* Air Springs (or Air Bags): These are the most prominent part and are located at each corner of the vehicle, integrated into the suspension system at the struts and shocks. They are the actual air bladders that provide the suspension.
* Air Compressor: This is responsible for filling the air springs. Its location varies slightly depending on trim and options but is typically found under the vehicle, often near the spare tire or in the wheel well.
* Air Suspension Control Module (Computer): This is the electronic brain of the system, controlling the compressor and monitoring various sensors to maintain the desired ride height. It's usually located inside the vehicle, likely under the dash or in the center console area. However, its exact location is harder to pinpoint without consulting a wiring diagram.
* Height Sensors: These sensors monitor the ride height of the vehicle. Their location would be near the suspension at each corner, again typically integrated into the system.
To locate the compressor specifically, you'd need to look under the vehicle and examine areas near the spare tire and along the frame rails. Locating the control module requires more investigation within the vehicle interior. A repair manual or online diagrams for your specific 1997 Ford Expedition model would be helpful in pinpointing the exact locations.
