alarm or central

Hi all! Can someone please direct me in the right location. I own a Cupra Formentor PHEV VZ2. My car alarm has started to go off during the night at very similar times, betweem 3am-4am. This has now happened twice in 3 nights and only goes off once a night. I thought it might be the battery...

mk3 cupra -2001 alarm/central locking/window control box? Where is it? got a weird window/locks thing going on mine.. windows dont work at all, but on occasion passenger one winds fully down, but not up again. locks can lock themselves also and click lock/unlock speradically. according...