I've just bought my first discovery 300TDi and whenever I set my alarm either with the key or using the fob the alarm goes off after about 5 minutes. I can't understand why as the doors and windows are closed and there's no one near it??
Well I checked the bonnet and taped the switch down which seems to have solved it, for a couple days, now it's started again. I've tested all the boot, bonnet and door sensors and they all seem fine.