Sometimes it's alot like a puzzle. On my rig the key needs to be on, e brake set. Have you tried putting the levelers down? You have to try every possible configuration.
2010 Damon Challenger 368, F-53 Chasis
2010 Jeep Wrangler Rubicon unlimited, Toad
2018 Ram 1500 4x4, Club Cab, 6.4 bed,3.92 gears, 5.7 HEMI
2019 Dodge Challenger Scat Pack Wide Body, 6.4 HEMI