Now every time the car alarm goes off and it has a kill switch but I have to play with it to stop the noise and so I can start my car.
Go to the dealer and they will order you one. When it comes you take the car and they will program it to the remote. My boy just had that done with a Dodge and it cost about $70.
you could locate the brand name of the alarm on the side of the unit and contact any security fitting specialist and get them to supply you another remote they can get the information for the code inside the control box under the dash. hope this helps.
Stop by a car audio shop and see if they can identify the alarm. You can usually order replacement remotes and have them programmed for your alarm. In the meantime it can be disconnected so it doesn't go off any more.