I got a dodge stratus 2001 and everytime I use my key on the drivers door the alarm goes off, Im not sure why but I could really use the help on figuring out why this is happening! Thanks!

 

not to familar with alarm ,have you tried unhooking car battery for 5 or 10 minutes to see if that helps, does it go off when you use remote, think there a switch in lock cylinder could be bad/loose or door wiring might be bad/loose