I have a 1996 Civic LX. I accidentally used my key to open the doors manually when I should have used my keyless remote (which was low on battery). I have changed the battery on the keyless remote but it won't open the doors. Whenever I open the doors (with the key, manually) the alarm goes off. I can't start car. I believe the system "locks-up"?? Is there away to reset alarm so that I can go back to using my keyless remote to open and lock the doors?