So for example like you say if I do not open any of the doors for 15 seconds it will lock itself maybe this is normal but then if I open any of the doors within that time it still tries to lock but as a door is open it unlock again instantly then a few seconds later it will do the same again so if I am getting tools out of the back I'm listening to the doors locking unlocking locking unlocking constantly until I shut the door that is open at witch point it locks instantly and stays locked except the drivers door then when I press the fob the drivers door also locks and I get the indicators lighting up to tell me alarm is on I presume the interior button does not work at all all fuses are ok this van was a bt van I'm starting to wonder if this is done intentionally by them the van automaticly locks the back is secure and even if someone breaks in to the cab they can not use the interior button to open rear doors and the steel bulk head makes it impossible to enter rear through the cab I supose its a good thing really I can never make the mistake of leaving my tools in a open van but it's annoying to be honest