will2466

Okay so I got the ZZP 1.0 PCM put it in started it after I did a few other things and drive around fine for about an hour. When I stopped at gas station to get some Dip, I got in car put key in and started her and at the same time my alarm goes off. It stays on for about 2min then goes off for like 2-3 min. My horn is broke so good on that end but all my lights flash. Do I need to do a relearn or something? I know how to if car doesn't start but since it starts it make me think it's not the keys. Any comment helps!
Thank you