Are you on shore power or battery. If just battery, check voltage at the battery.
If power is not the issue, is there a lock to hold them in place? If no lock, have someone pull on a arm while you hit the button.
Let us know if you find out the issue.
"A Man's Gotta Do What a man's Gotta Do"
2000 Fleetwood Southwind Storm 30H- Workhorse
2016 Prime Time Tracer 3150BHD