JoeIndy35

So I noticed the other day when I started my 07 Q7 with my key, that it took a few seconds longer for the ignition to click at the steering column, and then engaging the starter, then starting. Today, it is very cold, around 25 degrees out. I tried to start it, and the radio and all that came on, but no click in column, and the starter was never engaged. Then, oddly, my hazards starting flashing on their own, as if the alarm was going off. I locked the door, and unlocked it and the flashing stopped. Now, nothing happens when I put the key in, or my spare key either. My battery is fully charged, so not a dead battery. The radio will now not even come on when I put the key into the ignition. The key-less entry still works fine, I can lock and un lock just fine. I thought the immobilizer was doing something with this since my lights started flashing, but now not so sure.

Any idea what could have went bad?