Hi everyone. So I went to my sisters house and when I left my car would not start/crank over. We have replaced the starter, crankshaft position sensor and even replaced the ignition switch. I'm running out of ideas on what it could be. We checked fuses and didn't find anything. Also the security light is flashing when we try to start it. Any suggestions will be helpful.

 

Try the unlock button a few times on the Key Fob.
Try a different key
Disconnect the battery for half an hour
Take to dealership and have them reprogram the key
If the security light is flashing, it thinks you're trying to steal it, so it may not be recognizing the key transponder

 

I agree with insylem. This same thing happened to me yesterday. I had to lock the car with the key fob and then wait until the security light went off. Then when I unlocked the car and tried to start, it fired right up.