THE security rating of lower-grade Commodores gained a boost with the VXII upgrade when an alarm became standard across the range. This system is operated via the remote central locking keypad and sounds the vehicle's horn when triggered. The so-called "power key" also operates the interior lighting (with delayed fade), engages door deadlocks when pressed twice, will unlock the driver's door only (all doors unlock when the unlock button is kept pressed) and has a rolling security code. The audio system has PIN security electronics, the steering wheel has a slip-type steering lock (if the steering wheel is forced, the front wheels will not turn), and the lock cylinder in the driver's door will freewheel if anything other than the correct key is inserted.