Expedition 4WD V8-4.6L SOHC VIN W (1999)
Suspension Mode Switch: Description and Operation
The air suspension switch supplies power to the air suspension control module. Without the air suspension control module receiving this power, the
4-wheel air suspension system is inoperative and will not react when the vehicle is raised or lowered.
If the air suspension is disabled by turning off the air suspension switch, a "CHECK SUSP" will appear in the RH corner of the cluster with the
ignition in the RUN position.
