ZAFIRA'S primary form of protection against theft comes in the form of a rolling-code engine immobiliser, which is activated automatically whenever the key is removed from the ignition. The door and ignition lock cylinder also freewheel if anything other than the correct key is inserted, making unauthorised entry difficult. The remote keypad is controlled by radio frequency and operates the interior lighting, central locking, door deadlocks, tailgate and fuel filler flap. The driver can close the power windows by holding the key in lock position in the door. The sound system is security coded and an audible warning will sound if the key is left in the ignition and the driver's door opened. A retractable load cover is available as a dealer-fit accessory.