1. Turn the ignition key to the "On" position and leave it there.
2. Within 10 seconds, close all the doors, including the trunk.
3. Open and close the driver's door twice within 5 seconds.
4. Turn the ignition key to the "Off" position.
The factory alarm system should be disabled. You can test this by trying to set the alarm by locking the doors and waiting for 30 seconds. If the alarm does not sound, it means it has been successfully disabled.
Note: If the above procedure doesn't work, your vehicle may have a different factory alarm system. It's best to refer to your vehicle's owner's manual or consult a qualified automotive technician.
