Tiffin Motorhomes Allegro Bus 2016 Owner's Manual page 74

If the door is opened and closed without allowing the step to extend fully and lock
in the "DOWN" position, the step will retract and lock in the "UP" position. When the
door is re-opened, the step will not extend. The power switch must be turned "on"
for the step to extend.
Always be sure to "look before you leap!" When opening the en-
trance door from the inside, be sure that the step has fully de-
ployed before trying to step outside to avoid falling and possible
injury.
EXTERIOR FEATURES
NOT ICE
C AU TIO N
67