Why will my car not start?

Cars 9 years old. Wire harness in the steering column, could be broke. Back to the original problem before you got radical and replaced the ignition switch, your transmission may not have been in the park/nuteral position internally, there's a switch on the transmission to signal the computer that it is still ingaged even though it isn't. Put the car in gear not running, try rocking it back and forth, you might hear a slight click if this were the case. I have had it happen with my GM car every great once in a while. Also 1st off check your oil level, some cars have a oil level safety switch, the oil gets low it will not start, I had a car shut off on me while driving down the road, 3 quarts low, started right up, didn't know the car had such a thing.

I fixed it. I switched the transponders from the original key with the new key I got from the new ignition switch that I ordered on ebay, then I swapped the receiver from both switches. plugged it up to the car and she started right up. The radiator fan and wipers was just a plug that had come undone on the back of the fuse block under the hood. Thank you for your tips, especially the oil level thing, I had no idea that was a thing.