2002 Ford Expedition Owner Guide 1st Printing - Page 158

Driving Speed sensitive steering The steering in your vehicle is speed sensitive. At high speeds, steering assist will decrease to improve steering feel. If the amount of effort required to steer your vehicle changes while driving at a constant vehicle speed, have the power steering system checked by your dealer or a qualified service technician. AIR SUSPENSION SYSTEM (IF EQUIPPED) The air suspension system is designed to improve ride, handling and general vehicle performance for static, on and off-road driving conditions. • The load leveling feature of the air suspension automatically keeps the vehicle at a constant level if a load is added or removed from the vehicle. • The height adjustment feature automatically controls the vehicle height over a range of approximately 5 cm (2 inches) based on vehicle speed, ignition position and selection of two or four-wheel drive modes. • The air suspension automatically puts the vehicle at its lowest height when ignition is OFF to provide easy entry and exit. Whenever a door is opened (including the liftgate) the system memorizes and maintains the height of the vehicle until all doors are closed or until vehicle exceeds 16 km/h (10 mph). • The air suspension system raises the vehicle to its normal ride position when the ignition is turned on, all doors are closed and the transmission is shifted into gear. • In 4WD Low the air suspension system will not move to its lowest height. In 4WD Low, the air suspension system raises the vehicle above the normal ride height at speeds below 40 km/h (25 mph) to improve ground clearance. In 4WD Low, do not exceed 56 km/h (35 mph). • When the vehicle is in motion, the air suspension system will adjust the vehicle's height according to ground clearance and speed to maximize ride comfort. • It is normal to occasionally hear a buzz or clicking from the vehicle's air suspension system when the ignition is turned off. The system stays energized for 40 minutes after the ignition is turned off to compensate for any load changes made after the vehicle is parked. 158