The only time I have ever had any difficulty with turning the key has alway been related to the lock or position of the steering wheel.
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Spraying little graphite powder in the lock has helped me out with tumblers on the way out until I could get them replaced.
Your key could also be worn, my original key which I don't use is nice and sharp, on the key I use everyday it's very rounded and sometimes doesn't always start. That rounded key doesn't work on my door anymore either.
Good point. I think I'll trade keys with my wife since she RARELY drives it. I mean she's only driven it MOonceON over the past 16 years.
Spraying little graphite powder in the lock has helped me out with tumblers on the way out until I could get them replaced.
Turn the steering wheel hard left and then hard right wile trying to unlock the ignition.... the pressure of the steering wheel may be holding hard against the key lock mechanism