I have a 98 mustang and my factory alarm goes off with the panic alarm randomly when its just locked and not armed with the alarm. I took it to a ford shop yesterday and they couldnt find anything wrong with it and gave it back to me today. Now I have heard that when it gets below 40 degrees they go off but I live in Florida now and used to live in Connecticut and up north it gets way colder than 40 and it never went off so I don't think its that. If anyone has had this problem or has any idea what it could be or what I should do about it please let me know.