My levers act up at times, same symtoms.
The leveler pump motor in mine is just behind the front grill, in front of the radiator. The wettest possible place for electrical connections.
Find the pump motor, it should have four electrical connectors, two on each end. put the system on manual and get someone to hold the jack down button while you wiggle the connections. If you get some pump action you can then take the connections apart, clean them really well and you should be good for about a year.
When they are working and hooked up, occasionally spray some WD-40 on the connectors as it will help keep them from getting damp.
This works for me and I hope your fix is this simple as well
Safe Travels
2006 Damon Challenger 348F Ford V10
2013 Ford Taurus SEL AWD
Blue Ox Aventa & Brake Buddy