Car will not crank or start

This sounds like an issue with that is called the transmission range sensor. This is responsible for telling the computer that the vehicle is in park or neutral and is okay to start the engine.

When the vehicle doesn't start in park but does in neutral then this is normally what it is. Unfortunately, the only way to test it is to monitor the sensor with a scan tool and see that it is telling the PCM the correct position. So if you don't have a scan tool we are going to have to get someone that does.

I doubt that this is a security issue if it was able to start in neutral. You could have another issue now that is causing the current issue but without getting codes and checking the system operation with a scan tool, there is no real way to know what the issue is.

Here is a guide that gives some common tricks on unlocking the security system. Let me know if you have any luck with any of this.

https://www.2carpros.com/articles/how-to-reset-a-security-system