By reading pressure in fixed-axle air suspension, myLIFT™ System automatically deploys and lifts up to 2 axles, with no input from driver and no connection to switches in cab of truck. Once trailer is unloaded, axles return to lifted position. System features sealed stainless steel enclosure to prevent corrosion in harsh operating environments. External override switch provides manual lift axle control, while fail-safe ensures axles lower when power is removed.