Red flashing car, car will not start

We need to start with checking for codes because that will limit down the causes quickly. This could be a sensor, key, or a module issue. Clearly we don't want to guess so let's check codes and go from there.

Let me know what you find. If you can't pull codes, then any parts store can do it but clearly getting the vehicle there is an issue.

Here is a guide that has some quick tricks but if these don't work then we need to get codes. Thanks

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