If the legs are raised up too high, sometimes it can be jammed. If attempting to lower the leg results in a tik-tik noise, then try to physically push down on the leg itself (Apply downward pressure) while trying to lower the leg with the switch on the Dashboard. If that doesn't unjam the leg, there is a hand crank in the trailer that can be attached to the leg to manually lower it. The leg's motor will have to be removed to reach the jack area.

Also verify the integrity of the bearing that's in the track of the stabilizer leg where the worm gear is. If that bearing is crushed that could also be the problem. The solution there would be to replace that bearing rather than replacing the entire stabilizer leg.

If the issue is that the leg moves in one direction but not the other (motor doesn't even kick on), then the issue is most likely the switch on the console.