Alarm issue
 

I am having an issue with my alarm. Yesterday I disconnected the battery to do some work and clean the terminals. When i reconnected the battery the alarm went off and would only shut down if I held the unlock button for about 5 sec. If I don't do anything the alarm times out after about 30 sec. It did it the second time when I went to open the door; even though it wasn't locked. It is controlled by a Hyundai fob so I am assuming it is factory alarm. Any ideas? Thanks