2005 ford expedition air suspension problem

Hey Y'all, I have a 2005 Ford expedition and it's air suspension is not working, the truck is down to it's lowest height. Does anyone know what the problem is and whatcould be the solution? An answer would really be appreciated.
Thx:smile:

Problem: suspension has no air in it. Solution: put air in suspension! Could be a leaky air line/air bag/air shock or a faulty pump/compressor. When it comes to air-ride systems, i'm more familiar with semi trucks, but passenger vehicles are basically the same. The compressor is set either to a certain pressure, or it steadily pumps air until the vehicle reaches a certain ride height.
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