Hi all, just bought my first discovery yesterday, it's a 300TDI. I had it about 3 hours before some T**T decided to reverse into me, so I'm now on the hunt for a new passenger indicator and that little bit of metal that goes under your headlight (not sure on the name) and possible a blue wing if...

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?? Please help