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Q: key won't turn

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if I have the ignition switch changed out will I have to have a separate key for starting vs opening the doors?

My car has 168000 miles.
My car has an automatic transmission.

You should be ale to have the ignition switch re-keyed to fit the same keys as the keys that open your door locks. You may need to take this to the dealer to have this done to be sure they can re-key your electronically chipped key the same as the others.

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