Hi, I have a T5 Transporter. I have found that it automatically alarms itself after a while when not in use. If you are still in the vehicle, moving around will set off the Alarm. The manual says on page 25 (Booklet 3.1.1) there is a button to press to deactivate the internal motion sensor. However I do not have this button. I would would like to go camping and would like to be able to sleep in the back of the van. Should I just Disconnect the Battery terminals ? Any help would be appreciated !