Hello Forum!
So yesterday I was able to do the maintenance in the spoiler for my srt-6 roadster. I have found out that my car alarm is not working. When I press the panic button the lights work (they go off intermittently). I am wondering what I should replace in order to get it to work again (I like having the car alarm available, especially if the wife uses the car since it becomes a safety tool).

A few things to mention: 1) My TPMS light is on. 2) It doesn't look like my HomeLink is working as I can't get the car garage door to connect to it. 3) I've found very little amounts of water in the nook where tire pump is stored (driver-side of the trunk).
Should I buy: 1) horn? 2) Security Module? 3) Alarm module? 4) Other?
Thanks for any lead! I am trying to bring my Srt6 back to a new state
Best,
Sergio