How do you shut off your 2004 Hyundai xg350 alarm without the remote?

To shut off the alarm on a 2004 Hyundai XG350 without the remote, you can try inserting the key into the driver's side door and turning it to unlock. This should disable the alarm. If that doesn't work, you can also disconnect the car battery for a few minutes and then reconnect it, which will reset the alarm system.