What is causing my car alarm to go off and my car not start. Lights come on. on 2007 Hyundai Sonata

It has been happening all weekend. I have where my lights come on but car wont start. I had to disconnect my battery to stop it for the night.

by in Harrisburg, PA on September 30, 2013
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1 answer 6 comments
ANSWER by , September 30, 2013
scan anti theft codes and post so we can adv
COMMENT by , September 30, 2013
Of couse, being a female, I haven't a clue what that means.
COMMENT by , September 30, 2013
sorry have your mech scan the anti theft module to retrieve codes. then post each code so we can adv you on possible problems
COMMENT by , September 30, 2013
Okay. Going to go to autozone after having my jumped to see if it is an old battery. Car is 5 years old and I think it has been orginal. Last few nights have gone down to low thirties with lots of dew.
COMMENT by , September 30, 2013
The dead battery is most likely the problem altogether! That should take care of the alarm as well.
COMMENT by , September 30, 2013
I am hoping. That is an easy fix and not as expensive as if I had to take it to the Hyndau dealer. They would rake me over the coals. I thank you for helping me.
COMMENT by , September 30, 2013
You bet.