Got a new part and watched the installation video on AppliancePartsPros.com website.
My situation was not as easy as depicted in the video. It was much harder to remove the switch.
The hole for the switch was a bit small so the retaining lock would not collapse far enough to let it out easily. Also, the factory had put some glue and foam strip on the top side of the switch which interfered with the removal. Brute force finally won out with only minor damage to the corner of the switch cut out. Also, the refrigerator door was in the way of getting good leverage on the switch frame with a screwdriver. Installing was easy and the new switch works great.
The job took about ten minutes longer than expected.