Lock Anti-theft Alarm System Once the vehicle is locked from the outside (including the hood and tailgate) with the smart key, mobile app, NFC feature or physical emergency key, the anti-theft alarm system will be automatically activated. If someone tries to open the door in the absence of a valid smart key (or without valid authorization), the anti-theft alarm will be activated, and the turn lights and horn will both emit an alarm. You can unlock the vehicle from outside through the smart key, mobile app, and NFC feature to turn off the anti-theft alarm. 22