Hi, does anybody know how to get the doors to lock automatically after 30 seconds of leaving the car on a mk5 ibiza 1.6tdi. Reason being, I had the contents robbed from my car as i forgot to lock it.I know im a ****. Looking in the hand book under involuntary locking it say the car should relock itself if no door is opened within 30 sceonds but mine dont. Ive tried holding the lock button on the center console for 3/10 sec. Any thoughts appreciated