Abstract: A vehicle having an air suspension system including air bags supporting the rear cargo area thereof, a deflation control system with automatic reinflation and control reset for manually actuated lowering of the rear cargo area to the minimum height to facilitate loading and/or unloading to the ground. A manually operable control valve delivers an air pressure signal from a source to an inversion valve to exhaust the air from the air bags. A normally open electrically operated air solenoid is interposed between the control valve and the air supply and shuts off air flow to the control valve when the ignition switch is activated to restore air pressure to the air bags. The driver/operator can control the system only when the ignition switch is deactivated. Thus the system provides for operator actuable deflation and automatic reinflation and control reset.