I have a 20v Turbo Coupe which is on a SORN. It has been stored and I removed the battery and put it on a smart charger. I start it often and it starts every time but recently the drivers door won't lock and the flashers come on and off while it's running.. Probably the alarm remote battery is a bit weak, who knows how to change it, it looks like you remove a screw and snap open the cover but haven't tried it yet.. is this a common issue with stored cars 🚗 does anyone know? 😉