SECURITY features of the C4S include an electronic immobiliser with in-key transponder, integrated into a tactile one-piece remote key fob that features lock, unlock and bonnet open functions - plus a remote window and sunroof opening function. There is an alarm system with interior surveillance, but no audible warning upon un/locking. There is an interior lock button, but no panic function, no auto locking and no two-stage unlocking (anti-hijacking) feature. There are plenty of interior lights, including twin vanity mirrors on both sunblinds, twin front reading lights integrated with a central overhead light, door lighting and interior orientation lighting for the ignition switch, door handles and centre console. The interior lights turn on automatically when the ignition key is removed, while the interior lights feature a delayed fade function on locking.