I think you're probably on the right track, and the switch itself is fairly inexpensive and easy to replace. YouTube search will walk you through it and it takes less than an hour.
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2022 PCA Zone 7 Autocross Chair
2001 Boxster 986 (base) #414
-PCA GGR: Class Champion AX12 '18, '19, '20; CC06 '21; CC05 '22; PAX 5th '19, 3rd '20, '21, & '22
-PCA Zone 7: Class Champion P14 '18, '19; P02 '20; P-03 '22; PAX Champion '20 & '21
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