Switch "bolts" loose will can this or bad switch. Rarely parts in the column can break.
If bolt get loose then switch will back down and rod can't push the switch.
If you can't fix right now.... I think you can unplug that with out much trouble. Maybe loosen 4 column mount bolts.
Unplug old switch and plug in a new one and let hang.
Or jumper the socket. Center goes to one or other never both. Make sure jumper can't hit anything and short out.
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
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