door mirrors, and a CD changer 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. All Navigators have a 60/40 split folding 3rd-row bench; standard on Ultimate and optional on Premium is a power fold feature for each section. The power running boards automatically extend when a side door opens. Antiskid/traction control and heated and cooled front seats are standard on Premium and Ultimate. Optional on those models is a navigation system and, added midyear, a Monochrome Appearance Package. A rear-seat DVD entertainment system and a tire-pressure monitor are available for all models.