Surely, you have a spare key,(spouse,emergency,etc.) One that doesnt get hardly any use. Have you gotten the same results from them? I agree with Kook. My steering wheel gets bound up from time to time. Turning the wheel, as I turn the key, works every time.If none of these options help,it would almost have to be the ignition. Good luck!

J-Bird

'95.5 T, SR5, Bone stock w/32x11.50's
'06 Sonata LX