Confusing electrical fault
Ok, so abit of background.
Used the Nova today. Went to get the tracking done. Alarm went off a few times (guy was told about valet mode etc) and was reset. Car parked outside when finished. I paid and collected my keys.
Got in, ignition on, dash lights etc all working, anti hijack kicked in and doors locked (as they do with a Clifford) turned the key and lights went out. Car was dead. Borrowed a jump pack, nothing. Completely dead. Battery was on charge all this week so sure battery is ok.
Stumped to be honest. No life in it whatsoever.
Any ideas? I'm worried that the Clifford has been triggered and cut all power. But why was i allowed to get ignition etc. and then for it to cut out?