It sounds like the cylinder wasn't installed with the lock rack in the correct position. When you remove it, it has to be in the ACC position. Then you install the new one in the same ACC position. If the internal parts move then the steering lock can jam the switch or the shift interlock solenoid can as well. Both will keep it from going all the way back to off.
To repair it you would need to remove the lock cylinder and rotate the rack in the bottom back to ACC, then reinstall the cylinder with it in the ACC position.
You did reprogram the system to use the new keys correct? If not then you may want a mobile locksmith to come out and check the system (or drive it to one) They can check to see if it is the cylinder or something else as well.
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Saturday, December 8th, 2018 AT 10:34 PM