Hi:
Have you tried a different key? I have seen the key wear out to a point it no longer will release the tumblers in the lock cylinder.
Take a look through this link. It provides ideas that may help. I realize you already have tried a lubricant, but there are additional options.
https://www.2carpros.com/articles/ignition-switch-wont-turn-stuck
Let me know if this helps.
Joe
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Friday, November 15th, 2019 AT 10:27 PM