Mr Gilly, you were right! The switch tab was broken. I did get the switch to work, and now I managed to reset the FSS. That also fixed the problem I was having with the power lock not working. Thanks a bunch!

Now that I want to replace that door switch, what would be the best method of access? Do I need to remove some interior panels from the pillar to replace it?

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89 300CE
91 Supercharged Miata
99 E320 Wagon