RAM ProMaster 2014 Owner's Manual page 296

294 WHAT TO DO IN EMERGENCIES
To release the jack kit for it's storage location, you must
push down and turn the lock knob 1/4 turn counter
clockwise to the unlock position.
CAUTION!
Do not force lock knob over limit. Damage to lock
knob may occur.
Lock Knob
1 — Unlock Position
2 — Lock Position