I drove home and opened the back door and my alarm went off. I don't have toy remote to shut it off
My car has an automatic transmission.
Hello. You should be able to turn the alarm off by placing the key into either the trunk, the driver door, or the ignition switch. Locking then unlocking the door should cause alarm to go off, or attempting to start the car with the key should also make the alarm go off. Hope this helps! If not dont hesiitate to ask again.