Q: key unlocks doors and trunk but ignition is locked key will not turn ignition, i think maybe key is worn out?

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key unlocks doors and trunk but ignition is locked key will not turn ignition,

My car has 135000 miles.
My car has an automatic transmission.

There are several possibilities. The key could be worn (try a spare key), the lock cylinder could be worn or broken, in which case no matter what key you try it might not work and/or there could be an issue with the shift interlock. The ignition "switch" is an electro-mechanical device so if you simply request an electric component inspection - ignition switch the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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